AirHint found the following cheapest return flights from Washington (IAD) to Calgary (YYC) in April 2026 (see full year).

Return flights

28 Apr - 02 May	United
07 Apr - 13 Apr	Delta
04 Apr - 10 Apr	Porter Airlines (Canada) Ltd
05 Apr - 13 Apr	United
04 Apr - 06 Apr	Porter Airlines (Canada) Ltd
06 Apr - 13 Apr	United
05 Apr - 12 Apr	United
06 Apr - 12 Apr	United

Also check the deals for one-way flights from Washington to Calgary in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to Calgary in April from 372€

Return flights