What is the cheapest airline that flies from Washington to Ontario?

United Airlines, American Airlines, and Delta are the most popular carriers operating from Washington to Ontario

Which airlines fly to Region of Ontario?

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Region of Ontario from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 51% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

How long is the flight from State of Washington to Region of Ontario?

The flight from State of Washington to Region of Ontario depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Toronto Pearson Intl Airport (the most popular airport in Region of Ontario), then the flight time is 4h 32m on average. If you fly from Spokane (another popular airport in State of Washington) to Toronto Pearson Intl Airport, then the average flight time is 6h 16m.

When did momondo last update prices for flights from Washington to Ontario?

Prices for flights from Washington to Ontario are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Ontario?

There are 3 operators available for flights from Washington to Ontario as of September 2026.

How old do you have to be to fly from Washington to Ontario?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Ontario.

What documentation or ID do you need to fly to Ontario?

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 212 Cheap Flights from Washington to Ontario in 2026/27

Q: How many flights depart from State of Washington to Region of Ontario on average per day?

As of September 2026, there are 4 flights per day flying from State of Washington to Region of Ontario. The most common time of day flights depart is 8:00a.m., with 100% of flights taking off at noon.

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Find the cheapest flights from Washington to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:30 a.m. - 10:45 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 15m1 stop Calgary

12:40 p.m. - 6:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 05m2 stops Winnipeg Calgary

C$ 467WestJet

Thu, 8 Oct - Sat, 17 Oct

7:35 p.m. - 5:45 a.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

7h 10m1 stop Calgary

12:40 p.m. - 6:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 05m2 stops Winnipeg Calgary

C$ 467WestJet

Sat, 10 Oct - Sat, 17 Oct

10:30 a.m. - 10:45 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 15m1 stop Calgary

12:40 p.m. - 6:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 05m2 stops Winnipeg Calgary

C$ 467WestJet

Thu, 15 Oct - Sat, 17 Oct

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:10 a.m. - 6:31 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

15h 21m2 stops Calgary Vancouver Intl

C$ 531Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:55 p.m. - 2:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

22h 45m1 stop Calgary

C$ 535Multiple Airlines

Fri, 23 Oct - Mon, 26 Oct

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:55 p.m. - 2:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

22h 45m1 stop Calgary

C$ 538Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

5:15 p.m. - 7:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 30mdirect

C$ 645Alaska Airlines

Sat, 7 Nov - Sat, 14 Nov

8:21 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 44mdirect

5:15 p.m. - 7:43 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 28mdirect

C$ 668Alaska Airlines

Fri, 19 Feb - Sat, 6 Mar

7:55 a.m. - 3:36 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 799Air Canada

Sat, 24 Oct - Sat, 31 Oct

7:55 a.m. - 3:36 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 802Air Canada

Sat, 24 Oct - Sat, 31 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

6:00 a.m. - 5:20 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

8h 20m1 stop Detroit Metropolitan Wayne County

12:00 p.m. - 7:04 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

10h 04m1 stop Vancouver Intl

C$ 707WestJet

Thu, 1 Oct - Fri, 2 Oct

11:05 p.m. - 11:18 a.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 13m1 stop Detroit Metropolitan Wayne County

8:15 a.m. - 4:53 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

11h 38m1 stop Vancouver Intl

C$ 724WestJet

Mon, 28 Sep - Wed, 30 Sep

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 830WestJet

Tue, 29 Sep - Tue, 20 Oct

3:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

11h 00m1 stop Calgary

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 856Multiple Airlines

Tue, 29 Sep - Tue, 20 Oct

7:35 p.m. - 12:20 a.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

25h 45m1 stop Calgary

10:00 a.m. - 6:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

11h 45m1 stop Calgary

C$ 902Multiple Airlines

Tue, 29 Sep - Mon, 19 Oct

10:57 a.m. - 4:40 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

26h 43m2 stops Las Vegas Harry Reid Intl Orlando

10:00 a.m. - 6:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

11h 45m1 stop Calgary

C$ 932Multiple Airlines

Tue, 29 Sep - Mon, 19 Oct

7:52 a.m. - 3:45 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 53mdirect

4:55 p.m. - 7:26 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 31mdirect

C$ 1,255Alaska Airlines

Sat, 26 Sep - Thu, 15 Oct

7:52 a.m. - 3:45 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 53mdirect

4:55 p.m. - 7:26 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 31mdirect

C$ 1,361Alaska Airlines

Mon, 28 Sep - Sat, 3 Oct

8:00 a.m. - 3:41 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:45 p.m. - 9:04 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mdirect

C$ 1,536Air Canada

Wed, 30 Sep - Mon, 5 Oct

8:00 a.m. - 3:41 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:30 p.m. - 10:47 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

7h 17m1 stop Vancouver Intl

C$ 1,543Air Canada

Wed, 30 Sep - Sun, 4 Oct

Cheap direct flights

Enter your travel dates to find the best prices.

