Cheapest one-way flights from Boston to Toronto in September from 149€

Best time to book flights for Boston (BOS) to Toronto (YYZ) flights at AirHint

AirHint found the following cheapest one-way flights from Boston (BOS) to Toronto (YYZ) in September 2025 (see full year).

One-Way flights

18 Sep WestJet
08 Sep WestJet
20 Sep jetBlue
19 Sep Porter Airlines (Canada) Ltd
21 Sep jetBlue
27 Sep WestJet
03 Sep Delta
08 Sep Air Canada direct
19 Sep Air Canada direct
18 Sep Air Canada direct

Also check the deals for return flights from Boston to Toronto in September.

Skyscanner

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.

Book a cheap hotel in Toronto

Cheap car rent in Toronto