Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport from C$ 208

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — IAD
19 Aug — 26 Aug1
1 adult

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 14 August 2025.

Round-trip from

C$ 338

One-way from

C$ 208

Popular in

December

Cheapest in

May

Average price

C$ 488

Good round-trip deal

C$ 619 or less

Good one-way deal

C$ 395 or less
Porter Airlines
  • Porter Airlines
  • 2/10-5/10
  • 2 total stops
  • 8h 11m total
  • Montreal to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 29/9
  • 1 total stop
  • 4h 21m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl.
Search Deals

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 14 August 2025.

Fri 29/86:55 a.m.YUL - IAD
1 stop3h 46mPorter Airlines
Tue 2/94:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 12/8C$ 342
Thu 11/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Thu 18/94:20 p.m.IAD - YUL
1 stop5h 55mPorter Airlines
Deal found 14/8C$ 345
Thu 28/810:45 a.m.YUL - IAD
1 stop4h 11mPorter Airlines
Sun 31/811:55 a.m.IAD - YUL
1 stop6h 10mPorter Airlines
Deal found 13/8C$ 346
Thu 18/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 28/94:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 12/8C$ 347
Wed 3/98:55 a.m.YUL - IAD
1 stop6h 11mPorter Airlines
Mon 8/911:35 a.m.IAD - YUL
1 stop4h 25mPorter Airlines
Deal found 12/8C$ 361
Fri 29/810:00 a.m.YUL - IAD
1 stop4h 56mPorter Airlines
Fri 31/106:35 p.m.IAD - YUL
1 stop4h 10mPorter Airlines
Deal found 14/8C$ 364
Sat 6/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sat 13/94:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 13/8C$ 365
Tue 26/87:10 p.m.YUL - IAD
Nonstop1h 51mAir Canada
Wed 27/89:35 a.m.IAD - YUL
Nonstop1h 55mAir Canada
Deal found 12/8C$ 367
Thu 23/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 26/106:35 p.m.IAD - YUL
1 stop4h 10mPorter Airlines
Deal found 12/8C$ 368
Sun 14/98:55 a.m.YUL - IAD
1 stop6h 11mPorter Airlines
Mon 15/94:20 p.m.IAD - YUL
1 stop5h 55mPorter Airlines
Deal found 12/8C$ 369
Fri 29/87:10 p.m.YUL - IAD
Nonstop1h 51mAir Canada
Fri 31/109:45 a.m.IAD - YUL
Nonstop1h 53mAir Canada
Deal found 14/8C$ 371

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 14 August 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

Thu 2/10

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sun 5/10

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

1 stop4h 25m

C$ 338

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 22/10

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sun 26/10

6:35 p.m.-10:45 p.m.

1 stop4h 10m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 17/10

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sun 19/10

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 6/9

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sun 14/9

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 26/9

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Fri 3/10

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 29/8

6:55 a.m.-10:41 a.m.

1 stop3h 46m

Washington, D.C. Dulles Intl

Tue 2/9

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 4/9

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sat 13/9

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 27/9

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sat 4/10

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 5/9

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sun 14/9

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

1 stop3h 50m

C$ 342

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 10/10

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

1 stop4h 21m

Washington, D.C. Dulles Intl

Sat 18/10

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

1 stop3h 50m

C$ 342

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 23 results
1
2
3

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 8 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 14 August 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 28% on the flight price compared to flying in the morning, 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 10 August 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 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 Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Pierre Elliott Trudeau Intl 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 14 August 2025.

The most flights from YUL to IAD are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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

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

Share of one-stop round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport on Cheapflights.

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

Average round-trip fare for 1-stop flights from Montreal Pierre Elliott Trudeau Intl Airport 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$ 406.

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

Shortest average travel time for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 13m.

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

Average layover duration for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 31m.

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 14 August 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
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Overall

8.0

Entertainment

7.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
332 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Overall

8.0

Entertainment

7.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,916 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Overall

8.0

Entertainment

7.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Canada
7.1
Good
9,949 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Overall

8.0

Entertainment

7.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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.

  • 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$ 299. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at C$ 339 and C$ 362, respectively. Porter Airlines is 36% 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: Avianca (82%), Copa Airlines (80%), Republic Airways (80%).

  • 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$ 239. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl) can be booked for C$ 342 on average our data indicates C$ 1,341 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 14 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 299AverageC$ 402FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 339AverageC$ 498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 362AverageC$ 513FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.