What are the cheapest airlines to fly from Region of Ontario to Seattle one-way?

For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 213. Users have also found prices from C$ 224 and C$ 231 on Delta and United Airlines, respectively.

What are the most popular routes from Region of Ontario to Seattle?

The most popular route from Region of Ontario to Seattle is Toronto Pearson Intl - Seattle/Tacoma Intl. You may also consider Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl or London - Seattle/Tacoma Intl.

What are the cheapest flights from Region of Ontario to Seattle?

Looking at all options, your cheapest flight can be booked for C$ 233. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 347 on average our data indicates C$ 1,392 when flying from Region of Ontario to Seattle.

What are the most reliable airlines from Region of Ontario to Seattle?

No one likes to see their flight delayed. When booking a flight from Region of Ontario to Seattle consider choosing Brussels Airlines (100%), Alaska Airlines (95%) or Hawaiian Airlines (94%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Region of Ontario to Seattle?

The most popular airlines flying from Region of Ontario to Seattle are American Airlines, Air Canada and Alaska Airlines. Something to consider prior to booking your flight.

How far in advance should I book a flight from Region of Ontario to Seattle?

To save up to 64% on this flight, we recommend booking at least 43 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Region of Ontario to Seattle from C$ 566 1-2 weeks out and tickets from C$ 1,009 for flights departing within the next 72 hours.

What is the cheapest month to fly from Region of Ontario to Seattle?

Our data shows that October tends to be the cheapest month to fly to Seattle from Region of Ontario. Users have commonly found prices around C$ 648 for the month, but tickets can be as low as C$ 356. Due to multiple factors, prepare for potentially higher prices in March.

What airport do you fly into for flights to Seattle from Ontario?

Located just 18.4 km from the city centre, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Ontario.

Can I find deals for flights from Ontario to Seattle that include hotel bookings?

Yes. In addition to deals on Ontario to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Seattle.

Can I find deals for business class flights from Ontario to Seattle?

Yes. Cheapflights offers flight deals from Ontario to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 213+ Flights from Ontario to Seattle, Washington

Cheap flight deals from Ontario to Seattle

Find flight deals from Ontario to Seattle

Cheapest flights from Ontario to Seattle
Explore the most affordable flight options available from Ontario to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2024.

Mon 9/124:20 p.m.YYZ - SEA

Nonstop5h 19mAlaska Airlines

Mon 30/127:26 a.m.SEA - YYZ

Nonstop4h 41mAlaska Airlines

Deal found 18/11C$ 363

Mon 16/127:15 p.m.YYZ - SEA

Nonstop5h 25mAir Canada

Wed 25/123:05 p.m.SEA - YYZ

1 stop6h 52mAir Canada

Deal found 19/11C$ 378

Mon 16/125:04 p.m.YYZ - SEA

1 stop8h 21mDelta

Wed 25/128:30 a.m.SEA - YYZ

1 stop11h 38mDelta

Deal found 19/11C$ 379

Wed 27/116:30 a.m.YYZ - SEA

1 stop10h 51mWestJet

Wed 4/123:15 p.m.SEA - YYZ

1 stop18h 24mWestJet

Deal found 20/11C$ 417

Wed 4/128:00 p.m.YYZ - SEA

1 stop15h 57mMultiple Airlines

Wed 11/124:00 p.m.SEA - YYZ

1 stop11h 46mMultiple Airlines

Deal found 19/11C$ 426

Thu 5/125:35 p.m.YUL - SEA

1 stop18h 22mMultiple Airlines

Mon 9/122:34 p.m.SEA - YUL

2 stops23h 01mMultiple Airlines

Deal found 19/11C$ 559

Tue 24/126:55 p.m.YYZ - SEA

Nonstop5h 25mUnited Airlines

Sat 1/25:00 a.m.SEA - YYZ

2 stops15h 20mUnited Airlines

Deal found 19/11C$ 575

Tue 10/126:00 a.m.YUL - SEA

2 stops13h 34mDelta

Tue 17/129:40 a.m.SEA - YUL

2 stops11h 15mDelta

Deal found 19/11C$ 643

Tue 17/126:30 a.m.YKF - SEA

1 stop10h 51mWestJet

Wed 25/123:15 p.m.SEA - YKF

1 stop7h 01mWestJet

Deal found 19/11C$ 645

Thu 12/122:00 p.m.YTZ - SEA

3 stops30h 34mMultiple Airlines

Mon 16/129:21 p.m.SEA - YTZ

2 stops21h 04mMultiple Airlines

Deal found 19/11C$ 657

Tue 26/114:45 p.m.YUL - SEA

1 stop24h 36mWestJet

Tue 3/123:15 p.m.SEA - YUL

1 stop21h 21mWestJet

Deal found 19/11C$ 679

Mon 9/126:05 p.m.YHM - SEA

1 stop23h 16mWestJet

Wed 11/123:15 p.m.SEA - YHM

1 stop22h 58mWestJet

Deal found 20/11C$ 687

Best flights from Ontario to Seattle
Discover carefully curated flight deals from Ontario to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 November 2024.

Mon 9/124:20 p.m.YYZ - SEA

Nonstop5h 19mAlaska Airlines

Mon 30/127:26 a.m.SEA - YYZ

Nonstop4h 41mAlaska Airlines

Deal found 18/11C$ 363

Mon 20/16:40 p.m.YYZ - SEA

1 stop19h 36mMultiple Airlines

Mon 27/16:05 a.m.SEA - YYZ

Nonstop4h 45mMultiple Airlines

Deal found 20/11C$ 365

Mon 20/17:55 a.m.YYZ - SEA

1 stop9h 26mWestJet

Mon 27/13:15 p.m.SEA - YYZ

2 stops11h 45mWestJet

Deal found 20/11C$ 370

Thu 9/16:00 a.m.YYZ - SEA

1 stop7h 45mDelta

Tue 14/16:00 a.m.SEA - YYZ

1 stop10h 09mDelta

Deal found 19/11C$ 374

Thu 9/16:00 a.m.YYZ - SEA

1 stop9h 41mBritish Airways

Thu 16/15:22 a.m.SEA - YYZ

1 stop7h 53mBritish Airways

Deal found 19/11C$ 382

Thu 9/13:30 p.m.YYZ - SEA

2 stops10h 39mUnited Airlines

Tue 14/15:25 p.m.SEA - YYZ

1 stop10h 11mUnited Airlines

Deal found 19/11C$ 386

Thu 9/18:25 p.m.YTZ - SEA

2 stops21h 05mAir Canada

Thu 16/15:45 a.m.SEA - YTZ

2 stops13h 05mAir Canada

Deal found 19/11C$ 414

Mon 20/16:10 a.m.YYZ - SEA

1 stop11h 46mAmerican Airlines

Sun 26/112:45 a.m.SEA - YYZ

1 stop12h 30mAmerican Airlines

Deal found 20/11C$ 441

Mon 16/127:15 p.m.YYZ - SEA

Nonstop5h 25mAir Canada

Sun 29/123:05 p.m.SEA - YYZ

1 stop12h 04mAir Canada

Deal found 19/11C$ 421

Mon 13/16:15 a.m.YOW - SEA

1 stop11h 06mMultiple Airlines

Wed 15/110:13 a.m.SEA - YOW

2 stops19h 02mMultiple Airlines

Deal found 19/11C$ 525

Wed 8/15:45 a.m.YXU - SEA

2 stops11h 45mAir Canada

Wed 29/17:05 p.m.SEA - YXU

2 stops11h 10mAir Canada

Deal found 18/11C$ 484

Sun 12/18:00 p.m.YXU - SEA

1 stop21h 21mWestJet

Tue 11/23:15 p.m.SEA - YXU

1 stop24h 58mWestJet

Deal found 19/11C$ 536

Direct flights from Ontario to Seattle
Explore direct flight options from Ontario to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 November 2024.

Mon 9/124:20 p.m.YYZ - SEA

Nonstop5h 19mAlaska Airlines

Mon 30/127:26 a.m.SEA - YYZ

Nonstop4h 41mAlaska Airlines

Deal found 18/11C$ 363

Thu 9/17:05 p.m.YYZ - SEA

Nonstop5h 25mAir Canada

Thu 16/16:05 a.m.SEA - YYZ

Nonstop4h 45mAir Canada

Deal found 19/11C$ 374

Mon 16/127:15 p.m.YYZ - SEA

Nonstop5h 25mUnited Airlines

Wed 25/126:05 a.m.SEA - YYZ

Nonstop4h 45mUnited Airlines

Deal found 19/11C$ 575

Thu 5/127:45 p.m.YYZ - SEA

Nonstop5h 25mMultiple Airlines

Fri 3/17:26 a.m.SEA - YYZ

Nonstop4h 41mMultiple Airlines

Deal found 20/11C$ 755

Last-minute flights from Ontario to Seattle
Discover last-minute flight deals from Ontario to Seattle. Data last updated 20 November 2024 and is based on user searches.

Sat 23/116:15 a.m.YYZ - SEA

1 stop9h 32mAmerican Airlines

Tue 10/1211:59 p.m.SEA - YYZ

1 stop10h 11mAmerican Airlines

Deal found 18/11C$ 706

Sat 23/117:15 p.m.YYZ - SEA

Nonstop5h 25mUnited Airlines

Tue 10/125:00 a.m.SEA - YYZ

1 stop7h 02mUnited Airlines

Deal found 18/11C$ 834

Mon 25/119:45 a.m.YOW - SEA

1 stop13h 35mUnited Airlines

Tue 3/1211:55 p.m.SEA - YOW

2 stops10h 28mUnited Airlines

Deal found 20/11C$ 895

Tue 26/115:35 p.m.YUL - SEA

1 stop25h 48mMultiple Airlines

Tue 3/125:28 p.m.SEA - YUL

2 stops12h 30mMultiple Airlines

Deal found 19/11C$ 652

Tue 26/114:45 p.m.YUL - SEA

1 stop24h 36mWestJet

Tue 3/123:15 p.m.SEA - YUL

1 stop21h 21mWestJet

Deal found 19/11C$ 679

Wed 27/116:30 a.m.YYZ - SEA

1 stop10h 51mWestJet

Wed 4/123:15 p.m.SEA - YYZ

1 stop18h 24mWestJet

Deal found 20/11C$ 417

Wed 27/116:05 p.m.YHM - SEA

1 stop23h 16mWestJet

Wed 4/123:15 p.m.SEA - YHM

1 stop22h 58mWestJet

Deal found 20/11C$ 711

Thu 28/116:30 a.m.YKF - SEA

1 stop10h 51mWestJet

Wed 11/123:15 p.m.SEA - YKF

1 stop7h 01mWestJet

Deal found 19/11C$ 673

Tue 3/127:00 p.m.YYZ - SEA

1 stop17h 50mAir Canada

Mon 9/126:05 a.m.SEA - YYZ

Nonstop4h 45mAir Canada

Deal found 19/11C$ 785

Wed 4/128:00 p.m.YYZ - SEA

1 stop15h 57mMultiple Airlines

Wed 11/124:00 p.m.SEA - YYZ

1 stop11h 46mMultiple Airlines

Deal found 19/11C$ 426

Wed 4/124:20 p.m.YYZ - SEA

Nonstop5h 19mAlaska Airlines

Wed 11/127:22 a.m.SEA - YYZ

Nonstop4h 33mAlaska Airlines

Deal found 19/11C$ 567

Wed 4/126:30 a.m.YYZ - SEA

1 stop9h 16mDelta

Mon 9/1212:50 a.m.SEA - YYZ

1 stop9h 51mDelta

Deal found 19/11C$ 580

One-way flights from Ontario to Seattle
Search for one-way flight options from Ontario to Seattle. Find affordable one-way fares based on user searches. Data last updated 20 November 2024.

Mon 27/17:55 a.m.YYZ - SEA

1 stop9h 26mWestJet

Deal found 19/11C$ 213

Tue 7/16:00 a.m.YYZ - SEA

1 stop11h 24mDelta

Deal found 19/11C$ 224

Thu 30/111:00 a.m.YYZ - SEA

3 stops13h 20mUnited Airlines

Deal found 20/11C$ 231

Tue 10/126:30 a.m.YKF - SEA

1 stop10h 51mWestJet

Deal found 19/11C$ 234

Wed 8/16:30 a.m.YYZ - SEA

2 stops30h 17mMultiple Airlines

Deal found 19/11C$ 237

Tue 10/126:15 a.m.YYZ - SEA

2 stops14h 08mAmerican Airlines

Deal found 19/11C$ 241

Mon 16/124:10 p.m.YTZ - SEA

2 stops29h 11mMultiple Airlines

Deal found 19/11C$ 266

Tue 7/15:35 p.m.YUL - SEA

1 stop22h 36mMultiple Airlines

Deal found 19/11C$ 267

Tue 17/1212:35 p.m.YKF - SEA

2 stops31h 02mMultiple Airlines

Deal found 19/11C$ 276

Wed 4/126:10 p.m.YOW - SEA

1 stop17h 47mMultiple Airlines

Deal found 19/11C$ 280

Mon 27/16:05 p.m.YHM - SEA

1 stop23h 16mWestJet

Deal found 19/11C$ 330

Wed 19/26:00 a.m.YUL - SEA

2 stops11h 45mDelta

Deal found 19/11C$ 357

Find flights from Ontario to Seattle within your budget

Fly from

Fly to

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 9/12

4:20 p.m.-6:39 p.m.

Nonstop5h 19m

Seattle/Tacoma Intl

Mon 30/12

7:26 a.m.-3:07 p.m.

Nonstop4h 41m

C$ 363

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 20/1

6:40 p.m.-11:16 a.m.

1 stop19h 36m

Seattle/Tacoma Intl

Mon 27/1

6:05 a.m.-1:50 p.m.

Nonstop4h 45m

C$ 365

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 28/1

7:55 a.m.-2:21 p.m.

1 stop9h 26m

Seattle/Tacoma Intl

Sun 2/2

3:15 p.m.-6:17 a.m.

1 stop12h 02m

C$ 368

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 9/1

6:00 a.m.-10:45 a.m.

1 stop7h 45m

Seattle/Tacoma Intl

Sun 12/1

11:05 p.m.-9:20 a.m.

1 stop7h 15m

C$ 374

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 19/2

7:00 p.m.-9:50 a.m.

1 stop17h 50m

Seattle/Tacoma Intl

Tue 25/2

7:05 p.m.-6:09 a.m.

1 stop8h 04m

C$ 377

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 9/1

6:00 a.m.-12:41 p.m.

1 stop9h 41m

Seattle/Tacoma Intl

Thu 16/1

5:22 a.m.-4:15 p.m.

1 stop7h 53m

C$ 382

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 9/1

3:30 p.m.-11:09 p.m.

2 stops10h 39m

Seattle/Tacoma Intl

Tue 14/1

5:25 p.m.-6:36 a.m.

1 stop10h 11m

C$ 386

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 25/2

6:14 a.m.-7:05 p.m.

1 stop15h 51m

Seattle/Tacoma Intl

Tue 25/2

12:43 a.m.-4:15 p.m.

1 stop12h 32m

C$ 398

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 9/1

8:25 p.m.-2:30 p.m.

2 stops21h 05m

Seattle/Tacoma Intl

Thu 16/1

5:45 a.m.-9:50 p.m.

2 stops13h 05m

C$ 414

LondonSeattle

YXU - SEA

YXUSEA

London

Wed 8/1

5:45 a.m.-2:30 p.m.

2 stops11h 45m

Seattle/Tacoma Intl

Wed 29/1

7:05 p.m.-9:15 a.m.

