Flights London → Boston — September 12, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Saturday, September 12, 2026 on the London–Boston route: 2 stops itinerary (3 flights) via Chicago O'Hare (ORD) and Toronto (YYZ), from London Heathrow (LHR) to Boston Logan (BOS), first flight United Airlines UA5357, departs 2:10 PM, arrives 9:05 AM the next day, total travel time 23h 55m including layovers, flight time 12h 36m (layovers excluded), $1,057 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes allowed for a fee, non-refundable. Price found in an Aviasales search on September 10, 2026 and read by AirSource on September 10, 2026, 19:03 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: JetBlue B61621, from London Heathrow (LHR) to Boston Logan (BOS), departs 8:40 AM, arrives 11:19 AM, direct, 7h 39m, $1,280 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.