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Cheap flights from Boston to London from C$ 413

BOS — LON
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to London

Enter your travel dates to find the best prices.

Cheapest flights from Boston to London

Sun 29/115:35 p.m. -
1 stop19h 55m
Wed 16/126:40 a.m. -
1 stop14h 05m
Deal found 21/10C$ 930
Mon 16/115:35 p.m. -
2 stops17h 50m
Sun 6/126:40 a.m. -
1 stop14h 05m
Deal found 20/10C$ 940
Tue 10/116:35 p.m. -
1 stop31h 35m
Fri 13/116:00 a.m. -
1 stop19h 20m
Deal found 20/10C$ 945
Thu 5/116:25 p.m. -
1 stop21h 35m
Sat 7/119:00 a.m. -
1 stop16h 20m
Deal found 22/10C$ 955
Tue 10/119:30 a.m. -
1 stop16h 10m
Wed 11/118:05 p.m. -
1 stop29h 15m
Deal found 22/10C$ 956
Fri 6/113:30 p.m. -
1 stop10h 40m
Sun 8/116:00 a.m. -
1 stop19h 20m
Deal found 21/10C$ 959
Wed 11/116:35 p.m. -
1 stop31h 35m
Sat 14/116:00 a.m. -
1 stop19h 20m
Deal found 22/10C$ 961
Fri 4/127:33 p.m. -
1 stop10h 17m
Sun 6/129:00 a.m. -
1 stop16h 20m
Deal found 21/10C$ 962
Tue 8/125:35 p.m. -
2 stops16h 00m
Fri 22/16:40 a.m. -
1 stop14h 15m
Deal found 23/10C$ 963
Thu 3/125:35 p.m. -
2 stops41h 50m
Thu 10/126:40 a.m. -
1 stop14h 05m
Deal found 23/10C$ 965
Wed 9/125:35 p.m. -
2 stops18h 25m
Tue 15/127:30 p.m. -
1 stop25h 15m
Deal found 21/10C$ 966

Find flight deals from Boston to London

Round-trip from

C$ 924

One-way from

C$ 413

Popular in

June

Cheapest in

January

Average price

C$ 1,115

Good one-way deal

C$ 546 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 26/1-2/2
  • 3 total stops
  • 43h 50m total
  • Boston to London
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American Airlines
  • American Airlines
  • 10/12-31/12
  • Nonstop
  • 6h 40m total
  • Boston to London
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Highest demand for flights based on searches. 16% potential increase in price (C$ 280 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 50 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a one-way flight from Boston Logan Intl to London (LON).
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 10/12

7:10 p.m.-6:50 a.m.

Nonstop6h 40m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 413
Quickest round-trip

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sat 28/11

7:15 p.m.-6:50 a.m.

Nonstop6h 35m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 413

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sat 14/11

7:10 p.m.-6:55 a.m.

Nonstop6h 45m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 413

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 11/11

7:15 p.m.-6:50 a.m.

Nonstop6h 35m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 413

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sat 7/11

7:09 a.m.-9:40 p.m.

1 stop9h 31m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 419

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 11/11

6:25 p.m.-9:00 p.m.

1 stop21h 35m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 420

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 7/1

7:10 p.m.-6:50 a.m.

Nonstop6h 40m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 420

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sat 17/4

5:30 a.m.-6:30 a.m.

1 stop20h 00m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 423

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 4/12

11:35 a.m.-9:10 a.m.

2 stops16h 35m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 426

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 5/11

10:30 a.m.-10:50 a.m.

2 stops19h 20m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 426

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/10

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Boston to London

Have a flexible travel schedule? Discover the best time to fly to London from Boston with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

What is the cheapest month to book a flight from Boston to London?

Currently, January is the cheapest month in which you can book a flight from Boston to London (average of C$ 748). Flying from Boston to London in June is currently the most expensive (average of C$ 1,454). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to LON?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to London as you normally would.

How much does it cost to fly round-trip from Boston to London?

Airfare is typical for this route at the moment.
Boston to London flights typically cost between C$ 875 and C$ 1,225 in January.
The cheapest round-trip price found within the last 5 days was C$ 924 on Scandinavian Airlines (26 Jan-2 Feb).

How often are flights from Boston to London delayed?

About 12% of weekly flights between Boston and London have experienced delays in the past year, with the average delay time being 150 minutes.

What is the most punctual flight time for Boston to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to London flights?

Over the past year, American Airlines has had the lowest number of delays on this route, with just 8% of flights being delayed.

How far ahead should I book a flight from Boston to London?

The best time to book flights from Boston to London is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with British Airways from Boston to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,270 reviews
Check prices

Crew

7.7

Boarding

7.0

Entertainment

6.5

Overall

6.7

Food

6.4

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,270 reviews
British Airways
6.7
Okay
8,270 reviews
Check prices

Crew

7.7

Boarding

7.0

Entertainment

6.5

Overall

6.7

Food

6.4

Comfort

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

Related info for your journey

  • What airport do you fly from for flights from Boston to London?

    Located just 4.2 km from the city centre, Boston Logan Intl is the airport most travellers will use when flying to London from Boston. Booking flights from Logan Intl (BOS) to London should be relatively easy as there are 5 daily outbound flights to London from 0 different airlines.

  • How long is the flight from Boston to London?

    Departing from Boston to London will take you 10h 40m. The distance between Boston and London is about 5237 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Boston to London?

    Consider Gulf Air (97%), KLM (88%) or SAUDIA (88%) when booking your flight. These represent the most reliable airlines when flying from Boston to London.

  • What are the cheapest flights from Boston to London?

    On average you can expect to pay C$ 762 for a flight from Boston to London. The cheapest flight overall is C$ 759 while the most popular route, (Boston Logan Intl - London Heathrow) is currently priced at C$ 1,155.

  • Can I find deals for flights from Boston to London that include hotel bookings?

    Yes. In addition to deals on Boston to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to London.

  • Can I find deals for business class flights from Boston to London?

    Yes. Cheapflights offers flight deals from Boston to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to London?

    Currently, January is the cheapest month in which you can book a flight from Boston to London (average of C$ 748). Flying from Boston to London in June is currently the most expensive (average of C$ 1,454). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Boston to London

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