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$149+ Cheap flights from Ontario to Washington

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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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 julio 30, 2025.

Round-trip from

$227
(Air Canada)

One-way from

$149
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$402

Good round-trip deal

$349 or less

Good one-way deal

$209 or less
From Ontario to Washington
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One-way flight from Ontario to Washington
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Ontario to Washington.
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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 julio 30, 2025.

This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/52:00 pmYYZ - SEA
1 stop7h 36mAir Canada
dom. 9/147:15 pmSEA - YYZ
1 stop8h 45mAir Canada
Deal found 7/29$227
This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/171:30 pmYYZ - SEA
1 stop9h 59mWestJet
mar. 9/232:05 pmSEA - YYZ
1 stop7h 17mWestJet
Deal found 7/30$228
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/134:00 pmYYZ - PDX
1 stop10h 01mAir Canada
dom. 9/287:40 pmPDX - YYZ
1 stop7h 21mAir Canada
Deal found 7/29$234
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/194:10 pmYTZ - SEA
2 stops9h 06mAir Canada
mar. 9/95:30 amSEA - YTZ
2 stops12h 11mAir Canada
Deal found 7/29$237
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/14:45 pmYYZ - SEA
Nonstop5h 23mAlaska Airlines
dom. 10/57:18 amSEA - YYZ
Nonstop4h 42mAlaska Airlines
Deal found 7/30$253
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/226:00 amYKF - SEA
1 stop9h 58mWestJet
jue. 8/281:50 pmSEA - YKF
1 stop7h 56mWestJet
Deal found 7/29$265
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/109:45 amYYZ - PDX
1 stop12h 19mMultiple Airlines
mié. 9/1712:07 pmPDX - YYZ
2 stops15h 05mMultiple Airlines
Deal found 7/27$271
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/196:00 amYHM - SEA
1 stop9h 58mWestJet
mié. 8/271:50 pmSEA - YHM
1 stop7h 51mWestJet
Deal found 7/29$271
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/191:16 pmYYZ - PDX
1 stop13h 04mAmerican Airlines
mar. 8/265:34 amPDX - YYZ
1 stop7h 50mAmerican Airlines
Deal found 7/29$275
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/207:00 amYYZ - PDX
1 stop14h 31mUnited Airlines
dom. 9/2811:59 pmPDX - YYZ
1 stop6h 59mUnited Airlines
Deal found 7/27$277
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/37:00 amYUL - PDX
1 stop9h 05mWestJet
lun. 10/61:45 pmPDX - YUL
1 stop7h 56mWestJet
Deal found 7/28$282
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/196:04 amYYZ - PDX
1 stop8h 56mDelta
vie. 9/2612:45 amPDX - YYZ
1 stop7h 53mDelta
Deal found 7/27$289

Cheapflights Fare Finder

 
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 2,558,603 searches. Data last updated julio 30, 2025.
Use the filters below to find and compare flights from Ontario to Washington that are best for you.

Fly from

Ontario

Fly to

Washington

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

vie. 9/5

2:00 pm-6:36 pm

1 stop7h 36m

Seattle/Tacoma Intl

dom. 9/14

7:15 pm-7:00 am

1 stop8h 45m

$227

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mié. 9/17

1:30 pm-8:29 pm

1 stop9h 59m

Seattle/Tacoma Intl

mar. 9/23

2:05 pm-12:22 am

1 stop7h 17m

$228

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

sáb. 9/13

4:00 pm-11:01 pm

1 stop10h 01m

Portland

dom. 9/28

7:40 pm-6:01 am

1 stop7h 21m

$234

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

mar. 8/19

3:25 pm-8:45 pm

1 stop8h 20m

Seattle/Tacoma Intl

mar. 9/9

7:15 am-7:49 pm

1 stop9h 34m

$237

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mié. 10/1

4:45 pm-7:08 pm

Nonstop5h 23m

Seattle/Tacoma Intl

dom. 10/5

7:18 am-3:00 pm

Nonstop4h 42m

$253

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

vie. 8/22

6:00 am-12:58 pm

1 stop9h 58m

Seattle/Tacoma Intl

jue. 8/28

1:50 pm-12:46 am

1 stop7h 56m

$265

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

mié. 9/10

9:45 am-7:04 pm

1 stop12h 19m

Portland

mié. 9/17

12:07 pm-6:12 am

2 stops15h 05m

$271

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

mar. 8/19

6:00 am-12:58 pm

1 stop9h 58m

Seattle/Tacoma Intl

mié. 8/27

1:50 pm-12:41 am

1 stop7h 51m

$271

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

mar. 8/19

1:16 pm-11:20 pm

1 stop13h 04m

Portland

mar. 8/26

5:34 am-4:24 pm

1 stop7h 50m

$275

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

mié. 8/20

7:00 am-6:31 pm

1 stop14h 31m

Portland

sáb. 9/27

10:46 am-8:44 pm

1 stop6h 58m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Washington

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 $238). Flying from Region of Ontario to State of Washington in June is currently the most expensive (average of $389). 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 julio 30, 2025.

When flying from Region of Ontario to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 julio 30, 2025.

The most flights from CAON to USWA are scheduled on a Tuesday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Region of Ontario to State of Washington?

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 julio 30, 2025.
Read through reviews of airlines operating flights from Ontario to Washington, such as 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
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
WestJet
7.2
Good
2,975 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave

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?

    The cheapest airlines for a one-way flight from Region of Ontario to State of Washington are Alaska Airlines ($149), WestJet ($152), and Air Canada ($153).

  • 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 $238). Flying from Region of Ontario to State of Washington in June is currently the most expensive (average of $389). 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.

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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 2,558,603 searches. Data last updated julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$213Average$389FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$240Average$446FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$243Average$402FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$250Average$465FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$277Average$277FlexibilityNo cancel feeOn-time71%
DeltaCheapest$289Average$353FlexibilityNo cancel feeOn-timeN/A

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