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Cheap flights from Washington to Ontario from C$ 199

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 28/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
2:30 p.m. - 5:10 a.m.
PDX
-
YYZ
11h 40m
2 stops
WestJet Logo
9:00 a.m. - 1:50 p.m.
YYZ
-
PDX
7h 50m
1 stop
C$ 385WestJet
Fri, 25 Sep - Fri, 2 Oct
WestJet Logo
2:30 p.m. - 1:05 a.m.
PDX
-
YYZ
7h 35m
1 stop
WestJet Logo
8:00 a.m. - 1:50 p.m.
YYZ
-
PDX
8h 50m
1 stop
C$ 388WestJet
Fri, 25 Sep - Fri, 2 Oct
WestJet Logo
2:30 p.m. - 1:05 a.m.
PDX
-
YYZ
7h 35m
1 stop
WestJet Logo
9:00 a.m. - 1:50 p.m.
YYZ
-
PDX
7h 50m
1 stop
C$ 394WestJet
Wed, 23 Sep - Fri, 2 Oct
WestJet Logo
2:30 p.m. - 5:10 a.m.
PDX
-
YYZ
11h 40m
2 stops
WestJet Logo
9:00 a.m. - 1:50 p.m.
YYZ
-
PDX
7h 50m
1 stop
C$ 418WestJet
Fri, 25 Sep - Wed, 30 Sep
Air Canada Logo
7:45 p.m. - 7:45 a.m.
PDX
-
YTZ
9h 00m
2 stops
Air Canada Logo
8:55 p.m. - 7:06 p.m.
YTZ
-
PDX
25h 11m
2 stops
C$ 553Air Canada
Mon, 28 Sep - Fri, 2 Oct
Multiple Airlines Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
Multiple Airlines Logo
6:00 p.m. - 10:42 p.m.
YUL
-
SEA
7h 42m
1 stop
C$ 566Multiple Airlines
Tue, 13 Oct - Thu, 15 Oct
Air Canada Logo
3:00 p.m. - 7:10 a.m.
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
10:40 a.m. - 9:04 p.m.
YUL
-
SEA
13h 24m
2 stops
C$ 572Air Canada
Tue, 13 Oct - Thu, 15 Oct
United Airlines Logo
11:30 p.m. - 10:06 a.m.
PDX
-
YTZ
7h 36m
1 stop
United Airlines Logo
12:15 p.m. - 12:35 a.m.
YTZ
-
PDX
15h 20m
2 stops
C$ 617United Airlines
Sat, 24 Oct - Tue, 27 Oct
United Airlines Logo
11:02 p.m. - 10:07 a.m.
PDX
-
YTZ
8h 05m
1 stop
United Airlines Logo
7:25 p.m. - 9:29 a.m.
YTZ
-
PDX
17h 04m
1 stop
C$ 631United Airlines
Thu, 27 Aug - Mon, 31 Aug
Multiple Airlines Logo
6:00 a.m. - 6:00 p.m.
SEA
-
YTZ
9h 00m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:30 a.m.
YTZ
-
SEA
14h 50m
1 stop
C$ 705Multiple Airlines
Wed, 9 Sep - Fri, 18 Sep

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United Airlines flights from State of Washington to Region of Ontario

Our best United Airlines deals on State of Washington to Region of Ontario flight tickets
United Airlines
13 Nov
PDX10:59 p.m.Portland
12h 04m
1 stop
YYZ2:03 p.m.Toronto Pearson Intl
14 Nov
YYZ5:55 p.m.Toronto Pearson Intl
8h 17m
1 stop
PDX11:12 p.m.Portland
C$ 451
United Airlines
13 Nov
PDX3:36 p.m.Portland
12h 54m
1 stop
YYZ7:30 a.m.Toronto Pearson Intl
14 Nov
YYZ10:53 a.m.Toronto Pearson Intl
16h 42m
2 stops
PDX12:35 a.m.Portland
C$ 459
United Airlines
1 Oct
PDX11:30 p.m.Portland
13h 16m
1 stop
YYZ3:46 p.m.Toronto Pearson Intl
2 Oct
YYZ7:00 p.m.Toronto Pearson Intl
17h 50m
1 stop
PDX9:50 a.m.Portland
C$ 465

