International route
Cheap flights from Boston to London
Boston Logan International Airport (BOS) to London Heathrow Airport (LHR). 3,256 miles, 6h 20m nonstop.
BOS to LHR at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 3,256 milesgreat-circle
- Typical flight time
- 6h 20mnonstop, gate to gate
- Nonstop airlines
- DLB62 airlinesDelta, JetBlue
- Nonstop flights per day
- 2all airlines combined
- Cheapest month
- February 2027over the next six months
- Best day to fly
- Tuesday17% less than Friday
- Time difference
- 5h aheadLondon vs Boston
Boston to London
Round trips from $269
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Feb 2.
Cheapest month: February 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppBoston to London fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Boston to London
2 airlines fly nonstop with 2 departures a day combined, plus 13 more with one stop.
- DLDelta Air LinesSkyTeamNonstop · 1 flight a day · first checked bag from $35
- B6JetBlueNonstop · 1 flight a day · first checked bag from $40
- EIAer LingusConnecting via DUB · first checked bag from $70
- ACAir CanadaStar AllianceConnecting via YUL · first checked bag from $35
- AFAir FranceSkyTeamConnecting via CDG, ORY · first checked bag from $75
- AAAmerican AirlinesoneworldConnecting via CLT, ORD, PHL, DCA, JFK · first checked bag from $40
- OSAustrian AirlinesStar AllianceConnecting via VIE · first checked bag from $75
- AYFinnaironeworldConnecting via HEL · first checked bag from $70
- IBIberiaoneworldConnecting via MAD · first checked bag from $70
- AZITA AirwaysConnecting via FCO · first checked bag from $70
- KLKLM Royal Dutch AirlinesSkyTeamConnecting via AMS · first checked bag from $75
- SKSAS Scandinavian AirlinesSkyTeamConnecting via OSL · first checked bag from $70
- LXSWISSStar AllianceConnecting via GVA · first checked bag from $75
- UAUnited AirlinesStar AllianceConnecting via ORD, IAD · first checked bag from $40
- WSWestJetConnecting via YYZ · first checked bag from $35
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Chicago (ORD)AAUA2 airlines
- Charlotte (CLT)AA1 airline
- Philadelphia (PHL)AA1 airline
- Washington (DCA)AA1 airline
- New York (JFK)AA1 airline
Which airport should I use?
BostonLondon has 3 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Tips for this route
- Only Delta and JetBlue fly this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through ORD or CLT is usually cheaper if you can spare the extra three to five hours.
- February 2027 is the cheapest month to fly over the next six months, with round trips from $269; September 2026 is the most expensive at $383 and up, a difference of $114 per traveler.
- Departing on a Tuesday averages 17% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 6 to 12 weeks ahead; fares climb in the last three weeks and around holidays.
- London is 5 hours ahead of Boston. Expect to lose 5 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Destination guide
London: The most-flown transatlantic route, for good reason
London is the busiest international destination from the US, with nonstops from more than 30 American cities into Heathrow and Gatwick. The museums are free, the theater is world-class and the Tube reaches everything — including Heathrow.
Best time to visit: May–June and September are mild with long days; July–August is warm and busy. December has Christmas markets and lights. January–March is cold and gray but fares can drop below $500 round trip.
Flying the other way? London to BostonFares, airlines and tips for LHR to BOS.Ready to compare live fares?
See every airline on BOS–LHR side by side with bags and seat rules spelled out.
Search Boston to LondonBoston to London: common questions
How long is the flight from Boston to London?
A nonstop flight from Boston (BOS) to London (LHR) takes about 6h 20m gate to gate, covering 3,256 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from BOS to LHR?
Delta Air Lines and JetBlue operate nonstop flights from Boston (BOS) to London (LHR), with 2 nonstop departures a day between them. One-stop options connect through ORD, CLT and PHL.
What is the cheapest month to fly from Boston to London?
Over the next six months, February 2027 has the lowest round-trip fares from Boston (BOS) to London (LHR), starting at $269 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book Boston to London flights?
Book 6 to 12 weeks ahead; fares climb in the last three weeks and around holidays. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Boston and London?
London is 5 hours ahead of Boston. BOS is on America/New York time and LHR on Europe/London time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.