We cannot wait to welcome you to Boston with our new daily service nonstop from London Heathrow in 2022. Discover Boston’s past while enjoying its modern edge from The Freedom Trail landmarks, cobbled-stone streets and artisan markets to its lively waterfront, whale watching cruises and exquisite restaurants. Experience more space and more comfort in United Premium Plus® available on this route.
United flights from London to Boston from £ 414*
Featured daily fares for flights from London (LHR) to Boston (BOS)
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More United deals on London (LHR) to Boston (BOS) flights
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Select travel class
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 25/05/2025 - 31/05/2025 | from £ 475* Viewed: 1 day ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 25/05/2025 - 31/05/2025 | from £ 585* Viewed: 1 day ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 19/05/2025 - 26/05/2025 | from £ 414* Viewed: 9 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 26/05/2025 - 19/09/2025 | from £ 459* Viewed: 7 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 08/09/2025 - 19/09/2025 | from £ 502* Viewed: 15 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 27/06/2025 - 04/07/2025 | from £ 504* Viewed: 11 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 19/05/2025 - 26/05/2025 | from £ 524* Viewed: 9 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 05/07/2025 - 11/07/2025 | from £ 538* Viewed: 8 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 26/05/2025 - 19/09/2025 | from £ 577* Viewed: 7 hours ago |
| FromLondon (LHR) | ToBoston (BOS) | Roundtrip | Economy | 27/06/2025 - 04/07/2025 | from £ 614* Viewed: 11 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.