Cheapest one-way flights from Washington to London in December from 302€

AirHint found the following cheapest one-way flights from Washington (IAD) to London (LHR) in December 2026 (see full year).

One-Way flights

06 Dec TAP
28 Dec TAP
06 Dec Lufthansa direct
28 Dec United direct
16 Dec TAP
16 Dec British Airways direct
19 Dec British Airways direct

Also check the deals for return flights from Washington to London in December.

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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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