Cheapest return flights from Washington to London in October from $428

AirHint found the following cheapest return flights from Washington (IAD) to London (LHR) in October 2025 (see full year).

Return flights

06 Oct - 15 Oct Scandinavian Airlines
15 Oct - 19 Nov Scandinavian Airlines
07 Oct - 14 Oct Scandinavian Airlines
16 Oct - 20 Oct Scandinavian Airlines
02 Oct - 08 Oct Scandinavian Airlines
02 Oct - 09 Oct Scandinavian Airlines
26 Oct - 30 Oct Aer Lingus
10 Oct - 12 Oct Air Canada
07 Oct - 17 Oct Aer Lingus
11 Oct - 22 Oct Air Canada
03 Oct - 06 Oct Scandinavian Airlines
15 Oct - 19 Nov British Airways direct
21 Oct - 02 Nov Aer Lingus
30 Oct - 06 Nov British Airways direct
21 Oct - 02 Nov British Airways direct
25 Oct - 01 Nov British Airways direct
30 Oct - 04 Nov Iberia direct
18 Oct - 01 Nov Iberia direct
28 Oct - 02 Nov Iberia direct
31 Oct - 08 Nov Iberia direct

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

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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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