Route guide
Cheap Flights from Boston to London
Boston to London flight insights
Average flight time
6h 25m
BOS → LHR
Cheapest month
February
Based on cached fare history
Cheapest cached price
$259
Checking live fares…
Live fare checked: Aug 8, 2026
Planning a trip from Boston to London? According to live flight data on Eazair, the average flight time is 6h 25m. Live fares on Eazair currently start at $259, but historically, booking your trip in February yields the best travel deals.
Route Quick Facts
| Origin | Boston (BOS) |
|---|---|
| Destination | London (LHR) |
| Average Flight Time | 6h 25m |
| Cheapest Month to Fly | February |
| Current Lowest Fare | $259 USD |
Flight deals from Boston to London
Compare flight deals from Boston to London. We search hundreds of airlines and travel agencies to find you the best price. Fares on this route are refreshed live from our partner network, so the price you see is the price you follow through to the provider — EAZAIR never adds a fee.
Frequently asked questions
More flights from Boston
Popular alternative routes travellers compare on EAZAIR.