LON - BOI

£481 Find Cheap Flights from London to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Boise departing on 30/9. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Boise.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Boise.
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Flight Deals

Cheap Flights from London to Boise (LON-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Boise 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 London to Boise

Tue, 30 Sep - Sun, 12 Oct
American Airlines Logo
15:05 - 21:48LGW-BOI
37h 43m2 stops
American Airlines Logo
13:33 - 08:10BOI-LGW
35h 37m2 stops
£532American Airlines
Find Deal
Tue, 30 Sep - Tue, 14 Oct
American Airlines Logo
15:05 - 12:27LGW-BOI
52h 22m2 stops
American Airlines Logo
16:40 - 08:10BOI-LGW
56h 30m2 stops
£534American Airlines
Find Deal
Fri, 21 Nov - Sun, 30 Nov
United Airlines Logo
06:35 - 09:58LHR-BOI
34h 23m2 stops
United Airlines Logo
14:40 - 07:25BOI-LHR
33h 45m1 stop
£539United Airlines
Find Deal
Tue, 28 Oct - Tue, 4 Nov
United Airlines Logo
07:30 - 21:36LHR-BOI
20h 06m2 stops
United Airlines Logo
14:40 - 12:00BOI-LHR
14h 20m1 stop
£541United Airlines
Find Deal
Wed, 12 Nov - Wed, 3 Dec
Lufthansa Logo
08:30 - 21:21LHR-BOI
19h 51m2 stops
Lufthansa Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£542Lufthansa
Find Deal
Mon, 8 Dec - Mon, 15 Dec
Virgin Atlantic Logo
14:45 - 22:16LHR-BOI
14h 31m1 stop
Virgin Atlantic Logo
13:54 - 12:50BOI-LHR
15h 56m1 stop
£561Virgin Atlantic
Find Deal
Fri, 26 Sep - Mon, 6 Oct
Lufthansa Logo
18:00 - 13:33LHR-BOI
26h 33m2 stops
Lufthansa Logo
14:44 - 11:10BOI-LHR
37h 26m2 stops
£631Lufthansa
Find Deal
Thu, 16 Oct - Thu, 23 Oct
Virgin Atlantic Logo
08:40 - 23:54LCY-BOI
22h 14m2 stops
Virgin Atlantic Logo
11:41 - 17:20BOI-LCY
22h 39m2 stops
£702Virgin Atlantic
Find Deal
Tue, 30 Sep - Tue, 14 Oct
Iberia Logo
11:20 - 21:48LCY-BOI
41h 28m2 stops
Iberia Logo
13:33 - 16:30BOI-LCY
43h 57m2 stops
£791Iberia
Find Deal
Tue, 30 Sep - Sun, 12 Oct
Iberia Logo
11:20 - 21:48LCY-BOI
41h 28m2 stops
Iberia Logo
13:33 - 16:30BOI-LCY
43h 57m2 stops
£883Iberia
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from £532 (return)
KLM
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 16% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£532
American Airlines
Tue 30/9Sun 12/10
LGW - BOI • 2 stops
Cheapest one-way flight
£481
Multi-carrier
Tue 30/9
LHR - BOI • 3 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Booking Insights

KAYAK's insights & trends for London to Boise flights

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

How much is a return flight from London to Boise?

What’s the cheapest day of the week to fly from London to Boise?

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

If you are looking for a flight deal from London to Boise, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Boise, Wednesday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from London to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Boise, 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 to Boise is February, where tickets cost £591 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £918 and £865 respectively.

How far in advance should I book a flight from London to Boise?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Boise, 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 the flight from London to Boise, you should book around 2 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know - Cheap tickets from London to Boise

Low seasonMarch
Cheapest flight£481
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (30% more expensive on average)
Flight from London Heathrow Airport to Boise

When to book flights from London to Boise

Are your dates flexible? Find out the best times to travel from London to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Boise

  • What is the cheapest flight from London to Boise?

    In the last 3 days, the lowest price for a flight from London to Boise was £653 for a one-way ticket and £723 for a return.

  • Which airports will I be using when flying from London to Boise?

