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

Our cheapest airline available from Washington, D.C. to Montreal is Air Canada. Our recent data shows that you can find tickets from as low as $132 on this airline. Additional options worth looking into are United Airlines and Porter Airlines, starting at $223 and $253 round-trip. Air Canada is currently priced 66% below the average price you’ll pay for this route.

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

The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $118. However, be on the lookout for offers from Air Canada and Delta, as they are both options that can get you from Washington, D.C. to Montreal for a low price.

In terms of precipitation, rainfall in Montreal ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Montreal when rainfall is around 2.5 in.

If weather is an important factor for your trip to Montreal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

What are the most popular routes from Washington, D.C. to Montreal?

The most popular route from Washington, D.C. to Montreal is Washington, D.C. Reagan-National - Montreal Pierre Elliott Trudeau Intl. You may also consider Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl or Baltimore/Washington - Montreal Pierre Elliott Trudeau Intl.

What are the cheapest flights from Washington, D.C. to Montreal?

Looking at all options, your cheapest flight can be booked for $137. While the most popular route (Washington, D.C. Reagan-National - Montreal Pierre Elliott Trudeau Intl) can be booked for $311 on average our data indicates $982 when flying from Washington, D.C. to Montreal.

What are the most reliable airlines from Washington, D.C. to Montreal?

The top 3 most reliable airlines when flying from Washington, D.C. to Montreal are Jazz (82%), United Airlines (80%) and Republic Airways (79%).

What are the most popular airlines that fly from Washington, D.C. to Montreal?

Air Canada, Porter Airlines and United Airlines are the most popular airlines when flying from Washington, D.C. to Montreal.

What is the cheapest day to fly round-trip from Washington, D.C. to Montreal?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 32% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Washington, D.C. to Montreal?

Users have found that booking a flight from Washington, D.C. to Montreal at least 60 days early can save you up to 125% on average compared to booking a flight this week. If booking 60 days before your flight isn’t an option for you, users have found flights from Washington, D.C. to Montreal for as little as $361 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $667 for flights departing within the next 3 days.

What is the cheapest month to fly from Washington, D.C. to Montreal?

Flights from Washington, D.C. to Montreal lean towards being more expensive in December. Prices are generally better when you fly from Washington, D.C. to Montreal in March, with the cheapest ticket starting at $143.

Can I find deals for flights from Washington, D.C. to Montreal that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Montreal?

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

Can I find deals for business class flights from Washington, D.C. to Montreal?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$118+ Flights from Washington, D.C. to Montreal

Q: How much does it cost to fly round-trip from Washington, D.C. to Montreal?

Airfare is below average for this route at the moment. Washington, D.C. to Montreal flights typically cost between $316 and $516 in October. The cheapest round-trip price found within the last 3 days was $266 on Porter Airlines (Oct 11-Oct 19).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Washington, D.C. to Montreal are usually found in March or February, booked 76 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Washington, D.C. to Montreal

Round-trip from	$266 (Kiwi.com)
One-way from	$118 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$392
Good round-trip deal	$368 or less
Good one-way deal	$164 or less

From Washington, D.C. (WAS) to Montreal (YMQ)

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One-way flight from Washington, D.C. (WAS) to Montreal (YMQ)

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Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Montreal (YMQ).

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Price to beat on a one-way flight from Washington, D.C. (WAS) to Montreal (YMQ).

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Find flight deals from Washington, D.C. to Montreal

Cheapest flights from Washington, D.C. to Montreal
Explore the most affordable flight options available from Washington, D.C. to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Sat 10/114:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Sun 10/198:55 amYUL - IAD

1 stop6h 11mPorter Airlines

Deal found 8/12

$266

Wed 9/34:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Wed 9/1010:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$268

Fri 9/124:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Fri 9/1910:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$269

Fri 10/104:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Mon 10/2010:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/12

$272

Mon 8/254:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Tue 8/2610:45 amYUL - IAD

1 stop4h 11mPorter Airlines

Deal found 8/11

$276

Wed 8/274:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Sun 8/317:00 amYUL - IAD

1 stop3h 36mPorter Airlines

Deal found 8/13

$277

Fri 9/194:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Fri 9/2610:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/14

