Washington

$125+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
ene. 26 — feb. 21
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Washington with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Washington

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Washington (USWA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Round-trip from

$241
(United Airlines)

One-way from

$125
(Kiwi.com)

Good round-trip deal

$263 or less

Good one-way deal

$192 or less
From Ontario to Washington
One-way flight from Ontario to Washington
Price to beat on a round-trip flight from Ontario to Washington.
Price to beat on a one-way flight from Ontario to Washington.

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 enero 21, 2025.

This Trip.com deal was found by Cheapflights users on 1/20. 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.
jue. 5/18:00 amYYZ - SEA
1 stop8h 08mWestJet
sáb. 5/102:05 pmSEA - YYZ
2 stops12h 46mWestJet
Deal found 1/20$234
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
vie. 3/218:00 pmYYZ - SEA
1 stop16h 30mMultiple Airlines
lun. 3/2411:42 amSEA - YYZ
1 stop16h 01mMultiple Airlines
Deal found 1/20$237
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
mar. 2/114:20 pmYYZ - SEA
Nonstop5h 23mAlaska Airlines
mar. 2/187:18 amSEA - YYZ
Nonstop4h 37mAlaska Airlines
Deal found 1/19$241
This Trip.com deal was found by Cheapflights users on 1/21. 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.
mié. 3/266:15 amYOW - SEA
1 stop11h 06mWestJet
jue. 3/2711:30 amSEA - YOW
2 stops10h 14mWestJet
Deal found 1/21$242
This United Airlines deal was found by Cheapflights users on 1/20. 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.
mar. 3/47:05 pmYYZ - SEA
Nonstop5h 25mUnited Airlines
mié. 3/1212:55 pmSEA - YYZ
1 stop8h 27mUnited Airlines
Deal found 1/20$242
This Air Canada deal was found by Cheapflights users on 1/20. 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.
jue. 5/112:25 pmYTZ - SEA
1 stop10h 12mAir Canada
vie. 5/97:20 amSEA - YTZ
1 stop9h 30mAir Canada
Deal found 1/20$257
This Trip.com deal was found by Cheapflights users on 1/20. 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.
mié. 3/196:15 amYOW - SEA
1 stop11h 06mMultiple Airlines
vie. 4/43:15 pmSEA - YOW
2 stops22h 15mMultiple Airlines
Deal found 1/20$260
This Air Canada deal was found by Cheapflights users on 1/21. 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.
jue. 2/278:00 amYYZ - SEA
1 stop9h 30mAir Canada
vie. 2/287:05 pmSEA - YYZ
1 stop8h 04mAir Canada
Deal found 1/21$261
This Kissandfly.com deal was found by Cheapflights users on 1/21. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/137:05 pmYYZ - SEA
Nonstop5h 25mLufthansa
mié. 2/193:24 pmSEA - YYZ
1 stop13h 06mLufthansa
Deal found 1/21$268
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
lun. 2/248:00 pmYYZ - PDX
1 stop16h 21mMultiple Airlines
mar. 3/410:16 amPDX - YYZ
2 stops17h 01mMultiple Airlines
Deal found 1/19$278
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
vie. 2/212:50 pmYOW - PDX
2 stops21h 31mMultiple Airlines
mar. 2/258:28 pmPDX - YOW
1 stop17h 17mMultiple Airlines
Deal found 1/19$288
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
sáb. 3/14:20 pmYYZ - PDX
1 stop9h 36mAlaska Airlines
mar. 3/41:33 pmPDX - YYZ
1 stop22h 22mAlaska Airlines
Deal found 1/21$291

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 2,558,603 searches. Data last updated enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

vie. 3/21

8:00 pm-9:30 am

1 stop16h 30m

Seattle/Tacoma Intl

lun. 3/24

11:42 am-6:43 am

1 stop16h 01m

$237

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

lun. 4/21

7:55 am-2:21 pm

1 stop9h 26m

Seattle/Tacoma Intl

vie. 5/2

2:05 pm-5:51 am

2 stops12h 46m

$240

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mar. 2/11

4:20 pm-6:43 pm

Nonstop5h 23m

Seattle/Tacoma Intl

mar. 2/18

7:18 am-2:55 pm

Nonstop4h 37m

$241

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

mar. 3/4

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

mié. 3/12

12:55 pm-12:22 am

1 stop8h 27m

$242

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

mié. 3/26

6:15 am-2:21 pm

1 stop11h 06m

Seattle/Tacoma Intl

jue. 3/27

11:30 am-12:44 am

2 stops10h 14m

$242

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

mié. 3/19

6:15 am-2:21 pm

1 stop11h 06m

Seattle/Tacoma Intl

vie. 4/4

3:15 pm-4:30 pm

2 stops22h 15m

$260

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

jue. 2/27

8:00 am-2:30 pm

1 stop9h 30m

Seattle/Tacoma Intl

vie. 2/28

7:05 pm-6:09 am

1 stop8h 04m

$261

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

jue. 2/13

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

mié. 2/19

3:24 pm-7:30 am

1 stop13h 06m

$268

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

lun. 2/24

8:00 pm-9:21 am

1 stop16h 21m

Portland

mar. 3/4

10:16 am-6:17 am

2 stops17h 01m

$278

OttawaPortland

YOW - PDX

YOWPDX

Ottawa

vie. 2/21

2:50 pm-9:21 am

2 stops21h 31m

Portland

mar. 2/25

8:28 pm-4:45 pm

1 stop17h 17m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 60 results
1
2
3
...
6

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 $238). Flying from Region of Ontario to State of Washington in July is currently the most expensive (average of $411). 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 enero 21, 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 enero 21, 2025.

The most flights from CAON to USWA are scheduled on a Monday (4 on average). You will have fewer flight options on Wednesday, 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 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 enero 21, 2025.
Read reviews from past customers who have flown Delta, Air Canada and United Airlines from Ontario to Washington. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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

8.0
Very good
9,706 reviews
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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

8.0
Very good
8,521 reviews
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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

7.4
Good
8,984 reviews
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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

7.4
Good
349 reviews
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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

7.2
Good
10,000 reviews
8.0
Very good
9,706 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

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?

    The cheapest airlines for a one-way flight from Region of Ontario to State of Washington are United Airlines ($146), WestJet ($149), and Alaska Airlines ($151).

  • 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 July is currently the most expensive (average of $411). 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

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

Alternative routes for Ontario to Washington

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

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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$510FlexibilityNo cancel feeOn-time67%
WestJetCheapest$163Average$445FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$243Average$513FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$246Average$416FlexibilityNo cancel feeOn-time75%
DeltaCheapest$292Average$472FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$402Average$695FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.