    On your way to Boise, you’ll fly out from one of these London airports: London City or London Heathrow. You’ll be landing at Boise Air Term. Gowen Fld.

  • Which aircraft models fly most regularly from London to Boise?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to Boise?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and Boise, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from London to Boise, KLM or Finnair?

    The two airlines most popular with KAYAK users for flights from London to Boise are KLM and Finnair. With an average price for the route of £669 and an overall rating of 7.8, KLM is the most popular choice. Finnair is also a great choice for the route, with an average price of £643 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London to Boise?

    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 to Boise.

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

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

  • What is the Hacker Fare option on flights from London to Boise?

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

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

    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 to Boise from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from London to Boise

 
See real verified KAYAK customer reviews for airlines flying from London to Boise. 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 London to Boise? 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.
7.8
KLMOverall score based on 1385 reviews
8.4Crew
7.7Comfort
7.3Food
7.2Entertainment
7.8Boarding
Airline reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

2.0 MediocrePeter, Aug 2025SAN - AMS
Read more KLM reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

temperature was too cold there should be free blankets, seat are very uncomfortable, entertainment is limited.

Basic service for a decent price, all amenities are à la cart

Cabin crew friendlier, they weren't weren't unfriendly, but simply professional and not more

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

The plane needs upgrading, the seats are uncomfortable, we are a family of three and they split us and did nothing to group us together, and the food is horrible compared to other airlines bu

Horrible almost missed my flight because my 1st flight was delayed. Airline crew is so unprofessional. The people on the plane do whatever they want kids running screaming. Will never fly this airline again Suitcases never arrived

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

It was good but I did not appreciate not being able to check in online

Boarding was odd. Gates switched and had to take a bus to the plane. Luggage got lost. Still waiting on one bag. Flight itself was very nice!

Do Not Fly Iberia. Horrible experience. Iberia changes things at random -like the date of the flight and seat you have bought. After buying my flight, they contacted me and told me I had to return a day later. Then when I was boarding the flight, I discovered they had changed my window seat in a row away from the wing, to an aisle seat in front of the toilet! The worse seat on the plane. But it wasn’t just me- a family was scattered all over the plane. I was able to trade my seat because a father was separated from his son. Unfortunately the seat was the window seat directly over the wing, the loudest seat in the plane. I couldn’t sleep, even with noise cancelling earphones. Also, I ordered gluten free meal-which was tasteless and gave me cramps.

Food could have something without dairy, I couldn't eat anything. Tv for both seats was malfunctioning. They have one bottle of ginger ale for entire plane.... and I paid extra for these seats...very disappointed

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

We took two long flights with Lufthansa, both were delayed making us miss our connecting flights. Lufthansa took care of the first one. The second was a switch to United and figuring out how to rebook was not a pleasant experience.

It was chaotic. It was overbooked so we didn't have seats until the end but they turned out to be good seats. The gate was at the end of the airport. We had to get busses to the tarmac and board. It just seemed chaotic. Flight was OK. Food was not so good. Lufthansa used to be such a great airline and now as it's with everything else: If you have money you get comforts but if you don't then you end up below deck with the rest of the cattle.

Welp - they boarded us appropriately...then had us sit on the plane for over two hours before cancelling the flight...which meant another night in Munich. I probably had it a little better than most as over 500 people had to be accommodated/re-booked etc. The next day I boarded the same flight (for which I had now been ticketed 3 straight days) and - with "only" an hour delay, managed to finally get home over 2 days later than scheduled. I haven't flown Lufthansa to Europe in years...and I won't be looking to do so again in the future. To be clear, though, the people I interacted with - flight crew, Service Center, check-in were all professional and courteous - management is clearly to blame for their lack of communication and unpreparedness for when things go wrong.

It was a short flight, everything was good with it.

Flight was delayed over one hour and I had to pay to select my seat, even though my booking supposedly had free selection (I paid extra for this at time of booking)

Both flights were delayed over 1 hour. And I had to pay for seats, even though my reservation supposedly included free seat selection.

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Seat very cramped, could not recline. No cheese with meal. Staff very helpful.

Everything you need to know for your flight from London to Boise

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