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Cheap flights from Washington to Toronto Region of Waterloo Intl Airport from C$ 219

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YKF
2 Dec — 9 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 2 November 2025.

Round-trip from

C$ 370

One-way from

C$ 219

Popular in

June

Cheapest in

January

Average price

C$ 445
WestJet
  • WestJet
  • 23/3-31/3
  • 2 total stops
  • 22h 18m total
  • Washington to Toronto
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9/12
  • 9/12
  • 2 total stops
  • 27h 23m total
  • Washington to Toronto
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Find 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 2 November 2025.

Wed 26/119:32 a.m.SEA - YKF
2 stops16h 56mMultiple Airlines
Sun 30/117:05 a.m.YKF - SEA
2 stops30h 17mMultiple Airlines
Deal found 2/11C$ 660
Fri 14/1111:55 a.m.SEA - YKF
2 stops25h 05mMultiple Airlines
Sun 16/117:05 a.m.YKF - SEA
1 stop10h 15mMultiple Airlines
Deal found 1/11C$ 691
Fri 5/1211:55 a.m.SEA - YKF
2 stops14h 33mWestJet
Thu 11/126:20 a.m.YKF - SEA
2 stops31h 02mWestJet
Deal found 30/10C$ 748
Wed 26/111:30 p.m.SEA - YKF
2 stops12h 58mWestJet
Sat 29/116:20 a.m.YKF - SEA
3 stops31h 02mWestJet
Deal found 1/11C$ 787
Fri 5/1211:55 a.m.SEA - YKF
2 stops14h 33mWestJet
Tue 16/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 30/10C$ 820
Wed 26/113:46 p.m.SEA - YKF
2 stops10h 42mMultiple Airlines
Sat 29/116:20 a.m.YKF - SEA
2 stops11h 36mMultiple Airlines
Deal found 1/11C$ 838
Sat 6/1211:55 a.m.SEA - YKF
2 stops38h 33mWestJet
Thu 11/126:20 a.m.YKF - SEA
2 stops31h 02mWestJet
Deal found 30/10C$ 856
Fri 14/113:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Mon 17/116:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 31/10C$ 877
Wed 10/123:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Tue 16/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 30/10C$ 891

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 2 November 2025.
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

Washington

Fly to

Region of Waterloo Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 25/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Tue 31/3

6:20 a.m.-2:19 p.m.

1 stop10h 59m

C$ 370

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 8/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 14/3

7:00 p.m.-2:19 p.m.

1 stop22h 19m

C$ 388

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 22/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 30/3

6:20 a.m.-2:19 p.m.

1 stop10h 59m

C$ 424

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 20/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Tue 31/3

6:20 a.m.-2:19 p.m.

1 stop10h 59m

C$ 424

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 20/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 30/3

6:20 a.m.-2:19 p.m.

1 stop10h 59m

C$ 424

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 2/3

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Thu 5/3

7:05 a.m.-2:19 p.m.

1 stop10h 14m

C$ 478

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 15/2

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

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 21/2

7:00 p.m.-10:21 a.m.

3 stops18h 21m

C$ 542

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 11/1

3:10 p.m.-5:28 a.m.

1 stop11h 18m

Toronto Region of Waterloo Intl

Sat 17/1

7:00 p.m.-2:20 p.m.

1 stop22h 20m

C$ 600

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 26/11

9:32 a.m.-5:28 a.m.

2 stops16h 56m

Toronto Region of Waterloo Intl

Sun 30/11

7:05 a.m.-10:22 a.m.

2 stops30h 17m

C$ 660

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 14/11

11:55 a.m.-4:00 p.m.

2 stops25h 05m

Toronto Region of Waterloo Intl

Sun 16/11

7:05 a.m.-2:20 p.m.

1 stop10h 15m

C$ 691

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 19 results
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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 11h 19m. 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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Dallas/Fort Worth to Toronto Island flights

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