Cheap flights from London to Boston
Flights from London to Boston currently start at €374. Below are the cheapest dates, typical duration and airlines on this route. Search live fares when you are ready to book — prices change during the day.
Prices refresh daily · per adult · Typical time: 9h 5m
Key facts
- Lowest fare
- €374 · Tue 15 Dec
- Direct flights
- No, with connections only
- Flight time
- 9h 5m
- Airlines
- Icelandair, American Airlines, Aer Lingus, Ryanair
- Cheapest month
- December 2026
- Distance
- 5261 km
Round trip
One way
Questions people ask before they book
How much are flights from London to Boston?
The lowest fare we currently show from London to Boston is €374 for one adult. That price is tied to specific dates and can sell out.
Are there direct flights from London to Boston?
Current cheap fares from London to Boston include a connection. Search live results and filter by Direct in case a nonstop seat opens up.
Which airlines fly from London to Boston?
Airlines showing fares on this route include Icelandair, American Airlines, Aer Lingus, Ryanair. The cheapest airline is not always the one with a bag included.
How long is the flight from London to Boston?
A typical itinerary from London to Boston takes about 9h 5m, including connections when the cheapest fare is not direct.
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December 2026