$279

Thu 9/114:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Tue 9/2310:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/11

$280

Fri 9/264:20 pmIAD - YUL

1 stop5h 55mMultiple Airlines

Fri 10/37:10 pmYUL - IAD

Nonstop1h 55mMultiple Airlines

Deal found 8/11

$281

Sun 9/289:40 amDCA - YUL

Nonstop1h 49mAir Canada

Sun 10/58:30 amYUL - DCA

Nonstop1h 50mAir Canada

Deal found 8/14

$282

Sat 10/44:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Fri 10/1010:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$283

Thu 9/2511:35 amIAD - YUL

1 stop4h 25mPorter Airlines

Tue 9/308:55 amYUL - IAD

1 stop6h 11mPorter Airlines

Deal found 8/14

$284

Best flights from Washington, D.C. to Montreal
Discover carefully curated flight deals from Washington, D.C. to Montreal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Sat 10/114:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Sun 10/198:55 amYUL - IAD

1 stop6h 11mPorter Airlines

Deal found 8/12

$266

Sun 9/289:40 amDCA - YUL

Nonstop1h 49mAir Canada

Sun 10/58:30 amYUL - DCA

Nonstop1h 50mAir Canada

Deal found 8/14

$282

Tue 9/97:49 pmBWI - YUL

3 stops25h 28mMultiple Airlines

Fri 9/126:45 amYUL - BWI

2 stops13h 02mMultiple Airlines

Deal found 8/13

$349

Fri 9/124:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Fri 9/1910:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$268

Sat 10/116:00 amDCA - YUL

Nonstop1h 49mAir Canada

Sun 10/198:15 amYUL - DCA

1 stop3h 53mAir Canada

Deal found 8/12

$285

Fri 9/194:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Mon 9/2210:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$268

Sat 10/46:00 amDCA - YUL

Nonstop1h 49mAir Canada

Mon 10/68:00 pmYUL - DCA

Nonstop1h 51mAir Canada

Deal found 8/13

$292

Wed 9/34:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Wed 9/1010:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/13

$268

Wed 9/178:52 pmBWI - YUL

1 stop17h 28mMultiple Airlines

Sun 9/216:45 amYUL - BWI

2 stops13h 02mMultiple Airlines

Deal found 8/14

$349

Thu 9/46:00 amDCA - YUL

Nonstop1h 49mAir Canada

Sun 9/78:15 amYUL - DCA

1 stop3h 53mAir Canada

Deal found 8/13

$293

Mon 9/294:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Fri 10/310:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/14

$269

Fri 9/56:38 amBWI - YUL

2 stops17h 49mMultiple Airlines

Wed 9/107:00 amYUL - BWI

3 stops24h 01mMultiple Airlines

Deal found 8/11

$350

Last-minute flights from Washington, D.C. to Montreal
Discover last-minute flight deals from Washington, D.C. to Montreal. Data last updated August 14, 2025 and is based on user searches.

Tue 8/194:10 pmIAD - YUL

1 stop6h 05mPorter Airlines

Sat 8/3010:20 amYUL - IAD

1 stop4h 36mPorter Airlines

Deal found 8/12

$365

Wed 8/204:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Sat 8/3010:20 amYUL - IAD

1 stop4h 36mPorter Airlines

Deal found 8/13

$375

Wed 8/206:00 amDCA - YUL

1 stop4h 07mWestJet

Mon 8/256:00 amYUL - DCA

1 stop12h 59mWestJet

Deal found 8/11

$392

Wed 8/204:10 pmIAD - YUL

1 stop4h 00mMultiple Airlines

Tue 3/314:55 pmYUL - IAD

1 stop6h 07mMultiple Airlines

Deal found 8/11

$395

Wed 8/204:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Sun 3/291:55 pmYUL - IAD

1 stop3h 39mPorter Airlines

Deal found 8/13

$416

Thu 8/214:10 pmIAD - YUL

1 stop6h 05mPorter Airlines

Mon 8/2510:45 amYUL - IAD

1 stop4h 11mPorter Airlines

Deal found 8/11

$378

Thu 8/214:10 pmIAD - YUL

1 stop6h 05mPorter Airlines

Thu 9/1110:45 amYUL - IAD

1 stop4h 21mPorter Airlines

Deal found 8/12

$392

Sat 8/234:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Tue 8/2610:45 amYUL - IAD

