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Cheap flights from Montreal to Washington, D.C. Dulles Intl Airport from C$ 231

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — IAD
27 Jan — 3 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to Dulles Intl
Explore the most affordable flight options available from Montreal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 December 2025.

Wed 31/126:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Sun 11/111:35 a.m.IAD - YUL
1 stop6h 10mPorter Airlines
Deal found 28/12C$ 534
Wed 31/127:00 p.m.YUL - IAD
Nonstop1h 59mAir Canada
Sun 11/19:45 a.m.IAD - YUL
Nonstop1h 45mAir Canada
Deal found 26/12C$ 616
Tue 30/126:00 a.m.YUL - IAD
1 stop15h 21mAir Canada
Wed 14/18:20 a.m.IAD - YUL
2 stops12h 25mAir Canada
Deal found 27/12C$ 640
Tue 30/121:15 p.m.YUL - IAD
2 stops11h 00mAir Canada
Sat 17/11:05 p.m.IAD - YUL
2 stops11h 27mAir Canada
Deal found 27/12C$ 649
Wed 31/126:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Thu 8/111:35 a.m.IAD - YUL
1 stop4h 55mPorter Airlines
Deal found 28/12C$ 674

Find flight deals from Montreal to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) 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 28 December 2025.

Round-trip from

C$ 338

One-way from

C$ 231

Popular in

December

Cheapest in

February

Average price

C$ 581

Good round-trip deal

C$ 568 or less

Good one-way deal

C$ 371 or less
Air Canada
  • Air Canada
  • 17/3-24/3
  • 2 total stops
  • 11h 28m total
  • Montreal to Washington, D.C.
Search Deals
22/1
  • 22/1
  • 2 total stops
  • 32h 33m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Montreal (YMQ) to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal 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 629,999 searches. Data last updated 28 December 2025.
Use the filters below to find and compare flights from Montreal to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Montreal

Fly to

Dulles Intl

Route

Depart

Return

Price

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

11:10 a.m.-3:46 p.m.

1 stop4h 36m

Washington, D.C. Dulles Intl

Tue 24/3

4:30 p.m.-11:22 p.m.

1 stop6h 52m

C$ 338

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Sun 11/1

9:00 a.m.-1:22 p.m.

1 stop4h 22m

C$ 340

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 17/4

5:50 p.m.-7:40 p.m.

Nonstop1h 50m

Washington, D.C. Dulles Intl

Wed 22/4

9:00 a.m.-2:21 p.m.

1 stop5h 21m

C$ 344

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Sun 1/3

9:00 a.m.-1:22 p.m.

1 stop4h 22m

C$ 344

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 27/1

10:10 a.m.-3:46 p.m.

1 stop5h 36m

Washington, D.C. Dulles Intl

Tue 3/2

9:45 a.m.-11:30 a.m.

Nonstop1h 45m

C$ 344

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Mon 12/1

9:00 a.m.-1:22 p.m.

1 stop4h 22m

C$ 344

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Fri 30/1

9:00 a.m.-7:14 p.m.

2 stops10h 14m

C$ 353

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 11/2

11:10 a.m.-3:49 p.m.

1 stop4h 39m

Washington, D.C. Dulles Intl

Wed 18/2

4:30 p.m.-10:22 p.m.

1 stop5h 52m

C$ 361

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

10:10 a.m.-3:46 p.m.

1 stop5h 36m

Washington, D.C. Dulles Intl

Wed 11/2

4:30 p.m.-9:52 p.m.

1 stop5h 22m

C$ 361

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 20/3

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Thu 2/4

9:55 a.m.-11:38 a.m.

Nonstop1h 43m

C$ 365

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/12

Showing 1-10 of 21 results
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Best time to book a flight from Montreal to Dulles Intl

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

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

Currently, March is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 216). Flying from Montreal to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of C$ 350). 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 YMQ to IAD?

Find hourly flight availability from Montreal 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 28 December 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 35% on flights from Montreal to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Montreal to Dulles Intl. Price data was last updated on 27 December 2025.

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

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

Explore weekly flight availability from Montreal 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 28 December 2025.

The most flights from YMQ to IAD are scheduled on a Monday (8 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

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

What’s the top layover airport for flights from Montreal to Washington, D.C. Dulles Intl Airport?

Share of one-stop round-trip flights from Montreal to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Toronto (YTZ) – chosen by Cheapflights users on 94% of one-stop itineraries from Montreal to Washington, D.C. Dulles Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Montreal to Washington, D.C. Dulles Intl Airport?

Average round-trip fare for 1-stop flights from Montreal to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 403.

What’s the fastest layover option from Montreal to Washington, D.C. Dulles Intl Airport?

Shortest average travel time for 1-stop one-way flights from Montreal to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YTZ) have the shortest average one-way travel time for 1-stop routes: 4h 07m.

Which airport typically offers the quickest layover for flights from Montreal to Washington, D.C. Dulles Intl Airport?

Average layover duration for 1-stop one-way flights from Montreal to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YTZ) offer the fastest connection on this route, with an average layover time of 1h 15m.

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 28 December 2025.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAir Canada from Montreal to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
402 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
402 reviews
Porter Airlines
8.0
Very good
402 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,114 reviews
Porter Airlines
8.0
Very good
402 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,562 reviews
Porter Airlines
8.0
Very good
402 reviews
Check prices

Crew

8.6

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

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

    A quick flight from Montreal to Washington, D.C. Dulles Intl Airport can take about 4h 36m. Air Canada provides one of the quickest options available for as low as C$ 338. There are 785 km between Montreal and Washington, D.C. Dulles Intl Airport.

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

    Flying on Porter Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at C$ 296. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at C$ 329 and C$ 359, respectively. Porter Airlines is 35% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as C$ 185. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Montreal to Washington, D.C. Dulles Intl Airport for a low price.

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

    The top 3 most reliable airlines when flying from Montreal to Washington, D.C. Dulles Intl Airport are Copa Airlines (89%), Avianca (85%) and Republic Airways (85%).

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

    Looking at all options, your cheapest flight can be booked for C$ 229. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl) can be booked for C$ 299 on average, our data indicates C$ 852 when flying from Montreal to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 216). Flying from Montreal to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of C$ 350). 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

Travelling 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
Silver Spring
Warrenton
Winchester
Hanover
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Herndon
Manassas
Fredericksburg
Alexandria
Rockville

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Top 3 airlines flying from Montreal to Dulles Intl

Discover the top 3 airlines that operate flights from Montreal 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 629,999 searches. Data last updated 28 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 296AverageC$ 367FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 336AverageC$ 472FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 374AverageC$ 508FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Montreal to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Montreal today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Montreal to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal to Dulles Intl.

Can Cheapflights find flights from Montreal to Dulles Intl with no change fees?

Need flexible booking options for your flight to Dulles Intl from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Montreal today and book when prices fit your budget.

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