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Cheap flights from Toronto Region of Waterloo Intl Airport to the United States from C$ 172

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 25/6. Fares are subject to change and may not be available on all flights or dates of travel.
YKF — LAX
13 Apr — 20 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Region of Waterloo Intl to USA

Enter your travel dates to find the best prices.

Cheapest flights from Region of Waterloo Intl to USA
Explore the most affordable flight options available from Region of Waterloo Intl to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 March 2026.

Sat 6/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Sat 13/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 9/3C$ 404
Wed 29/48:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Tue 5/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 10/3C$ 405
Wed 27/58:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Mon 1/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 9/3C$ 408
Thu 9/46:20 a.m.
YKF
-
SFO
1 stop8h 50m
WestJet
Wed 15/41:00 p.m.
SFO
-
YKF
1 stop13h 29m
WestJet
Deal found 11/3C$ 413
Mon 1/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Wed 3/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 10/3C$ 413
Tue 7/46:20 a.m.
YKF
-
SEA
1 stop10h 59m
WestJet
Wed 8/43:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Deal found 12/3C$ 419
Wed 10/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Thu 18/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 9/3C$ 424
Sun 10/58:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Sat 16/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Deal found 12/3C$ 430
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$ 436
Sun 14/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Sat 20/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 11/3C$ 439
Sun 14/68:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Fri 19/67:00 a.m.
SEA
-
YKF
1 stop9h 50m
WestJet
Deal found 13/3C$ 445
Fri 8/58:40 p.m.
YKF
-
SFO
1 stop18h 20m
WestJet
Mon 11/56:00 a.m.
SFO
-
YKF
1 stop10h 50m
WestJet
Deal found 12/3C$ 453

Find flight deals from Region of Waterloo Intl to USA

Keep the following information in mind while searching for Region of Waterloo Intl to USA flight deals. Data was last updated 14 March 2026.

Round-trip from

C$ 404

One-way from

C$ 172

Popular in

December

Cheapest in

September

Average price

C$ 352

Good one-way deal

C$ 175 or less
WestJet
  • WestJet
  • 6/6-13/6
  • 2 total stops
  • 37h 15m total
  • Toronto to USA
Search Deals
Air Canada
  • Air Canada
  • 25/6
  • 1 total stop
  • 6h 53m total
  • Toronto to USA
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a one-way flight from Toronto Region of Waterloo Intl to USA.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Region of Waterloo Intl to USA 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 14 March 2026.
Use the filters below to find and compare flights from Toronto Region of Waterloo Intl Airport to the United States 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

Tue 7/4

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

1 stop10h 59m

Seattle/Tacoma Intl

Wed 8/4

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

1 stop11h 19m

C$ 419

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Wed 10/6

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

1 stop25h 05m

Seattle/Tacoma Intl

Thu 18/6

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

1 stop21h 15m

C$ 424

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 11/6

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

1 stop25h 05m

Seattle/Tacoma Intl

Sun 14/6

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

1 stop21h 15m

C$ 424

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 14/6

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

1 stop16h 00m

Seattle/Tacoma Intl

Sat 20/6

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

1 stop9h 50m

C$ 439
Quickest round-trip

TorontoOrlando

YKF - MCO

YKFMCO

Toronto Region of Waterloo Intl

Sat 18/7

11:10 a.m.-7:32 p.m.

1 stop8h 22m

Orlando

Sat 25/7

8:30 p.m.-9:20 a.m.

1 stop12h 50m

C$ 483

TorontoPhoenix

YKF - PHX

YKFPHX

Toronto Region of Waterloo Intl

Mon 15/6

8:40 p.m.-12:10 p.m.

1 stop18h 30m

Phoenix Sky Harbor Intl

Fri 19/6

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 521

TorontoPhoenix

YKF - PHX

YKFPHX

Toronto Region of Waterloo Intl

Wed 12/8

8:40 p.m.-12:10 p.m.

1 stop18h 30m

Phoenix Sky Harbor Intl

Mon 17/8

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 532

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Fri 22/5

8:40 p.m.-9:55 p.m.

1 stop28h 15m

San Francisco

Wed 27/5

6:00 a.m.-7:50 p.m.

