AirHint found the following cheapest one-way flights from London (LON) to Boston (BOS) in December 2026 (see full year).
One-Way flights
| 02 Dec | Icelandair | ||
| 03 Dec | SWISS | ||
| 02 Dec | British Airways | direct | |
| 03 Dec | British Airways | direct | |
| 26 Dec | Icelandair | ||
| 21 Dec | TAP | ||
| 26 Dec | Finnair | direct | |
| 21 Dec | Finnair | direct |
Also check the deals for return flights from London to Boston in December.
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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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