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Cheap flights from the United States to Toronto Region of Waterloo Intl Airport from C$ 124

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YKF
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap flight deals from USA to Region of Waterloo Intl

Keep the following information in mind while searching for USA to Region of Waterloo Intl flight deals. Data was last updated 15 September 2025.

Round-trip from

C$ 332

One-way from

C$ 124

Popular in

September

Cheapest in

January

Average price

C$ 380
WestJet
  • WestJet
  • 1/10-6/10
  • 3 total stops
  • 21h 09m total
  • USA to Toronto
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5/12
  • 5/12
  • 2 total stops
  • 15h 38m total
  • USA to Toronto
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from USA to Region of Waterloo Intl

Cheapest flights from USA to Region of Waterloo Intl
Explore the most affordable flight options available from USA to Region of Waterloo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Wed 1/101:10 p.m.PHX - YKF
1 stop8h 35mWestJet
Mon 6/106:00 a.m.YKF - PHX
2 stops12h 34mWestJet
Deal found 14/9C$ 332
Fri 5/1210:50 a.m.LAX - YKF
2 stops15h 38mMultiple Airlines
Sun 7/127:05 a.m.YKF - LAX
1 stop12h 53mMultiple Airlines
Deal found 13/9C$ 333
Fri 24/101:50 p.m.SEA - YKF
1 stop7h 55mWestJet
Tue 28/106:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 14/9C$ 355
Thu 23/1012:50 p.m.SNA - YKF
1 stop8h 55mWestJet
Sat 25/106:00 a.m.YKF - SNA
1 stop9h 01mWestJet
Deal found 14/9C$ 366
Sun 19/108:40 a.m.SEA - YKF
1 stop13h 05mWestJet
Sat 1/116:20 a.m.YKF - SEA
1 stop11h 18mWestJet
Deal found 14/9C$ 366
Thu 9/1011:40 a.m.LAX - YKF
1 stop10h 05mWestJet
Mon 13/106:00 a.m.YKF - LAX
1 stop18h 46mWestJet
Deal found 13/9C$ 373
Sun 12/1012:50 p.m.SFO - YKF
1 stop8h 55mWestJet
Fri 17/106:00 a.m.YKF - SFO
1 stop8h 54mWestJet
Deal found 13/9C$ 376
Thu 16/1010:15 a.m.SFO - YKF
2 stops11h 30mMultiple Airlines
Sun 19/106:15 a.m.YKF - SFO
2 stops18h 09mMultiple Airlines
Deal found 13/9C$ 380
Sun 9/113:10 p.m.SEA - YKF
1 stop11h 18mWestJet
Thu 13/116:20 a.m.YKF - SEA
1 stop11h 00mWestJet
Deal found 15/9C$ 381
Thu 23/1010:15 a.m.SFO - YKF
2 stops11h 30mMultiple Airlines
Thu 30/106:20 a.m.YKF - SFO
3 stops17h 15mMultiple Airlines
Deal found 12/9C$ 388
Wed 3/125:45 p.m.LAX - YKF
1 stop8h 43mWestJet
Sat 6/126:20 a.m.YKF - LAX
1 stop13h 38mWestJet
Deal found 14/9C$ 391
Thu 23/1011:40 a.m.LAX - YKF
1 stop10h 05mWestJet
Mon 27/106:20 a.m.YKF - LAX
1 stop13h 38mWestJet
Deal found 15/9C$ 399

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA 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 15 September 2025.
Use the filters below to find and compare flights from the United States to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

USA

Fly to

Region of Waterloo Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 24/10

1:50 p.m.-12:45 a.m.

1 stop7h 55m

Toronto Region of Waterloo Intl

Tue 28/10

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

1 stop11h 00m

C$ 355

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 6/3

1:00 p.m.-5:29 a.m.

1 stop13h 29m

Toronto Region of Waterloo Intl

Thu 12/3

6:20 a.m.-12:10 p.m.

1 stop8h 50m

C$ 372

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Thu 16/10

10:15 a.m.-12:45 a.m.

2 stops11h 30m

Toronto Region of Waterloo Intl

Sun 19/10

6:15 a.m.-9:24 p.m.

2 stops18h 09m

C$ 380

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 9/11

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

1 stop11h 18m

Toronto Region of Waterloo Intl

Thu 13/11

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

1 stop11h 00m

C$ 381

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Wed 3/12

5:45 p.m.-5:28 a.m.

1 stop8h 43m

Toronto Region of Waterloo Intl

Sat 6/12

6:20 a.m.-4:58 p.m.

1 stop13h 38m

C$ 391

Los AngelesToronto

LAX - YKF

LAXYKF

Los Angeles

Thu 23/10

11:40 a.m.-12:45 a.m.

1 stop10h 05m

Toronto Region of Waterloo Intl

Mon 27/10

6:20 a.m.-4:58 p.m.

1 stop13h 38m

C$ 399

PhoenixToronto

PHX - YKF

PHXYKF

Phoenix Sky Harbor Intl

Wed 8/10

6:05 p.m.-12:45 a.m.

1 stop27h 40m

Toronto Region of Waterloo Intl

Mon 13/10

6:00 a.m.-12:22 p.m.

1 stop9h 22m

C$ 402

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Sat 11/10

7:30 a.m.-5:30 a.m.

2 stops19h 00m

Toronto Region of Waterloo Intl

Sun 19/10

6:15 a.m.-9:24 p.m.

2 stops18h 09m

C$ 403

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 9/11

11:55 a.m.-5:28 a.m.

2 stops14h 33m

Toronto Region of Waterloo Intl

Sat 15/11

6:20 a.m.-2:38 p.m.

1 stop11h 18m

C$ 406

PhoenixToronto

PHX - YKF

PHXYKF

Phoenix Sky Harbor Intl

Wed 1/10

1:10 p.m.-12:45 a.m.

1 stop8h 35m

Toronto Region of Waterloo Intl

Mon 6/10

6:00 a.m.-5:13 p.m.

1 stop14h 13m

C$ 413

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 60 results
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Best time to book a flight from USA to Region of Waterloo Intl

Have a flexible travel schedule? Discover the best time to fly to Region of Waterloo Intl from USA 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 the United States to Toronto Region of Waterloo Intl Airport

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

Find hourly flight availability from USA to Region of Waterloo Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to Toronto Region of Waterloo Intl Airport as you normally would.

Related info for your journey

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

    Airlines like WestJet fly from USA to Toronto Region of Waterloo Intl Airport in about 7h 55m. The time it takes to get you to your destination can typically vary by up to . The distance between USA and Toronto Region of Waterloo Intl Airport is about 3257 km.

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

    While some choose either Los Angeles - Toronto Region of Waterloo Intl or Seattle/Tacoma Intl - Toronto Region of Waterloo Intl, San Francisco - Toronto Region of Waterloo Intl is the most popular route from USA to Toronto Region of Waterloo Intl Airport.

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

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

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

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

    Yes. Cheapflights offers flight deals from USA 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.

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

    Currently, January is the cheapest month in which you can book a flight from USA to Toronto Region of Waterloo Intl Airport (average of C$ 114). Flying from USA to Toronto Region of Waterloo Intl Airport in December is currently the most expensive (average of C$ 246). 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

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 USA to Region of Waterloo Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Winnipeg to Toronto Island flights
Hobby to Pearson Intl flights
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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Region of Waterloo Intl from USA.

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

Yes, we can. To see specific flights from USA to Region of Waterloo Intl 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 USA to Region of Waterloo Intl become cheaper?

Yes, Cheapflights offers price alerts on USA 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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