1 stop10h 50m

C$ 539

TorontoPhoenix

YKF - PHX

YKFPHX

Toronto Region of Waterloo Intl

Tue 16/6

8:40 p.m.-12:10 p.m.

1 stop18h 30m

Phoenix Sky Harbor Intl

Sun 21/6

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 547

TorontoPhoenix

YKF - PHX

YKFPHX

Toronto Region of Waterloo Intl

Fri 1/5

8:40 p.m.-9:35 p.m.

1 stop27h 55m

Phoenix Sky Harbor Intl

Fri 8/5

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 553

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Region of Waterloo Intl to USA

Have a flexible travel schedule? Discover the best time to fly to USA 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 the United States

What is the cheapest month to book a flight from Toronto Region of Waterloo Intl Airport to USA?

Currently, April is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to USA (average of C$ 89). Flying from Toronto Region of Waterloo Intl Airport to USA in September is currently the most expensive (average of C$ 265). 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 YKF to US?

Find hourly flight availability from Region of Waterloo Intl to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 March 2026.

One of the essential ways to save on airfare from Toronto Region of Waterloo Intl Airport to USA is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 60% on airfare.

How often are flights from Toronto to the United States delayed?

About 31% of weekly flights between Toronto and United States have experienced delays in the past year, with the average delay time being 129 minutes.

What is the most punctual flight time for Toronto to the United States flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Toronto to the United States flights?

Over the past year, Flair Airlines has had the lowest number of delays on this route, with just 31% of flights being delayed.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated 14 March 2026.
Check out reviews from past customers who have flown with WestJet,Air Canada, andFlair Airlines from Toronto Region of Waterloo Intl Airport to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,295 reviews
Check prices

Boarding

7.4

Crew

7.9

Entertainment

6.1

Food

6.2

Comfort

7.0

Overall

7.2

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
3,295 reviews
WestJet
7.2
Good
3,295 reviews
Check prices

Boarding

7.4

Crew

7.9

Entertainment

6.1

Food

6.2

Comfort

7.0

Overall

7.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
Air Canada
7.1
Good
10,800 reviews
WestJet
7.2
Good
3,295 reviews
Check prices

Boarding

7.4

Crew

7.9

Entertainment

6.1

Food

6.2

Comfort

7.0

Overall

7.2

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
Flair Airlines
6.0
Okay
265 reviews
WestJet
7.2
Good
3,295 reviews
Check prices

Boarding

7.4

Crew

7.9

Entertainment

6.1

Food

6.2

Comfort

7.0

Overall

7.2

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 USA. 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 USA?

    Airlines like WestJet and Air Canada fly from Toronto Region of Waterloo Intl Airport to USA in about 8h 22m. The time it takes to get you to your destination can typically vary by up to 2h 37m. The distance from Toronto Region of Waterloo Intl Airport to USA is about 1672 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Toronto Region of Waterloo Intl Airport to USA?

    Most travellers choose Toronto Region of Waterloo Intl - San Francisco, Toronto Region of Waterloo Intl - Los Angeles Los Angeles or Toronto Region of Waterloo Intl - Seattle/Tacoma Intl when deciding on the best route from Toronto Region of Waterloo Intl Airport to USA.

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

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

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

    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 USA.

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

    Yes. Cheapflights offers flight deals from Region of Waterloo Intl to USA 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 Toronto Region of Waterloo Intl Airport to USA?

    Currently, April is the cheapest month in which you can book a flight from Toronto Region of Waterloo Intl Airport to USA (average of C$ 89). Flying from Toronto Region of Waterloo Intl Airport to USA in September is currently the most expensive (average of C$ 265). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Region of Waterloo Intl to USA

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Region of Waterloo Intl to USA

Discover the top 3 airlines that operate flights from Region of Waterloo Intl to USA. 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 14 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 141AverageC$ 396FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 156AverageC$ 328FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Flair AirlinesCheapestC$ 166AverageC$ 307FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines 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 Region of Waterloo Intl to USA?

Cheapflights makes it easy to find Region of Waterloo Intl to USA 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 USA?

Millions of users choose and trust Cheapflights to book the best flight deals from Region of Waterloo Intl to USA for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Region of Waterloo Intl to USA, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Region of Waterloo Intl to USA 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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