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$134+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YMQ
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
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 August, booked 60 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 May 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/16. 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 6/1411:30 am
IAD
-
YUL
1 stop5h 45m
Porter Airlines
Thu 6/2510:35 am
YUL
-
IAD
1 stop4h 41m
Porter Airlines
Deal found 5/16$265
This Mytrip deal was found by Cheapflights users on 5/17. 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.
Sat 6/63:45 pm
IAD
-
YUL
Nonstop1h 53m
Air Canada
Mon 6/810:30 am
YUL
-
IAD
1 stop5h 42m
Air Canada
Deal found 5/17$266
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/811:30 am
IAD
-
YUL
1 stop5h 45m
Porter Airlines
Thu 6/186:30 am
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 5/19$273
This Kiwi.com deal was found by Cheapflights users on 5/18. 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.
Mon 7/133:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Mon 7/206:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 5/18$274
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Sun 6/2111:30 am
IAD
-
YUL
1 stop6h 40m
Porter Airlines
Thu 6/256:30 am
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 5/19$275
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 8/133:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Thu 8/206:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 5/19$276
This Trip.com deal was found by Cheapflights users on 5/18. 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 6/2211:30 am
IAD
-
YUL
1 stop6h 40m
Porter Airlines
Mon 6/296:30 am
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 5/18$277
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 7/711:30 am
IAD
-
YUL
1 stop6h 40m
Porter Airlines
Fri 7/106:30 am
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Deal found 5/15$278
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:15 pm
IAD
-
YUL
1 stop4h 30m
Air Canada
Tue 6/910:30 am
YUL
-
IAD
1 stop5h 42m
Air Canada
Deal found 5/19$280
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 7/2511:25 am
IAD
-
YUL
1 stop6h 45m
Porter Airlines
Mon 7/276:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 5/18$281
This Kiwi.com deal was found by Cheapflights users on 5/18. 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.
Thu 8/133:50 pm
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Wed 8/196:30 am
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Deal found 5/18$282

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 May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$265
(Kiwi.com)

One-way from

$134
(CheapOair)

Popular in

December

Cheapest in

March

Average price

$388

Good round-trip deal

$492 or less

Good one-way deal

$242 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. 12% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 20, 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 7/7

5:34 pm-7:45 pm

Nonstop2h 11m

Montreal Pierre Elliott Trudeau Intl

Fri 7/10

9:15 am-11:12 am

Nonstop1h 57m

$386
Quickest round-trip

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sat 7/4

12:44 pm-2:40 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Fri 7/10

9:15 am-11:12 am

Nonstop1h 57m

$386

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 6/1

5:34 pm-7:45 pm

Nonstop2h 11m

Montreal Pierre Elliott Trudeau Intl

Mon 6/8

6:35 pm-8:40 pm

Nonstop2h 05m

$386

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sun 6/7

10:11 pm-12:13 am

Nonstop2h 02m

Montreal Pierre Elliott Trudeau Intl

Fri 6/12

2:20 pm-4:19 pm

Nonstop1h 59m

$386

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Thu 7/9

12:44 pm-2:40 pm

Nonstop1h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 7/14

9:15 am-11:12 am

Nonstop1h 57m

$451

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 7/3

5:29 pm-11:28 pm

1 stop5h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 7/6

6:50 pm-12:44 am

1 stop5h 54m

$459

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 7/8

5:26 pm-11:25 pm

1 stop5h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 7/13

12:47 pm-12:41 am

2 stops11h 54m

$469

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sun 9/13

10:40 am-11:56 pm

2 stops13h 16m

Montreal Pierre Elliott Trudeau Intl

Wed 9/16

6:00 am-5:58 pm

2 stops11h 58m

$474

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 8/19

6:00 am-6:54 pm

2 stops12h 54m

Montreal Pierre Elliott Trudeau Intl

Fri 8/21

12:47 pm-12:33 am

2 stops11h 46m

$474

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 6/19

10:11 pm-12:13 am

Nonstop2h 02m

Montreal Pierre Elliott Trudeau Intl

Sun 6/21

9:15 am-11:12 am

Nonstop1h 57m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 21 resultsSorted by cheapest first
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2
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  • 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 $105). Flying from Washington, D.C. Dulles Intl Airport to Montreal in February is currently the most expensive (average of $197). 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 May 20, 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 32% 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 May 20, 2026.

The most flights from IAD to YMQ are scheduled on a Monday (15 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip 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?

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 79 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 May 16, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Montreal flight should consider departing on Monday 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 May 20, 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
439 reviews

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.0

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
439 reviews
Porter Airlines
8.0
Very good
439 reviews

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.0

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.
United Airlines
7.4
Good
9,739 reviews
Porter Airlines
8.0
Very good
439 reviews

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.0

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
11,066 reviews
Porter Airlines
8.0
Very good
439 reviews

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.0

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 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 11m. 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 $148, and United Airlines, from $222. Users have found that Air Canada is 70% 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 Avianca (93%), United Airlines (93%) or Air Canada (92%) 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 $1,132 for a flight from Washington, D.C. Dulles Intl Airport to Montreal. The cheapest flight overall is $184 while the most popular route, (Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at $274.

  • 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 $105). Flying from Washington, D.C. Dulles Intl Airport to Montreal in February is currently the most expensive (average of $197). 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 May 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$113Average$369FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$148Average$289FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$222Average$458FlexibilityNo cancel feeOn-time69%

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