Cheap Flights from Boston Logan International to London Heathrow

Compare Boston Logan International to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Boston Logan International to London Heathrow

Looking for a cheap last-minute deal or the best round-trip flight from Boston Logan International to London Heathrow? Find the lowest prices on one-way and round-trip tickets right here.

London.$387 per passenger.Departing Sat, Feb 28, returning Sun, Mar 1.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Sat, Feb 28, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Sun, Mar 1, arriving in Boston Logan International.Price includes taxes and charges.From $387, select.

London.$388 per passenger.Departing Sat, Oct 4, returning Mon, Oct 6.Round-trip flight with United.Outbound indirect flight with United, departing from Boston Logan International on Sat, Oct 4, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Mon, Oct 6, arriving in Boston Logan International.Price includes taxes and charges.From $388, select.

London.$390 per passenger.Departing Fri, Nov 14, returning Sat, Nov 15.Round-trip flight with Iberia.Outbound indirect flight with Iberia, departing from Boston Logan International on Fri, Nov 14, arriving in London Heathrow.Inbound indirect flight with Iberia, departing from London Heathrow on Sat, Nov 15, arriving in Boston Logan International.Price includes taxes and charges.From $390, select.

London.$398 per passenger.Departing Wed, Oct 1, returning Sat, Nov 1.Round-trip flight with Icelandair and Vueling Airlines.Outbound indirect flight with Icelandair, departing from Boston Logan International on Wed, Oct 1, arriving in London Heathrow.Inbound indirect flight with Vueling Airlines, departing from London Heathrow on Sat, Nov 1, arriving in Boston Logan International.Price includes taxes and charges.From $398, select.

London.$402 per passenger.Departing Tue, Sep 9, returning Tue, Sep 30.Round-trip flight with Icelandair and Vueling Airlines.Outbound indirect flight with Icelandair, departing from Boston Logan International on Tue, Sep 9, arriving in London Heathrow.Inbound indirect flight with Vueling Airlines, departing from London Heathrow on Tue, Sep 30, arriving in Boston Logan International.Price includes taxes and charges.From $402, select.

London.$404 per passenger.Departing Tue, Sep 9, returning Wed, Oct 1.Round-trip flight with Icelandair and Vueling Airlines.Outbound indirect flight with Icelandair, departing from Boston Logan International on Tue, Sep 9, arriving in London Heathrow.Inbound indirect flight with Vueling Airlines, departing from London Heathrow on Wed, Oct 1, arriving in Boston Logan International.Price includes taxes and charges.From $404, select.

London.$406 per passenger.Departing Tue, Sep 2, returning Tue, Nov 4.Round-trip flight with Icelandair and Vueling Airlines.Outbound indirect flight with Icelandair, departing from Boston Logan International on Tue, Sep 2, arriving in London Heathrow.Inbound indirect flight with Vueling Airlines, departing from London Heathrow on Tue, Nov 4, arriving in Boston Logan International.Price includes taxes and charges.From $406, select.

London.$406 per passenger.Departing Sun, Aug 24, returning Tue, Sep 2.Round-trip flight with Icelandair and Vueling Airlines.Outbound indirect flight with Icelandair, departing from Boston Logan International on Sun, Aug 24, arriving in London Heathrow.Inbound indirect flight with Vueling Airlines, departing from London Heathrow on Tue, Sep 2, arriving in Boston Logan International.Price includes taxes and charges.From $406, select.

Find the cheapest month to fly from Boston Logan International to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to London Heathrow flights are currently cheapest in October.

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Direct flights from Boston Logan International to London Heathrow

Boston Logan International to London Heathrow: Alternative routes

Compare routes from Boston Logan International to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Boston to London: Flight information

The things to know before you go.

Cheapest flight found	$387
Cheapest month to fly	February
Average flight time	6 hrs, 40 mins
Most popular airline	Finnair
Average flights per week	222

Finding cheap flights from Boston Logan International to London Heathrow: Frequently asked questions

How much are round-trip flights from Boston Logan International to London Heathrow?

The best price we found for a round-trip flight from Boston Logan International to London Heathrow is $387. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Boston Logan International to London Heathrow?

6 hours and 40 minutes is the average flight time from Boston Logan International to London Heathrow.

Which airlines fly direct from Boston Logan International to London Heathrow?

Finnair, KLM and American Airlines fly direct from Boston Logan International to London Heathrow.

How many flights are there a week from Boston Logan International to London Heathrow?

There are 222 flights per week flying from Boston Logan International to London Heathrow, as of June 2025.

