AirHint found the following cheapest return flights from Fresno (FAT) to London (LHR) in December 2025 (see full year).
Return flights
| 03 Dec - 12 Dec | Delta | ||
| 01 Dec - 14 Dec | American Airlines | ||
| 03 Dec - 27 Dec | Iberia | ||
| 25 Dec - 29 Dec | United | ||
| 16 Dec - 30 Dec | British Airways | ||
| 20 Dec - 27 Dec | Allegiant Air | ||
| 20 Dec - 03 Jan | Allegiant Air |
Also check the deals for one-way flights from Fresno to London in December.
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