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Cheap flights from Montreal to Washington, D.C. Dulles Intl Airport from C$ 200

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 17/7. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — IAD
7 Jul — 14 Jul1
1 adult

Cheap 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 2 July 2025.

Round-trip from

C$ 331

One-way from

C$ 200

Popular in

June

Cheapest in

February

Average price

C$ 541

Good round-trip deal

C$ 622 or less

Good one-way deal

C$ 369 or less
Porter Airlines
  • Porter Airlines
  • 26/8-4/9
  • 2 total stops
  • 10h 26m total
  • Montreal to Washington, D.C.
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Porter Airlines
  • Porter Airlines
  • 17/7
  • 1 total stop
  • 4h 11m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 57 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
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Average for round-trip flights in July 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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Find flight deals from Montreal to Dulles Intl

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 2 July 2025.

Tue 26/88:55 a.m.YUL - IAD
1 stop6h 01mPorter Airlines
Thu 4/911:35 a.m.IAD - YUL
1 stop4h 25mPorter Airlines
Deal found 2/7C$ 331
Tue 26/87:10 p.m.YUL - IAD
Nonstop1h 51mAir Canada
Mon 29/99:35 a.m.IAD - YUL
Nonstop1h 53mAir Canada
Deal found 30/6C$ 333
Wed 16/79:15 a.m.YUL - IAD
Nonstop1h 59mUnited Airlines
Tue 29/71:03 p.m.IAD - YUL
Nonstop1h 57mUnited Airlines
Deal found 1/7C$ 368
Tue 26/86:00 a.m.YUL - IAD
2 stops8h 31mDelta
Sun 28/95:25 p.m.IAD - YUL
1 stop6h 31mDelta
Deal found 30/6C$ 373
Wed 30/78:55 a.m.YUL - IAD
1 stop6h 01mMultiple Airlines
Sun 3/89:35 a.m.IAD - YUL
Nonstop1h 55mMultiple Airlines
Deal found 30/6C$ 391
Thu 17/72:20 p.m.YUL - IAD
Nonstop1h 59mLufthansa
Sun 20/75:31 p.m.IAD - YUL
Nonstop2h 14mLufthansa
Deal found 30/6C$ 392

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 2 July 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 26/8

8:55 a.m.-2:56 p.m.

1 stop6h 01m

Washington, D.C. Dulles Intl

Thu 4/9

11:35 a.m.-4:00 p.m.

1 stop4h 25m

C$ 331

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 26/8

7:10 p.m.-9:01 p.m.

Nonstop1h 51m

Washington, D.C. Dulles Intl

Mon 29/9

9:35 a.m.-11:28 a.m.

Nonstop1h 53m

C$ 333

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 16/7

9:15 a.m.-11:14 a.m.

Nonstop1h 59m

Washington, D.C. Dulles Intl

Tue 29/7

1:03 p.m.-3:00 p.m.

Nonstop1h 57m

C$ 368

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 26/8

6:00 a.m.-2:31 p.m.

2 stops8h 31m

Washington, D.C. Dulles Intl

Thu 25/9

6:00 a.m.-11:34 a.m.

1 stop5h 34m

C$ 373

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 30/7

8:55 a.m.-2:56 p.m.

1 stop6h 01m

Washington, D.C. Dulles Intl

Sun 3/8

9:35 a.m.-11:30 a.m.

Nonstop1h 55m

C$ 391

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 17/7

2:20 p.m.-4:19 p.m.

Nonstop1h 59m

Washington, D.C. Dulles Intl

Sun 20/7

5:31 p.m.-7:45 p.m.

Nonstop2h 14m

C$ 392

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 17/7

10:45 a.m.-2:56 p.m.

1 stop4h 11m

C$ 200

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

8:00 a.m.-1:38 p.m.

1 stop5h 38m

C$ 213

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 7/8

2:20 p.m.-4:19 p.m.

Nonstop1h 59m

C$ 222

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 12/8

6:00 a.m.-2:31 p.m.

2 stops8h 31m

C$ 233

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 11 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, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Montreal to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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 2 July 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 23% 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 29 June 2025.

Travelers seeking maximum savings on their Montreal to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday evenings 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 2 July 2025.

The most flights from YMQ to IAD are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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 2 July 2025.
Check out reviews from past customers who have flown with Porter Airlines,Delta, andUnited Airlines 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
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Porter Airlines
8.0
Very good
298 reviews
Porter Airlines
8.0
Very good
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Delta
8.0
Very good
7,975 reviews
Porter Airlines
8.0
Very good
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
United Airlines
7.4
Good
8,861 reviews
Porter Airlines
8.0
Very good
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
WestJet
7.2
Good
2,912 reviews
Porter Airlines
8.0
Very good
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Air Canada
7.1
Good
9,671 reviews
Porter Airlines
8.0
Very good
298 reviews
Check prices

Crew

8.7

Overall

8.0

Boarding

8.2

Comfort

8.1

Food

7.7

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

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.

  • 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$ 331. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at C$ 333 and C$ 368, respectively. Porter Airlines is 30% 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$ 200. 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 Avianca (88%), Copa Airlines (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$ 261. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl) can be booked for C$ 292 on average our data indicates C$ 1,196 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, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Montreal to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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 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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 304AverageC$ 393FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 318AverageC$ 496FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 335AverageC$ 506FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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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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