Cheapest return flights from Washington to Toronto in May from $220

AirHint found the following cheapest return flights from Washington (IAD) to Toronto (YTZ) in May 2026 (see full year).

Return flights

01 May - 06 May Porter Airlines (Canada) Ltd direct
01 May - 04 May Porter Airlines (Canada) Ltd direct
07 May - 11 May Porter Airlines (Canada) Ltd direct
01 May - 03 May Porter Airlines (Canada) Ltd direct
30 May - 01 Jun Porter Airlines (Canada) Ltd direct
08 May - 12 May Porter Airlines (Canada) Ltd direct
08 May - 10 May Porter Airlines (Canada) Ltd direct
06 May - 20 May Porter Airlines (Canada) Ltd direct
06 May - 13 May Porter Airlines (Canada) Ltd direct
09 May - 28 May Porter Airlines (Canada) Ltd direct
09 May - 20 May Porter Airlines (Canada) Ltd direct
24 May - 04 Jun Porter Airlines (Canada) Ltd direct
24 May - 03 Jun Porter Airlines (Canada) Ltd direct
19 May - 04 Jun Porter Airlines (Canada) Ltd direct
19 May - 03 Jun Porter Airlines (Canada) Ltd direct
15 May - 04 Jun Porter Airlines (Canada) Ltd direct
15 May - 03 Jun Porter Airlines (Canada) Ltd direct
16 May - 04 Jun Porter Airlines (Canada) Ltd direct
16 May - 03 Jun Porter Airlines (Canada) Ltd direct
29 May - 04 Jun Porter Airlines (Canada) Ltd direct

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

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