Cheapest return flights from Washington to London in October from $652

Best time to book flights for Washington (IAD) to London (LCY) flights at AirHint

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

Return flights

07 Oct - 17 Oct Lufthansa
01 Oct - 07 Oct SWISS
21 Oct - 31 Oct SWISS
08 Oct - 13 Oct Lufthansa
09 Oct - 12 Oct ITA Airways
12 Oct - 21 Oct KLM
08 Oct - 21 Oct KLM
10 Oct - 14 Oct KLM
10 Oct - 17 Oct British Airways
22 Oct - 29 Oct SWISS

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

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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