AirHint found the following cheapest return flights from Glasgow (GLA) to Boston (BOS) in December 2025 (see full year).

Return flights

16 Dec - 30 Dec	Ryanair
23 Dec - 03 Jan	easyJet
05 Dec - 12 Dec	Ryanair
07 Dec - 12 Dec	Ryanair
04 Dec - 10 Dec	Ryanair
14 Dec - 01 Jan	Ryanair
26 Dec - 30 Dec	Aer Lingus
04 Dec - 09 Dec	Ryanair
04 Dec - 11 Dec	easyJet
17 Dec - 15 Jan	easyJet
10 Dec - 15 Dec	Wizz Air Malta
16 Dec - 29 Dec	Air France
07 Dec - 14 Dec	Ryanair
22 Dec - 04 Jan	Ryanair
13 Dec - 02 Jan	Ryanair
20 Dec - 02 Jan	Ryanair
17 Dec - 01 Jan	easyJet
20 Dec - 03 Jan	Ryanair
22 Dec - 02 Jan	Jet2
29 Dec - 02 Jan	easyJet

Also check the deals for one-way flights from Glasgow to Boston in December.

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 Glasgow to Boston in December from $651

Return flights