£150 Find Cheap Flights from Massachusetts to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 22/3. 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 London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Massachusetts to London 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 return flight deals from Massachusetts to London

Fri, 3 Apr - Sun, 12 Apr
Icelandair Logo
20:50 - 11:55
BOS
-
LHR
10h 05m
1 stop
Icelandair Logo
21:25 - 21:45
LHR
-
BOS
29h 20m
1 stop
£367Icelandair
Mon, 13 Apr - Sat, 18 Apr
Icelandair Logo
23:00 - 14:40
BOS
-
LGW
10h 40m
1 stop
Icelandair Logo
15:40 - 21:45
LGW
-
BOS
11h 05m
1 stop
£367Icelandair
Fri, 3 Apr - Sun, 5 Apr
Multiple Airlines Logo
10:40 - 06:30
BOS
-
LHR
14h 50m
1 stop
Multiple Airlines Logo
06:00 - 15:10
LHR
-
BOS
14h 10m
1 stop
£368Multiple Airlines
Mon, 6 Apr - Wed, 8 Apr
Air Canada Logo
18:40 - 10:00
BOS
-
LHR
10h 20m
1 stop
Air Canada Logo
08:40 - 21:27
LHR
-
BOS
17h 47m
2 stops
£369Air Canada
Sun, 26 Apr - Tue, 5 May
Multiple Airlines Logo
23:00 - 17:55
BOS
-
LGW
13h 55m
2 stops
Multiple Airlines Logo
19:05 - 18:50
LGW
-
BOS
28h 45m
3 stops
£372Multiple Airlines
Sun, 26 Apr - Wed, 29 Apr
Air Canada Logo
18:45 - 08:35
BOS
-
LHR
32h 50m
1 stop
Air Canada Logo
06:50 - 14:52
LHR
-
BOS
13h 02m
2 stops
£374Air Canada
Wed, 1 Apr - Wed, 8 Apr
SWISS Logo
17:20 - 08:40
BOS
-
LCY
10h 20m
1 stop
SWISS Logo
13:10 - 19:55
LCY
-
BOS
11h 45m
1 stop
£461SWISS
Wed, 1 Apr - Sat, 4 Apr
SWISS Logo
17:20 - 08:40
BOS
-
LCY
10h 20m
1 stop
SWISS Logo
09:00 - 15:10
LCY
-
BOS
11h 10m
1 stop
£465SWISS
Wed, 8 Apr - Wed, 15 Apr
Delta Logo
16:35 - 07:55
BOS
-
LCY
10h 20m
1 stop
Delta Logo
08:25 - 16:25
LCY
-
BOS
13h 00m
1 stop
£471Delta
Tue, 21 Apr - Tue, 28 Apr
Delta Logo
05:30 - 07:55
BDL
-
LCY
21h 25m
2 stops
Delta Logo
08:25 - 23:56
LCY
-
BDL
20h 31m
2 stops
£615Delta
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Flights from Massachusetts to London: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Massachusetts to London 
Learn how KAYAK collects reviews and tips from users.
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 flights from Massachusetts to London

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London 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?

    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 from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Slough
Winchester
Croydon
Stansted
Folkestone
Chichester
Maidstone
Colchester
Chelmsford
Crawley
Richmond
Bedford
Hastings
Watford

Everything you need to know for your flight to London

Cabin class types available on flights to Massachusetts

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Londonfrom £14,400
Business Class flights to Londonfrom £1,946
Premium Economy Class flights to Londonfrom £1,239
Economy class flights to Londonfrom £165