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

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

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

Return flights

16 Jan - 19 Jan Scandinavian Airlines
20 Jan - 27 Jan Scandinavian Airlines
01 Jan - 08 Jan SWISS
08 Jan - 15 Jan SWISS
21 Jan - 24 Jan SWISS
08 Jan - 15 Jan British Airways direct
20 Jan - 27 Jan Finnair direct
01 Jan - 08 Jan British Airways direct
16 Jan - 19 Jan American Airlines direct
21 Jan - 24 Jan Austrian Airlines direct

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

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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