Flights from London to Washington, D.C. from $ 555*
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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 | 01/24/26 - 02/04/26 | from $Â 555 Viewed: 3 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 01/24/26 - 02/04/26 | from $Â 702 Viewed: 3 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 01/24/26 - 02/04/26 | from $Â 970 Viewed: 3 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 02/08/26 - 02/24/26 | from $Â 837 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 02/08/26 - 02/24/26 | from $Â 984 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 02/08/26 - 02/24/26 | from $Â 1,252 Viewed: 1 day ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 12/21/25 - 01/08/26 | from $Â 1,705 Viewed: 14 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 12/19/25 - 12/21/25 | from $Â 1,709 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.
