LON - BOI

£379 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 7/5. 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 Boise

 
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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Everything you should know

Cheapest return fare
£566
Typical prices: £597-£657
United Airlines
Mon 20/4Mon 27/4
LHR - BOI • 2 stops
Cheapest one-way flight
£379
Typical prices: £620-£673
Multiple Airlines
Thu 7/5
LHR - BOI • 3 stops
Top airlines
United Airlines
Cheapest • from £566 (return)
KLM
Best reviews • 7.7 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 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 20% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
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

Mon, 20 Apr - Mon, 27 Apr
United Airlines Logo
09:00 - 22:35
LHR
-
BOI
20h 35m
2 stops
United Airlines Logo
06:15 - 07:25
BOI
-
LHR
18h 10m
1 stop
£566United Airlines
Fri, 27 Feb - Mon, 9 Mar
United Airlines Logo
06:30 - 20:55
LHR
-
BOI
21h 25m
2 stops
United Airlines Logo
10:21 - 09:40
BOI
-
LHR
17h 19m
1 stop
£577United Airlines
Thu, 26 Feb - Sun, 1 Mar
Lufthansa Logo
07:30 - 21:32
LHR
-
BOI
21h 02m
2 stops
Lufthansa Logo
08:05 - 05:55
BOI
-
LHR
14h 50m
1 stop
£579Lufthansa
Thu, 26 Feb - Sun, 1 Mar
Lufthansa Logo
08:30 - 21:32
LHR
-
BOI
20h 02m
2 stops
Lufthansa Logo
14:40 - 17:05
BOI
-
LHR
19h 25m
2 stops
£582Lufthansa
Thu, 26 Feb - Sun, 1 Mar
Lufthansa Logo
09:30 - 21:32
LHR
-
BOI
19h 02m
2 stops
Lufthansa Logo
08:05 - 11:15
BOI
-
LHR
20h 10m
1 stop
£586Lufthansa
Mon, 20 Apr - Mon, 27 Apr
United Airlines Logo
13:05 - 22:03
LHR
-
BOI
15h 58m
1 stop
United Airlines Logo
09:26 - 07:25
BOI
-
LHR
14h 59m
1 stop
£590United Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
11:20 - 23:00
LHR
-
BOI
17h 40m
1 stop
Multiple Airlines Logo
19:05 - 16:50
BOI
-
LHR
15h 45m
1 stop
£593Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr
Multiple Airlines Logo
15:40 - 22:57
LGW
-
BOI
38h 17m
2 stops
Multiple Airlines Logo
20:10 - 14:40
BOI
-
LGW
35h 30m
2 stops
£724Multiple Airlines
Tue, 30 Jun - Wed, 15 Jul
Icelandair Logo
13:00 - 22:21
LGW
-
BOI
16h 21m
2 stops
Icelandair Logo
13:22 - 14:40
BOI
-
LGW
18h 18m
2 stops
£797Icelandair
Mon, 29 Jun - Tue, 14 Jul
Icelandair Logo
15:40 - 18:01
LGW
-
BOI
33h 21m
2 stops
Icelandair Logo
16:50 - 14:40
BOI
-
LGW
38h 50m
2 stops
£839Icelandair
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?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Boise departing in April.

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 January, where tickets cost £565 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,130 and £863 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 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know - Cheap tickets from London to Boise

Low seasonJanuary
Cheapest flight£379
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (23% 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 £379 for a one-way ticket and £566 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?

    SkyTeam, and Star Alliance 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 Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from London to Boise are KLM and Virgin Atlantic. With an average price for the route of £676 and an overall rating of 7.7, KLM is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £733 and an overall rating of 7.5.

  • 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.
7.7
KLMOverall score based on 1443 reviews
7.8Boarding
7.6Comfort
7.1Entertainment
8.4Crew
7.3Food
Airline reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

4.0 OkayShereen, Dec 2025
Read more KLM reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

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.

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

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.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

I so appreciate the crew members on each flight of United. They are outstanding.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

Lufthansa flight LH04414 from Munich to Washington DC, was fine. Efficient and safe!

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

Bumpy ride, not Lufthansa‘s fault. Crew managed a situation over a back rest to far down well. It was two iles behind me. The person putting the seat down, against the other person’s knees, was quite rude and belligerent and needed to be told in a no nonsense matter to stopp. Male flight attendant did good job.

Patrick and the whole crew were amazing! Hope to have this team for all my European trips.

This review is based on 2 things: 1. The lack of hygiene on the plane. 2. William - the head flight attendant. The lack of cleanliness on the plane upon arrival was appalling. Being given a sanitizing wipe upon boarding of the plane is shocking when you consider the cost of a business class flight. UA expects me to do their job and clean all the bread, food and debris left from previous guests. Does this sound normal to you. The seat, the food table and the sides were full of crumbs, chocolate and dirt. When I told the flight attendant they just gave me more wipes so I could clean it myself. Secondly, William the business cabin head flight attendant was so busy flirting with a couple in the front that his attention to the other guests was minimal. He continuously asked them if they were ok or if they needed anything and it didn’t matter if the rest of us needed anything. And if you are the lead attendant shouldn’t you be checking if the bathrooms in business class are clean and needing toilet paper. There were 2 bathrooms in business. Halfway through the flight the first bathroom was closed and the second bathroom was dirty and had no toilet paper one hour and a half before the flight landed. He needs additional training on prioritizing things. He should care less about flirting and more about his work

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

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

Information on your arrival and departure airports