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Cheap flights from London to New Hampshire from £309

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to New Hampshire departing on 14/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London to New Hampshire

Cheap return flights

SWISS Logo
09:25 - 15:25LCY-BOS
11h 00m1 stop
SWISS Logo
17:05 - 08:50BOS-LCY
10h 45m1 stop
£356SWISS
Find Deal
Wed, 17 Sep - Thu, 25 Sep
Logo
10:35 - 18:45STN-BOS
13h 10m1 stop
Logo
17:30 - 10:35BOS-STN
12h 05m1 stop
£356
Find Deal
Wed, 8 Oct - Sun, 12 Oct
Air Canada Logo
13:25 - 21:27LHR-BOS
12h 02m1 stop
Air Canada Logo
18:40 - 20:35BOS-LHR
20h 55m2 stops
£356Air Canada
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Thu, 30 Oct - Sun, 2 Nov
United Airlines Logo
09:30 - 14:30LHR-BOS
10h 00m1 stop
United Airlines Logo
19:38 - 10:50BOS-LHR
10h 12m1 stop
£357United Airlines
Find Deal
Sat, 25 Oct - Mon, 3 Nov
United Airlines Logo
13:25 - 21:27LHR-BOS
12h 02m1 stop
United Airlines Logo
19:54 - 11:05BOS-LHR
10h 11m1 stop
£359United Airlines
Find Deal
Thu, 30 Oct - Mon, 3 Nov
Air Canada Logo
12:40 - 17:38LHR-BOS
9h 58m1 stop
Air Canada Logo
10:40 - 06:30BOS-LHR
14h 50m2 stops
£362Air Canada
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Thu, 11 Sep - Tue, 16 Sep
Finnair Logo
17:00 - 22:50LHR-BOS
10h 50m1 stop
Finnair Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
£373Finnair
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Finnair Logo
17:00 - 22:50LHR-BOS
10h 50m1 stop
Finnair Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
£374Finnair
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Icelandair Logo
14:40 - 18:50LGW-BOS
32h 10m1 stop
Icelandair Logo
11:35 - 10:55BOS-LGW
18h 20m1 stop
£386Icelandair
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Mon, 27 Oct - Sun, 30 Nov
Icelandair Logo
11:55 - 11:35LGW-BOS
27h 40m1 stop
Icelandair Logo
19:50 - 10:55BOS-LGW
10h 05m1 stop
£389Icelandair
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Fri, 31 Oct - Tue, 4 Nov

SWISS flights from London to New Hampshire

Our best SWISS deals on London to New Hampshire flight tickets
SWISS
17 Sept
LCY09:25London City
11h 00m
1 stop
BOS15:25Boston Logan Intl
25 Sept
BOS17:05Boston Logan Intl
10h 45m
1 stop
LCY08:50London City
£356
Find similar
SWISS
23 Sept
LCY09:25London City
11h 00m
1 stop
BOS15:25Boston Logan Intl
21 Oct
BOS21:40Boston Logan Intl
9h 50m
1 stop
LCY12:30London City
£358
Find similar
SWISS
23 Oct
LCY13:05London City
11h 50m
1 stop
BOS19:55Boston Logan Intl
3 Nov
BOS21:50Boston Logan Intl
10h 00m
1 stop
LCY12:50London City
£361
Find similar

Finnair flights from London to New Hampshire

Our best Finnair deals on London to New Hampshire flight tickets
Finnair
15 Sept
LHR17:00London Heathrow
10h 50m
1 stop
BOS22:50Boston Logan Intl
22 Sept
BOS20:10Boston Logan Intl
6h 40m
LHR07:50London Heathrow
£373
Find similar
Finnair
15 Sept
LHR17:00London Heathrow
10h 50m
1 stop
BOS22:50Boston Logan Intl
22 Sept
BOS20:10Boston Logan Intl
6h 40m
LHR07:50London Heathrow
£374
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London to New Hampshire 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, momondo users made 279,928 searches. Data last updated 4 September 2025.
Use the filters below to find and compare flights from London to New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LCY - BOS

