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YXU - BOS

C$ 292 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 8/6. 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.
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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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Cheap Flight Deals 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.

Recent round-trip flight deals from London to Boston

KAYAK's recommended round-trip deals from the most popular airlines that fly from London to Boston.
Discover the best prices for you by selecting your travel dates on KAYAK.
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Air Canada Logo
9:55 a.m. - 5:57 p.m.YXU-BOS
8h 02m2 stops
Air Canada Logo
5:50 a.m. - 3:03 p.m.BOS-YXU
9h 13m2 stops
C$ 528Air Canada
Find Deal
Sat, 24 May - Sat, 31 May
Logo
3:35 p.m. - 11:29 p.m.YXU-BOS
31h 54m2 stops
Logo
6:55 p.m. - 9:00 p.m.BOS-YXU
26h 05m1 stop
C$ 583
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Sun, 8 Jun - Sun, 15 Jun
Logo
3:35 p.m. - 11:29 p.m.YXU-BOS
31h 54m2 stops
Logo
6:55 p.m. - 9:00 p.m.BOS-YXU
26h 05m1 stop
C$ 586
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Air Canada Logo
6:15 a.m. - 11:28 a.m.YXU-BOS
5h 13m1 stop
Air Canada Logo
10:40 a.m. - 2:58 p.m.BOS-YXU
4h 18m1 stop
C$ 609Air Canada
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Air Canada Logo
6:15 a.m. - 9:55 a.m.YXU-BOS
3h 40m1 stop
Air Canada Logo
10:40 a.m. - 2:58 p.m.BOS-YXU
4h 18m1 stop
C$ 615Air Canada
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Logo
3:35 p.m. - 11:29 p.m.YXU-BOS
31h 54m2 stops
Logo
6:55 p.m. - 5:14 a.m.BOS-YXU
34h 19m2 stops
C$ 618
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Air Canada Logo
5:45 p.m. - 10:38 p.m.YXU-BOS
4h 53m1 stop
Air Canada Logo
12:15 p.m. - 5:07 p.m.BOS-YXU
4h 52m1 stop
C$ 625Air Canada
Find Deal
Mon, 7 Jul - Sat, 12 Jul
United Airlines Logo
6:15 a.m. - 9:55 a.m.YXU-BOS
3h 40m1 stop
United Airlines Logo
10:40 a.m. - 5:07 p.m.BOS-YXU
6h 27m1 stop
C$ 649United Airlines
Find Deal
Mon, 30 Jun - Wed, 2 Jul
United Airlines Logo
6:15 a.m. - 1:40 p.m.YXU-BOS
7h 25m2 stops
United Airlines Logo
7:00 a.m. - 2:57 p.m.BOS-YXU
7h 57m2 stops
C$ 656United Airlines
Find Deal
Mon, 7 Jul - Sat, 12 Jul
United Airlines Logo
9:55 a.m. - 8:40 p.m.YXU-BOS
10h 45m2 stops
United Airlines Logo
6:10 a.m. - 2:57 p.m.BOS-YXU
8h 47m2 stops
C$ 658United Airlines
Find Deal
Mon, 30 Jun - Wed, 2 Jul

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.

What is the cheapest month to fly from London to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London to Boston is July, where tickets cost C$ 587 (return) on average. On the other hand, the most expensive months are January and March, where the average cost of round-trip tickets is C$ 1,228 and C$ 774 respectively.
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Good to know

Low season

March

High season

August

Cheapest flight

C$ 292
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 6% lower on average.
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$ 211 for a one-way ticket and C$ 381 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.

See more FAQs

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.
7.0
Air CanadaOverall score based on 9198 reviews
7.3Boarding
6.8Entertainment
7.8Crew
7.0Comfort
6.3Food
Airline reviews

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

10.0 ExcellentAnonymous, Apr 2025YYZ - DEN
Read more Air Canada reviews

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

Very smooth flight and the crew members were very welcoming.

If you want your flight to get delayed constantly for 13+ hours and given a 10 dollar food voucher the. I would say take air canada. Worst experience ever.

My flight was cancelled and I was left to figure out where to find a hotel, something to eat and how to get a new flight at 11:30pm. Wasted a day. Thanks, Air Canada!

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

Information on your arrival and departure airports

Boston (BOS)
London (YXU)

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