£305 Find Cheap Flights from London Heathrow Airport to New Hampshire

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to New Hampshire departing on 4/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to New Hampshire

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to New Hampshire, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to New Hampshire, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Heathrow to New Hampshire Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to New Hampshire that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to New Hampshire

Wed, 29 Apr - Wed, 20 May
Air Canada Logo
12:40 - 17:45
LHR
-
BOS
10h 05m
1 stop
Air Canada Logo
15:40 - 09:35
BOS
-
LHR
12h 55m
1 stop
£367Air Canada
Tue, 28 Apr - Mon, 18 May
American Airlines Logo
14:10 - 23:52
LHR
-
BOS
14h 42m
1 stop
American Airlines Logo
06:00 - 21:40
BOS
-
LHR
10h 40m
1 stop
£368American Airlines
Mon, 27 Apr - Tue, 19 May
Air Canada Logo
14:10 - 22:39
LHR
-
BOS
13h 29m
1 stop
Air Canada Logo
15:40 - 06:30
BOS
-
LHR
9h 50m
1 stop
£371Air Canada
Thu, 30 Apr - Sun, 10 May
Icelandair Logo
13:05 - 21:45
LHR
-
BOS
13h 40m
1 stop
Icelandair Logo
20:50 - 11:55
BOS
-
LHR
10h 05m
1 stop
£373Icelandair
Wed, 29 Apr - Mon, 18 May
British Airways Logo
14:30 - 16:55
LHR
-
BOS
7h 25mdirect
British Airways Logo
19:35 - 07:10
BOS
-
LHR
6h 35mdirect
£374British Airways
Mon, 27 Apr - Thu, 14 May
Air Canada Logo
08:30 - 18:01
LHR
-
BOS
14h 31m
1 stop
Air Canada Logo
12:30 - 06:35
BOS
-
LHR
13h 05m
1 stop
£374Air Canada
Thu, 30 Apr - Mon, 11 May
British Airways Logo
14:30 - 16:55
LHR
-
BOS
7h 25mdirect
British Airways Logo
21:50 - 09:35
BOS
-
LHR
6h 45mdirect
£380British Airways
Tue, 31 Mar - Mon, 6 Apr
British Airways Logo
14:25 - 16:50
LHR
-
BOS
7h 25mdirect
British Airways Logo
21:50 - 09:35
BOS
-
LHR
6h 45mdirect
£389British Airways
Thu, 23 Apr - Thu, 14 May
United Airlines Logo
10:25 - 16:22
LHR
-
BOS
10h 57m
1 stop
United Airlines Logo
06:00 - 21:35
BOS
-
LHR
10h 35m
1 stop
£391United Airlines
Wed, 13 May - Wed, 20 May
United Airlines Logo
07:25 - 14:01
LHR
-
MHT
35h 36m
2 stops
United Airlines Logo
14:36 - 10:15
MHT
-
LHR
14h 39m
2 stops
£621United Airlines
Booking Insights

KAYAK's insights & trends for Heathrow to New Hampshire flights

Get data-powered insights and trends into flights from Heathrow to New Hampshire to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest time of day to fly to New Hampshire?

The average price for all round-trip flights from London Heathrow Airport to New Hampshire depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to New Hampshire is generally in the evening, when retur flights cost £502 on average. Morning departures are around 7% more expensive than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally at night, which is peak travel time and where the average cost of a ticket is £693.

What is the cheapest month to fly from London Heathrow Airport to New Hampshire?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to New Hampshire, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to New Hampshire is September, when tickets cost £407 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of return tickets is £555 and £541 respectively.

What’s the cheapest day of the week to fly from London Heathrow Airport to New Hampshire?

The average price of all round-trip flights from London Heathrow Airport to New Hampshire clicked on KAYAK for each day over the last 12 months.

For London Heathrow Airport to New Hampshire, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from New Hampshire back to London Heathrow Airport, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to New Hampshire, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to New Hampshire, you should book around 2 weeks before departure, which saves you about 31% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Find deals

Good to know - Cheap tickets from London Heathrow Airport to New Hampshire

Low seasonJanuary
Cheapest flight£305
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (10% more expensive on average)
Flight from London Heathrow Airport to Boston

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport to New Hampshire?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to New Hampshire.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to New Hampshire?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to New Hampshire is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to New Hampshire?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to New Hampshire with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to New Hampshire?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London Heathrow Airport to New Hampshire up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to New Hampshire

 
See real verified KAYAK customer reviews for airlines flying from London to New Hampshire. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to New Hampshire? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
IcelandairOverall score based on 620 reviews
6.2Food
7.2Boarding
7.0Comfort
8.0Crew
7.0Entertainment
Airline reviews

Nice, quick flight. There were lots of empty seats so they told me I could sit next to the emergency exit where I would have more legroom.

10.0 ExcellentAnonymous, Feb 2026
KEF - GOH
Read more Icelandair reviews

Nice, quick flight. There were lots of empty seats so they told me I could sit next to the emergency exit where I would have more legroom.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

Everything you need to know for your flight from Heathrow to New Hampshire

Information on your arrival and departure airports

London Heathrow Airport (LHR)