Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Boston to London from C$ 304

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LON
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to London are usually found in October or September, booked 71 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Boston to London

Enter your travel dates to find the best prices.

Cheapest flights from Boston to London
Explore the most affordable flight options available from Boston to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Sat 18/46:10 p.m.
BOS
-
LHR
1 stop11h 15m
United Airlines
Mon 20/48:40 a.m.
LHR
-
BOS
1 stop16h 15m
United Airlines
Deal found 26/1C$ 689
Wed 22/48:05 p.m.
BOS
-
LHR
1 stop16h 00m
United Airlines
Fri 24/412:40 p.m.
LHR
-
BOS
1 stop10h 05m
United Airlines
Deal found 25/1C$ 693
Mon 9/26:40 p.m.
BOS
-
LHR
1 stop20h 55m
United Airlines
Wed 18/21:45 p.m.
LHR
-
BOS
1 stop11h 35m
United Airlines
Deal found 26/1C$ 694
Wed 11/26:40 p.m.
BOS
-
LHR
1 stop20h 55m
United Airlines
Mon 16/22:50 p.m.
LHR
-
BOS
1 stop28h 15m
United Airlines
Deal found 26/1C$ 697
Tue 10/23:35 p.m.
BOS
-
LHR
1 stop10h 35m
United Airlines
Wed 18/21:45 p.m.
LHR
-
BOS
1 stop11h 35m
United Airlines
Deal found 26/1C$ 698
Thu 12/29:45 a.m.
BOS
-
LHR
1 stop15h 10m
United Airlines
Wed 4/39:00 a.m.
LHR
-
BOS
1 stop16h 20m
United Airlines
Deal found 26/1C$ 700
Mon 26/17:28 p.m.
BOS
-
LHR
1 stop9h 57m
United Airlines
Fri 30/112:05 p.m.
LHR
-
BOS
1 stop12h 55m
United Airlines
Deal found 26/1C$ 701
Thu 29/13:40 p.m.
BOS
-
LHR
1 stop10h 30m
United Airlines
Wed 4/21:45 p.m.
LHR
-
BOS
1 stop11h 35m
United Airlines
Deal found 27/1C$ 702
Thu 5/312:07 p.m.
BOS
-
LHR
2 stops14h 48m
United Airlines
Mon 9/39:00 a.m.
LHR
-
BOS
1 stop16h 00m
United Airlines
Deal found 27/1C$ 704
Thu 12/29:45 a.m.
BOS
-
LHR
1 stop15h 10m
United Airlines
Thu 19/29:00 a.m.
LHR
-
BOS
2 stops35h 12m
United Airlines
Deal found 26/1C$ 705
Wed 11/26:00 a.m.
BOS
-
LHR
1 stop10h 20m
United Airlines
Tue 24/311:10 a.m.
LHR
-
BOS
1 stop12h 25m
United Airlines
Deal found 27/1C$ 707
Tue 17/28:00 p.m.
BOS
-
LHR
Nonstop6h 50m
Multiple Airlines
Tue 3/36:20 a.m.
LHR
-
BOS
1 stop12h 10m
Multiple Airlines
Deal found 26/1C$ 708

Find flight deals from Boston to London

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 January 2026.

Round-trip from

C$ 689

One-way from

C$ 304

Popular in

June

Cheapest in

October

Average price

C$ 774

Good round-trip deal

C$ 752 or less

Good one-way deal

C$ 672 or less
United Airlines
  • United Airlines
  • 18/4-20/4
  • 2 total stops
  • 27h 30m total
  • Boston to London
Search Deals
SWISS
  • SWISS
  • 22/2
  • 1 total stop
  • 13h 10m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 January 2026.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Boston

Fly to

London

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 10/2

3:35 p.m.-7:10 a.m.

1 stop10h 35m

London Heathrow

Wed 18/2

1:45 p.m.-8:20 p.m.

1 stop11h 35m

C$ 698

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 24/2

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

Nonstop6h 50m

London Heathrow

Tue 10/3

6:20 a.m.-2:30 p.m.

1 stop12h 10m

C$ 708

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 12/2

6:00 a.m.-5:55 a.m.

1 stop18h 55m

London Heathrow

Sun 15/2

9:00 a.m.-5:21 p.m.

2 stops37h 21m

C$ 709

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 5/3

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

Nonstop6h 50m

London Heathrow

Sun 8/3

6:30 a.m.-1:20 p.m.

1 stop11h 50m

C$ 711

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

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

Nonstop6h 50m

London Heathrow

Mon 16/2

6:30 a.m.-1:25 p.m.

1 stop11h 55m

C$ 713

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 9/2

7:50 p.m.-10:55 a.m.

1 stop10h 05m

London Gatwick

Tue 24/3

11:55 a.m.-11:35 a.m.

1 stop27h 40m

C$ 716

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

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

Nonstop6h 50m

London Heathrow

Mon 16/2

6:30 a.m.-1:25 p.m.

1 stop11h 55m

C$ 716

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 26/3

6:40 p.m.-8:35 p.m.

1 stop21h 55m

London Heathrow

Fri 3/4

1:50 p.m.-3:30 p.m.

1 stop30h 40m

C$ 716

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 19/2

7:12 p.m.-6:55 a.m.

Nonstop6h 43m

London Heathrow

Fri 6/3

9:20 a.m.-12:15 p.m.

Nonstop7h 55m

C$ 718

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/5

6:50 p.m.-10:00 a.m.

1 stop10h 10m

London Heathrow

Wed 6/5

12:10 p.m.-7:55 p.m.

1 stop12h 45m

C$ 720

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Showing 1-10 of 44 results
1
2
3
...
5

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to London. Price data was last updated on 23 January 2026.

The best time to book flights from Boston to London is 71 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.

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

Currently, August is the cheapest month in which you can book a flight from Boston to London (average of C$ 426). Flying from Boston to London in June is currently the most expensive (average of C$ 768). 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?

Find hourly flight availability from Boston to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 January 2026.

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

Explore weekly flight availability from Boston to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 27 January 2026.

The most flights from BOS to LON are scheduled on a Monday (32 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (22 on average).

What’s the top layover airport for flights from Boston to London?

Share of one-stop round-trip flights from Boston to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 67% of one-stop itineraries from Boston to London on Cheapflights.

What’s the cheapest layover airport for flights from Boston to London?

Average round-trip fare for 1-stop flights from Boston to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of C$ 614.

What’s the fastest layover option from Boston to London?

Shortest average travel time for 1-stop one-way flights from Boston to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Zurich (ZRH) have the shortest average one-way travel time for 1-stop routes: 9h 50m.

Which airport typically offers the quickest layover for flights from Boston to London?

Average layover duration for 1-stop one-way flights from Boston to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 1h 03m.

How often are flights from Boston to London delayed?

About 11% of weekly flights between Boston and London have experienced delays in the past year, with the average delay time being 142 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?

Wednesday 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, Virgin Atlantic has had the lowest number of delays on this route, with just 7% of flights being delayed.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 27 January 2026.
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
7,702 reviews
Check prices

Crew

7.6

Food

6.4

Comfort

6.8

Overall

6.7

Boarding

6.9

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,702 reviews
British Airways
6.7
Okay
7,702 reviews
Check prices

Crew

7.6

Food

6.4

Comfort

6.8

Overall

6.7

Boarding

6.9

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Boston to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 28 daily outbound flights to London from 1 airline.

  • How long is the flight from Boston to London?

    Departing from Boston to London will take you 6h 50m. 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 is the cheapest airline to fly from Boston to London round-trip?

    Currently priced at C$ 600, British Airways will fly you from Boston to London and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is 28% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Consider Malaysia Airlines (94%), Gulf Air (88%) or American Airlines (84%) 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$ 816 for a flight from Boston to London. The cheapest flight overall is C$ 593 while the most popular route, (Boston Logan Intl - London Gatwick) is currently priced at C$ 752.

  • 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, August is the cheapest month in which you can book a flight from Boston to London (average of C$ 426). Flying from Boston to London in June is currently the most expensive (average of C$ 768). 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Sutton
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Romford
Bedford
Watford
Luton
High Wycombe
Hounslow

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to London

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Heathrow flights

Top airline flying from Boston to London

Discover the top airline that operate flights from Boston to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 600AverageC$ 743FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Boston today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Boston to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Boston to London with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to London, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boston to London become cheaper?

Of course! You can now track prices for flights from Boston to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.