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Cheap flights from New Hampshire to London from $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New Hampshire to London departing on 7/19. 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 New Hampshire to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:30 am - 9:20 am
BOS
-
LHR
22h 50m
2 stops
Multiple Airlines Logo
6:00 am - 2:05 pm
LHR
-
BOS
13h 05m
1 stop
$491Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
6:40 pm - 8:35 pm
BOS
-
LHR
20h 55m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$492Multiple Airlines
Wed, Feb 11 - Sat, Feb 14
Aer Lingus Logo
7:25 pm - 9:15 am
BOS
-
LHR
8h 50m
1 stop
Aer Lingus Logo
10:00 am - 4:50 pm
LHR
-
BOS
11h 50m
1 stop
$493Aer Lingus
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
10:15 am - 7:10 am
BOS
-
LHR
15h 55m
1 stop
Multiple Airlines Logo
6:00 am - 2:05 pm
LHR
-
BOS
13h 05m
1 stop
$494Multiple Airlines
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
6:40 pm - 8:35 pm
BOS
-
LHR
20h 55m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$495Multiple Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
3:35 pm - 7:10 am
BOS
-
LHR
10h 35m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$496Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
Lufthansa Logo
8:40 pm - 1:00 pm
BOS
-
LHR
11h 20m
1 stop
Lufthansa Logo
11:10 am - 6:35 pm
LHR
-
BOS
12h 25m
1 stop
$498Lufthansa
Mon, Feb 16 - Thu, Feb 19
Iberia Logo
7:15 pm - 7:00 am
BOS
-
LHR
6h 45mnonstop
Iberia Logo
8:25 am - 7:50 pm
LHR
-
BOS
16h 25m
1 stop
$500Iberia
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
7:31 pm - 8:35 am
MHT
-
LHR
32h 04m
2 stops
United Airlines Logo
6:50 am - 6:56 pm
LHR
-
MHT
17h 06m
2 stops
$520United Airlines
Tue, May 5 - Fri, May 8
United Airlines Logo
7:31 pm - 10:00 am
MHT
-
LHR
33h 29m
2 stops
United Airlines Logo
6:50 am - 6:56 pm
LHR
-
MHT
17h 06m
2 stops
$524United Airlines
Tue, May 5 - Fri, May 8

Aer Lingus flights from New Hampshire to London Heathrow Airport

Our best Aer Lingus deals on New Hampshire to London Heathrow Airport flight tickets
Aer Lingus
Feb 26
BOS7:25 pmBoston Logan Intl
8h 50m
1 stop
LHR9:15 amLondon Heathrow
Mar 2
LHR10:00 amLondon Heathrow
11h 50m
1 stop
BOS4:50 pmBoston Logan Intl
$493
Aer Lingus
Feb 21
BOS7:25 pmBoston Logan Intl
8h 50m
1 stop
LHR9:15 amLondon Heathrow
Feb 28
LHR10:00 amLondon Heathrow
11h 50m
1 stop
BOS4:50 pmBoston Logan Intl
$495
Aer Lingus
Mar 27
BOS8:25 pmBoston Logan Intl
8h 50m
1 stop
LHR9:15 amLondon Heathrow
Apr 5
LHR1:25 pmLondon Heathrow
10h 25m
1 stop
BOS6:50 pmBoston Logan Intl
$516

Delta flights from New Hampshire to London Heathrow Airport

Our best Delta deals on New Hampshire to London Heathrow Airport flight tickets
Delta
Feb 18
BOS8:00 pmBoston Logan Intl
6h 50m
LHR7:50 amLondon Heathrow
Mar 11
LHR6:20 amLondon Heathrow
12h 10m
1 stop
BOS2:30 pmBoston Logan Intl
$517
Delta
Mar 1
BOS8:00 pmBoston Logan Intl
6h 50m
LHR7:50 amLondon Heathrow
Mar 7
LHR6:30 amLondon Heathrow
11h 50m
1 stop
BOS1:20 pmBoston Logan Intl
$519
Delta
Feb 11
BOS8:00 pmBoston Logan Intl
6h 50m
LHR7:50 amLondon Heathrow
Feb 24
LHR6:20 amLondon Heathrow
12h 20m
1 stop
BOS1:40 pmBoston Logan Intl
$520

momondo Fare Finder

 
Customize your flight search to find flights from New Hampshire to London Heathrow Airport 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 832,500 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from New Hampshire to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/1

5:30 am-9:20 am

2 stops22h 50m

London Heathrow

Sun 3/8

6:00 am-2:05 pm

1 stop13h 05m

$491

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 2/11

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Sat 2/14

7:25 pm-2:05 pm

1 stop23h 40m

$492

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 2/26

7:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Mon 3/2

10:00 am-4:50 pm

1 stop11h 50m

$493

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 2/11

10:15 am-7:10 am

1 stop15h 55m

London Heathrow

Tue 2/17

6:00 am-2:05 pm

1 stop13h 05m

$494

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 2/21

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Sat 2/28

7:25 pm-2:05 pm

1 stop23h 40m

$495

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 2/18

3:35 pm-7:10 am

1 stop10h 35m

London Heathrow

Mon 2/23

7:25 pm-2:05 pm

1 stop23h 40m

$496

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/16

8:40 pm-1:00 pm

1 stop11h 20m

London Heathrow

Thu 2/19

11:10 am-6:35 pm

1 stop12h 25m

$498

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 2/26

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Sun 3/1

8:25 am-7:50 pm

1 stop16h 25m

$500

ManchesterLondon

MHT - LHR

MHTLHR

Manchester

Tue 5/5

7:31 pm-8:35 am

2 stops32h 04m

London Heathrow

Fri 5/8

6:50 am-6:56 pm

2 stops17h 06m

$520

ManchesterLondon

MHT - LHR

MHTLHR

Manchester

Tue 5/5

7:31 pm-10:00 am

2 stops33h 29m

London Heathrow

Fri 5/8

6:50 am-6:56 pm

2 stops17h 06m

$524

Flights are sorted by cheapest round-trip flights first.

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

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

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 London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from New Hampshire, with most prices found around $535. If you’re not able to fly to London Heathrow Airport in October, then August is your next best option. Flight prices from New Hampshire to London Heathrow Airport during August average around $573.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $662. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $719.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from New Hampshire to London Heathrow Airport in the afternoon for as low as $619. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $698.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from New Hampshire when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $634 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from New Hampshire for as low as $611 on momondo.

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

You could potentially save up to 23% on your flight if you consider stops on a New Hampshire to London Heathrow Airport flight.

Cheap New Hampshire to London Heathrow Airport flight deals and tips

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

Fastest flight time

6h 30m

Direct flights

Every day
The fastest flight from New Hampshire to London Heathrow Airport takes 6h 30m
Direct flights go from New Hampshire to London Heathrow Airport every day.
Search flight deals

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

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

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

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

    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 New Hampshire to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport 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 London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Crawley
Wembley
Dartford
Hayes
Stratford-upon-Avon
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted
Croydon

Why use momondo?

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

Finding the right flight to London from New Hampshire is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. All flights to London from New Hampshire on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to London from New Hampshire. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to London from New Hampshire. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Heathrow Airport trip

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