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$161+ Cheap flights from Dulles Intl (IAD) to Montreal (YMQ)

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YMQ
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Montreal are usually found in March or February, booked 50 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Dulles Intl to Montreal

Cheapest flights from Dulles Intl to Montreal
Explore the most affordable flight options available from Dulles Intl to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/103:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Tue 8/186:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/19$321
This Mytrip deal was found by Cheapflights users on 7/22. 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 9/83:50 pm
IAD
-
YUL
1 stop5h 22m
Porter Airlines
Mon 9/289:00 am
YUL
-
IAD
1 stop6h 10m
Porter Airlines
Deal found 7/22$322
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Thu 10/153:50 pm
IAD
-
YUL
1 stop5h 22m
Porter Airlines
Sun 10/1810:35 am
YUL
-
IAD
1 stop4h 35m
Porter Airlines
Deal found 7/19$323
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Tue 8/113:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Thu 8/206:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/22$324
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/193:50 pm
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Wed 8/266:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/20$325
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/243:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Fri 8/286:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/21$326
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/53:50 pm
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Wed 8/126:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/21$327
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/53:50 pm
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Tue 8/116:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/22$328
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Tue 9/2911:25 am
IAD
-
YUL
1 stop6h 47m
Porter Airlines
Mon 10/59:00 am
YUL
-
IAD
1 stop6h 10m
Porter Airlines
Deal found 7/18$329
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Sat 10/311:25 am
IAD
-
YUL
1 stop6h 47m
Porter Airlines
Mon 10/59:00 am
YUL
-
IAD
1 stop6h 10m
Porter Airlines
Deal found 7/18$330
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sun 10/43:50 pm
IAD
-
YUL
1 stop5h 22m
Porter Airlines
Thu 10/86:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/22$331
This Trip.com deal was found by Cheapflights users on 7/18. 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 8/173:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Tue 9/86:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 7/18$332

Find flight deals from Dulles Intl to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Montreal (YMQ). 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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$321
(Kiwi.com)

One-way from

$161
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$403

Good round-trip deal

$482 or less

Good one-way deal

$280 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Montreal (YMQ) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Montreal (YMQ) flights.
Search Deals
From Washington, D.C. Dulles Intl to Montreal (YMQ)
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Montreal (YMQ)
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Montreal (YMQ).
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Montreal (YMQ).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Montreal 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 July 23, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 8/18

5:40 pm-7:45 pm

Nonstop2h 05m

Montreal Pierre Elliott Trudeau Intl

Sat 8/29

9:15 am-11:13 am

Nonstop1h 58m

$417

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 9/15

5:40 pm-7:45 pm

Nonstop2h 05m

Montreal Pierre Elliott Trudeau Intl

Thu 9/17

5:05 pm-7:00 pm

Nonstop1h 55m

$417

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 9/8

5:40 pm-7:45 pm

Nonstop2h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 9/16

2:20 pm-4:18 pm

Nonstop1h 58m

$417

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 9/23

12:43 pm-2:40 pm

Nonstop1h 57m

Montreal Pierre Elliott Trudeau Intl

Sun 9/27

10:30 am-4:38 pm

1 stop6h 08m

$423

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 9/14

5:45 pm-10:06 pm

1 stop4h 21m

Montreal Pierre Elliott Trudeau Intl

Thu 9/24

2:20 pm-4:18 pm

Nonstop1h 58m

$427
Quickest round-trip

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 9/17

12:43 pm-2:40 pm

Nonstop1h 57m

Montreal Pierre Elliott Trudeau Intl

Sun 9/20

9:15 am-11:13 am

Nonstop1h 58m

$455

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 8/24

6:00 am-6:54 pm

2 stops12h 54m

Montreal Pierre Elliott Trudeau Intl

Wed 8/26

2:29 pm-11:26 pm

2 stops8h 57m

$458

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sat 8/15

5:40 pm-7:45 pm

Nonstop2h 05m

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

9:15 am-11:13 am

Nonstop1h 58m

$466

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 9/30

6:10 am-6:53 pm

2 stops12h 43m

Montreal Pierre Elliott Trudeau Intl

Mon 10/5

12:48 pm-12:41 am

2 stops11h 53m

$469

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 8/12

8:28 am-6:54 pm

2 stops10h 26m

Montreal Pierre Elliott Trudeau Intl

Mon 8/17

12:47 pm-12:34 am

2 stops11h 47m

$469

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Montreal flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Montreal flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Montreal flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Montreal 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 Washington, D.C. Dulles Intl Airport-Montreal 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 Dulles Intl to Montreal

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

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montreal (average of $288). Flying from Washington, D.C. Dulles Intl Airport to Montreal in December is currently the most expensive (average of $482). 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 IAD to YMQ?

Find hourly flight availability from Dulles Intl to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Montreal is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

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

Explore weekly flight availability from Dulles Intl to Montreal. 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 July 23, 2026.

The most flights from IAD to YMQ are scheduled on a Monday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

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

Airfare is typical for this route at the moment.
Washington, D.C. Dulles Intl Airport to Montreal flights typically cost between $299 and $493 in August.
The cheapest round-trip price found within the last 5 days was $321 on Porter Airlines (Aug 10-Aug 18).

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Montreal, you should look to book at least 61 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 day to fly from Washington, D.C. Dulles Intl Airport to Montreal?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Montreal. Price data was last updated on July 18, 2026.

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

Reviews of airlines servicing Montreal

Get insights into the airlines that provide service to Montreal. 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 Montreal. Reviews last updated July 23, 2026.
See what other customers who have flown with Porter Airlines,United Airlines, andAir Canada from Washington, D.C. Dulles Intl Airport to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
448 reviews

Entertainment

6.9

Boarding

8.2

Comfort

8.0

Food

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
448 reviews
Porter Airlines
8.0
Very good
448 reviews

Entertainment

6.9

Boarding

8.2

Comfort

8.0

Food

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,027 reviews
Porter Airlines
8.0
Very good
448 reviews

Entertainment

6.9

Boarding

8.2

Comfort

8.0

Food

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,375 reviews
Porter Airlines
8.0
Very good
448 reviews

Entertainment

6.9

Boarding

8.2

Comfort

8.0

Food

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

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

    Departing from Washington, D.C. Dulles Intl Airport to Montreal will take you 2h 05m. The distance from Washington, D.C. Dulles Intl Airport to Montreal is about 488 mi. All flights are typically nonstop.

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

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Montreal round-trip from $113. Other airlines that can offer you cheap pricing are Porter Airlines, from $115, and United Airlines, from $222. Users have found that Air Canada is 71% cheaper than the other options available to this destination.

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

    Consider Republic Airways (87%), Avianca (83%) or Copa Airlines (83%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Montreal.

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

    On average you can expect to pay $3,943 for a flight from Washington, D.C. Dulles Intl Airport to Montreal. The cheapest flight overall is $187 while the most popular route, (Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at $321.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montreal (average of $288). Flying from Washington, D.C. Dulles Intl Airport to Montreal in December is currently the most expensive (average of $482). 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

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Top 3 airlines flying from Dulles Intl to Montreal

Discover the top 3 airlines that operate flights from Dulles Intl to Montreal. 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$113Average$368FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$115Average$310FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$222Average$511FlexibilityNo cancel feeOn-time69%

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