Cheapest return flights from Washington to London in April from $564

AirHint found the following cheapest return flights from Washington (IAD) to London (STN) in April 2026 (see full year).

Return flights

01 Apr - 08 Apr Aer Lingus
22 Apr - 05 May Aer Lingus
16 Apr - 21 Apr Turkish Airlines
23 Apr - 30 Apr Turkish Airlines
05 Apr - 15 Apr Aer Lingus
28 Apr - 11 May Aer Lingus
27 Apr - 11 May Iberia
01 Apr - 21 Apr Turkish Airlines
08 Apr - 15 Apr Turkish Airlines
23 Apr - 15 May Turkish Airlines
18 Apr - 25 Apr Icelandair
11 Apr - 17 Apr Turkish Airlines
23 Apr - 04 May Turkish Airlines
24 Apr - 27 Apr Iberia
03 Apr - 06 Apr Aer Lingus
30 Apr - 03 May Turkish Airlines
23 Apr - 02 May Turkish Airlines
25 Apr - 16 May Turkish Airlines
13 Apr - 01 May Turkish Airlines

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

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