Cheapest return flights from Washington to London in January from $556

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

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

Return flights

13 Jan - 27 Jan Icelandair
07 Jan - 18 Jan Icelandair
15 Jan - 29 Jan Icelandair
07 Jan - 20 Jan TAP
16 Jan - 30 Jan TAP
03 Jan - 17 Jan Icelandair
02 Jan - 16 Jan United
07 Jan - 18 Jan Delta direct
02 Jan - 16 Jan Virgin Atlantic direct
07 Jan - 20 Jan British Airways direct

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