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$135+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YMQ
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Montreal are usually found in January or July, booked 58 days in advance, depart on a Thursday or Friday and return on a Saturday

Find 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 October 29, 2025.

This Flightnetwork deal was found by Cheapflights users on 10/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/61:45 pmIAD - YUL
1 stop5h 00mMultiple Airlines
Fri 12/127:00 pmYUL - IAD
Nonstop1h 59mMultiple Airlines
Deal found 10/27$262
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/221:45 pmIAD - YUL
1 stop5h 00mPorter Airlines
Tue 11/2511:25 amYUL - IAD
1 stop5h 49mPorter Airlines
Deal found 10/28$266
This Trip.com deal was found by Cheapflights users on 10/26. 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 11/2711:40 amIAD - YUL
1 stop6h 05mPorter Airlines
Tue 12/211:25 amYUL - IAD
1 stop5h 49mPorter Airlines
Deal found 10/26$267
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Thu 12/1111:40 amIAD - YUL
1 stop4h 50mMultiple Airlines
Mon 12/157:00 pmYUL - IAD
Nonstop1h 59mMultiple Airlines
Deal found 10/27$268
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Fri 11/216:30 pmIAD - YUL
1 stop4h 15mPorter Airlines
Tue 11/251:40 pmYUL - IAD
1 stop3h 34mPorter Airlines
Deal found 10/28$271
This CheapOair deal was found by Cheapflights users on 10/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:30 pmIAD - YUL
1 stop4h 15mPorter Airlines
Mon 11/2411:25 amYUL - IAD
1 stop5h 49mPorter Airlines
Deal found 10/27$273
This oojo deal was found by Cheapflights users on 10/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 pmIAD - YUL
1 stop4h 15mPorter Airlines
Fri 11/281:40 pmYUL - IAD
1 stop3h 34mPorter Airlines
Deal found 10/28$276
This SmartFares deal was found by Cheapflights users on 10/27. 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 12/56:30 pmIAD - YUL
1 stop4h 15mPorter Airlines
Mon 12/86:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Deal found 10/27$277
This oojo deal was found by Cheapflights users on 10/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:40 amIAD - YUL
1 stop6h 05mPorter Airlines
Wed 11/196:45 amYUL - IAD
1 stop3h 39mPorter Airlines
Deal found 10/27$282

Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Mytrip)

One-way from

$135
(Porter Airlines)

Popular in

December

Cheapest in

January

Average price

$404

Good round-trip deal

$347 or less

Good one-way deal

$174 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
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 29, 2025.
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

Dulles Intl

Fly to

Montreal

Route

Depart

Return

Price

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 11/21

6:30 pm-10:45 pm

1 stop4h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 11/24

6:45 am-11:03 pm

2 stops16h 18m

$334

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 12/2

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 12/9

9:15 am-11:23 am

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 11/26

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 11/29

9:15 am-11:23 am

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 12/4

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Mon 12/8

7:00 pm-8:59 pm

Nonstop1h 59m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 11/13

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Sun 11/16

9:15 am-11:23 am

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sun 11/23

5:50 pm-7:48 pm

Nonstop1h 58m

Montreal Pierre Elliott Trudeau Intl

Fri 11/28

9:15 am-11:23 am

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sat 11/22

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 11/25

2:13 pm-4:21 pm

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sat 11/22

5:50 pm-7:48 pm

Nonstop1h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 11/29

2:13 pm-4:21 pm

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 12/4

1:20 pm-3:16 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Sun 12/7

9:15 am-11:23 am

Nonstop2h 08m

$349

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 12/3

5:50 pm-7:48 pm

Nonstop1h 58m

Montreal Pierre Elliott Trudeau Intl

Sun 12/7

9:15 am-11:23 am

Nonstop2h 08m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 21 results
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Compare providers for flights from Dulles Intl to Montreal

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 Dulles Intl to Montreal in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice 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 Washington, D.C. Dulles Intl Airport-Montreal flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Montreal flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Montreal. Price data was last updated on October 24, 2025.

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 58 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 Washington, D.C. Dulles Intl Airport to Montreal?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montreal (average of $113). Flying from Washington, D.C. Dulles Intl Airport to Montreal in August is currently the most expensive (average of $255). 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 October 29, 2025.

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.

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 December 16, 2024.

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

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

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 October 29, 2025.
See what other customers who have flown with Porter Airlines, United Airlines, and Air 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
384 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.6

Entertainment

7.0

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.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.6

Entertainment

7.0

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.
United Airlines
7.4
Good
9,001 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.6

Entertainment

7.0

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.
Air Canada
7.1
Good
10,371 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.6

Entertainment

7.0

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 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 1h 56m. 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 $137. Other airlines that can offer you cheap pricing are United Airlines, from $242, and Porter Airlines, from $247. Users have found that Air Canada is 61% 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 Jazz (93%), Air Canada (90%) or Avianca (89%) 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 $919 for a flight from Washington, D.C. Dulles Intl Airport to Montreal. The cheapest flight overall is $137 while the most popular route, (Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at $227.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montreal (average of $113). Flying from Washington, D.C. Dulles Intl Airport to Montreal in August is currently the most expensive (average of $255). 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$137Average$383FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$242Average$403FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$247Average$326FlexibilityNo cancel feeOn-time52%

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