When is the cheapest time to fly from Boston Logan International to London Heathrow?

The cheapest month to fly from Boston Logan International to London Heathrow is usually June 2025.

Which upcoming date is cheapest to fly from Boston Logan International Airport to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to London Heathrow Airport on Saturday, February 28, 2026.

Can I get a direct flight from Boston Logan International Airport to London Heathrow Airport?

Yes – the average flight time is 6 hours and 40 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Boston Logan International Airport to London Heathrow?

Currently, United and Finnair offer the cheapest flight tickets to London Heathrow.

Traveling from Logan International Airport (BOS) to London Heathrow Airport (LHR): what you need to know

Book a direct flight from Logan International Airport to London Heathrow Airport and you'll be in the air for an average of 6 hours 45 minutes.
London is four hours ahead of Boston and follows the UTC+0 timezone.
Each week, there are 141 Logan International Airport to London Heathrow Airport flights. To be on board as soon as possible, jump on the 07:15 British Airways flight. If you're eager to make the most of your time before flying, the latest flight is at 23:20 with Virgin Atlantic.
For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your BOS to LHR flight.
You can expect bigger queues in popular months such as August. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.
There are plenty of direct flights from Logan International Airport to London Heathrow Airport to pick from. When organizing your London trip, these airlines can fly you nonstop to this exciting part of United Kingdom:
The airline that passengers book most often on this route is American Airlines.
American Airlines is the most punctual carrier operating BOS to LHR flights. A dependable 83.12% of its services on this route arrive on time.
Think about adding a stopover when booking your ticket from Logan International Airport to London Heathrow Airport. Simply deselect 'Direct flights only' to break up your journey, or enjoy a detour to a new and interesting place. Check out these options between BOS and LHR:
- Dublin Airport
- Amsterdam Airport Schiphol
- John F. Kennedy International Airport

How to find the cheapest flights from Logan International Airport (BOS) to London Heathrow Airport (LHR)

Right now, $180 is the cheapest price we've seen for a one-way Logan International Airport to London Heathrow Airport flight. The best price for a return plane ticket is $387. Bear in mind that fares may change due to demand when booking.
Get cheap tickets from BOS to LHR by booking eight months ahead. Based on our research, that's the sweet spot for bagging a bargain.
Plan your trip for July. That's the cheapest month for flights from Logan International Airport to London Heathrow Airport. If you have flexibility with your dates, try out the 'Whole month' tool to see the lowest airfare across every month.
Snapping up cheap flights from BOS to LHR is a cinch with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when a lower fare pops up.
Tailor your trip with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Logan International Airport to London Heathrow Airport.

Handy information about Logan International Airport (BOS)

BOS is located at One Harborside Drive.
73.94% of flights that depart Logan International Airport arrive at their destination on schedule.
Central Boston to Logan International Airport is approximately 5 kilometers. Depending on traffic, it'll take you about 10 minutes to get there if you're driving, ride-sharing or catching a cab.
The journey on public transport typically takes 25 minutes.
Get your trip off to a hassle-free start by staying near BOS. Whether you're catching an early flight from Logan International Airport to London Heathrow Airport or just don't want to be rushed, these hotels have you covered:

Arriving at London Heathrow Airport (LHR)

The last thing you want is a lengthy journey to your hotel if you're landing late on a Logan International Airport to London Heathrow Airport flight. Reserve one of these accommodation options near LHR instead:
Pick up a London Heathrow Airport rental car and explore London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are top outlets you can book with here.
Reserving your ride from London Heathrow Airport about one week in advance can help you secure the lowest rate.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport to central London has a drive time of about 55 minutes. It's approximately 31 kilometers away.
It takes around 1 hour if you're using public transport.

When to fly to London Heathrow Airport (LHR)

The quietest month for a flight from Logan International Airport to London Heathrow Airport is February, while July is the most popular. Pick the ideal time to go to London based on whether you prefer a laid-back vibe or a more bustling atmosphere.
The warmest month in London is July, with temperatures ranging between 11ºC (52ºF) and 26ºC (79ºF). Book your flights from Logan International Airport to London Heathrow Airport in this month if this is the type of weather you like.
Look for cheap tickets from BOS to LHR in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of United Kingdom

You've done London, now it's time to discover more of United Kingdom. Journey around 161 kilometers north-west to Birmingham to tick off its popular sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, your itinerary will be busy.
If there's time to check out another great destination in United Kingdom, head for Bristol, about 177 kilometers west of London. Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park are key reasons to visit.