BOS - YXU

$263 Find Cheap Flights from Boston 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 from Boston to London departing on 9/22. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to London, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$591
WestJet
Sat 7/11Sat 7/25
BOS - YXU • 1 stop
Cheapest one-way
$263
WestJet
Tue 9/22
BOS - YXU • 1 stop
Top airlines
WestJet
Cheapest • from $591 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and London. You'll need at least 1 connection.
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We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to London (BOS-YXU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston 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 round-trip flight deals from Boston to London

Sat, Jul 11 - Sat, Jul 25
WestJet Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 10:20 pm
YXU
-
BOS
16h 10m
1 stop
$591WestJet
Mon, Jul 13 - Mon, Jul 20
WestJet Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 10:20 pm
YXU
-
BOS
16h 10m
1 stop
$600WestJet
Thu, Jul 9 - Mon, Jul 13
WestJet Logo
7:25 am - 7:50 pm
BOS
-
YXU
12h 25m
1 stop
WestJet Logo
6:10 am - 5:40 pm
YXU
-
BOS
11h 30m
1 stop
$620WestJet
Wed, Jul 15 - Wed, Jul 22
WestJet Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 5:40 pm
YXU
-
BOS
11h 30m
1 stop
$677WestJet
Sat, Jul 11 - Sat, Jul 25
Multiple Airlines Logo
8:10 pm - 1:50 pm
BOS
-
YXU
17h 40m
2 stops
Multiple Airlines Logo
6:10 am - 10:20 pm
YXU
-
BOS
16h 10m
1 stop
$678Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
WestJet Logo
6:30 pm - 4:45 pm
BOS
-
YXU
22h 15m
1 stop
WestJet Logo
6:10 am - 5:40 pm
YXU
-
BOS
11h 30m
1 stop
$680WestJet
Fri, Sep 4 - Mon, Sep 7
Air Canada Logo
5:00 pm - 9:40 pm
BOS
-
YXU
4h 40m
1 stop
Air Canada Logo
5:40 am - 9:53 am
YXU
-
BOS
4h 13m
1 stop
$693Air Canada
Tue, Jul 28 - Wed, Aug 5
Multiple Airlines Logo
6:30 pm - 5:20 am
BOS
-
YXU
10h 50m
1 stop
Multiple Airlines Logo
6:10 am - 4:00 pm
YXU
-
BOS
33h 50m
2 stops
$696Multiple Airlines
Fri, Sep 4 - Mon, Sep 7
Air Canada Logo
10:50 am - 2:55 pm
BOS
-
YXU
4h 05m
1 stop
Air Canada Logo
10:05 am - 6:07 pm
YXU
-
BOS
8h 02m
2 stops
$701Air Canada
Mon, Jul 13 - Mon, Jul 20
Multiple Airlines Logo
8:10 pm - 1:50 pm
BOS
-
YXU
17h 40m
2 stops
Multiple Airlines Logo
6:10 am - 5:40 pm
YXU
-
BOS
11h 30m
1 stop
$710Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to London flights

Get data-powered insights and trends into flights from Boston to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Boston to London?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Boston to London were found on WestJet ($591) and Air Canada ($693).

Find deals

Good to know

Cheapest flight$263
Flight from Boston to London

When to book flights from Boston to London

Are your dates flexible? Find out the best times to travel from Boston to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to London

  • What is the cheapest flight from Boston to London?

    In the last 5 days, the lowest price for a flight from Boston to London was $263 for a one-way ticket and $591 for a round-trip.

  • Do I need a passport to fly between Boston and London?

    Yes

  • Which airports will I be using when flying from Boston to London?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at London, also known as London.

  • Which aircraft models fly most regularly from Boston to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to London?

    Star Alliance is the only airline alliance operating flights between Boston and London.

  • How does KAYAK find such low prices on flights from Boston 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 Boston to London.

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

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

    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 with an airline and back to Boston with another airline. Booking your flights between Boston and YXU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston 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 Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to London

 
See real verified KAYAK customer reviews for airlines flying from Boston to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 11122 reviews
7.1Comfort
6.3Food
7.3Boarding
6.8Entertainment
7.8Crew
Airline reviews

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

4.0 OkayDean, May 2026
MCO - YYZ
Read more Air Canada reviews

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

They did not let us board because one member needed a transit visa, which was not evident at the time of ticket purchase.

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

Everything you need to know for your flight from Boston to London

Information on your arrival and departure airports

Boston (BOS)
London (YXU)