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
24 Sep
PDX5:40 a.m.Portland
8h 04m
1 stop
YYZ4:44 p.m.Toronto Pearson Intl
28 Sep
YYZ6:15 a.m.Toronto Pearson Intl
9h 58m
1 stop
PDX1:13 p.m.Portland
C$ 499
Delta
17 Sep
PDX11:10 p.m.Portland
6h 43m
1 stop
YYZ8:53 a.m.Toronto Pearson Intl
28 Sep
YYZ6:10 p.m.Toronto Pearson Intl
6h 50m
1 stop
PDX10:00 p.m.Portland
C$ 543
Delta
28 Oct
PDX6:04 a.m.Portland
12h 54m
1 stop
YYZ9:58 p.m.Toronto Pearson Intl
1 Nov
YYZ2:15 p.m.Toronto Pearson Intl
10h 38m
1 stop
PDX9:53 p.m.Portland
C$ 546

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Region of 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, momondo users made 96,600 searches. Data last updated 26 June 2026.
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

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 25/9

2:30 p.m.-5:10 a.m.

2 stops11h 40m

Toronto Pearson Intl

Fri 2/10

9:00 a.m.-1:50 p.m.

1 stop7h 50m

C$ 385

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 25/9

2:30 p.m.-1:05 a.m.

1 stop7h 35m

Toronto Pearson Intl

Fri 2/10

8:00 a.m.-1:50 p.m.

1 stop8h 50m

C$ 388
Quickest round-trip

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 23/9

2:30 p.m.-1:05 a.m.

1 stop7h 35m

Toronto Pearson Intl

Fri 2/10

9:00 a.m.-1:50 p.m.

1 stop7h 50m

C$ 394

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 25/9

2:30 p.m.-5:10 a.m.

2 stops11h 40m

Toronto Pearson Intl

Wed 30/9

9:00 a.m.-1:50 p.m.

1 stop7h 50m

C$ 418

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Mon 28/9

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

2 stops9h 00m

Toronto Island

Fri 2/10

8:55 p.m.-7:06 p.m.

2 stops25h 11m

C$ 553

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 13/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

6:00 p.m.-10:42 p.m.

1 stop7h 42m

C$ 566

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 13/10

3:00 p.m.-7:10 a.m.

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

10:40 a.m.-9:04 p.m.

2 stops13h 24m

C$ 572

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Sat 24/10

11:30 p.m.-10:06 a.m.

1 stop7h 36m

Toronto Island

Tue 27/10

12:15 p.m.-12:35 a.m.

2 stops15h 20m

C$ 617

PortlandToronto

PDX - YTZ

PDXYTZ

Portland

Thu 27/8

11:02 p.m.-10:07 a.m.

1 stop8h 05m

Toronto Island

Mon 31/8

7:25 p.m.-9:29 a.m.

1 stop17h 04m

C$ 631

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/9

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

1 stop9h 00m

Toronto Island

Fri 18/9

8:40 p.m.-8:30 a.m.

1 stop14h 50m

C$ 705

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ontario from

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

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

In general, November 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$ 125. If you are unable to visit Region of Ontario during the month of November, 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$ 132.

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$ 553. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 1,115.

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$ 558 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$ 414 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?

You could potentially save up to 16% on your flight if you consider stops on a State of Washington to Region of Ontario flight.

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$ 449

Fastest flight time

4h 39m

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$ 449. The best round-trip flight deal from State of Washington to Region of Ontario found on momondo in the last 72 hours is C$ 767.
The fastest flight from State of Washington to Region of Ontario takes 4h 39m
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?

  • 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?

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
WestJetPriceFrom C$ 293Free CancellationRating
7.2
3,384 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 314Free CancellationRating
7.9
12,582 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom C$ 375Free CancellationRating
7.1
11,267 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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Find better results for your trip to Ontario

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