Flights from London to Washington, D.C. from $ 691*
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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 | 06/01/26 - 06/04/26 | from $ 800 Viewed: 2 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 08/04/26 - 11/02/26 | from $ 801 Viewed: 32 minutes ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/03/26 - 08/12/26 | from $ 798 Viewed: 16 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/22/26 - 06/26/26 | from $ 843 Viewed: 6 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/27/26 - 07/07/26 | from $ 877 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 09/22/26 - 10/06/26 | from $ 691 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 09/15/26 - 09/29/26 | from $ 691 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/06/26 - 06/24/26 | from $ 818 Viewed: 1 day 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.
