AirHint found the following cheapest return flights from Jacksonville (JAX) to London (LHR) in March 2026 (see full year).
Return flights
| 14 Mar - 21 Mar | jetBlue | ||
| 12 Mar - 21 Mar | jetBlue | ||
| 18 Mar - 22 Mar | jetBlue | ||
| 12 Mar - 22 Mar | jetBlue | ||
| 14 Mar - 20 Mar | KLM | ||
| 12 Mar - 20 Mar | Delta | ||
| 12 Mar - 09 Apr | jetBlue | ||
| 13 Mar - 18 Mar | American Airlines |
Also check the deals for one-way flights from Jacksonville to London in March.
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