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Cheap flights from Washington to Ontario from C$ 194

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 28/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
16 Jul — 23 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Ontario

Enter your travel dates to find the best prices.

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 16 June 2026.

Wed 19/82:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Wed 2/99:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 11/6C$ 421
Mon 20/77:45 p.m.
PDX
-
YYZ
1 stop9h 35m
Multiple Airlines
Wed 29/77:00 a.m.
YYZ
-
PDX
1 stop9h 50m
Multiple Airlines
Deal found 14/6C$ 425
Tue 21/72:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Tue 28/79:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 15/6C$ 428
Fri 2/102:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Sun 11/109:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 14/6C$ 429
Tue 18/82:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Fri 4/99:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 11/6C$ 430
Mon 20/77:45 p.m.
PDX
-
YYZ
2 stops9h 40m
Multiple Airlines
Tue 28/79:00 a.m.
YYZ
-
PDX
1 stop7h 50m
Multiple Airlines
Deal found 11/6C$ 432
Tue 11/82:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Mon 31/87:00 a.m.
YYZ
-
PDX
1 stop9h 50m
WestJet
Deal found 11/6C$ 439
Fri 18/92:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Mon 21/96:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 14/6C$ 446
Tue 28/72:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Thu 13/86:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 14/6C$ 449
Wed 2/92:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Fri 11/96:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 15/6C$ 450
Wed 29/72:30 p.m.
PDX
-
YYZ
1 stop7h 35m
Multiple Airlines
Wed 5/810:40 p.m.
YYZ
-
PDX
1 stop13h 51m
Multiple Airlines
Deal found 14/6C$ 460
Wed 14/1010:30 a.m.
SEA
-
YYZ
1 stop7h 45m
WestJet
Mon 19/101:30 p.m.
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 16/6C$ 499

Find flight deals from Washington to Ontario

Keep the following information in mind while searching for Washington to Ontario flight deals. Data was last updated 16 June 2026.

Round-trip from

C$ 421

One-way from

C$ 194

Popular in

July

Cheapest in

January

Average price

C$ 702

Good round-trip deal

C$ 754 or less

Good one-way deal

C$ 391 or less
WestJet
  • WestJet
  • 19/8-2/9
  • 2 total stops
  • 15h 25m total
  • Washington to Ontario
Search Deals
WestJet
  • WestJet
  • 28/7
  • 1 total stop
  • 7h 35m total
  • Washington to Ontario
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 215 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Washington to Ontario.
Search Deals
Price to beat on a one-way flight from Washington to Ontario.
Search Deals

Cheapflights Fare Finder

 
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 629,999 searches. Data last updated 16 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

Tue 22/9

8:05 a.m.-7:37 p.m.

1 stop8h 32m

Toronto Pearson Intl

Sat 26/9

7:55 a.m.-2:51 p.m.

2 stops9h 56m

C$ 527

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 14/8

3:43 p.m.-3:16 p.m.

2 stops20h 33m

Toronto Pearson Intl

Tue 18/8

7:30 a.m.-2:51 p.m.

1 stop10h 21m

C$ 533

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 11/11

11:39 a.m.-11:04 p.m.

1 stop8h 25m

Toronto Pearson Intl

Sat 14/11

7:45 a.m.-1:25 p.m.

1 stop8h 40m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 7/8

10:40 p.m.-9:54 a.m.

1 stop8h 14m

Toronto Pearson Intl

Wed 2/9

1:00 p.m.-10:52 p.m.

1 stop12h 52m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 7/8

6:45 a.m.-9:59 p.m.

1 stop12h 14m

Toronto Pearson Intl

Thu 13/8

6:15 a.m.-1:38 p.m.

1 stop10h 23m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/10

5:30 a.m.-4:14 p.m.

1 stop7h 44m

Toronto Pearson Intl

Tue 13/10

12:45 p.m.-8:10 p.m.

1 stop10h 25m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 17/9

7:10 a.m.-10:36 p.m.

1 stop12h 26m

Toronto Pearson Intl

Sun 20/9

8:00 p.m.-9:50 a.m.

1 stop16h 50m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 13/11

10:05 p.m.-1:09 p.m.

1 stop12h 04m

Toronto Pearson Intl

Sun 15/11

5:10 p.m.-11:47 p.m.

1 stop9h 37m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 9/9

2:27 p.m.-12:13 a.m.

1 stop6h 46m

Toronto Pearson Intl

Mon 14/9

2:45 p.m.-10:52 p.m.

1 stop11h 07m

C$ 534

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 8/8

11:40 p.m.-9:54 a.m.

1 stop7h 14m

Toronto Pearson Intl

Wed 2/9

10:45 a.m.-3:05 p.m.

1 stop7h 20m

C$ 534

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/6

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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.

Cheapflights Insights

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

What is the cheapest month to book a flight from State of Washington to Region of Ontario?

Currently, November is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of C$ 123). Flying from State of Washington to Region of Ontario in August is currently the most expensive (average of C$ 231). 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 16 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Region of Ontario as you normally would.

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 16 June 2026.

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 (2 on average).

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

How far ahead should I book a flight from State of Washington to Region of Ontario?

The best time to book flights from State of Washington to Region of Ontario is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 16 June 2026.
Get a feel of what it's like to fly with Alaska Airlines,WestJet, andAir Canada from Washington to Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,516 reviews
Check prices

Overall

7.9

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,516 reviews
Alaska Airlines
7.9
Good
12,516 reviews
Check prices

Overall

7.9

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
WestJet
7.2
Good
3,365 reviews
Alaska Airlines
7.9
Good
12,516 reviews
Check prices

Overall

7.9

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Air Canada
7.1
Good
11,197 reviews
Alaska Airlines
7.9
Good
12,516 reviews
Check prices

Overall

7.9

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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.

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

    There are many flights that can get you from State of Washington to Region of Ontario in 7h 15m. Fly via Delta, United Airlines, or WestJet to get the fastest option. Airlines will cover a distance of 3304 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Region of Ontario one-way?

    The cheapest airlines for a one-way flight from State of Washington to Region of Ontario are Alaska Airlines (C$ 115), Air Canada (C$ 134), and WestJet (C$ 141).

  • 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, November is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of C$ 123). Flying from State of Washington to Region of Ontario in August is currently the most expensive (average of C$ 231). 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

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Alternative routes for Washington to Ontario

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Top 3 airlines flying from Washington to Ontario

Discover the top 3 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 629,999 searches. Data last updated 16 June 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 288AverageC$ 407FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 309AverageC$ 793FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air CanadaCheapestC$ 369AverageC$ 462FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Washington today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Washington to Ontario?

Cheapflights simply makes it quick and affordable to book flights from Washington to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Washington to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Washington shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Washington to Ontario become cheaper?

Of course! You can now track prices for flights from Washington to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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