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$122+ Cheap flights from Washington to Ontario

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Washington to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to Ontario (CAON). 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 November 20, 2024.

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 November 20, 2024.

This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/107:22 amSEA - YYZ
Nonstop4h 33mAlaska Airlines
Thu 12/124:20 pmYYZ - SEA
Nonstop5h 19mAlaska Airlines
Deal found 11/19$276
This Expedia deal was found by Cheapflights users on 11/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:22 amSEA - YYZ
Nonstop4h 33mMultiple Airlines
Thu 12/127:55 amYYZ - SEA
1 stop9h 26mMultiple Airlines
Deal found 11/19$280
This Justfly.com deal was found by Cheapflights users on 11/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/253:15 pmSEA - YYZ
2 stops11h 45mWestJet
Tue 1/147:55 amYYZ - SEA
1 stop9h 26mWestJet
Deal found 11/20$285
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/256:05 amSEA - YYZ
Nonstop4h 45mUnited Airlines
Tue 1/147:05 pmYYZ - SEA
Nonstop5h 25mUnited Airlines
Deal found 11/20$304
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:50 amSEA - YYZ
1 stop9h 51mDelta
Thu 12/126:15 pmYYZ - SEA
1 stop9h 06mDelta
Deal found 11/20$316
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:05 amSEA - YYZ
Nonstop4h 45mAir Canada
Tue 1/711:00 pmYYZ - SEA
1 stop13h 50mAir Canada
Deal found 11/19$328
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:15 amSEA - YYZ
1 stop7h 41mAmerican Airlines
Fri 12/136:20 pmYYZ - SEA
1 stop7h 55mAmerican Airlines
Deal found 11/19$329
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/166:05 amGEG - YYZ
1 stop6h 54mDelta
Tue 1/72:45 pmYYZ - GEG
1 stop11h 06mDelta
Deal found 11/20$343
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Wed 12/252:55 pmPDX - YYZ
1 stop12h 51mMultiple Airlines
Sun 1/57:25 pmYYZ - PDX
1 stop25h 34mMultiple Airlines
Deal found 11/19$349
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Sun 12/86:46 amPDX - YUL
2 stops14h 42mMultiple Airlines
Thu 12/125:35 pmYUL - PDX
1 stop19h 12mMultiple Airlines
Deal found 11/20$349
This Trip.com deal was found by Cheapflights users on 11/20. 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.
Wed 12/43:15 pmSEA - YKF
1 stop7h 01mWestJet
Sat 12/76:30 amYKF - SEA
1 stop11h 08mWestJet
Deal found 11/20$353
This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:05 amGEG - YYZ
1 stop14h 47mUnited Airlines
Tue 12/316:35 pmYYZ - GEG
2 stops21h 15mUnited Airlines
Deal found 11/19$358

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

7:27 am-3:05 pm

Nonstop4h 38m

Toronto Pearson Intl

Mon 2/3

4:20 pm-6:43 pm

Nonstop5h 23m

$257

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

7:27 am-3:05 pm

Nonstop4h 38m

Toronto Pearson Intl

Mon 2/3

7:55 am-2:21 pm

1 stop9h 26m

$259

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

3:15 pm-5:58 am

2 stops11h 43m

Toronto Pearson Intl

Mon 2/3

8:00 am-2:21 pm

1 stop9h 21m

$261

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 12/25

6:05 am-1:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Tue 1/14

7:05 pm-9:30 pm

Nonstop5h 25m

$304

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 3/4

6:05 am-1:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Fri 3/7

7:05 pm-9:30 pm

Nonstop5h 25m

$305

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 12/9

12:50 am-1:41 pm

1 stop9h 51m

Toronto Pearson Intl

Thu 12/12

6:15 pm-12:21 am

1 stop9h 06m

$316

SpokaneToronto

GEG - YYZ

GEGYYZ

Spokane

Fri 1/10

8:30 pm-3:05 pm

1 stop15h 35m

Toronto Pearson Intl

Sat 1/18

4:20 pm-9:09 pm

1 stop7h 49m

$316

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 1/30

12:45 am-4:15 pm

1 stop12h 30m

Toronto Pearson Intl

Mon 2/3

5:10 pm-11:11 pm

1 stop9h 01m

$329

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 1/24

11:30 am-12:45 am

2 stops10h 15m

Ottawa

Tue 1/28

6:15 am-2:21 pm

1 stop11h 06m

$329

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sun 1/26

9:41 pm-10:45 pm

3 stops22h 04m

Montreal Pierre Elliott Trudeau Intl

Wed 1/29

11:50 am-9:21 am

3 stops24h 31m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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 $242). Flying from State of Washington to Region of Ontario in July is currently the most expensive (average of $359). 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 November 20, 2024.

When flying from State of Washington to Region of Ontario, 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 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 November 20, 2024.

The most flights from USWA to CAON 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 (1 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 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 November 20, 2024.
Read reviews from past customers who have flown Air Canada, American Airlines and Delta from Washington to Ontario. 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

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Alaska Airlines
8.0
Very good
9,461 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Delta
8.0
Very good
8,756 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

KLM
7.8
Good
1,350 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Porter Airlines
7.8
Good
288 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

United Airlines
7.4
Good
9,171 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

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?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $122. United Airlines flights start at $128 while deals on Delta start at $132 one-way.

  • 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 $242). Flying from State of Washington to Region of Ontario in July is currently the most expensive (average of $359). 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 Washington to Ontario

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

Discover the top 6 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$172Average$681FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$178Average$505FlexibilityNo cancel feeOn-time67%
WestJetCheapest$235Average$530FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$248Average$596FlexibilityNo cancel feeOn-time75%
DeltaCheapest$366Average$580FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$464Average$844FlexibilityNo cancel feeOn-time71%
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