Cheapest return flights from Washington to Toronto in May from $228

Best time to book flights for Washington (IAD) to Toronto (YTZ) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Toronto (YTZ) in May 2025 (see full year).

Return flights

10 May - 18 May Porter Airlines (Canada) Ltd direct
05 May - 12 May Porter Airlines (Canada) Ltd direct
31 May - 08 Jun Porter Airlines (Canada) Ltd direct
02 May - 05 May Porter Airlines (Canada) Ltd direct
02 May - 06 May Porter Airlines (Canada) Ltd direct
06 May - 27 May Porter Airlines (Canada) Ltd direct
07 May - 28 May Porter Airlines (Canada) Ltd direct
06 May - 21 May Porter Airlines (Canada) Ltd direct
04 May - 23 May Porter Airlines (Canada) Ltd direct
13 May - 24 May Porter Airlines (Canada) Ltd direct
04 May - 24 May Porter Airlines (Canada) Ltd direct
13 May - 03 Jun Porter Airlines (Canada) Ltd direct
29 May - 03 Jun Porter Airlines (Canada) Ltd direct
29 May - 04 Jun Porter Airlines (Canada) Ltd direct
28 May - 03 Jun Porter Airlines (Canada) Ltd direct
28 May - 04 Jun Porter Airlines (Canada) Ltd direct
25 May - 03 Jun Porter Airlines (Canada) Ltd direct
25 May - 04 Jun Porter Airlines (Canada) Ltd direct
14 May - 07 Jun Porter Airlines (Canada) Ltd direct
31 May - 03 Jun Porter Airlines (Canada) Ltd direct

Also check the deals for one-way flights from Washington to Toronto in May.

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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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