BOS - YXU

$655 Find Cheap Flights from Boston to London

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to London 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.
1 adult
1 adult, Economy

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
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Flights 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

Wed, Aug 6 - Sun, Aug 10
Air Canada Logo
4:35 pm - 9:27 pmBOS-YXU
4h 52m1 stop
Air Canada Logo
9:55 am - 3:55 pmYXU-BOS
6h 00m1 stop
$655Air Canada
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Wed, Aug 6 - Sun, Aug 10
Air Canada Logo
4:35 pm - 9:27 pmBOS-YXU
4h 52m1 stop
Air Canada Logo
9:55 am - 6:00 pmYXU-BOS
8h 05m2 stops
$660Air Canada
Find Deal
Wed, Aug 6 - Sun, Aug 10
Air Canada Logo
5:50 am - 3:02 pmBOS-YXU
9h 12m2 stops
Air Canada Logo
3:40 pm - 9:56 pmYXU-BOS
6h 16m2 stops
$665Air Canada
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Sat, Aug 9 - Mon, Aug 11
Logo
6:00 am - 7:09 pmBOS-YXU
37h 09m3 stops
Logo
6:00 am - 8:37 amYXU-BOS
26h 37m3 stops
$679
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Tue, Aug 12 - Tue, Aug 19
Logo
6:00 am - 7:09 pmBOS-YXU
37h 09m3 stops
Logo
8:00 pm - 11:31 amYXU-BOS
15h 31m3 stops
$691
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Sat, Aug 9 - Mon, Aug 11
Logo
6:00 am - 7:09 pmBOS-YXU
37h 09m3 stops
Logo
8:00 pm - 6:28 pmYXU-BOS
22h 28m2 stops
$708
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Tue, Aug 12 - Tue, Aug 19
United Airlines Logo
10:35 am - 3:02 pmBOS-YXU
4h 27m1 stop
United Airlines Logo
6:15 am - 11:28 amYXU-BOS
5h 13m1 stop
$783United Airlines
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Tue, Aug 12 - Tue, Aug 19
United Airlines Logo
9:40 am - 5:07 pmBOS-YXU
7h 27m2 stops
United Airlines Logo
9:55 am - 3:55 pmYXU-BOS
6h 00m1 stop
$793United Airlines
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Tue, Aug 12 - Tue, Aug 19
United Airlines Logo
8:47 am - 5:07 pmBOS-YXU
8h 20m2 stops
United Airlines Logo
9:55 am - 6:55 pmYXU-BOS
9h 00m2 stops
$808United Airlines
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Tue, Jul 15 - Thu, Jul 17
Air Canada Logo
4:35 pm - 9:27 pmBOS-YXU
4h 52m1 stop
Air Canada Logo
6:15 am - 9:55 amYXU-BOS
3h 40m1 stop
$897Air Canada
Find Deal
Useful Info

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 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boston to London were found on Air Canada ($655) and United Airlines ($783).

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Good to know

Cheapest flight$655
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 3 days, the lowest price for a flight from Boston to London was $655 for a round-trip ticket.

  • 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 9657 reviews
6.3Food
6.8Entertainment
7.3Boarding
7.8Crew
7.1Comfort
Airline reviews

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

10.0 ExcellentCatherine, Jun 2025ORD - YYZ
Read more Air Canada reviews

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Conflicting information provided about baggage allowance. One screen said I had a carry on and another said I didnt.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

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

Information on your arrival and departure airports

Boston (BOS)
London (YXU)

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