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? Early arrival? Instantly customize your resultsTrusted 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 round-trip flights
Cheap one-way flights
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 cheapest month to fly to Boston?
The cheapest month to fly to Boston from London is in September. Flight prices, which tend to average around C$ 721, are often lower during this time because this is during the off-season. If you are unable to visit Boston during the month of September, then departing from London during the month February is also very affordable. Most momondo users find prices during this month for around C$ 727.
What is the cheapest day to depart on your flight to Boston?
On average, the least expensive day to fly to Boston from London is on a Thursday. momondo users have found tickets for Thursday departures for as low as C$ 1,348. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London to Boston on a Friday will generally be more expensive and average around C$ 2,030. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
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 C$ 869 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 C$ 778 on momondo.
What cabin class options are available on London to Boston Logan Intl flights?
There are 1 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.
How have London to Boston flight prices changed over time?
As of June 2025, prices for London to Boston flights are approximately 9% more expensive when compared to flights at the same time last year.
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 5260.9 km.
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 were last updated today.
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 travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Boston?
Based on momondo bookings for flights between London and Boston, the leading plane model is Boeing 777-200/200ER, making up 22.08% of the total bookings. Other popular models include Airbus A330-900neo with 15.59%, Boeing 777 with 15.47%, and Airbus A380-800 with 13.93%.
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?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Boston. momondo saves you time and could save you money on your trip.
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?
Yes momondo offers price alerts on flights to Boston from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.