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Cheap flights from Toronto Region of Waterloo Intl Airport to Washington from C$ 240

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 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — SEA
17 Jan — 24 Jan1
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 18 December 2025.

Mon 22/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Wed 31/123:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 16/12C$ 1,113
Mon 22/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Mon 29/123:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 17/12C$ 1,285
Mon 29/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Sun 11/13:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 16/12C$ 1,323
Fri 26/126:25 a.m.YKF - SEA
1 stop10h 55mWestJet
Mon 29/123:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 16/12C$ 1,419
Tue 16/126:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Sun 21/123:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 15/12C$ 1,535
Sat 20/127:00 p.m.YKF - SEA
1 stop22h 20mWestJet
Sun 4/13:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Deal found 16/12C$ 1,812

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 18 December 2025.

Round-trip from

C$ 316

One-way from

C$ 240

Popular in

December

Cheapest in

February

Average price

C$ 619
WestJet
  • WestJet
  • 1/5-7/5
  • 2 total stops
  • 32h 08m total
  • Toronto to Washington
Search Deals
30/1
  • 30/1
  • 1 total stop
  • 15h 47m total
  • Toronto to Washington
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 2025.
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

Region of Waterloo Intl

Fly to

Washington

Route

Depart

Return

Price

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 5/3

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

1 stop10h 59m

Seattle/Tacoma Intl

Sun 8/3

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

1 stop11h 19m

C$ 320

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 9/3

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

1 stop10h 59m

Seattle/Tacoma Intl

Sun 15/3

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

1 stop11h 19m

C$ 320

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 22/1

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

1 stop11h 00m

Seattle/Tacoma Intl

Sun 25/1

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

1 stop11h 18m

C$ 329

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 7/3

7:00 p.m.-1:19 p.m.

1 stop21h 19m

Seattle/Tacoma Intl

Wed 11/3

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

1 stop11h 19m

C$ 408

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Mon 11/5

6:00 a.m.-1:20 p.m.

1 stop10h 20m

Portland

Sun 31/5

2:00 p.m.-12:45 a.m.

1 stop7h 45m

C$ 551

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 22/1

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

1 stop11h 00m

Seattle/Tacoma Intl

Wed 4/2

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

1 stop11h 19m

C$ 591

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 16/3

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

1 stop10h 59m

Seattle/Tacoma Intl

Mon 23/3

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

1 stop11h 19m

C$ 614

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sat 17/1

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

1 stop22h 20m

Seattle/Tacoma Intl

Wed 21/1

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

1 stop11h 18m

C$ 701

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 5/2

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

1 stop10h 59m

Seattle/Tacoma Intl

Sun 8/2

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

1 stop11h 19m

C$ 701

TorontoPortland

YKF - PDX

YKFPDX

Toronto Region of Waterloo Intl

Tue 3/3

6:20 a.m.-6:48 p.m.

2 stops15h 28m

Portland

Wed 4/3

1:27 p.m.-5:29 a.m.

2 stops13h 02m

C$ 1,054

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/12

Showing 1-10 of 23 results
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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

What is the cheapest time of day to fly from YKF to WA?

Find hourly flight availability from Region of Waterloo Intl to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2025.

It’s optimal to fly from Toronto Region of Waterloo Intl Airport to State of Washington in the afternoon. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight at noon.

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 18 December 2025.
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
3,204 reviews
Check prices

Crew

7.9

Food

6.2

Overall

7.2

Comfort

7.1

Boarding

7.4

Entertainment

6.1

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
3,204 reviews
WestJet
7.2
Good
3,204 reviews
Check prices

Crew

7.9

Food

6.2

Overall

7.2

Comfort

7.1

Boarding

7.4

Entertainment

6.1

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 10h 59m. 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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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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 182AverageC$ 305FlexibilityNo 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?

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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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