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Cheap flights from Washington to Ontario from C$ 107

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
25 Feb — 4 Mar1
1 adult

Cheap flight deals from Washington to Ontario

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

Round-trip from

C$ 266

One-way from

C$ 107

Popular in

April

Cheapest in

January

Average price

C$ 459

Good round-trip deal

C$ 806 or less

Good one-way deal

C$ 171 or less
8/4-22/4
  • 8/4-22/4
  • 2 total stops
  • 24h 52m total
  • Washington to Ontario
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2/4
  • 2/4
  • 1 total stop
  • 16h 28m total
  • Washington to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 31 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 Washington to Ontario.
Search Deals
Price to beat on a one-way flight from Washington to Ontario.
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Find flight deals from Washington to Ontario

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

Tue 8/46:13 p.m.PDX - YYZ
1 stop9h 30mMultiple Airlines
Tue 22/48:00 p.m.YYZ - PDX
1 stop15h 22mMultiple Airlines
Deal found 20/2C$ 266
Wed 2/49:48 a.m.SEA - YYZ
1 stop17h 55mMultiple Airlines
Tue 8/48:00 p.m.YYZ - SEA
1 stop18h 35mMultiple Airlines
Deal found 20/2C$ 293
Mon 7/43:15 p.m.SEA - YKF
1 stop7h 01mWestJet
Tue 8/46:30 a.m.YKF - SEA
1 stop10h 51mWestJet
Deal found 20/2C$ 341
Tue 11/311:48 a.m.SEA - YOW
1 stop25h 57mMultiple Airlines
Mon 17/36:10 p.m.YOW - SEA
1 stop20h 36mMultiple Airlines
Deal found 19/2C$ 375
Sun 6/411:30 a.m.SEA - YKF
2 stops10h 46mMultiple Airlines
Sun 13/49:05 p.m.YKF - SEA
1 stop20h 16mMultiple Airlines
Deal found 20/2C$ 388
Thu 22/57:05 a.m.SEA - YYZ
1 stop7h 17mWestJet
Mon 16/61:30 p.m.YYZ - SEA
1 stop9h 58mWestJet
Deal found 18/2C$ 391
Wed 28/51:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Sun 8/66:00 a.m.YHM - SEA
1 stop9h 58mWestJet
Deal found 20/2C$ 401
Thu 3/46:05 a.m.SEA - YYZ
Nonstop4h 55mAir Canada
Thu 10/47:05 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
Deal found 19/2C$ 415
Sat 5/45:45 a.m.SEA - YTZ
2 stops11h 52mAir Canada
Sat 12/44:20 p.m.YTZ - SEA
2 stops8h 43mAir Canada
Deal found 19/2C$ 419
Mon 3/38:28 p.m.PDX - YTZ
2 stops20h 22mMultiple Airlines
Tue 11/33:25 p.m.YTZ - PDX
2 stops25h 13mMultiple Airlines
Deal found 20/2C$ 419
Tue 11/37:18 a.m.SEA - YYZ
Nonstop4h 37mAlaska Airlines
Wed 19/34:20 p.m.YYZ - SEA
Nonstop5h 20mAlaska Airlines
Deal found 18/2C$ 429
Wed 19/35:00 a.m.SEA - YYZ
1 stop16h 22mUnited Airlines
Sun 23/37:05 p.m.YYZ - SEA
Nonstop5h 25mUnited Airlines
Deal found 19/2C$ 453

Find flights from Washington to Ontario within your budget

Customize your flight search to find flights from Washington to Ontario 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 February 2025.

Fly from

Washington

Fly to

Ontario

Route

Depart

Return

Price

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 8/4

6:13 p.m.-6:43 a.m.

1 stop9h 30m

Toronto Pearson Intl

Tue 22/4

8:00 p.m.-8:22 a.m.

1 stop15h 22m

C$ 266

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 2/4

9:48 a.m.-6:43 a.m.

1 stop17h 55m

Toronto Pearson Intl

Tue 8/4

8:00 p.m.-11:35 a.m.

1 stop18h 35m

C$ 293

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 7/4

3:15 p.m.-1:16 a.m.

1 stop7h 01m

Toronto Region of Waterloo Intl

Tue 8/4

6:30 a.m.-2:21 p.m.

1 stop10h 51m

C$ 341

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 11/3

11:48 a.m.-4:45 p.m.

1 stop25h 57m

Ottawa

Mon 17/3

6:10 p.m.-11:46 a.m.

1 stop20h 36m

C$ 375

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 6/4

11:30 a.m.-1:16 a.m.

2 stops10h 46m

Toronto Region of Waterloo Intl

Sun 13/4

9:05 p.m.-2:21 p.m.

1 stop20h 16m

C$ 388

SeattleHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Wed 28/5

1:50 p.m.-12:41 a.m.

1 stop7h 51m

Hamilton

Sun 8/6

6:00 a.m.-12:58 p.m.

1 stop9h 58m

C$ 401

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 5/4

5:45 a.m.-8:37 p.m.

2 stops11h 52m

Toronto Island

Sat 12/4

4:20 p.m.-10:03 p.m.

2 stops8h 43m

C$ 419

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Mon 3/3

8:28 p.m.-7:50 p.m.

2 stops20h 22m

Toronto Island

Tue 11/3

3:25 p.m.-1:38 p.m.

2 stops25h 13m

C$ 419

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 14/5

1:50 p.m.-12:24 a.m.

1 stop7h 34m

Toronto Pearson Intl

Wed 21/5

6:30 a.m.-12:58 p.m.

1 stop9h 28m

C$ 430

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 13/3

7:18 a.m.-2:55 p.m.

Nonstop4h 37m

Toronto Pearson Intl

Tue 18/3

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

Nonstop5h 24m

C$ 439

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 Washington to Ontario

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

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

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of C$ 167). Flying from State of Washington to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 WA to ON?

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

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

Weekly flight availability from State of Washington to Region of Ontario

Explore weekly flight availability from Washington to Ontario. 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 February 2025.

The most flights from USWA to CAON are scheduled on a Wednesday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Region of Ontario, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 20 February 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Washington to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,692 reviews
Check prices

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.2

Comfort

7.9

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 Washington to Ontario. 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 State of Washington to Region of Ontario one-way?

    The cheapest airlines for a one-way flight from State of Washington to Region of Ontario are Alaska Airlines (C$ 180), WestJet (C$ 188), and Delta (C$ 193).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of C$ 167). Flying from State of Washington to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 Washington to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Washington to Ontario

Discover the top 3 airlines that operate flights from Washington to Ontario. 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 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 231AverageC$ 837FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Alaska AirlinesCheapestC$ 379AverageC$ 683FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 493AverageC$ 789FlexibilityNo cancel feeOn-time69%
Search United 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 Washington to Ontario?

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 Ontario from Washington today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Washington to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Ontario from Washington shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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