LCYBOS

London City

Wed 17/9

09:25-15:25

1 stop11h 00m

Boston Logan Intl

Thu 25/9

17:05-08:50

1 stop10h 45m

£356

LondonBoston

STN - BOS

STNBOS

London Stansted

Wed 8/10

10:35-18:45

1 stop13h 10m

Boston Logan Intl

Sun 12/10

17:30-10:35

1 stop12h 05m

£356

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 30/10

13:25-21:27

1 stop12h 02m

Boston Logan Intl

Sun 2/11

18:40-20:35

2 stops20h 55m

£356

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 25/10

09:30-14:30

1 stop10h 00m

Boston Logan Intl

Mon 3/11

19:38-10:50

1 stop10h 12m

£357

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 30/10

13:25-21:27

1 stop12h 02m

Boston Logan Intl

Mon 3/11

19:54-11:05

1 stop10h 11m

£359

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 11/9

12:40-17:38

1 stop9h 58m

Boston Logan Intl

Tue 16/9

10:40-06:30

2 stops14h 50m

£362

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 15/9

17:00-22:50

1 stop10h 50m

Boston Logan Intl

Mon 22/9

20:10-07:50

Nonstop6h 40m

£373

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 15/9

17:00-22:50

1 stop10h 50m

Boston Logan Intl

Mon 22/9

20:10-07:50

Nonstop6h 40m

£374

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Mon 27/10

14:40-18:50

1 stop32h 10m

Boston Logan Intl

Sun 30/11

11:35-10:55

1 stop18h 20m

£386

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Fri 31/10

11:55-11:35

1 stop27h 40m

Boston Logan Intl

Tue 4/11

19:50-10:55

1 stop10h 05m

£389

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New Hampshire from

How to get the cheapest flight ticket from London to New Hampshire

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to New Hampshire?

The month of September is, on average, the cheapest month to fly to New Hampshire from London, with most prices found around £393. If you’re not able to fly to New Hampshire in September, then February is your next best option. Flight prices from London to New Hampshire during February average around £397.

What is the cheapest day to depart on your flight to New Hampshire?

On average, the least expensive day to fly to New Hampshire from London is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £486. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to New Hampshire is Sunday, with ticket prices averaging around £580.

What is the cheapest time of day to depart on your flight to New Hampshire?

Our most recent data shows that the best time of day to fly to New Hampshire is at midday. Flights from London to New Hampshire during this time can be as low as £490. Flights in the evening are often more expensive, with an average ticket price of £691.

How far in advance should I book a flight to New Hampshire?

You are more likely to see cheaper flights to New Hampshire from London when booking weeks ahead of your departure date. In general, you can expect to find flights to New Hampshire for around £462 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New Hampshire from London for as low as £424 on momondo.

Can stopping save me money on London to New Hampshire flights?

You could potentially save up to 81% on your flight if you consider stops on a London to New Hampshire flight.

Cheap London to New Hampshire flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to New Hampshire

Fastest flight time

7h 20m

Direct flights

Every day

Airports in New Hampshire

1 airport
The fastest flight from London to New Hampshire takes 7h 20m
Direct flights go from London to New Hampshire every day.
There is 1 airport near New Hampshire: Boston Logan Intl (BOS)
Search flight deals

  • When did momondo last update prices for flights from London to New Hampshire?

    Prices for flights from London to New Hampshire are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to New Hampshire?

  • How old do you have to be to fly from London to New Hampshire?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to New Hampshire.

  • What documentation or ID do you need to fly to New Hampshire?

    The travel and health documents you'll need for your trip to New Hampshire may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at New Hampshire. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from London to New Hampshire

Compare and see reviews for airlines that fly from London to New Hampshire with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £565Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
FinnairPriceFrom £618Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
IcelandairPriceFrom £761Free CancellationRating
7.0
544 reviews
Search Icelandair flights

Why use momondo?

Why should I use momondo to find a flight deal from London to New Hampshire?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to New Hampshire. momondo saves you time and could save you money on your trip.

Can I find flights from London to New Hampshire with flexible booking policies on momondo?

Flights from London to New Hampshire with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to New Hampshire?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to New Hampshire.

I’m not ready to book a flight from London to New Hampshire right now. Can momondo alert me if prices change?

If you are simply researching potential flights to New Hampshire, momondo offers a useful price alert feature which will track prices for flights to New Hampshire from London and alert you when they change.

An easier way to manage your New Hampshire trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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