Cheapest return BWI–YYZ flights, May

AirHint found the following cheapest return flights from Baltimore (BWI) to Toronto (YYZ) in May 2026 (see full year).

Return flights

29 May - 07 Jun Frontier Airlines
26 May - 29 May Frontier Airlines
27 May - 03 Jun Frontier Airlines
27 May - 31 May Frontier Airlines
27 May - 01 Jun Frontier Airlines
25 May - 01 Jun Delta
26 May - 31 May Frontier Airlines
26 May - 28 May Frontier Airlines
27 May - 02 Jun Frontier Airlines
27 May - 28 May Frontier Airlines
28 May - 02 Jun Frontier Airlines
26 May - 27 May Frontier Airlines
30 May - 02 Jun Frontier Airlines
29 May - 29 May Delta
27 May - 29 May Frontier Airlines
29 May - 31 May Delta
25 May - 31 May Delta
28 May - 01 Jun Frontier Airlines
30 May - 01 Jun Frontier Airlines
25 May - 02 Jun Frontier Airlines

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

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