Cheapest return flights from Boston to Toronto in May from $320
AirHint found the following cheapest return flights from Boston (BOS) to Toronto (YYZ)
in May 2026 (see full year ).
Return flights
25 May
- 28 May
Porter Airlines (Canada) Ltd
$ 320
29 May
- 01 Jun
Porter Airlines (Canada) Ltd
$ 320
31 May
- 09 Jun
Porter Airlines (Canada) Ltd
$ 322
10 May
- 28 May
Porter Airlines (Canada) Ltd
$ 332
10 May
- 21 May
Porter Airlines (Canada) Ltd
$ 332
19 May
- 28 May
Porter Airlines (Canada) Ltd
$ 332
19 May
- 21 May
Porter Airlines (Canada) Ltd
$ 332
07 May
- 28 May
Porter Airlines (Canada) Ltd
$ 339
07 May
- 21 May
Porter Airlines (Canada) Ltd
$ 339
21 May
- 24 May
Porter Airlines (Canada) Ltd
$ 340
21 May
- 23 May
Porter Airlines (Canada) Ltd
$ 342
10 May
- 20 May
Porter Airlines (Canada) Ltd
$ 344
20 May
- 01 Jun
Porter Airlines (Canada) Ltd
$ 346
25 May
- 11 Jun
Porter Airlines (Canada) Ltd
$ 358
25 May
- 07 Jun
Porter Airlines (Canada) Ltd
$ 358
25 May
- 06 Jun
Porter Airlines (Canada) Ltd
$ 358
25 May
- 08 Jun
Porter Airlines (Canada) Ltd
$ 363
25 May
- 12 Jun
Porter Airlines (Canada) Ltd
$ 363
19 May
- 07 Jun
Porter Airlines (Canada) Ltd
$ 370
19 May
- 06 Jun
Porter Airlines (Canada) Ltd
$ 370
Also check the deals for one-way flights from Boston to Toronto in May .
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