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Cheap flights from London Heathrow Airport to Boston from £235

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOS
12 2月 — 19 2月1
1 adult

The best prices from London Heathrow to Boston Logan Intl are usually found in February or September, booked 65 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Heathrow to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 2月 2025.

Round-trip from

£355

One-way from

£235

Popular in

July

Cheapest in

February

Average price

£430

Good round-trip deal

£420 or less

Good one-way deal

£510 or less
Icelandair
  • Icelandair
  • 11/3-23/3
  • 2 total stops
  • 37h 25m total
  • London to Boston
6/5
  • 6/5
  • 1 total stop
  • 25h 35m total
  • London to Boston
Highest demand for flights based on searches. 17% potential increase in price (£88 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from London Heathrow to Boston Logan Intl.
Price to beat on a one-way flight from London Heathrow to Boston Logan Intl.

Find flight deals from Heathrow to Boston

Cheapest flights from Heathrow to Boston
Explore the most affordable flight options available from Heathrow to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 2月 2025.

週三 12/320:40LHR - BOS
1 stop18h 55mIcelandair
週三 26/312:35BOS - LHR
1 stop18h 15mIcelandair
Deal found 5/2£353
週一 17/319:30LHR - BOS
1 stop25h 20mScandinavian Airlines
週一 24/318:45BOS - LHR
1 stop10h 35mScandinavian Airlines
Deal found 4/2£367
週五 7/312:05LHR - BOS
1 stop13h 15mLufthansa
週六 8/318:26BOS - LHR
1 stop30h 29mLufthansa
Deal found 5/2£374
週三 12/213:40LHR - BOS
1 stop29h 45mTAP AIR PORTUGAL
週日 23/222:50BOS - LHR
1 stop18h 50mTAP AIR PORTUGAL
Deal found 6/2£380
週三 12/306:20LHR - BOS
2 stops15h 40mMultiple Airlines
週三 26/319:20BOS - LHR
2 stops17h 15mMultiple Airlines
Deal found 5/2£382
週五 28/206:30LHR - BOS
2 stops17h 12mUnited Airlines
週四 6/306:00BOS - LHR
1 stop9h 35mUnited Airlines
Deal found 6/2£386
週五 21/206:00LHR - BOS
1 stop13h 10mAustrian Airlines
週五 28/214:00BOS - LHR
1 stop11h 40mAustrian Airlines
Deal found 6/2£392
週六 1/320:05LHR - BOS
1 stop29h 15mSWISS
週三 12/322:55BOS - LHR
1 stop10h 05mSWISS
Deal found 6/2£398
週三 5/311:45LHR - BOS
1 stop12h 30mKLM
週三 12/321:10BOS - LHR
Nonstop6h 45mKLM
Deal found 5/2£399
週三 5/306:20LHR - BOS
1 stop12h 24mVirgin Atlantic
週三 12/321:10BOS - LHR
Nonstop6h 45mVirgin Atlantic
Deal found 6/2£402
週五 7/306:50LHR - BOS
2 stops15h 03mAir Canada
週五 14/310:30BOS - LHR
1 stop16h 00mAir Canada
Deal found 5/2£403
週一 17/206:30LHR - BOS
1 stop12h 05mDelta
週一 24/220:10BOS - LHR
Nonstop6h 45mDelta
Deal found 5/2£423

Find flights from Heathrow to Boston within your budget

Customise your flight search to find flights from Heathrow to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 2月 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週三 12/3

20:40-11:35

1 stop18h 55m

Boston Logan Intl

週三 26/3

12:35-10:50

1 stop18h 15m

£353

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週一 17/3

19:30-16:50

1 stop25h 20m

Boston Logan Intl

週一 24/3

18:45-09:20

1 stop10h 35m

£367

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週五 7/3

12:05-20:20

1 stop13h 15m

Boston Logan Intl

週六 8/3

18:26-05:55

1 stop30h 29m

£374

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週三 12/3

06:20-18:00

2 stops15h 40m

Boston Logan Intl

週三 26/3

19:20-16:35

2 stops17h 15m

£382

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週二 1/4

06:00-20:05

1 stop19h 05m

Boston Logan Intl

週四 1/5

22:25-17:45

1 stop14h 20m

£382

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週五 28/2

06:30-18:42

2 stops17h 12m

Boston Logan Intl

週五 14/3

18:10-20:35

1 stop22h 25m

£386

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週五 21/2

06:00-14:10

1 stop13h 10m

Boston Logan Intl

週五 28/2

14:00-06:40

1 stop11h 40m

£392

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週六 1/3

17:10-20:20

1 stop32h 10m

Boston Logan Intl

週三 19/3

22:55-17:50

1 stop14h 55m

£398

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週三 5/3

11:45-19:15

1 stop12h 30m

Boston Logan Intl

週三 12/3

21:10-07:55

Nonstop6h 45m

£399

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

週五 7/3

06:50-16:53

2 stops15h 03m

Boston Logan Intl

週五 14/3

10:30-06:30

1 stop16h 00m

£403

Flights are sorted by cheapest return flights first.

Deals found on 6/2

Showing 1-10 of 24 results
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Best time to book a flight from Heathrow to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Heathrow to Boston

Get recent, data-driven insights about flights from Heathrow to Boston including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Boston?

Use this chart to determine the optimal time to book a return flight from Heathrow to Boston. Price data was last updated on 31 January 2025.

The best time to book flights from London Heathrow Airport to Boston is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Boston?

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Boston (average of £10). Flying from London Heathrow Airport to Boston in July is currently the most expensive (average of £724). 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.

What is the cheapest time of day to fly from LHR to BOS?

Find hourly flight availability from Heathrow to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 2月 2025.

When flying from London Heathrow Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 22% versus a flight in the evening.

What is the cheapest day to fly from London Heathrow Airport to Boston?

Use this chart to determine the cheapest time to fly return from Heathrow to Boston. Price data was last updated on 2 February 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Boston flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Boston

Explore weekly flight availability from Heathrow to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 7 2月 2025.

The most flights from LHR to BOS are scheduled on a Wednesday (34 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).<