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Cheap flights from Boston to London from C$ 406

BOS — LON
11 Oct — 18 Oct1
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

Tue 22/95:10 p.m. -
1 stop11h 15m
Tue 26/110:00 a.m. -
2 stops17h 26m
Deal found 11/9C$ 962
Tue 13/105:40 p.m. -
2 stops15h 55m
Mon 19/107:05 a.m. -
2 stops13h 30m
Deal found 11/9C$ 963
Thu 15/105:50 p.m. -
2 stops14h 05m
Mon 19/107:05 a.m. -
2 stops13h 30m
Deal found 10/9C$ 964
Wed 7/1010:55 p.m. -
1 stop10h 50m
Wed 14/105:25 p.m. -
1 stop32h 40m
Deal found 11/9C$ 966
Sun 11/105:40 p.m. -
2 stops17h 45m
Fri 16/109:05 p.m. -
2 stops23h 30m
Deal found 11/9C$ 967
Sun 8/111:35 p.m. -
2 stops21h 10m
Thu 26/1110:00 a.m. -
2 stops15h 32m
Deal found 11/9C$ 967
Wed 11/1111:55 a.m. -
2 stops16h 05m
Tue 17/1110:00 a.m. -
2 stops17h 55m
Deal found 11/9C$ 968
Sun 4/109:40 p.m. -
1 stop29h 15m
Wed 7/107:25 a.m. -
1 stop15h 15m
Deal found 10/9C$ 970
Thu 15/105:50 p.m. -
1 stop10h 30m
Fri 30/107:30 p.m. -
1 stop25h 15m
Deal found 11/9C$ 971
Mon 28/127:10 p.m. -
Nonstop6h 40m
Thu 14/19:40 a.m. -
Nonstop7h 47m
Deal found 10/9C$ 973
Wed 7/108:25 p.m. -
1 stop9h 20m
Thu 15/109:40 a.m. -
Nonstop7h 41m
Deal found 11/9C$ 974
Wed 7/1010:55 p.m. -
1 stop10h 50m
Thu 15/101:35 p.m. -
1 stop12h 30m
Deal found 11/9C$ 974

Find flight deals from Boston to London

Round-trip from

C$ 962

One-way from

C$ 406

Popular in

June

Cheapest in

January

Average price

C$ 1,028
Virgin Atlantic
  • Virgin Atlantic
  • 22/9-26/1
  • 3 total stops
  • 28h 41m total
  • Boston to London
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British Airways
  • British Airways
  • 22/10-31/12
  • Nonstop
  • 6h 45m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 326 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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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

Fri 6/11

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$ 409

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 27/11

6:45 p.m.-6:25 a.m.

Nonstop6h 40m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 409
Quickest round-trip

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 28/10

8:15 p.m.-6:50 a.m.

Nonstop6h 35m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 409

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sun 8/11

8:00 p.m.-7:50 a.m.

Nonstop6h 50m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 409

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 22/10

9:51 a.m.-6:55 a.m.

2 stops16h 04m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 414

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sun 11/10

10:51 a.m.-6:55 a.m.

2 stops15h 04m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 414

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 31/12

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$ 414

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 1/10

10:51 a.m.-6:45 a.m.

2 stops14h 54m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 414

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 8/10

12:45 p.m.-6:30 a.m.

2 stops12h 45m

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

Tue 5/1

6:00 a.m.-6:40 a.m.

2 stops19h 40m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 420

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 46 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$ 730). Flying from Boston to London in June is currently the most expensive (average of C$ 1,423). 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.

Weekly flight availability from Boston to London

The most flights from BOS to LON are scheduled on a Monday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 on average).

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$ 754 and C$ 1,136 in September.
The cheapest round-trip price found within the last 5 days was C$ 962 on Virgin Atlantic (22 Sep-26 Jan).

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 146 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?

Saturday 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 9% 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 76 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
8,212 reviews
Check prices

Food

6.4

Boarding

7.0

Comfort

6.8

Crew

7.7

Entertainment

6.5

Overall

6.7

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
8,212 reviews
British Airways
6.7
Okay
8,212 reviews
Check prices

Food

6.4

Boarding

7.0

Comfort

6.8

Crew

7.7

Entertainment

6.5

Overall

6.7

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 29 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 6h 35m. 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 (93%), SAUDIA (86%) or KLM (83%) when booking your flight. These represent the most reliable airlines when flying from Boston to London.

  • 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$ 730). Flying from Boston to London in June is currently the most expensive (average of C$ 1,423). 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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