Cheapest one-way flights from Washington (IAD) to London (LHR), December

10 dates in December, from $ 302. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
1 Dec Icelandair
29 Dec Icelandair
10 Dec Icelandair
3 Dec Icelandair
27 Dec ITA Airways
15 Dec Icelandair
13 Dec Aer Lingus
11 Dec Allegiant Air
24 Dec Scandinavian Airlines
16 Dec Icelandair
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About these fares

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