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Cheap flights from New Hampshire to London from $247

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 4/27. 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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Find the cheapest flights from New Hampshire to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
8:50 pm - 11:55 am
BOS
-
LHR
10h 05m
1 stop
Icelandair Logo
9:25 pm - 9:45 pm
LHR
-
BOS
29h 20m
1 stop
$525Icelandair
Wed, Apr 29 - Wed, May 6
LEVEL Logo
11:50 pm - 9:10 am
BOS
-
LHR
28h 20m
1 stop
LEVEL Logo
8:50 pm - 10:05 pm
LHR
-
BOS
30h 15m
1 stop
$545LEVEL
Sun, Sep 20 - Sat, Sep 26
TAP AIR PORTUGAL Logo
11:15 pm - 10:55 pm
BOS
-
LHR
18h 40m
2 stops
TAP AIR PORTUGAL Logo
6:00 am - 8:20 pm
LHR
-
BOS
19h 20m
1 stop
$582TAP AIR PORTUGAL
Wed, May 6 - Wed, May 13
TAP AIR PORTUGAL Logo
10:30 pm - 5:45 pm
BOS
-
LHR
14h 15m
2 stops
TAP AIR PORTUGAL Logo
6:00 am - 8:20 pm
LHR
-
BOS
19h 20m
1 stop
$583TAP AIR PORTUGAL
Mon, Apr 20 - Thu, May 14
Multiple Airlines Logo
5:21 am - 6:25 am
PWM
-
LHR
20h 04m
1 stop
Multiple Airlines Logo
8:05 pm - 2:11 pm
LHR
-
PWM
23h 06m
1 stop
$722Multiple Airlines
Sun, Apr 19 - Mon, May 4
KLM Logo
5:21 am - 6:25 am
PWM
-
LHR
20h 04m
1 stop
KLM Logo
11:45 am - 12:46 am
LHR
-
PWM
18h 01m
1 stop
$723KLM
Sun, Apr 19 - Mon, May 4
Virgin Atlantic Logo
5:21 am - 6:25 am
PWM
-
LHR
20h 04m
1 stop
Virgin Atlantic Logo
8:40 am - 11:09 pm
LHR
-
PWM
19h 29m
2 stops
$725Virgin Atlantic
Thu, Apr 30 - Thu, May 7
Virgin Atlantic Logo
5:21 am - 6:25 am
PWM
-
LHR
20h 04m
1 stop
Virgin Atlantic Logo
9:20 am - 11:23 pm
LHR
-
PWM
19h 03m
1 stop
$730Virgin Atlantic
Fri, Apr 24 - Fri, May 1
KLM Logo
12:46 pm - 7:10 am
PWM
-
LHR
13h 24m
1 stop
KLM Logo
12:50 pm - 12:43 am
LHR
-
PWM
16h 53m
1 stop
$733KLM
Wed, May 6 - Mon, May 11
Multiple Airlines Logo
12:12 pm - 11:15 am
MHT
-
LHR
18h 03m
1 stop
Multiple Airlines Logo
5:05 pm - 11:36 am
LHR
-
MHT
23h 31m
1 stop
$946Multiple Airlines
Mon, Apr 27 - Tue, May 12

United Airlines flights from New Hampshire to London Heathrow Airport

Our best United Airlines deals on New Hampshire to London Heathrow Airport flight tickets
United Airlines
Apr 27
BOS6:40 pmBoston Logan Intl
10h 20m
1 stop
LHR10:00 amLondon Heathrow
Apr 29
LHR8:40 amLondon Heathrow
11h 30m
1 stop
BOS3:10 pmBoston Logan Intl
$622
United Airlines
May 9
BOS6:25 pmBoston Logan Intl
21h 35m
1 stop
LHR9:00 pmLondon Heathrow
May 11
LHR11:05 amLondon Heathrow
36h 15m
2 stops
BOS6:20 pmBoston Logan Intl
$630
United Airlines
Apr 25
BOS7:30 pmBoston Logan Intl
30h 25m
1 stop
LHR6:55 amLondon Heathrow
Apr 28
LHR6:50 amLondon Heathrow
36h 52m
2 stops
BOS2:42 pmBoston Logan Intl
$634

Delta flights from New Hampshire to London Heathrow Airport

Our best Delta deals on New Hampshire to London Heathrow Airport flight tickets
Delta
May 6
PWM2:51 pmPortland
14h 29m
1 stop
LHR10:20 amLondon Heathrow
May 11
LHR9:55 amLondon Heathrow
18h 14m
2 stops
PWM11:09 pmPortland
$726
Delta
Apr 19
PWM2:51 pmPortland
10h 29m
1 stop
LHR6:20 amLondon Heathrow
May 4
LHR9:55 amLondon Heathrow
18h 28m
2 stops
PWM11:23 pmPortland
$727
Delta
May 6
PWM4:43 pmPortland
14h 22m
2 stops
LHR12:05 pmLondon Heathrow
May 11
LHR9:55 amLondon Heathrow
19h 48m
2 stops
PWM12:43 amPortland
$728

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 April 1, 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

Cheapest round-trip

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 4/29

8:50 pm-11:55 am

1 stop10h 05m

London Heathrow

Wed 5/6

9:25 pm-9:45 pm

1 stop29h 20m

$525

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 9/20

11:50 pm-9:10 am

1 stop28h 20m

London Heathrow

Sat 9/26

8:50 pm-10:05 pm

1 stop30h 15m

$545

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 5/6

11:15 pm-10:55 pm

2 stops18h 40m

London Heathrow

Wed 5/13

6:00 am-8:20 pm

1 stop19h 20m

$582

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 4/20

10:30 pm-5:45 pm

2 stops14h 15m

London Heathrow

Thu 5/14

6:00 am-8:20 pm

1 stop19h 20m

$583

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 4/19

5:21 am-6:25 am

1 stop20h 04m

London Heathrow

Mon 5/4

8:05 pm-2:11 pm

1 stop23h 06m

$722

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 4/19

5:21 am-6:25 am

1 stop20h 04m

London Heathrow

Mon 5/4

11:45 am-12:46 am

1 stop18h 01m

$723

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 4/30

5:21 am-6:25 am

1 stop20h 04m

London Heathrow

Thu 5/7

8:40 am-11:09 pm

2 stops19h 29m

$725

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/24

5:21 am-6:25 am

1 stop20h 04m

London Heathrow

Fri 5/1

9:20 am-11:23 pm

1 stop19h 03m

$730
Quickest round-trip

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/6

12:46 pm-7:10 am

1 stop13h 24m

London Heathrow

Mon 5/11

12:50 pm-12:43 am

1 stop16h 53m

$733

ManchesterLondon

MHT - LHR

MHTLHR

Manchester

Mon 4/27

12:12 pm-11:15 am

1 stop18h 03m

London Heathrow

Tue 5/12

5:05 pm-11:36 am

1 stop23h 31m

$946

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 $522. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from New Hampshire to London Heathrow Airport during January average around $526.

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 $659. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $708.

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 $607. 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 $687.

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 $620 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 $592 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
Stratford-upon-Avon
Crawley
Hayes
Wembley
Stansted
Croydon
Dartford
Brentwood
Guildford
Cobham
Folkestone
Romford
Harrow
Watford

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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