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

5:15 p.m. - 7:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 30mdirect

C$ 645Alaska Airlines

Sat, 7 Nov - Sat, 14 Nov

8:21 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 44mdirect

5:15 p.m. - 7:43 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 28mdirect

C$ 668Alaska Airlines

Fri, 19 Feb - Sat, 6 Mar

8:20 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 45mdirect

5:15 p.m. - 7:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 30mdirect

C$ 679Alaska Airlines

Tue, 27 Oct - Wed, 4 Nov

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

5:15 p.m. - 7:45 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 30mdirect

C$ 679Alaska Airlines

Wed, 4 Nov - Tue, 10 Nov

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 734Multiple Airlines

Fri, 6 Nov - Fri, 13 Nov

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 743Multiple Airlines

Sun, 8 Nov - Sun, 15 Nov

8:19 a.m. - 4:05 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 46mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 753Multiple Airlines

Sun, 1 Nov - Wed, 4 Nov

7:55 a.m. - 3:36 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 799Air Canada

Sat, 24 Oct - Sat, 31 Oct

7:55 a.m. - 3:36 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 802Air Canada

Sat, 24 Oct - Sat, 31 Oct

7:45 a.m. - 3:25 p.m.SEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mdirect

6:25 p.m. - 8:59 p.m.YYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mdirect

C$ 905Air Canada

Tue, 1 Dec - Wed, 9 Dec

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Air Canada flights from State of Washington to Region of Ontario

Our best Air Canada deals on State of Washington to Region of Ontario flight tickets

Air Canada

6 Nov

SEA8:40 a.m.Seattle/Tacoma Intl

11h 31m

2 stops

YOW11:11 p.m.Ottawa

13 Nov

YOW5:45 a.m.Ottawa

11h 52m

2 stops

SEA2:37 p.m.Seattle/Tacoma Intl

C$ 764

Air Canada

9 Dec

GEG9:00 a.m.Spokane

11h 59m

2 stops

YYZ11:59 p.m.Toronto Pearson Intl

12 Dec

YYZ7:00 a.m.Toronto Pearson Intl

18h 15m

2 stops

GEG10:15 p.m.Spokane

C$ 860

Air Canada

9 Dec

GEG9:00 a.m.Spokane

11h 59m

2 stops

YYZ11:59 p.m.Toronto Pearson Intl

12 Dec

YYZ12:00 p.m.Toronto Pearson Intl

13h 15m

2 stops

GEG10:15 p.m.Spokane

C$ 885

Delta flights from State of Washington to Region of Ontario

Our best Delta deals on State of Washington to Region of Ontario flight tickets

Delta

11 Mar

GEG10:45 p.m.Spokane

13h 34m

2 stops

YYZ3:19 p.m.Toronto Pearson Intl

15 Mar

YYZ12:25 p.m.Toronto Pearson Intl

14h 17m

2 stops

GEG11:42 p.m.Spokane

C$ 812

Delta

13 Nov

GEG7:00 a.m.Spokane

12h 57m

2 stops

YYZ10:57 p.m.Toronto Pearson Intl

15 Nov

YYZ6:30 a.m.Toronto Pearson Intl

14h 54m

2 stops

GEG6:24 p.m.Spokane

C$ 856

Delta

13 Nov

GEG7:00 a.m.Spokane

12h 57m

2 stops

YYZ10:57 p.m.Toronto Pearson Intl

15 Nov

YYZ6:30 a.m.Toronto Pearson Intl

14h 54m

2 stops

GEG6:24 p.m.Spokane

C$ 887

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 8/10

10:30 a.m.-10:45 p.m.

1 stop9h 15m

Toronto Pearson Intl

Sat 17/10

12:40 p.m.-6:45 p.m.

2 stops9h 05m

C$ 467

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-5:45 a.m.

1 stop7h 10m

Toronto Pearson Intl

Sat 17/10

12:40 p.m.-6:45 p.m.

2 stops9h 05m

C$ 467

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 15/10

10:30 a.m.-10:45 p.m.

1 stop9h 15m

Toronto Pearson Intl

Sat 17/10

12:40 p.m.-6:45 p.m.

2 stops9h 05m

C$ 467

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Wed 21/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Wed 28/10

6:10 a.m.-6:31 p.m.

2 stops15h 21m

C$ 531

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Fri 23/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Mon 26/10

6:55 p.m.-2:40 p.m.

1 stop22h 45m

C$ 535

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Thu 22/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Thu 29/10

6:55 p.m.-2:40 p.m.

1 stop22h 45m

C$ 538

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 7/11

8:19 a.m.-4:05 p.m.

Nonstop4h 46m

Toronto Pearson Intl

Sat 14/11

5:15 p.m.-7:45 p.m.

