AirHint found the following cheapest return flights from Edinburgh (EDI) to Boston (BOS) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	Ryanair
22 Sep - 30 Sep	easyJet
23 Sep - 28 Sep	easyJet
21 Sep - 25 Sep	Ryanair
30 Sep - 26 Oct	Ryanair
30 Sep - 08 Oct	Ryanair
22 Sep - 29 Sep	easyJet
15 Sep - 22 Sep	Ryanair
25 Sep - 06 Oct	easyJet
26 Sep - 06 Oct	easyJet
26 Sep - 07 Oct	easyJet
03 Sep - 08 Sep	Scandinavian Airlines
23 Sep - 24 Oct	easyJet
25 Sep - 26 Oct	easyJet
25 Sep - 08 Oct	easyJet
25 Sep - 05 Oct	easyJet
26 Sep - 08 Oct	easyJet
17 Sep - 26 Sep	easyJet
22 Sep - 27 Sep	easyJet
08 Sep - 15 Sep	Air France

Also check the deals for one-way flights from Edinburgh to Boston in September.

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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Cheapest return flights from Edinburgh to Boston in September from $428

Return flights