AirHint found the following cheapest return flights from Louisville (SDF) to London (LHR) in May 2026 (see full year).
Return flights
| 10 May - 21 May | British Airways | ||
| 11 May - 28 May | American Airlines | ||
| 12 May - 28 May | American Airlines | ||
| 20 May - 03 Jun | British Airways | ||
| 08 May - 26 May | American Airlines | ||
| 07 May - 26 May | American Airlines |
Also check the deals for one-way flights from Louisville to London in May.
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