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Cheap flights from Toronto Region of Waterloo Intl Airport to Washington from C$ 234

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SEA
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Region of Waterloo Intl to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Region of Waterloo Intl to Washington
Explore the most affordable flight options available from Region of Waterloo Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 March 2026.

Mon 1/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Mon 8/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 14/3C$ 437
Mon 8/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Fri 12/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 16/3C$ 448
Mon 1/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Wed 3/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 16/3C$ 450
Sat 13/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Thu 18/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 18/3C$ 455
Thu 4/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Tue 23/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 17/3C$ 460
Mon 15/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Mon 22/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 15/3C$ 463
Thu 25/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Sat 4/77:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 14/3C$ 524
Tue 23/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Sun 28/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 14/3C$ 533
Tue 23/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Sat 27/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 15/3C$ 536
Mon 22/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Tue 30/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 16/3C$ 559
Sun 12/78:40 p.m.
YKF
-
SEA
1 stop27h 20m
WestJet
Sat 18/77:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 15/3C$ 591
Sat 11/78:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Sat 25/77:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 15/3C$ 599

Find flight deals from Region of Waterloo Intl to Washington

Keep the following information in mind while searching for Region of Waterloo Intl to Washington flight deals. Data was last updated 19 March 2026.

Round-trip from

C$ 437

One-way from

C$ 234

Popular in

June

Cheapest in

February

Average price

C$ 456
WestJet
  • WestJet
  • 1/6-8/6
  • 2 total stops
  • 37h 15m total
  • Toronto to Washington
Search Deals
WestJet
  • WestJet
  • 1/5
  • 1 total stop
  • 16h 00m total
  • Toronto to Washington
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Region of Waterloo Intl 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 629,999 searches. Data last updated 19 March 2026.
Use the filters below to find and compare flights from Toronto Region of Waterloo Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 8/6

8:40 p.m.-9:40 a.m.

1 stop16h 00m

Seattle/Tacoma Intl

Fri 12/6

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 448

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Tue 23/6

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sat 27/6

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 536

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 27/8

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sun 30/8

7:00 a.m.-7:50 p.m.

1 stop9h 50m

C$ 591

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 12/7

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sat 18/7

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 591

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 24/7

8:40 p.m.-9:40 a.m.

1 stop16h 00m

Seattle/Tacoma Intl

Sat 1/8

7:00 a.m.-7:50 p.m.

1 stop9h 50m

C$ 591

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 11/9

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Mon 21/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 602

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 21/8

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Tue 1/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 602

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 25/4

6:20 a.m.-2:31 p.m.

1 stop11h 11m

Seattle/Tacoma Intl

Sat 2/5

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 704

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 8/6

7:05 p.m.-6:45 p.m.

3 stops26h 40m

Seattle/Tacoma Intl

Fri 12/6

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 713

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Mon 20/7

8:40 p.m.-1:50 p.m.

1 stop20h 10m

Portland

Fri 31/7

2:30 p.m.-7:50 p.m.

1 stop26h 20m

C$ 725

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/3

Showing 1-10 of 37 resultsSorted by cheapest first
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Best time to book a flight from Region of Waterloo Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Region of Waterloo Intl 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 Toronto Region of Waterloo Intl Airport to Washington
No data available for this route at this time. Please check back soon.

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 19 March 2026.
See what other customers who have flown with WestJet from Toronto Region of Waterloo Intl Airport to Washington have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,297 reviews
Check prices

Overall

7.2

Entertainment

6.1

Boarding

7.4

Food

6.2

Comfort

7.0

Crew

7.9

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
WestJet
7.2
Good
3,297 reviews
WestJet
7.2
Good
3,297 reviews
Check prices

Overall

7.2

Entertainment

6.1

Boarding

7.4

Food

6.2

Comfort

7.0

Crew

7.9

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

Related info for your journey

Find useful and relevant information for your journey from Region of Waterloo Intl to Washington. 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 Toronto Region of Waterloo Intl Airport to State of Washington?

    Airlines like WestJet fly from Toronto Region of Waterloo Intl Airport to State of Washington in about 16h. The time it takes to get you to your destination can typically vary by up to . There are 3257 km between Toronto Region of Waterloo Intl Airport and State of Washington.

  • Can I find deals for flights from Region of Waterloo Intl to Washington that include hotel bookings?

    Yes. In addition to deals on Region of Waterloo Intl to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Region of Waterloo Intl to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Region of Waterloo Intl to Washington.

  • Can I find deals for business class flights from Region of Waterloo Intl to Washington?

    Yes. Cheapflights offers flight deals from Region of Waterloo Intl 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.

See more FAQs

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Alternative routes for Region of Waterloo Intl to Washington

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Top airline flying from Region of Waterloo Intl to Washington

Discover the top airline that operate flights from Region of Waterloo Intl 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 629,999 searches. Data last updated 19 March 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 126AverageC$ 290FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Region of Waterloo Intl to Washington?

Cheapflights makes it easy to find Region of Waterloo Intl to Washington flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Region of Waterloo Intl to Washington?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Region of Waterloo Intl to Washington for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Region of Waterloo Intl to Washington with no change fees?

Yes, we can. To see specific flights from Region of Waterloo Intl to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Region of Waterloo Intl to Washington become cheaper?

Yes, Cheapflights offers price alerts on Region of Waterloo Intl to Washington flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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