Cheapest return flights from Washington to London in April from $614

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

Return flights

17 Apr - 28 Apr Icelandair
17 Apr - 28 Apr British Airways direct
18 Apr - 25 Apr Iberia direct
30 Apr - 07 May Iberia direct
29 Apr - 08 May Iberia direct
29 Apr - 06 May Iberia direct
01 Apr - 05 Apr Iberia direct
01 Apr - 08 Apr Iberia direct
01 Apr - 10 Apr Iberia direct
05 Apr - 12 Apr Iberia direct
06 Apr - 13 Apr Iberia direct
26 Apr - 11 May Iberia direct

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

Skyscanner

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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