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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport from C$ 215

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — IAD
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl are usually found in May or March, booked 88 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Pierre Elliott Trudeau Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) 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 11 September 2025.

Round-trip from

C$ 341

One-way from

C$ 215

Popular in

December

Cheapest in

May

Average price

C$ 463

Good round-trip deal

C$ 703 or less

Good one-way deal

C$ 440 or less
Porter Airlines
  • Porter Airlines
  • 9/10-13/10
  • 2 total stops
  • 8h 11m total
  • Montreal to Washington, D.C.
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Air Canada
  • Air Canada
  • 4/11
  • Nonstop
  • 1h 54m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 113 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl.
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Find flight deals from Pierre Elliott Trudeau Intl to Dulles Intl

Cheapest flights from Pierre Elliott Trudeau Intl to Dulles Intl
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Thu 9/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Mon 13/104:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 9/9C$ 341
Thu 25/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Tue 30/94:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 11/9C$ 344
Sat 27/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Mon 29/94:20 p.m.IAD - YUL
1 stop5h 55mPorter Airlines
Deal found 10/9C$ 345
Sat 8/118:55 a.m.YUL - IAD
1 stop3h 34mPorter Airlines
Sun 9/116:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Deal found 9/9C$ 346
Tue 7/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Mon 13/104:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 9/9C$ 348
Thu 25/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 28/94:20 p.m.IAD - YUL
1 stop5h 55mPorter Airlines
Deal found 10/9C$ 349
Tue 21/109:15 a.m.YUL - IAD
1 stop4h 23mAir Canada
Sun 26/109:45 a.m.IAD - YUL
Nonstop1h 53mAir Canada
Deal found 9/9C$ 352
Sat 1/118:55 a.m.YUL - IAD
1 stop3h 34mPorter Airlines
Sun 30/116:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Deal found 9/9C$ 356
Fri 3/107:10 p.m.YUL - IAD
Nonstop1h 55mAir Canada
Sun 5/109:35 a.m.IAD - YUL
Nonstop1h 53mAir Canada
Deal found 10/9C$ 360
Wed 24/97:10 p.m.YUL - IAD
Nonstop1h 55mAir Canada
Tue 30/99:35 a.m.IAD - YUL
Nonstop1h 53mAir Canada
Deal found 10/9C$ 363
Sat 11/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 19/1011:35 a.m.IAD - YUL
1 stop6h 30mPorter Airlines
Deal found 10/9C$ 366
Thu 20/116:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Sun 23/1111:40 a.m.IAD - YUL
1 stop6h 05mPorter Airlines
Deal found 9/9C$ 370

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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 11 September 2025.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 22/10

7:00 a.m.-1:38 p.m.

1 stop6h 38m

Washington, D.C. Dulles Intl

Sun 26/10

9:45 a.m.-11:38 a.m.

Nonstop1h 53m

C$ 352

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 3/10

10:45 a.m.-3:06 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Mon 6/10

4:20 p.m.-10:15 p.m.

1 stop5h 55m

C$ 363

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

10:45 a.m.-3:06 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Mon 29/9

4:20 p.m.-8:10 p.m.

1 stop3h 50m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 21/11

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

Nonstop1h 54m

Washington, D.C. Dulles Intl

Tue 25/11

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

Nonstop1h 45m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

6:45 a.m.-10:24 a.m.

1 stop3h 39m

Washington, D.C. Dulles Intl

Sun 23/11

11:40 a.m.-5:45 p.m.

1 stop6h 05m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 24/9

7:00 a.m.-4:27 p.m.

2 stops9h 27m

Washington, D.C. Dulles Intl

Mon 29/9

3:31 p.m.-11:56 p.m.

1 stop8h 25m

C$ 378

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 23/9

6:00 a.m.-2:33 p.m.

2 stops8h 33m

Washington, D.C. Dulles Intl

Wed 1/10

10:07 a.m.-5:50 p.m.

1 stop7h 43m

C$ 378

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 23/9

6:00 a.m.-2:33 p.m.

2 stops8h 33m

Washington, D.C. Dulles Intl

Tue 30/9

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

1 stop5h 34m

C$ 378

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 27/9

7:00 a.m.-4:27 p.m.

1 stop9h 27m

Washington, D.C. Dulles Intl

Tue 30/9

1:00 p.m.-9:57 p.m.

2 stops8h 57m

C$ 378

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 5/12

6:00 a.m.-6:24 p.m.

2 stops12h 24m

Washington, D.C. Dulles Intl

Wed 10/12

7:01 a.m.-5:24 p.m.

1 stop10h 23m

C$ 378

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 23 results
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Best time to book a flight from Pierre Elliott Trudeau Intl to Dulles Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Dulles Intl. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 87 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 Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Montreal Pierre Elliott Trudeau Intl Airport 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 YUL to IAD?

Find hourly flight availability from Pierre Elliott Trudeau Intl 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 11 September 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport in the afternoon. Doing so could potentially save you 36% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to Dulles Intl. Price data was last updated on 7 September 2025.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday afternoons 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.

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 11 September 2025.
Read reviews from past customers who have flown Porter Airlines,United Airlines, andAir Canada from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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
8,937 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Overall

7.9

Entertainment

7.0

Comfort

7.9

Food

7.6

Boarding

8.1

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 Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport in 4h 21m. Fly via Air Canada or Porter Airlines to get the fastest option. Montreal Pierre Elliott Trudeau Intl Airport and Washington, D.C. Dulles Intl Airport are separated by a distance of 785 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport 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$ 303. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at C$ 341 and C$ 364, respectively. Porter Airlines is 35% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport on time: Sun Country Air (100%), Avianca (87%), Copa Airlines (86%).

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

    Looking at all options, your cheapest flight can be booked for C$ 214. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl) can be booked for C$ 301 on average, our data indicates C$ 699 when flying from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport.

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

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

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Dulles Intl?

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

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Dulles Intl?

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

    Currently, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Montreal Pierre Elliott Trudeau Intl Airport 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

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

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Alternative routes for Pierre Elliott Trudeau Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Reagan-National flights
Pierre Elliott Trudeau Intl to Baltimore flights

Top 3 airlines flying from Pierre Elliott Trudeau Intl to Dulles Intl

Discover the top 3 airlines that operate flights from Pierre Elliott Trudeau Intl 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 303AverageC$ 399FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 341AverageC$ 492FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 364AverageC$ 549FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Dulles Intl?

Deals for Pierre Elliott Trudeau Intl to Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Dulles Intl?

Cheapflights simply makes it quick and affordable to book flights from Pierre Elliott Trudeau Intl to Dulles Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Dulles Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Pierre Elliott Trudeau Intl to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Dulles Intl become cheaper?

Yes, Cheapflights offers price alerts on Pierre Elliott Trudeau Intl to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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