AirHint found the following cheapest one-way flights from Kansas City (MCI) to London (LHR) in December 2025 (see full year).
One-Way flights
| 29 Dec | Delta | ||
| 23 Dec | Spirit Airlines | ||
| 30 Dec | United | ||
| 27 Dec | British Airways | ||
| 26 Dec | British Airways | ||
| 21 Dec | KLM |
Also check the deals for return flights from Kansas City to London in December.
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