How long is the flight from Boston to London?

Non-stop flights on BOS → LHR are typically around 6.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from Boston to London?

The main carriers on this route are British Airways, Delta, Virgin Atlantic, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

When is the cheapest time to fly from Boston to London?

Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book Boston to London?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

BOS → LHR

Boston to London flights.

Live cached fares on Boston (BOS) → London (LHR), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~6.5h non-stop
Airlines
British Airways, Delta, Virgin Atlantic, American
Cheapest months
January, February, November

Flex dates · cheapest nearby

Loading prices…

No cached fares for exactly 2026-06-08 → 2026-06-15. Showing recent fares on BOS → LHR — pick a different date in the calendar above or run a live search.

Boston → London · 12 fares

Cached from Travelpayouts · filter & sort below

Showing 12 of 12 results

Cheapest
American Airlines · AA 4401
OutboundBOS → LHRSun, Jun 14 · 10:00 AM· 8h 40m· 1 stop
$427
one-way
Book →
JetBlue · B6 1117
OutboundBOS → LHRTue, Jun 16 · 12:14 AM· 10h 26m· 2 stops
$522
one-way
Book →
Air Canada · AC 7668
OutboundBOS → LHRThu, Aug 6 · 10:25 PM· 7h 45m· 1 stop
ReturnLHR ← BOSMon, Aug 24 · 9:50 AM· 10h 20m· 1 stop
$540
total round-trip
Book →
Icelandair · FI 630
OutboundBOS → LHRFri, Sep 18 · 12:50 AM· 8h 30m· 1 stop
ReturnLHR ← BOSMon, Sep 28 · 12:05 PM· 8h 50m· 1 stop
$696
total round-trip
Book →
Air Canada · AC 751
OutboundBOS → LHRTue, Jun 9 · 2:35 PM· 8h 8m· 1 stop
ReturnLHR ← BOSWed, Jun 10 · 7:05 PM· 10h· 1 stop
$712
total round-trip
Book →
0P · 0P 8482
OutboundBOS → LHRThu, Jun 25 · 10:25 PM· 7h 45m· 1 stop
ReturnLHR ← BOSSun, Jun 28 · 6:45 AM· 9h 9m· 1 stop
$757
total round-trip
Book →
Air Canada · AC 753
OutboundBOS → LHRSat, May 9 · 7:40 PM· 8h 23m· 1 stop
ReturnLHR ← BOSSat, May 23 · 7:05 PM· 9h 50m· 1 stop
$772
total round-trip
Book →
Icelandair · FI 630
OutboundBOS → LHRFri, Jun 12 · 12:50 AM· 8h 30m· 1 stop
ReturnLHR ← BOSThu, Jun 18 · 12:05 PM· 9h· 1 stop
$850
total round-trip
Book →
Icelandair · FI 630
OutboundBOS → LHRTue, May 26 · 12:50 AM· 8h 30m· 1 stop
ReturnLHR ← BOSSat, Jun 20 · 12:05 PM· 8h 50m· 1 stop
$904
total round-trip
Book →
Air Canada · AC 8611
OutboundBOS → LHRSun, Dec 20 · 10:40 PM· 8h 38m· 2 stops
ReturnLHR ← BOSTue, Dec 29 · 9:00 AM· 10h 45m· 1 stop
$914
total round-trip
Book →
Air Canada · AC 751
OutboundBOS → LHRTue, Jun 23 · 2:40 PM· 8h 13m· 1 stop
ReturnLHR ← BOSMon, Jun 29 · 11:40 AM· 8h 47m· 1 stop
$1,017
total round-trip
Book →
Air Canada · AC 8611
OutboundBOS → LHRSun, May 24 · 10:50 PM· 8h 9m· 1 stop
ReturnLHR ← BOSSun, Jun 21 · 4:40 PM· 9h 37m· 1 stop
$1,044
total round-trip
Book →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Hartford (BDL) → London (LHR)

nearby origin

Providence (PVD) → London (LHR)

nearby origin

Boston (BOS) → London (LGW)

nearby destination

About Boston → London

Shortest mainland-US transatlantic to LHR. 6-8 daily non-stops; premium cabin awards open 330 days out.

Typical non-stop flying time is around 6.5 hours. Major carriers on this route include British Airways, Delta, Virgin Atlantic, American. Fares are usually cheapest in January, February, November — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: Boston to London

Live cheapest round-trip fare cached on BOS → LHR for each of the next 12 months. Tap any month and run a live search to confirm.

Apr
No data
May
Shoulder
from $772
Jun
Shoulder
from $712
Jul
No data
Aug
Low
from $540
Sep
Shoulder
from $696
Oct
No data
Nov
No data
Dec
Peak
from $914
Jan
No data
Feb
No data
Mar
No data

Cheapest next 12 months: August from $540 round-trip. Run a live search →

Booking window tip

Medium-haul is the classic 6-10 week booking window. Fares drift down as the departure gets closer until about 21 days out, then start climbing fast. Tuesday and Wednesday departures are typically 10-18% cheaper than Friday or Sunday.

Questions, answered

How long is the flight from Boston to London?
Non-stop flights on BOS → LHR are typically around 6.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from Boston to London?
The main carriers on this route are British Airways, Delta, Virgin Atlantic, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from Boston to London?
Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book Boston to London?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other ways to reach London

If your plans are flexible on the origin, these alternate departure airports also serve London on the routes we track.

Other popular routes

Keep planning

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