2 stops11h 10m

C$ 484

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/11

Showing 1-10 of 51 results

...

Best time to book a flight from Ontario to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Seattle

Get recent, data-driven insights about flights from Ontario to Seattle including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Region of Ontario to Seattle?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Seattle (average of C$ 271). Flying from Region of Ontario to Seattle in March is currently the most expensive (average of C$ 418). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Seattle as you normally would.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown WestJet, Air Canada and American Airlines from Ontario to Seattle. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Alaska Airlines

8.0

Very good

9,461 reviews

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Delta

8.0

Very good

8,756 reviews

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

United Airlines

7.4

Good

9,171 reviews

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

WestJet

7.3

Good

2,811 reviews

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,461 reviews

Check prices

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Related info for your journey

What airport do you fly into for flights to Seattle from Ontario?
Located just 18.4 km from the city centre, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Ontario.
What are the cheapest airlines to fly from Region of Ontario to Seattle one-way?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 213. Users have also found prices from C$ 224 and C$ 231 on Delta and United Airlines, respectively.
What are the most popular routes from Region of Ontario to Seattle?
The most popular route from Region of Ontario to Seattle is Toronto Pearson Intl - Seattle/Tacoma Intl. You may also consider Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl or London - Seattle/Tacoma Intl.
What are the most reliable airlines from Region of Ontario to Seattle?
No one likes to see their flight delayed. When booking a flight from Region of Ontario to Seattle consider choosing Brussels Airlines (100%), Alaska Airlines (95%) or Hawaiian Airlines (94%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Region of Ontario to Seattle?
Looking at all options, your cheapest flight can be booked for C$ 233. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 347 on average our data indicates C$ 1,392 when flying from Region of Ontario to Seattle.
Can I find deals for flights from Ontario to Seattle that include hotel bookings?
Yes. In addition to deals on Ontario to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Seattle.
Can I find deals for business class flights from Ontario to Seattle?
Yes. Cheapflights offers flight deals from Ontario to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Region of Ontario to Seattle?
Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Seattle (average of C$ 271). Flying from Region of Ontario to Seattle in March is currently the most expensive (average of C$ 418). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ontario to Seattle

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 299	AverageC$ 608	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Alaska Airlines	CheapestC$ 363	AverageC$ 583	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Air Canada	CheapestC$ 366	AverageC$ 626	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 396	AverageC$ 674	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	CheapestC$ 410	AverageC$ 631	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	CheapestC$ 546	AverageC$ 713	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to Seattle?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Seattle become cheaper?

Of course! You can now track prices for flights from Ontario to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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View all available airlines

Cheap flights from Ontario to Seattle from C$ 213

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Seattle

Find flight deals from Ontario to Seattle

Cheapest flights from Ontario to SeattleExplore the most affordable flight options available from Ontario to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2024.

Explore the most affordable flight options available from Ontario to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2024.

Find flights from Ontario to Seattle within your budget

Best time to book a flight from Ontario to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Ontario with our price prediction graph.

Travel insights for flights from Ontario to Seattle

Get recent, data-driven insights about flights from Ontario to Seattle including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Region of Ontario to Seattle?

What is the cheapest time of day to fly from ON to SEA?

Find hourly flight availability from Ontario to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 November 2024.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown WestJet, Air Canada and American Airlines from Ontario to Seattle. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Ontario?

What are the cheapest airlines to fly from Region of Ontario to Seattle one-way?

What are the most popular routes from Region of Ontario to Seattle?

What are the most reliable airlines from Region of Ontario to Seattle?

What are the cheapest flights from Region of Ontario to Seattle?

Can I find deals for flights from Ontario to Seattle that include hotel bookings?

How can I find direct flights from Ontario to Seattle?

Can I find deals for business class flights from Ontario to Seattle?

What is the cheapest month to book a flight from Region of Ontario to Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Seattle

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Ontario to Seattle?

Can Cheapflights find flights from Ontario to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to Seattle become cheaper?

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Cheapest flights from Ontario to Seattle
Explore the most affordable flight options available from Ontario to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2024.