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Cheap flights from Washington to Toronto Region of Waterloo Intl Airport from C$ 255

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
19 Apr — 26 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Region of Waterloo Intl

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Region of Waterloo Intl
Explore the most affordable flight options available from Washington to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 March 2026.

Wed 22/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Mon 27/48:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 20/3C$ 495
Wed 22/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Wed 29/48:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 17/3C$ 498
Wed 8/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Wed 6/58:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 16/3C$ 501
Tue 12/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sun 17/58:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 19/3C$ 506
Thu 4/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sun 7/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 16/3C$ 509
Thu 4/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Mon 22/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 19/3C$ 517
Fri 12/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Fri 19/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 20/3C$ 527
Thu 18/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Mon 22/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 17/3C$ 528
Wed 17/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sun 21/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 19/3C$ 534

Find flight deals from Washington to Region of Waterloo Intl

Keep the following information in mind while searching for Washington to Region of Waterloo Intl flight deals. Data was last updated 20 March 2026.

Round-trip from

C$ 498

One-way from

C$ 255

Popular in

June

Cheapest in

January

Average price

C$ 549
WestJet
  • WestJet
  • 22/4-29/4
  • 2 total stops
  • 27h 19m total
  • Washington to Toronto
Search Deals
WestJet
  • WestJet
  • 1/6
  • 1 total stop
  • 21h 15m total
  • Washington to Toronto
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 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 Washington to Region of Waterloo Intl 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 20 March 2026.
Use the filters below to find and compare flights from Washington to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 12/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Fri 19/6

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

1 stop16h 00m

C$ 530

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 3/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 8/6

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

1 stop16h 00m

C$ 549

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 26/4

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Wed 29/4

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

1 stop16h 00m

C$ 565

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 5/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 7/6

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

1 stop16h 00m

C$ 571
Quickest round-trip

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 25/6

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

1 stop9h 50m

Toronto Region of Waterloo Intl

Sun 28/6

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

1 stop16h 00m

C$ 602

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 8/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Fri 12/6

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

1 stop16h 00m

C$ 611

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 12/6

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

1 stop21h 15m

Toronto Region of Waterloo Intl

Wed 17/6

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

1 stop25h 05m

C$ 623

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 22/4

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Sun 26/4

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

1 stop16h 00m

C$ 649

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 8/4

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Wed 6/5

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

3 stops26h 40m

C$ 679

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 5/9

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

1 stop9h 50m

Toronto Region of Waterloo Intl

Sat 12/9

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

1 stop16h 00m

C$ 822

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/3

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Washington to Region of Waterloo Intl

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

Related info for your journey

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

    Departing from State of Washington to Toronto Region of Waterloo Intl Airport will take you 21h 15m. The distance from State of Washington to Toronto Region of Waterloo Intl Airport is about 3257 km.

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

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

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

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

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

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

Travelling to a place near Toronto Region of Waterloo Intl Airport?

Book flights to Toronto Region of Waterloo Intl Airport if you plan to visit one of these locations
Southampton
Sauble Beach

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Alternative routes for Washington to Region of Waterloo Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Yes, Cheapflights offers price alerts on Washington to Region of Waterloo Intl 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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