Cheap flights from Washington, D.C. Dulles Intl Airport to Montreal from C$ 149

The cheapest month to fly to Montreal from Washington, D.C. Dulles Intl Airport is in March. Flight prices, which tend to average around C$ 386, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Montreal from Washington, D.C. Dulles Intl Airport during July instead. Flights to Montreal in July, while not as cheap as those in March, still average around C$ 439.

Our data shows that Friday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 514. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Montreal for around C$ 973.

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to Montreal flights are usually those with departure times in the morning. Our users have found flights to Montreal in the morning for as low as C$ 537. Flights at noon are often more expensive with an average ticket price of C$ 778.

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

You are more likely to see cheaper flights to Montreal from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around C$ 483 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from Washington, D.C. Dulles Intl Airport for as low as C$ 393 on momondo.

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl to Montreal 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 22% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Montreal flight.

As of March 2026, there are 2 flights per day flying from Washington, D.C. Dulles Intl Airport to Montreal. The most common time of day flights depart is 5:00p.m., with 79% of flights taking off in the afternoon.

As of March 2026, 16 flights take off from Washington, D.C. Dulles Intl Airport and land in Montreal each week. The most common flight departure day for this route is Sat, with 56% of weekly flights taking off on this day.