Boston to London BOS → LGW, LHR, LTN, STN
Logan International Airport (BOS) → London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), Stansted Airport (STN)
The cheapest return found recently is $525 with Air Canada Express, 11 Nov – 16 Nov, found today. The cheapest one-way found recently is $306 with Icelandair, 15 Dec, found 3 days ago.
Return
The cheapest return fare on each of 8 departure dates is usually $560 to $896.
Cheapest return found recently
$525
11 Nov – 16 Nov · Air Canada Express
Logan International Airport (BOS) → Stansted Airport (STN)
Leaves 3:30 p.m. · Return leaves 7:05 p.m. · 58 h 38 min of travel, both ways together
out 2 stops, back 2 stops
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$525 11 Nov – 16 Novfound todaySee prices for these dates
$441 10 Nov – 17 Novfound 2 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $441 to $571.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 8 departure dates from 10 Nov to 9 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 5-night return fares leaving within 3 days of 11 Nov to compare.
Every date we hold
8 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 10 Nov – 17 Nov | $441 | Aer Lingus | Logan International Airport (BOS) → Stansted Airport (STN) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 11 Nov – 16 Nov | $525 | Air Canada Express | Logan International Airport (BOS) → Stansted Airport (STN) | out 2 stops, back 2 stops | found today | See prices for these dates |
| 12 Nov – 21 Nov | $571 | TAP Air Portugal | Logan International Airport (BOS) → Stansted Airport (STN) | out 2 stops, back 2 stops | found 6 days ago | See prices for these dates |
| 19 Nov – 27 Nov | $785 | Air Canada | Logan International Airport (BOS) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 15 Dec – 15 Dec | $891 | British Airways | Logan International Airport (BOS) → London Heathrow Airport (LHR) | out nonstop, back 2 stops | found 3 days ago | See prices for these dates |
| 17 Dec – 30 Dec | $909 | Icelandair | Logan International Airport (BOS) → London Luton Airport (LTN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 21 Dec – 4 Jan 2027 | $962 | Azores Airlines | Logan International Airport (BOS) → London Gatwick Airport (LGW) | out 2 stops, back 2 stops | found 3 days ago | See prices for these dates |
| 9 Mar 2027 – 13 Mar 2027 | $603 | TAP Air Portugal | Logan International Airport (BOS) → London Luton Airport (LTN) | out 2 stops, back 2 stops | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $441.
Airlines on the cheapest dates: TAP Air Portugal, Aer Lingus, Air Canada Express, Air Canada, British Airways, Icelandair, Azores Airlines.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $317 to $376.
Cheapest one-way found recently
$306
15 Dec · Icelandair
Logan International Airport (BOS) → London Heathrow Airport (LHR)
Leaves 7:50 p.m. · 18 h 40 min trip
1 stop
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$306 15 Decfound 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $270 to $327.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 15 Dec to 17 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold one-way fares on 2 other departure dates within 3 days of 15 Dec, and none is cheaper.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 15 Dec | $306 | Icelandair | Logan International Airport (BOS) → London Heathrow Airport (LHR) | 1 stop | found 3 days ago | Open this trip |
| 16 Dec | $327 | Icelandair | Logan International Airport (BOS) → London Gatwick Airport (LGW) | 1 stop | found 5 days ago | Open this trip |
| 17 Dec | $425 | Azores Airlines | Logan International Airport (BOS) → Stansted Airport (STN) | 2 stops | found 6 days ago | Open this trip |
Airlines on the cheapest dates: Icelandair, Azores Airlines.
Premium cabin fares from Boston to London
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 11 Nov – 16 Nov in another cabin: Premium economy · Business · First
Today's prices for 15 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to London?
Return
Fares 30 to 59 days before departure were typically 40% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $825 | $638 | +65% | 12 |
| 14–29 days | $571 | $441 | +14% | 23 |
| 30–59 days | $499 | $458 | Cheapest seen | 21 |
| 60–89 days | $820 | $538 | +64% | 23 |
| 90–179 days | $742 | $582 | +49% | 25 |
| 180+ days | $650 | $650 | +30% | 12 |
One-way
Fares 90 to 179 days before departure were typically 11% lower than 60 to 89 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $306 | $304 | +12% | 11 |
| 90–179 days | $273 | $273 | Cheapest seen | 7 |
| 180+ days | $294 | $283 | +8% | 24 |
Live price for these dates
The cheapest return found recently is for 11 Nov – 16 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work