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Cheap flights from Ontario to Washington from C$ 173

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
25 feb. — 4 mar.1
1 adult

Cheap flight deals from Ontario to Washington

Keep the following information in mind while searching for Ontario to Washington flight deals. Data was last updated 20 febrero 2025.

Round-trip from

C$ 332

One-way from

C$ 173

Popular in

May

Cheapest in

January

Average price

C$ 378

Good round-trip deal

C$ 380 or less

Good one-way deal

C$ 260 or less
4/4-9/4
  • 4/4-9/4
  • 2 total stops
  • 30h 56m total
  • Ontario to Washington
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25/3
  • 25/3
  • 1 total stop
  • 17h 55m total
  • Ontario to Washington
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Ontario to Washington.
Search Deals
Price to beat on a one-way flight from Ontario to Washington.
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Find flight deals from Ontario to Washington

Cheapest flights from Ontario to Washington
Explore the most affordable flight options available from Ontario to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 febrero 2025.

vie. 4/48:00 p.m.YYZ - SEA
1 stop15h 43mMultiple Airlines
mié. 9/412:30 p.m.SEA - YYZ
1 stop15h 13mMultiple Airlines
Deal found 20/2C$ 332
mar. 8/47:05 p.m.YYZ - SEA
Nonstop5h 21mUnited Airlines
mar. 15/46:05 a.m.SEA - YYZ
Nonstop4h 55mUnited Airlines
Deal found 19/2C$ 345
jue. 13/34:20 p.m.YYZ - SEA
Nonstop5h 24mAlaska Airlines
mié. 19/37:15 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 20/2C$ 352
jue. 3/48:00 p.m.YYZ - PDX
1 stop15h 47mMultiple Airlines
mar. 8/411:15 a.m.PDX - YYZ
2 stops16h 02mMultiple Airlines
Deal found 19/2C$ 358
vie. 4/47:05 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
dom. 6/46:05 a.m.SEA - YYZ
Nonstop4h 55mAir Canada
Deal found 20/2C$ 364
mar. 13/59:00 a.m.YYZ - SEA
2 stops14h 28mWestJet
mar. 20/57:05 a.m.SEA - YYZ
2 stops14h 28mWestJet
Deal found 19/2C$ 384
mar. 8/412:14 p.m.YYZ - SEA
1 stop13h 20mDelta
lun. 14/412:40 a.m.SEA - YYZ
1 stop7h 54mDelta
Deal found 19/2C$ 389
dom. 23/312:35 p.m.YYZ - SEA
1 stop12h 30mAmerican Airlines
sáb. 29/311:14 p.m.SEA - YYZ
1 stop20h 30mAmerican Airlines
Deal found 20/2C$ 398
mié. 2/410:00 a.m.YTZ - SEA
3 stops25h 43mMultiple Airlines
mar. 15/49:06 p.m.SEA - YTZ
2 stops18h 47mMultiple Airlines
Deal found 20/2C$ 416
mié. 19/312:20 p.m.YYZ - PDX
1 stop12h 26mDelta
mar. 25/312:59 a.m.PDX - YYZ
1 stop9h 34mDelta
Deal found 19/2C$ 422
lun. 28/46:00 a.m.YHM - SEA
1 stop9h 58mWestJet
sáb. 3/51:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Deal found 20/2C$ 425
mar. 18/31:30 p.m.YUL - SEA
3 stops22h 13mMultiple Airlines
mar. 25/39:48 a.m.SEA - YUL
3 stops35h 51mMultiple Airlines
Deal found 19/2C$ 425

Find flights from Ontario to Washington within your budget

Customize your flight search to find flights from Ontario to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 febrero 2025.

Fly from

Ontario

Fly to

Washington

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

vie. 4/4

8:00 p.m.-8:43 a.m.

1 stop15h 43m

Seattle/Tacoma Intl

mié. 9/4

12:30 p.m.-6:43 a.m.

1 stop15h 13m

C$ 332

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mar. 8/4

7:05 p.m.-9:26 p.m.

Nonstop5h 21m

Seattle/Tacoma Intl

mar. 15/4

6:05 a.m.-2:00 p.m.

Nonstop4h 55m

C$ 345

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

jue. 13/3

4:20 p.m.-6:44 p.m.

Nonstop5h 24m

Seattle/Tacoma Intl

mié. 19/3

7:15 a.m.-2:55 p.m.

Nonstop4h 40m

C$ 352

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

jue. 3/4

8:00 p.m.-8:47 a.m.

1 stop15h 47m

Portland

mar. 8/4

11:15 a.m.-6:17 a.m.

2 stops16h 02m

C$ 358

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

vie. 4/4

7:05 p.m.-9:26 p.m.

Nonstop5h 21m

Seattle/Tacoma Intl

dom. 6/4

6:05 a.m.-2:00 p.m.

Nonstop4h 55m

C$ 364

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

jue. 1/5

9:00 a.m.-8:28 p.m.

2 stops14h 28m

Seattle/Tacoma Intl

mar. 6/5

2:05 p.m.-12:24 a.m.

1 stop7h 19m

C$ 372

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mar. 8/4

12:14 p.m.-10:34 p.m.

1 stop13h 20m

Seattle/Tacoma Intl

lun. 14/4

12:40 a.m.-11:34 a.m.

1 stop7h 54m

C$ 389

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

dom. 23/3

12:35 p.m.-10:05 p.m.

1 stop12h 30m

Seattle/Tacoma Intl

sáb. 29/3

11:14 p.m.-10:44 p.m.

1 stop20h 30m

C$ 398

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

mié. 2/4

10:00 a.m.-8:43 a.m.

3 stops25h 43m

Seattle/Tacoma Intl

mar. 15/4

9:06 p.m.-6:53 p.m.

2 stops18h 47m

C$ 416

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

mié. 19/3

12:20 p.m.-9:46 p.m.

1 stop12h 26m

Portland

mar. 25/3

12:59 a.m.-1:33 p.m.

1 stop9h 34m

C$ 422

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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 Washington

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

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to State of Washington (average of C$ 262). Flying from Region of Ontario to State of Washington in April is currently the most expensive (average of C$ 382). 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 WA?

Find hourly flight availability from Ontario to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 febrero 2025.

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 State of Washington as you normally would.

Weekly flight availability from Region of Ontario to State of Washington

Explore weekly flight availability from Ontario to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 20 febrero 2025.

The most flights from CAON to USWA are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington 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 State of Washington when rainfall is around 18.0 mm.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated 20 febrero 2025.
To help decide which airline to fly from Ontario to Washington, see what other customers have to say about Alaska Airlines, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,692 reviews
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,220 reviews
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,766 reviews
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

WestJet
7.2
Good
2,801 reviews
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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

  • What are the cheapest airlines to fly from Region of Ontario to State of Washington one-way?

    C$ 217 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from C$ 220 and C$ 233, respectively.

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

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

  • How can I find direct flights from Ontario to Washington?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Washington 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 State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to State of Washington (average of C$ 262). Flying from Region of Ontario to State of Washington in April is currently the most expensive (average of C$ 382). 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

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Alternative routes for Ontario to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Washington

Discover the top 6 airlines that operate flights from Ontario to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 febrero 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 304AverageC$ 562FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 338AverageC$ 747FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air CanadaCheapestC$ 348AverageC$ 737FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 379AverageC$ 891FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 411AverageC$ 605FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 454AverageC$ 656FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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 Washington?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Washington. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington from Ontario.

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

Need flexible booking options for your flight to Washington 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 Washington become cheaper?

Of course! You can now track prices for flights from Ontario to Washington 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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