1 stop4h 11mPorter Airlines

Deal found 8/12

$400

Sat 8/234:10 pmIAD - YUL

1 stop4h 00mPorter Airlines

Sun 8/317:00 amYUL - IAD

1 stop3h 36mPorter Airlines

Deal found 8/12

$403

Sun 8/2411:35 amIAD - YUL

1 stop4h 25mPorter Airlines

Thu 8/2810:45 amYUL - IAD

1 stop4h 11mPorter Airlines

Deal found 8/14

$355

Sun 8/249:35 amIAD - YUL

Nonstop1h 55mAir Canada

Thu 8/287:10 pmYUL - IAD

Nonstop1h 51mAir Canada

Deal found 8/14

$419

Sun 8/249:40 amDCA - YUL

Nonstop1h 49mAir Canada

Thu 8/288:30 amYUL - DCA

Nonstop1h 48mAir Canada

Deal found 8/14

$419

One-way flights from Washington, D.C. to Montreal
Search for one-way flight options from Washington, D.C. to Montreal. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Sun 10/194:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Deal found 8/12

$118

Fri 9/124:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Deal found 8/11

$119

Fri 9/264:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Deal found 8/12

$120

Sat 9/134:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Deal found 8/14

$121

Sun 9/74:20 pmIAD - YUL

1 stop5h 55mPorter Airlines

Deal found 8/13

$122

Sun 9/2111:35 amIAD - YUL

1 stop6h 30mPorter Airlines

Deal found 8/12

$124

Mon 9/297:14 pmIAD - YUL

3 stops27h 01mMultiple Airlines

Deal found 8/12

$125

Sun 10/199:35 amIAD - YUL

Nonstop1h 53mAir Canada

Deal found 8/14

$126

Sun 10/194:35 pmDCA - YUL

Nonstop1h 50mAir Canada

Deal found 8/14

$126

Sat 9/134:35 pmDCA - YUL

Nonstop1h 50mAir Canada

Deal found 8/12

$127

Mon 9/294:20 pmIAD - YUL

1 stop3h 50mPorter Airlines

Deal found 8/12

$128

Sat 10/186:00 amDCA - YUL

Nonstop1h 49mAir Canada

Deal found 8/12

$129

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sat 10/11

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

8:55 am-3:06 pm

1 stop6h 11m

$266

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 9/12

4:20 pm-10:15 pm

1 stop5h 55m

Montreal Pierre Elliott Trudeau Intl

Fri 9/19

10:45 am-3:06 pm

1 stop4h 21m

$268

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 9/19

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

10:45 am-3:06 pm

1 stop4h 21m

$268

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Wed 9/3

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Wed 9/10

10:45 am-3:06 pm

1 stop4h 21m

$268

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 9/29

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 10/3

10:45 am-3:06 pm

1 stop4h 21m

$269

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Mon 10/13

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 10/17

10:45 am-3:06 pm

1 stop4h 21m

$269

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 9/5

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Sat 9/6

10:45 am-3:06 pm

1 stop4h 21m

$269

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Sun 9/28

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 10/3

10:45 am-3:06 pm

1 stop4h 21m

$269

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Fri 10/17

4:20 pm-8:10 pm

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 10/20

10:45 am-3:06 pm

1 stop4h 21m

$269

Washington, D.C.Montreal

IAD - YUL

IADYUL

Washington, D.C. Dulles Intl

Tue 8/26

4:10 pm-8:10 pm

1 stop4h 00m

Montreal Pierre Elliott Trudeau Intl

Sat 8/30

10:20 am-2:56 pm

1 stop4h 36m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 54 results

...

Best time to book a flight from Washington, D.C. to Montreal

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

How far ahead should I book a flight from Washington, D.C. to Montreal?

The price you pay for your flight from Washington, D.C. to Montreal may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Montreal (average of $270). Flying from Washington, D.C. to Montreal in July is currently the most expensive (average of $409). 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 WAS to YMQ?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Montreal at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the afternoon.

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

Travelers seeking maximum savings on their Washington, D.C. to Montreal flight should consider departing on Wednesday 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.

