Cheapest one-way flights from Washington to Toronto in May from $55

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

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

One-Way flights

01 May Porter Airlines (Canada) Ltd direct
09 May Porter Airlines (Canada) Ltd direct
28 May Porter Airlines (Canada) Ltd direct
11 May Porter Airlines (Canada) Ltd direct
10 May Porter Airlines (Canada) Ltd direct
29 May Porter Airlines (Canada) Ltd direct
13 May Porter Airlines (Canada) Ltd direct
03 May Porter Airlines (Canada) Ltd direct
05 May Porter Airlines (Canada) Ltd direct
04 May Porter Airlines (Canada) Ltd direct

Also check the deals for return 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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