YXU - BOS

C$ 401 Find Cheap Flights from London to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Boston departing on 9/6. 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 Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Boston, 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 London to Boston, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 621
WestJet
Sat 23/5Sun 24/5
YXU - BOS • 1 stop
Cheapest one-way flights
C$ 401
Air Canada
Tue 9/6
YXU - BOS • 1 stop
Top airlines
WestJet
Cheapest • from C$ 621 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between London and Boston. You’ll need at least 1 connection.
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We hope you love your trip to Boston!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to Boston (YXU-BOS)

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

Sat, 23 May - Sun, 24 May
WestJet Logo
6:10 a.m. - 5:40 p.m.
YXU
-
BOS
11h 30m
1 stop
WestJet Logo
6:30 p.m. - 5:20 a.m.
BOS
-
YXU
10h 50m
1 stop
C$ 621WestJet
Sat, 23 May - Wed, 27 May
Air Canada Logo
6:10 p.m. - 10:39 p.m.
YXU
-
BOS
4h 29m
1 stop
Air Canada Logo
5:10 a.m. - 11:43 a.m.
BOS
-
YXU
6h 33m
1 stop
C$ 742Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
5:10 a.m. - 9:49 a.m.
YXU
-
BOS
4h 39m
1 stop
Air Canada Logo
5:10 a.m. - 11:43 a.m.
BOS
-
YXU
6h 33m
1 stop
C$ 743Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
5:10 a.m. - 9:49 a.m.
YXU
-
BOS
4h 39m
1 stop
Air Canada Logo
12:30 p.m. - 5:33 p.m.
BOS
-
YXU
5h 03m
1 stop
C$ 744Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
12:20 p.m. - 9:27 p.m.
YXU
-
BOS
9h 07m
2 stops
Air Canada Logo
5:10 a.m. - 11:43 a.m.
BOS
-
YXU
6h 33m
1 stop
C$ 746Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
12:20 p.m. - 9:27 p.m.
YXU
-
BOS
9h 07m
2 stops
Air Canada Logo
12:30 p.m. - 5:33 p.m.
BOS
-
YXU
5h 03m
1 stop
C$ 747Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
12:20 p.m. - 9:27 p.m.
YXU
-
BOS
9h 07m
2 stops
Air Canada Logo
5:10 a.m. - 11:43 a.m.
BOS
-
YXU
6h 33m
1 stop
C$ 748Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
5:10 a.m. - 2:47 p.m.
YXU
-
BOS
9h 37m
2 stops
Air Canada Logo
10:35 a.m. - 5:33 p.m.
BOS
-
YXU
6h 58m
2 stops
C$ 750Air Canada
Thu, 27 Aug - Sun, 30 Aug
Air Canada Logo
5:40 a.m. - 2:41 p.m.
YXU
-
BOS
9h 01m
2 stops
Air Canada Logo
3:35 p.m. - 9:40 p.m.
BOS
-
YXU
6h 05m
2 stops
C$ 751Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
5:10 a.m. - 2:47 p.m.
YXU
-
BOS
9h 37m
2 stops
Air Canada Logo
10:35 a.m. - 5:33 p.m.
BOS
-
YXU
6h 58m
2 stops
C$ 754Air Canada
Booking Insights

KAYAK's insights & trends for London to Boston flights

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

Which airlines provide the cheapest flights from London to Boston?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from London to Boston were found on WestJet (C$ 621) and Air Canada (C$ 742).

Find deals

Good to know

Cheapest flightC$ 401
Flight from London to Boston

When to book flights from London to Boston

Are your dates flexible? Find out the best times to travel from London to Boston 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 London to Boston

  • What is the cheapest flight from London to Boston?

    In the last 3 days, the lowest price for a flight from London to Boston was C$ 401 for a one-way ticket and C$ 621 for a round-trip.

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

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

  • Which airline alliances offer flights from London to Boston?

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

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

    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 London to Boston.

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

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

    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 Boston with an airline and back to London with another airline.

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

    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 Boston from London 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 London to Boston

 
See real verified KAYAK customer reviews for airlines flying from London to Boston. 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 London to Boston? 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 10982 reviews
7.3Boarding
7.8Crew
7.1Comfort
6.8Entertainment
6.3Food
Airline reviews

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

10.0 ExcellentAnonymous, Apr 2026
YYZ - EWR
Read more Air Canada reviews

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

Flight and attendance were very good we had 2 hour delay that took the shine of it

The seat design in the premium economy section leaves virtually no room under the seat to store a bag or purse. Other than that, it was a great flight. Arrived early.

The flight was delayed, but not for weather. We landed over 3hrs later than planned.

The stag were helpful, kind and liked the passengers. The plane was pristinely clean! Great flight!

My flight was delayed more than once, but Air Canada updated us regularly. Friends on other airlines had much worse experiences.

My ticket did not exist when I got to the airport. I had to book another flight and was still charged by Kayak

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

Better entertainment & food options more may be adding chicken option or on vegetarian side good quality pasta

My seat was covered in vomit and I will be reaching out to Air Canada

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

Information on your arrival and departure airports

London (YXU)
Boston (BOS)