Flights from London to Washington, D.C. from $ 778*
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1 Passenger, Economy
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Featured daily fares for flights from London (LHR) to Washington, D.C. (IAD)
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More United deals on London (LHR) to Washington, D.C. (IAD) flights
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/21/26 - 05/26/26 | from $ 821 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/11/26 - 06/21/26 | from $ 861 Viewed: 13 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/22/26 - 05/24/26 | from $ 866 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 04/19/26 - 04/21/26 | from $ 972 Viewed: 23 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/21/26 - 05/26/26 | from $ 973 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/11/26 - 06/21/26 | from $ 1,013 Viewed: 13 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 09/01/26 - 10/08/26 | from $ 778 Viewed: 4 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 09/01/26 - 10/08/26 | from $ 930 Viewed: 4 hours ago |
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