Nonstop5h 30m

C$ 645

Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 19/2

8:21 a.m.-4:05 p.m.

Nonstop4h 44m

Toronto Pearson Intl

Sat 6/3

5:15 p.m.-7:43 p.m.

Nonstop5h 28m

C$ 668

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 24/10

7:55 a.m.-3:36 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Sat 31/10

6:25 p.m.-8:59 p.m.

Nonstop5h 34m

C$ 799

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 24/10

7:55 a.m.-3:36 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Sat 31/10

6:25 p.m.-8:59 p.m.

Nonstop5h 34m

C$ 802

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, January is the cheapest month to fly from State of Washington to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 393. If you are unable to visit Region of Ontario during the month of January, then departing from State of Washington during the month March is also very affordable. Most momondo users find prices during this month for around C$ 455.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from State of Washington to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 762. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 1,107.

What is the cheapest Washington to Ontario flight route?

Fly from Seattle/Tacoma Intl to Toronto Pearson Intl for the best Washington - Ontario flight prices

How far in advance should I book a flight from Washington to Ontario?

You are more likely to see cheaper flights to Region of Ontario from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 575 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from State of Washington for as low as C$ 449 on momondo.

What cabin class options are available on State of Washington to Region of Ontario flights?

There are 3 cabin classes available to choose from on State of Washington to Region of Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Region of Ontario.

Cheap State of Washington to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Region of Ontario

Best price found	C$ 212
Fastest flight time	4h 32m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from State of Washington in the past 72 hours is C$ 212. The best round-trip flight deal from State of Washington to Region of Ontario found on momondo in the last 72 hours is C$ 467.

The fastest flight from State of Washington to Region of Ontario takes 4h 32m

Direct flights go from State of Washington to Region of Ontario every day.

There are 125 airports in Region of Ontario. From State of Washington there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from Washington to Ontario

When did momondo last update prices for flights from Washington to Ontario?
Prices for flights from Washington to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Ontario?
There are 3 operators available for flights from Washington to Ontario as of September 2026.
How old do you have to be to fly from Washington to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to Region of Ontario is Airbus A220-300 (15.79% of total bookings). The next most popular plane models are Boeing 737-900 Passenger/BBJ3 (winglets) (12.28%), Boeing 777-300ER (8.19%), and Airbus A321neo (7.02%).

Best airlines flying from State of Washington to Region of Ontario

Compare and see reviews for airlines that fly from State of Washington to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom C$ 287	Free Cancellation	Rating 7.9 12,966 reviews	Search Alaska Airlines flights
WestJet	PriceFrom C$ 359	Free Cancellation	Rating 7.2 3,448 reviews	Search WestJet flights
Air Canada	PriceFrom C$ 373	Free Cancellation	Rating 7.1 11,683 reviews	Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Washington.

Can I find flights from Washington to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Washington.

I’m not ready to book a flight from Washington to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular Cities in Ontario

Flights to Torontofrom C$ 160

Flights to Vancouverfrom C$ 109

Flights to Calgaryfrom C$ 117

Flights to Montrealfrom C$ 216

Flights to Halifaxfrom C$ 168

Flights to Winnipegfrom C$ 165

Flights to Ottawafrom C$ 181

Flights to Kelownafrom C$ 121

Flights to Saskatoonfrom C$ 90

Flights to St. John'sfrom C$ 209

Flights to Reginafrom C$ 202

Flights to Québec Cityfrom C$ 315

Cheap flights from Washington to Ontario from C$ 212

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Ontario departing on 22/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Washington to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Air Canada flights from State of Washington to Region of Ontario

Our best Air Canada deals on State of Washington to Region of Ontario flight tickets

Delta flights from State of Washington to Region of Ontario

Our best Delta deals on State of Washington to Region of Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Ontario that are best for you.

See travel insights to Ontario from

How to get the cheapest flight ticket from State of Washington to Region of Ontario

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

What is the cheapest Washington to Ontario flight route?

How far in advance should I book a flight from Washington to Ontario?

What cabin class options are available on State of Washington to Region of Ontario flights?

Can stopping save me money on State of Washington to Region of Ontario flights?

What is the cheapest airline that flies from Washington to Ontario?

Which airlines fly to Region of Ontario?

How many flights depart from State of Washington to Region of Ontario on average per day?

How many flights depart from State of Washington to Region of Ontario on average per week?

How long is the flight from State of Washington to Region of Ontario?

Cheap State of Washington to Region of Ontario flight deals and tips

Best price found

Fastest flight time

Direct flights

Airports in Region of Ontario

Frequently asked questions about flying from Washington to Ontario

Best airlines flying from State of Washington to Region of Ontario

Compare and see reviews for airlines that fly from State of Washington to Region of Ontario with momondo

Why use momondo?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo

State of Washington flight routes

According to popular flight searches on momondo this year

Region of Ontario flight routes

According to popular flight searches on momondo this year

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