World Traveller Plus offers extra seat width and legroom, ideal for more comfort.
Club Suite features solo pods with a door for privacy, available on most 777s and A350s.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $449 (Flightnetwork) |
One-way from | $404 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $579 |
Good round-trip deal | $686 or less |
Good one-way deal | $521 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Tue 12/2
8:35 pm-5:50 pm
1 stop26h 15m
Boston Logan Intl
Sat 12/13
7:50 pm-7:30 pm
1 stop18h 40m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Sun 12/7
12:15 pm-5:50 pm
1 stop10h 35m
Boston Logan Intl
Mon 12/15
7:50 pm-10:50 am
1 stop10h 00m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Fri 2/6
6:40 am-3:50 pm
1 stop14h 10m
Boston Logan Intl
Mon 2/9
5:35 pm-2:35 pm
2 stops16h 00m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Mon 12/8
11:10 am-6:35 pm
1 stop12h 25m
Boston Logan Intl
Mon 12/15
10:15 am-7:10 am
1 stop15h 55m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Mon 11/24
6:40 am-3:50 pm
1 stop14h 10m
Boston Logan Intl
Fri 11/28
5:35 pm-6:30 pm
2 stops19h 55m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Mon 12/8
11:10 am-6:35 pm
1 stop12h 25m
Boston Logan Intl
Mon 12/15
7:07 pm-10:50 am
1 stop10h 43m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Mon 1/12
1:45 pm-8:00 pm
1 stop11h 15m
Boston Logan Intl
Tue 1/20
9:50 pm-1:00 pm
1 stop10h 10m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Thu 1/8
9:05 pm-3:50 pm
2 stops23h 45m
Boston Logan Intl
Tue 1/13
5:35 pm-4:25 pm
2 stops17h 50m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Mon 11/17
8:35 pm-5:50 pm
1 stop26h 15m
Boston Logan Intl
Mon 7/20
11:30 pm-8:20 pm
1 stop15h 50m
LondonBoston
LHR - BOS
LHRBOS
London Heathrow
Thu 12/4
12:05 pm-8:00 pm
1 stop12h 55m
Boston Logan Intl
Thu 12/11
12:02 pm-6:40 am
2 stops13h 38m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Boston (average of $423). Flying from London Heathrow Airport to Boston in July is currently the most expensive (average of $503). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
One of the essential ways to save on airfare from London Heathrow Airport to Boston is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 5% on airfare.
Travelers seeking maximum savings on their London Heathrow Airport to Boston flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
About 9% of weekly flights between London and Boston have experienced delays in the past year, with the average delay time being 151 minutes.
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Air Canada have had the lowest number of delays on this route, with no flights being classified as delayed.
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Comfort
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$404 | Average$676 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$412 | Average$761 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$445 | Average$477 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$478 | Average$870 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$480 | Average$626 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$481 | Average$739 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$486 | Average$641 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$539 | Average$637 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$551 | Average$799 | FlexibilityNo cancel fee | On-time72% |