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Dulles Intl

$127+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — IAD
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Find cheap flights from Toronto to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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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 Friday or Wednesday and return on a Friday

Cheap 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 March 12, 2026.

This Super.com deal was found by Cheapflights users on 3/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 4/126:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/8$210
This FlightHub deal was found by Cheapflights users on 3/7. 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.
Fri 5/19:15 am
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Wed 5/64:05 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/7$217
This Super.com deal was found by Cheapflights users on 3/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/273:45 pm
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 4/511:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/8$218
This FlightHub deal was found by Cheapflights users on 3/9. 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.
Thu 5/141:50 pm
YTZ
-
IAD
Nonstop1h 31m
Porter Airlines
Sat 5/1611:30 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/9$219
This Trip.com deal was found by Cheapflights users on 3/7. 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.
Mon 4/63:45 pm
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Mon 4/1311:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/7$221
This FlightHub deal was found by Cheapflights users on 3/7. 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.
Fri 4/103:45 pm
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 4/126:00 pm
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/7$222
This Trip.com deal was found by Cheapflights users on 3/10. 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 4/29:25 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Sun 4/511:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/10$224
This Trip.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/1811:30 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Tue 4/2111:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/10$225
This FlightHub deal was found by Cheapflights users on 3/7. 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.
Sat 4/1111:30 am
YTZ
-
IAD
Nonstop1h 29m
Porter Airlines
Tue 4/1411:40 am
IAD
-
YTZ
Nonstop1h 30m
Porter Airlines
Deal found 3/7$226
This Mytrip deal was found by Cheapflights users on 3/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:00 pm
YYZ
-
IAD
1 stop4h 40m
Air Canada
Tue 4/284:30 pm
IAD
-
YYZ
Nonstop1h 27m
Air Canada
Deal found 3/7$246
This Air Canada deal was found by Cheapflights users on 3/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:55 pm
YYZ
-
IAD
Nonstop1h 34m
Air Canada
Tue 5/269:55 am
IAD
-
YYZ
Nonstop1h 27m
Air Canada
Deal found 3/9$249
This Trip.com deal was found by Cheapflights users on 3/10. 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.
Fri 4/246:55 pm
YYZ
-
IAD
Nonstop1h 34m
Air Canada
Fri 5/13:45 pm
IAD
-
YYZ
1 stop7h 13m
Air Canada
Deal found 3/10$253

Find 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(Super.com)

One-way from

$127
(Super.com)

Popular in

March

Cheapest in

July

Average price

$303

Good round-trip deal

$121 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Toronto (YTO)-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Washington, D.C. Dulles Intl flights.
Search Deals
From Toronto (YTO) to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Toronto (YTO) to Washington, D.C. Dulles Intl.
Search Deals

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 March 12, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Wed 3/25

8:55 am-10:24 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Thu 4/16

11:40 am-1:10 pm

Nonstop1h 30m

$239

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 3/28

10:00 am-11:46 am

Nonstop1h 46m

Washington, D.C. Dulles Intl

Sun 4/12

5:17 pm-7:02 pm

Nonstop1h 45m

$266

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 4/9

9:25 am-10:54 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 4/11

1:45 pm-3:15 pm

Nonstop1h 30m

$266

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 5/1

12:45 pm-2:24 pm

Nonstop1h 39m

Washington, D.C. Dulles Intl

Wed 5/6

8:19 am-10:04 am

Nonstop1h 45m

$266

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Thu 4/16

9:25 am-10:54 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 4/20

11:40 am-1:10 pm

Nonstop1h 30m

$268

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Sat 3/28

11:00 am-12:29 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Mon 4/13

11:40 am-1:10 pm

Nonstop1h 30m

$274

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 4/22

7:00 pm-11:25 pm

1 stop4h 25m

Washington, D.C. Dulles Intl

Thu 4/30

8:19 am-10:04 am

Nonstop1h 45m

$281

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 4/3

7:00 pm-11:25 pm

1 stop4h 25m

Washington, D.C. Dulles Intl

Mon 4/6

10:14 pm-11:54 pm

Nonstop1h 40m

$281

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 4/14

7:00 pm-11:25 pm

1 stop4h 25m

Washington, D.C. Dulles Intl

Sun 4/19

8:20 am-10:04 am

Nonstop1h 44m

$283

TorontoWashington, D.C.

YTZ - IAD

YTZIAD

Toronto Island

Mon 5/4

10:45 am-3:03 pm

1 stop4h 18m

Washington, D.C. Dulles Intl

Sun 5/10

9:45 am-2:22 pm

1 stop4h 37m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 42 resultsSorted by cheapest first
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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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice 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 March 6, 2026.

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, May is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $134). Flying from Toronto to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $212). 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 March 12, 2026.

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 afternoon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight at noon.

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 February 21, 2026.

Travelers seeking maximum savings on their Toronto to Washington, D.C. Dulles Intl Airport flight should consider departing on Sunday evenings 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 March 12, 2026.

The most flights from YTO to IAD are scheduled on a Monday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from Toronto to Washington, D.C. Dulles Intl Airport?

How often are flights from Toronto to Washington, D.C. delayed?

About 14% of weekly flights between Toronto and Washington, D.C. have experienced delays in the past year, with the average delay time being 121 minutes.

What is the most punctual flight time for Toronto to Washington, D.C. flights?

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

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

Monday tends to have the lowest number of delays on this route, whereas Sunday 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 Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Toronto to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

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

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 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

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 March 12, 2026.
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.
Porter Airlines
8.0
Very good
423 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
423 reviews
Porter Airlines
8.0
Very good
423 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,800 reviews
Porter Airlines
8.0
Very good
423 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.0

Crew

8.6

Boarding

8.2

Food

7.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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. This flight may include one or multiple stops.

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

    Currently priced at $146, United Airlines will fly you from Toronto to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Porter Airlines - these airlines can fly you to your destination from $171 and $188, respectively. United Airlines is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Toronto to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $89. Users have also found prices from $117 and $133 on Air Canada and United Airlines, respectively.

  • 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 Copa Airlines (74%), Republic Airways (74%) or Avianca (73%) 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 $442, our data shows the cheapest flight currently is $142. When looking at the most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), you can expect to pay $258 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, May is the cheapest month in which you can book a flight from Toronto to Washington, D.C. Dulles Intl Airport (average of $134). Flying from Toronto to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $212). 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
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

Browse thousands of different options on Cheapflights for your next trip

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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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$146Average$259FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$171Average$301FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$188Average$276FlexibilityNo cancel feeOn-time52%

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