Dulles Intl

$125+ Cheap flights from Toronto (YTO) to Dulles Intl (IAD)

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — IAD
Nov 13 — Nov 201
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Find cheap flights from Toronto to Dulles Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Toronto to Washington, D.C. Dulles Intl are usually found in July or June, booked 35 days in advance, depart on a Saturday or Wednesday and return on a Friday

Find flight deals from Toronto to Dulles Intl

Cheapest flights from Toronto to Dulles Intl
Explore the most affordable flight options available from Toronto to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This SmartFares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/1611:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/13$200
This SmartFares deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Fri 12/56:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/14$205
This SmartFares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Tue 11/116:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/13$206
This Trip.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/166:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/14$207
This Trip.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Sun 11/166:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/12$208
This SmartFares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Thu 11/206:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/12$210
This SmartFares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Mon 11/36:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/12$213
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Sat 11/221:45 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/13$214
This FlightHub deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:45 pmYTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 11/196:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/14$215
This SmartFares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Fri 10/3111:40 amIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/12$216
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:40 pmYYZ - IAD
Nonstop1h 40mUnited Airlines
Sun 11/910:11 pmIAD - YYZ
Nonstop1h 35mUnited Airlines
Deal found 10/13$216
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:55 amYTZ - IAD
Nonstop1h 29mPorter Airlines
Wed 11/196:30 pmIAD - YTZ
Nonstop1h 30mPorter Airlines
Deal found 10/13$217

Cheap flight deals from Toronto to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(SmartFares)

One-way from

$125
(Kiwi.com)

Popular in

October

Cheapest in

July

Average price

$430

Good round-trip deal

$192 or less

Good one-way deal

$140 or less
Provider with most accurate pricing for Toronto (YTO)-Washington, D.C. Dulles Intl flight deals.
Provider most trusted by Cheapflights users for Toronto (YTO)-Washington, D.C. Dulles Intl flights.
From Toronto (YTO) to Washington, D.C. Dulles Intl
One-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 21% potential increase in price ($69 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Toronto to Dulles 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 2,558,603 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Toronto to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Toronto

Fly to

Dulles Intl

Route

Depart

Return

Price

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 11/18

3:45 pm-5:14 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Fri 11/21

11:40 am-1:10 pm

Nonstop1h 30m

$205

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 11/22

11:00 am-12:29 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 pm-8:00 pm

Nonstop1h 30m

$205

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Fri 10/31

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 11/8

1:45 pm-3:15 pm

Nonstop1h 30m

$213

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Tue 11/18

3:45 pm-5:14 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 11/22

1:45 pm-3:15 pm

Nonstop1h 30m

$215

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 11/18

7:40 pm-9:20 pm

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sat 11/22

12:35 pm-2:14 pm

Nonstop1h 39m

$216

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 11/8

7:40 pm-9:20 pm

Nonstop1h 40m

Washington, D.C. Dulles Intl

Tue 11/11

10:11 pm-11:46 pm

Nonstop1h 35m

$216

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sun 11/23

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 pm-8:00 pm

Nonstop1h 30m

$220

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 11/12

7:40 pm-9:20 pm

Nonstop1h 40m

Washington, D.C. Dulles Intl

Thu 11/13

8:45 am-1:43 pm

1 stop4h 58m

$226

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 11/6

2:45 pm-4:27 pm

Nonstop1h 42m

Washington, D.C. Dulles Intl

Sun 11/16

6:00 am-11:48 am

1 stop5h 48m

$226

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 11/6

2:45 pm-4:27 pm

Nonstop1h 42m

Washington, D.C. Dulles Intl

Tue 11/11

9:45 am-3:34 pm

1 stop5h 49m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 44 results
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Compare providers for flights from Toronto to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Toronto to Dulles Intl in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Toronto-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Toronto-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Toronto-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Toronto-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Toronto to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Toronto 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 to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to Dulles Intl. Price data was last updated on October 10, 2025.

To ensure you get the cheapest price possible for a flight from Toronto to Washington, D.C. Dulles Intl Airport, you should look to book at least 35 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Toronto to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $132). Flying from Toronto to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $187). 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 YTO to IAD?

Find hourly flight availability from Toronto to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Toronto to Washington, D.C. Dulles Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Toronto to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Toronto to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Toronto to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 14, 2025.

The most flights from YTO to IAD are scheduled on a Monday (22 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).

The best insider tips for Toronto to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Toronto to Washington, D.C. Dulles Intl Airport trip
Airlines
United Airlines

Economy Plus provides extra legroom and priority boarding, enhancing comfort and convenience.


United Club access includes healthy snacks and comfortable seating, ideal for business travelers.

Air Canada

Economy Latitude offers priority check-in and two checked bags, ideal for efficient travel.


Preferred Seats offer up to four inches extra space, perfect for added comfort on short flights.

Read more about Air Canadaby Jessica Macdonald
Airports
YYZ

Security lines at YYZ are efficient, moving quickly even during peak times. Arrive early to clear US customs before boarding.

Read more about YYZby Kaitlyn McInnis
YTZ

YTZ offers fast security with rarely long lines. Arrive with time to spare but expect a quick process.

Read more about YTZby Kaitlyn McInnis
IAD

From IAD, the Silver Line Metro reaches downtown in under 40 minutes, offering a cheap and convenient travel option.

Read more about IADby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ and YTZ

Kaitlyn McInnis

Kaitlyn McInnis

Kaitlyn is a guidebook author and travel writer splitting her time between Atlantic Canada and Istanbul, Türkiye. She has visited over fifty countries and all seven continents, so she is very familiar with many hotels, airports and airlines around the globe. But her favorite type of vacation is sunbathing by the sea with a good book in hand.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated October 14, 2025.
Get a feel of what it's like to fly with Porter Airlines and Air Canada from Toronto to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Toronto to Dulles 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 Toronto to Washington, D.C. Dulles Intl Airport?

    Departing from Toronto to Washington, D.C. Dulles Intl Airport will take you 1h 29m. The distance between Toronto and Washington, D.C. Dulles Intl Airport is about 339 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Toronto to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $171, Air Canada will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Porter Airlines and United Airlines - these airlines can fly you to your destination from $174 and $184, respectively. Air Canada is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Toronto to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Toronto to Washington, D.C. Dulles Intl Airport consider choosing Republic Airways (94%), Avianca (91%) or Copa Airlines (91%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Toronto to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Toronto to Washington, D.C. Dulles Intl Airport is generally $677, our data shows the cheapest flight currently is $135. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $216 for that flight.

  • Can I find deals for flights from Toronto to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Toronto to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Toronto to Dulles Intl?

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

  • Can I find deals for business class flights from Toronto to Dulles Intl?

    Yes. Cheapflights offers flight deals from Toronto to Dulles 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 Toronto to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $132). Flying from Toronto to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $187). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Arlington
Tysons
Springfield
Silver Spring
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf

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Top 3 airlines flying from Toronto to Dulles Intl

Discover the top 3 airlines that operate flights from Toronto to Dulles Intl. 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 2,558,603 searches. Data last updated October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$171Average$290FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$174Average$275FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$184Average$314FlexibilityNo cancel feeOn-time69%

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