Find Cheap Flights from Boston to London Heathrow (BOS - LHR)

Search hundreds of travel sites at once for deals on flights to London Heathrow

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Boston Logan International to London Heathrow Flight Information

Avg. Flight Duration 7h 00m
Flights Arrive in London Heathrow
Flights Depart from Boston Logan International
Flight Price $336
Distance 3,256 miles
Airlines Air Canada, Delta, British Airways, Icelandair, Austrian Airlines, SWISS

Good to Know

Low Season:
November
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
18%
expected price increase
Average Price:
$534
(avg. price over the last 2 weeks)
Good Deal:
$404
or less (round trip)

When to Book Flights from Boston to London Heathrow

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $404 or less.
The cheapest flight from Boston to London Heathrow was found 87 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is November.
Morning departure is around 44% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Boston to London Heathrow Flights

How long does a flight from Boston to London Heathrow take?
An average nonstop flight takes 6h 30m, covering a distance of 3256 miles.
How many flights are there between Boston and London Heathrow?
There are 350 (nonstop) flights between Boston and London Heathrow per week, averaging 52 per day.
Which airlines provide the cheapest flights from Boston to London Heathrow?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($336), Air Canada ($350) and Delta ($363).
Do I need a passport to fly between Boston and London Heathrow?
Yes.
Which airlines fly most frequently between Boston and London Heathrow?
Finnair (8 times daily), British Airways (7 times daily), American Airlines (4 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Boston to London Heathrow?
For Boston to London Heathrow, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from London Heathrow back to Boston, the best deals are generally found on Friday, with Thursday being the most expensive.

Find the Flight That Suits You Best

Thu 1/24
Thu 1/31
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Cheapest

Airline
Departure & Arrival Time
Stops
Duration
Multiple Airlines Multiple Airlines
BOS-LHR
12:00a - 12:00a
1 stop
10h 15m
BOS-LHR
$336
Travelgenio
Multiple Airlines Multiple Airlines
LHR - BOS
12:00a - 12:00a
1 stop
11h 20m
LHR - BOS
View Deal

Best

Airline
Departure & Arrival Time
Stops
Duration
Delta Delta
BOS-LHR
12:00a - 12:00a
nonstop
6h 40m
BOS-LHR
$363
Delta
Delta Delta
LHR - BOS
12:00a - 12:00a
1 stop
11h 56m
LHR - BOS
View Deal

Quickest

Airline
Departure & Arrival Time
Stops
Duration
British Airways British Airways
BOS-LHR
12:00a - 12:00a
nonstop
6h 30m
BOS-LHR
$368
British Airways British Airways
LHR - BOS
12:00a - 12:00a
nonstop
7h 20m
LHR - BOS
View Deal

Earliest

Airline
Departure & Arrival Time
Stops
Duration
Icelandair Icelandair
BOS-LHR
12:00a - 12:00a
1 stop
9h 50m
BOS-LHR
$415
KAYAK
Icelandair Icelandair
LHR - BOS
12:00a - 12:00a +1
1 stop
26h 35m
LHR - BOS
View Deal
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.