$475 Cheap United flights Boston (BOS) to London (LHR)

View $475 flight on Wed, Apr 29, 2026Opens in a new window

$475 Cheap United flights Boston (BOS) to London (LHR)

Prices were available within the past 7 days and start at $475 for one-way flights and $524 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Apr 29 - Wed, May 6
BOS
Boston
LHR
London
$524 Roundtrip, found 5 hours ago
$524
Roundtrip
found 5 hours ago
Select United flight, departing Wed, Apr 29 from Boston to London, returning Wed, May 6, priced at $524 found 5 hours ago
United
Wed, Apr 29 - Wed, May 6
BOS
Boston
LHR
London
$546 Roundtrip, found 5 hours ago
$546
Roundtrip
found 5 hours ago
Select United flight, departing Wed, Apr 29 from Boston to London, returning Wed, May 6, priced at $546 found 5 hours ago

Find the cheapest month to fly from Boston (BOS) to London (LHR)

November is typically the cheapest month to fly

From $382 - $522 per traveler.
Flights from Boston (BOS) to London (LHR)
Origin airport
Logan Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Popular airline
JetBlue Airways
Distance
5210 km
Average flight time
11 hours 39 mins