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YXU - BOS

C$ 317 Find cheap flights from London, Ontario 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 29/9. 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
0 bags
Mon 17/6
Mon 24/6

Search 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
In the last 7 days, travellers have searched 42,332,103 times on KAYAK, and here is why:

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Cheap flight deals from London to Boston (YXU-BOS)

 
These are the cheapest deals for flights from London to Boston currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to Boston.

Recent one-way flight deals from London to Boston

Only flying one-way? Below are some of the best one-way flight deals from London to Boston found on KAYAK recently.

Recent last-minute flight deals from London to Boston

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from London to Boston.

Recent direct flight deals from London to Boston

The latest deals for direct flights from London to Boston so you can sit back and relax without the need for a layover.

Cheap bus & train deals from London to Boston

Find recent round-trip train or bus tickets from London to Boston.

All round-trip flight deals to Boston

The cheapest plane tickets to Boston found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:50 a.m. - 3:09 p.m.YXU-BOS
5h 19m1 stop
4:05 p.m. - 9:37 p.m.BOS-YXU
5h 32m1 stop
C$ 590Air Canada
Find Deal
Wed, 11 Sep - Sat, 14 Sep
9:50 a.m. - 3:08 p.m.YXU-BOS
5h 18m1 stop
6:00 a.m. - 2:46 p.m.BOS-YXU
8h 46m2 stops
C$ 597Air Canada
Find Deal
Fri, 14 Jun - Sun, 16 Jun
6:00 a.m. - 2:37 p.m.YXU-BOS
8h 37m2 stops
6:00 a.m. - 2:47 p.m.BOS-YXU
8h 47m2 stops
C$ 603Air Canada
Find Deal
Wed, 11 Sep - Sat, 14 Sep
9:50 a.m. - 3:08 p.m.YXU-BOS
5h 18m1 stop
10:20 a.m. - 2:46 p.m.BOS-YXU
4h 26m1 stop
C$ 629Air Canada
Find Deal
Fri, 14 Jun - Sun, 16 Jun
9:50 a.m. - 3:08 p.m.YXU-BOS
5h 18m1 stop
7:40 p.m. - 9:15 a.m.BOS-YXU
13h 35m1 stop
C$ 646Air Canada
Find Deal
Fri, 14 Jun - Fri, 21 Jun
6:00 a.m. - 8:52 p.m.YXU-BOS
14h 52m2 stops
6:00 a.m. - 2:46 p.m.BOS-YXU
8h 46m2 stops
C$ 658
Find Deal
Fri, 14 Jun - Sun, 16 Jun
6:00 a.m. - 2:38 p.m.YXU-BOS
8h 38m2 stops
7:40 p.m. - 9:15 a.m.BOS-YXU
13h 35m1 stop
C$ 673Air Canada
Find Deal
Fri, 14 Jun - Fri, 21 Jun
9:50 a.m. - 3:08 p.m.YXU-BOS
5h 18m1 stop
10:20 a.m. - 2:46 p.m.BOS-YXU
4h 26m1 stop
C$ 844Air Canada
Find Deal
Tue, 4 Jun - Wed, 5 Jun
9:50 a.m. - 3:08 p.m.YXU-BOS
5h 18m1 stop
10:20 a.m. - 2:46 p.m.BOS-YXU
4h 26m1 stop
C$ 846Air Canada
Find Deal
Tue, 4 Jun - Wed, 5 Jun
6:15 a.m. - 9:51 a.m.YXU-BOS
27h 36m3 stops
6:30 a.m. - 5:18 a.m.BOS-YXU
22h 48m2 stops
C$ 1,167
Find Deal
Fri, 14 Jun - Sun, 16 Jun
6:20 p.m. - 10:39 p.m.YXU-BOS
4h 19m1 stop
C$ 317Air Canada
Find Deal
Sun, 29 Sep
3:25 p.m. - 10:54 p.m.YXU-BOS
7h 29m2 stops
C$ 437United Airlines
Find Deal
Sat, 1 Jun
6:00 a.m. - 2:37 p.m.YXU-BOS
8h 37m2 stops
C$ 444Air Canada
Find Deal
Sun, 29 Sep
6:15 a.m. - 1:57 p.m.YXU-BOS
31h 42m3 stops
C$ 569
Find Deal
Sat, 1 Jun

Good to know

Low season

February

High season

October

Cheapest flight

C$ 317
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (21% more expensive 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, Ontario to Boston?

    In the last 3 days, the lowest price for a flight from London, Ontario to Boston was C$ 233 for a one-way ticket and C$ 433 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.

  • Which is the best airline for flights from London to Boston, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from London to Boston are United Airlines and Air Canada. With an average price for the route of C$ 709 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 663 and an overall rating of 7.0.

  • 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 airlines 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.
7.4
United AirlinesOverall score based on 10906 reviews
7.2Comfort
7.7Boarding
6.7Food
8.1Crew
7.1Entertainment
Airline reviews

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

8.0 ExcellentAnonymous, May 2024YYZ - IAH
Read more about United Airlines reviews

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Two flights,both poor. No entertainment. Cramped and uncomfortable seats, little space, the rest was OK. Staff were acceptable good.

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

Wifi wasn't working on one of the UA flights after boarding.

Leg room was lacking. Legs crammed into seat in front.

T hey did a great job. Flight was on time .

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

Seriously need to improve the time schedule and the plans

Great TV, easy boarding, wonderful ground crew and flight crew.

Rude Customer Service at checkin, 90 minute limit in flight check in is too strict. I was in line for 30 minutes because of slow/insufficient workers. Somewhere I got to the the counter of course the employee warned me about the 90 minutes. People were cutting the lines. No one did anything.

Everything was great. I really like how they had their safety film set up showing you the beauty of the country.

I liked the early check in. Flight was a bit bumpy due yo weather. Overall, everything went well.

Limited snack options cause the snack vendor was on strike

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Book cheap flights from London to Boston

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Boston found on KAYAK in the last 72 hours.
29/9Sun
1 stopAir Canada
4h 19mYXU-BOS
C$ 317
1/6Sat
2 stopsUnited Airlines
7h 29mYXU-BOS
C$ 437
29/9Sun
2 stopsAir Canada
8h 37mYXU-BOS
C$ 444
1/6Sat
3 stops
31h 42mYXU-BOS
C$ 569

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London - Boston Flights

Departure:

London (undefined)Canada

Destination:

Boston (BOS)United States

Cabin classes: