Cheap flights from London to Boston from £144
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Boston departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London to Boston
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Air France flights from London to Boston
Our best Air France deals on London to Boston flight tickets
Virgin Atlantic flights from London to Boston
Our best Virgin Atlantic deals on London to Boston flight tickets
See travel insights to Boston from
How to get the cheapest flight ticket from London to Boston
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between London and Boston?
What is the cheapest month to fly to Boston?
In general, September is the cheapest month to fly from London to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £388. The month of February is another great option to travel to Boston, with average flight prices from London averaging around £392.
What is the cheapest day to depart on your flight to Boston?
The cheapest day to depart on your flight to Boston is on a Wednesday when prices can be found for as low as £485. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £580. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.
What is the cheapest time of day to depart on your flight to Boston?
Our most recent data shows that the best time of day to fly to Boston is in the afternoon. Flights from London to Boston during this time can be as low as £491. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around £701 per ticket.
What is the cheapest London to Boston Logan Intl flight route?
Fly from London Heathrow to Boston Logan Intl for the best London - Boston Logan Intl flight prices
How far in advance should I book a flight to Boston?
You are more likely to see cheaper flights to Boston from London when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around £468 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as £419 on momondo.
What cabin class options are available on London to Boston Logan Intl flights?
There are 4 cabin classes available to choose from on London to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on London to Boston flights?
You could potentially save up to 24% on your flight if you consider stops on a London to Boston flight.
How have London to Boston flight prices changed over time?
As of June 2025, prices for London to Boston flights are approximately 8% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from London to Boston Logan Intl?
Vueling, Iberia, and PLAY are the most popular carriers operating from London to Boston Logan Intl
Which airlines fly to Boston?
British Airways, Virgin Atlantic and Aer Lingus are the top three most popular airlines that fly to Boston from London according to our data. British Airways is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Boston. Keep in mind that there are 17 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.
How many flights depart from London to Boston on average per day?
As of June 2025, 38 flights take off from London and land in Boston each day. The most common flight departure time for this route is 08:00, with 41% of daily flights taking off in the afternoon.
How many flights depart from London to Boston on average per week?
The number of flights available between London and Boston is 266 per week as of June 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.
When to book flights from London to Boston
Cheap London to Boston (LON to BOS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Boston
How far is London to Boston Logan Intl by plane?
The distance between London and Boston Logan Intl is about 3269.0 mi. 7h 20m is a normal flight duration for this route.
When did momondo last update prices for flights from London to Boston Logan Intl Airport?
Prices for flights from London to Boston Logan Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to Boston Logan Intl Airport?
There are 17 operators available for flights from London to Boston Logan Intl Airport as of June 2025.
How old do you have to be to fly from London to Boston Logan Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Boston Logan Intl Airport.
What documentation or ID do you need to fly to Boston Logan Intl Airport?
The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London to Boston?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Boston is Boeing 777-200/200ER (22.08% of total bookings). The next most popular plane models are Airbus A330-900neo (15.59%), Boeing 777 (15.47%), and Airbus A380-800 (13.93%).
What is the most popular airline from London to Boston?
Based on momondo bookings for flights between London and Boston, the leading airline is British Airways, making up 28% of the total bookings. Other popular airlines include Virgin Atlantic with 23%, PLAY with 10%, and Icelandair with 7%.
Best airlines flying from London to Boston
Compare and see reviews for airlines that fly from London to Boston with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £7 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom £259 | Free Cancellation | Rating 7.0 102 reviews | |||
| PriceFrom £279 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom £304 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £305 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom £309 | Free Cancellation | Rating 6.7 7,139 reviews | |||
| PriceFrom £336 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom £336 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom £336 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom £336 | Free Cancellation | Rating 7.8 1,358 reviews |
Delta Flights From London to Boston
Delta is one of the most popular airlines flying from London to Boston, operating 21 flights/week on average for this route. A good Delta flight deal for London to Boston starts from £498 round-trip, up to an average price of £686. Our users have rated Delta at 8.0/10.
KLM Flights From London to Boston
KLM (7.8/10 from 1,358 reviews) operates around 21 flights from London to Boston in any given week. The average KLM airfare for this route is around £546, with deals from around £457 rare but found on momondo. Referenced prices are for round-trip London to Boston flight searches in the last 72 hours.
Travelling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Boston?
It is quick and easy to find London to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.
Can I find flights from London to Boston with flexible booking policies on momondo?
Flights from London to Boston with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Boston?
Once all potential London to Boston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Boston right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Boston, momondo offers a useful price alert feature which will track prices for flights to Boston from London and alert you when they change.