Cheapest return flights from Washington to London in April from $590

Best time to book flights for Washington (DCA) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in April 2025 (see full year).

Return flights

29 Apr - 20 May British Airways
09 Apr - 20 Apr Frontier Airlines
09 Apr - 19 Apr Frontier Airlines
07 Apr - 16 Apr Air Canada
08 Apr - 15 Apr jetBlue
09 Apr - 16 Apr KLM
14 Apr - 25 Apr WestJet
09 Apr - 22 Apr jetBlue
24 Apr - 29 Apr Air Canada
19 Apr - 30 Apr Air Canada
20 Apr - 26 Apr Air Canada
25 Apr - 02 May British Airways
18 Apr - 03 May jetBlue
21 Apr - 07 May Air Canada
25 Apr - 08 May Air Canada
25 Apr - 01 May Air Canada
26 Apr - 03 May Icelandair

Also check the deals for one-way flights from Washington to London in April.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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