Cheapest return flights from Boston to Frankfurt in December from $761

Best time to book flights for Boston (BOS) to Frankfurt (FRA) flights at AirHint

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

Return flights

01 Dec - 08 Dec Icelandair
11 Dec - 18 Dec Icelandair
15 Dec - 01 Jan Fly Play
01 Dec - 08 Dec Lufthansa direct
19 Dec - 23 Dec Icelandair
19 Dec - 24 Dec TAP
20 Dec - 07 Jan TAP
31 Dec - 07 Jan Icelandair
31 Dec - 07 Jan Lufthansa direct
21 Dec - 28 Dec United
19 Dec - 03 Jan Condor
19 Dec - 23 Dec United direct
15 Dec - 01 Jan Lufthansa direct
20 Dec - 07 Jan Lufthansa direct

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

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 Frankfurt

Cheap car rent in Frankfurt