LHR

$294 Find Cheap Flights from Massachusetts to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Massachusetts to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Massachusetts to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Massachusetts to Heathrow

Sat, Aug 29 - Mon, Sep 7
Icelandair Logo
8:50 pm - 11:55 am
BOS
-
LHR
10h 05m
1 stop
Icelandair Logo
1:05 pm - 6:50 pm
LHR
-
BOS
10h 45m
1 stop
$683Icelandair
Thu, Oct 8 - Sat, Oct 17
LEVEL Logo
10:55 pm - 9:10 am
BOS
-
LHR
29h 15m
1 stop
LEVEL Logo
8:50 pm - 9:45 pm
LHR
-
BOS
29h 55m
1 stop
$685LEVEL
Fri, Oct 9 - Fri, Oct 16
Icelandair Logo
8:50 pm - 8:20 pm
BOS
-
LHR
18h 30m
1 stop
Icelandair Logo
9:25 pm - 6:50 pm
LHR
-
BOS
26h 25m
1 stop
$686Icelandair
Tue, Oct 6 - Tue, Oct 20
Icelandair Logo
8:50 pm - 11:55 am
BOS
-
LHR
10h 05m
1 stop
Icelandair Logo
9:25 pm - 6:50 pm
LHR
-
BOS
26h 25m
1 stop
$687Icelandair
Fri, Sep 25 - Sun, Sep 27
Scandinavian Airlines Logo
5:40 pm - 9:35 am
BOS
-
LHR
34h 55m
2 stops
Scandinavian Airlines Logo
9:05 pm - 3:35 pm
LHR
-
BOS
23h 30m
2 stops
$694Scandinavian Airlines
Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
7:25 pm - 10:50 am
ALB
-
LHR
10h 25m
1 stop
United Airlines Logo
6:50 am - 4:55 pm
LHR
-
ALB
15h 05m
2 stops
$760United Airlines
Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
6:15 am - 7:10 am
ALB
-
LHR
19h 55m
2 stops
United Airlines Logo
6:50 am - 4:55 pm
LHR
-
ALB
15h 05m
2 stops
$763United Airlines
Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
1:00 pm - 9:10 am
ALB
-
LHR
15h 10m
2 stops
United Airlines Logo
6:50 am - 4:55 pm
LHR
-
ALB
15h 05m
2 stops
$764United Airlines
Tue, Aug 25 - Sun, Aug 30
Delta Logo
6:58 pm - 1:15 pm
ALB
-
LHR
13h 17m
1 stop
Delta Logo
8:40 am - 11:57 pm
LHR
-
ALB
20h 17m
2 stops
$869Delta
Tue, Aug 25 - Sun, Aug 30
Delta Logo
6:58 pm - 1:15 pm
ALB
-
LHR
13h 17m
1 stop
Delta Logo
8:40 am - 11:16 pm
LHR
-
ALB
19h 36m
2 stops
$870Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$294
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Boston to London Heathrow Airport

Flights from Massachusetts to Heathrow: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Massachusetts to Heathrow 
Learn how KAYAK collects reviews and tips from users.
alyciaFlew with American Airlines
BOS
-
LHR
Mar 2026
Long walk between terminals in boston Don't cut connections close
MarilynFlew with British Airways
BOS
-
LHR
Feb 2026
Meeting a friend at Heathrow was difficult as there are many terminals so far apart. Access to the train was great and an easy way to get to the downtown area.
Verified travelerFlew with British Airways
BOS
-
LHR
Jan 2024
Leave plenty of time if connecting in London as most connecting flights are in a different terminal which requires a bus or tram ride. Also if you’re not at the gate 30 minutes ahead they will not let you on the plane. Apparently this is a Heathrow not airline rule.

FAQs for booking Massachusetts to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from Massachusetts to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Massachusetts to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Massachusetts with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Hounslow
Slough
Hayes
Wembley
Richmond
Luton
Salisbury
Crawley
Watford
Ilford
Eastbourne
Bedford
Swindon
Guildford
Colchester
Ipswich
Northampton
Kingston upon Thames
Twickenham
St. Albans

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

London Heathrow Airport (LHR)