Flights from London to Washington, D.C. from $ 541*
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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 | 03/08/26 - 03/16/26 | from $Â 541 Viewed: 7 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 03/08/26 - 03/16/26 | from $Â 690 Viewed: 7 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/26/26 - 07/05/26 | from $Â 753 Viewed: 26 minutes ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 03/29/26 - 04/08/26 | from $Â 888 Viewed: 4 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/26/26 - 07/05/26 | from $Â 902 Viewed: 26 minutes ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 06/27/26 - 07/05/26 | from $Â 931 Viewed: 25 minutes ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 03/08/26 - 03/16/26 | from $Â 960 Viewed: 7 hours ago |
| London (LHR) | Washington, D.C. (IAD) | Roundtrip | Economy | 04/22/26 - 05/03/26 | from $Â 551 Viewed: 10 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.
