Cheap flights from Washington, D.C. Reagan-National Airport to Calgary from C$ 128

The cheapest month to fly to Calgary from Washington, D.C. Reagan-National Airport is in May. Flight prices, which tend to average around C$ 426, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Calgary from Washington, D.C. Reagan-National Airport during April instead. Flights to Calgary in April, while not as cheap as those in May, still average around C$ 428.

The cheapest day to depart on your flight to Calgary is on a Tuesday when prices can be found for as low as C$ 92. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Washington, D.C. Reagan-National Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 971.

Our data shows that the cheapest Washington, D.C. Reagan-National Airport to Calgary flights are usually those with departure times in the afternoon. Our users have found flights to Calgary in the afternoon for as low as C$ 410. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 972 on average. Flights to Calgary from Washington, D.C. Reagan-National Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

You are more likely to see cheaper flights to Calgary from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around C$ 573 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from Washington, D.C. Reagan-National Airport for as low as C$ 263 on momondo.

You could potentially save up to 39% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Calgary flight.

As of February 2026, prices for Washington, D.C. Reagan-National Airport to Calgary flights are approximately 45% more expensive when compared to flights at the same time last year.