AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in April 2026 (see full year).
Return flights
| 09 Apr - 12 Apr | jetBlue | ||
| 30 Apr - 03 May | Icelandair | ||
| 01 Apr - 05 Apr | Icelandair | ||
| 03 Apr - 06 Apr | WestJet | ||
| 05 Apr - 11 Apr | WestJet | ||
| 24 Apr - 27 Apr | Icelandair |
Also check the deals for one-way flights from Washington to London in April.
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