Cheap flights from Montreal to Washington, D.C. from C$ 211

If you aren’t able to travel during the month of October, then book flights to Washington, D.C. from Montreal during May instead. Flights to Washington, D.C. in May, while not as cheap as those in October, still average around C$ 397.

The cheapest day to depart from Montreal to Washington, D.C. is on a Friday. Travellers who choose to depart for Washington, D.C. on a Friday will often find tickets for as low as C$ 748. The most expensive day to fly to Washington, D.C. is Sunday, with ticket prices averaging around C$ 1,161.

In the afternoon is the cheapest time of day to fly from Montreal to Washington, D.C. when you can find flight prices for as low as C$ 752. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. In the evening is when there is more demand to fly to Washington, D.C., so prices are often more expensive at around C$ 1,071 per ticket.

Fly from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl for the best Montreal - Washington, D.C. flight prices

You are more likely to see cheaper flights to Washington, D.C. from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around C$ 433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Montreal for as low as C$ 290 on momondo.

There are 4 cabin classes available to choose from on Montreal to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 7% on your flight if you consider stops on a Montreal to Washington, D.C. flight.

As of March 2026, prices for Montreal to Washington, D.C. flights are approximately 3% more expensive when compared to flights at the same time last year.

Air Canada, Delta, and Porter Airlines are the most popular carriers operating from Montreal to Washington, D.C.

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Montreal according to our data. Air Canada is the first choice among our users, with 63% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Toronto (YTZ) was the most common stop: 94% of momondo users choosing one-stop flights on this route connected there.

Flights via Toronto (YTZ) offer the lowest average round-trip price of C$ 418.

Flights connecting via Toronto (YTZ) have the shortest average one-way travel time: 4h 04m.

Toronto (YTZ) has the shortest average layover time for this route: 1h 11m.

As of March 2026, there are 13 flights per day flying from Montreal to Washington, D.C.. The most common time of day flights depart is 9:00a.m., with 39% of flights taking off at noon.

As of March 2026, there are 96 flights per week flying from Montreal to Washington, D.C.. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.