AirHint found the following cheapest return flights from Washington (DCA) to Calgary (YYC) in October 2025 (see full year).

Return flights

21 Oct - 28 Oct	United
24 Oct - 31 Oct	United
31 Oct - 03 Nov	United
25 Oct - 01 Nov	United
27 Oct - 03 Nov	United
28 Oct - 04 Nov	United
29 Oct - 05 Nov	United
22 Oct - 29 Oct	United
30 Oct - 06 Nov	United
25 Oct - 29 Oct	United
18 Oct - 22 Oct	Delta
20 Oct - 25 Oct	Delta
21 Oct - 24 Oct	Delta
31 Oct - 07 Nov	United
26 Oct - 02 Nov	United
04 Oct - 11 Oct	United
07 Oct - 14 Oct	United
14 Oct - 21 Oct	United

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

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 October from 187€

Return flights