Flights from London to Washington, D.C. from $ 665*
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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 | 05/03/26 - 05/25/26 | from $ 665 Viewed: 16 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/16/26 - 05/19/26 | from $ 668 Viewed: 23 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/22/26 - 05/24/26 | from $ 730 Viewed: 21 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/01/26 - 09/01/26 | from $ 732 Viewed: 16 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 05/13/26 - 05/20/26 | from $ 765 Viewed: 8 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/30/26 - 09/01/26 | from $ 765 Viewed: 16 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 04/26/26 - 04/30/26 | from $ 776 Viewed: 21 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 04/02/26 - 04/12/26 | from $ 792 Viewed: 20 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.