Weekly flight availability from Washington, D.C. to Montreal

The most flights from WAS to YMQ are scheduled on a Monday (16 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

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

Reviews of airlines servicing Montreal

Read reviews from past customers who have flown Porter Airlines, Delta, and United Airlines from Washington, D.C. to Montreal. 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

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

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Delta

8.0

Very good

7,980 reviews

Porter Airlines

8.0

Very good

332 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

United Airlines

7.4

Good

8,916 reviews

Porter Airlines

8.0

Very good

332 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Air Canada

7.1

Good

9,949 reviews

Porter Airlines

8.0

Very good

332 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. to Montreal round-trip?
Our cheapest airline available from Washington, D.C. to Montreal is Air Canada. Our recent data shows that you can find tickets from as low as $132 on this airline. Additional options worth looking into are United Airlines and Porter Airlines, starting at $223 and $253 round-trip. Air Canada is currently priced 66% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. to Montreal one-way?
The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as $118. However, be on the lookout for offers from Air Canada and Delta, as they are both options that can get you from Washington, D.C. to Montreal for a low price.
What are the most popular routes from Washington, D.C. to Montreal?
The most popular route from Washington, D.C. to Montreal is Washington, D.C. Reagan-National - Montreal Pierre Elliott Trudeau Intl. You may also consider Washington, D.C. Dulles Intl - Montreal Pierre Elliott Trudeau Intl or Baltimore/Washington - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from Washington, D.C. to Montreal?
The top 3 most reliable airlines when flying from Washington, D.C. to Montreal are Jazz (82%), United Airlines (80%) and Republic Airways (79%).
What are the cheapest flights from Washington, D.C. to Montreal?
Looking at all options, your cheapest flight can be booked for $137. While the most popular route (Washington, D.C. Reagan-National - Montreal Pierre Elliott Trudeau Intl) can be booked for $311 on average our data indicates $982 when flying from Washington, D.C. to Montreal.
Can I find deals for flights from Washington, D.C. to Montreal that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Montreal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Montreal.
Can I find deals for business class flights from Washington, D.C. to Montreal?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Montreal?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Montreal (average of $270). Flying from Washington, D.C. to Montreal in July is currently the most expensive (average of $409). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Washington, D.C. to Montreal

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$132	Average$366	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$212	Average$435	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$223	Average$473	FlexibilityNo cancel fee	On-time69%
Porter Airlines	Cheapest$253	Average$347	FlexibilityNo cancel fee	On-time52%
WestJet	Cheapest$356	Average$519	FlexibilityNo cancel fee	On-time60%

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$118+ Cheap flights from Washington, D.C. (WAS) 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Montreal with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. to Montreal are usually found in March or February, booked 76 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Washington, D.C. to Montreal

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Washington, D.C. to Montreal

Cheapest flights from Washington, D.C. to MontrealExplore the most affordable flight options available from Washington, D.C. to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Washington, D.C. to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Montreal that are best for you.

Best time to book a flight from Washington, D.C. to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Montreal

How far ahead should I book a flight from Washington, D.C. to Montreal?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Montreal. Price data was last updated on August 8, 2025.

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

What is the cheapest time of day to fly from WAS to YMQ?

Find hourly flight availability from Washington, D.C. 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 August 14, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Montreal. Price data was last updated on December 16, 2024.

Weekly flight availability from Washington, D.C. to Montreal

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Reviews of airlines servicing Montreal

Read reviews from past customers who have flown Porter Airlines, Delta, and United Airlines from Washington, D.C. to Montreal. 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.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Montreal. 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 Washington, D.C. to Montreal round-trip?

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

What are the most popular routes from Washington, D.C. to Montreal?

What are the most reliable airlines from Washington, D.C. to Montreal?

What are the cheapest flights from Washington, D.C. to Montreal?

Can I find deals for flights from Washington, D.C. to Montreal that include hotel bookings?

How can I find direct flights from Washington, D.C. to Montreal?

Can I find deals for business class flights from Washington, D.C. to Montreal?

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

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Alternative routes for Washington, D.C. to Montreal

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Cheapest flights from Washington, D.C. to Montreal
Explore the most affordable flight options available from Washington, D.C. to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.