LHR - BOI

£553 Find Cheap Flights from London Heathrow Airport to Boise

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Boise departing on 8/12. 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, 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 Boise, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Heathrow to Boise (LHR-BOI)

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

Mon, 8 Dec - Mon, 15 Dec
United Airlines Logo
07:40 - 09:59LHR-BOI
33h 19m2 stops
United Airlines Logo
10:40 - 11:15BOI-LHR
17h 35m2 stops
£553United Airlines
Find Deal
Tue, 9 Dec - Mon, 15 Dec
United Airlines Logo
08:30 - 22:45LHR-BOI
21h 15m2 stops
United Airlines Logo
06:20 - 09:40BOI-LHR
20h 20m1 stop
£556United Airlines
Find Deal
Mon, 8 Dec - Mon, 15 Dec
United Airlines Logo
07:40 - 09:59LHR-BOI
33h 19m2 stops
United Airlines Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£557United Airlines
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Lufthansa Logo
11:35 - 18:07LHR-BOI
13h 32m1 stop
Lufthansa Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£568Lufthansa
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Lufthansa Logo
06:35 - 19:43LHR-BOI
20h 08m2 stops
Lufthansa Logo
10:40 - 10:50BOI-LHR
17h 10m2 stops
£570Lufthansa
Find Deal
Mon, 9 Feb - Tue, 17 Feb
Multiple Airlines Logo
14:30 - 16:10LHR-BOI
32h 40m2 stops
Multiple Airlines Logo
14:40 - 09:40BOI-LHR
12h 00m1 stop
£581Multiple Airlines
Find Deal
Mon, 23 Feb - Tue, 10 Mar
Air Canada Logo
18:00 - 21:32LHR-BOI
34h 32m2 stops
Air Canada Logo
05:00 - 07:10BOI-LHR
20h 10m2 stops
£584Air Canada
Find Deal
Mon, 9 Feb - Sun, 15 Feb
Air Canada Logo
13:25 - 21:23LHR-BOI
38h 58m2 stops
Air Canada Logo
17:10 - 11:20BOI-LHR
35h 10m2 stops
£612Air Canada
Find Deal
Wed, 25 Feb - Sat, 7 Mar
Multiple Airlines Logo
13:25 - 23:48LHR-BOI
17h 23m2 stops
Multiple Airlines Logo
05:00 - 06:30BOI-LHR
18h 30m3 stops
£635Multiple Airlines
Find Deal
Mon, 20 Apr - Mon, 27 Apr
Scandinavian Airlines Logo
06:40 - 23:04LHR-BOI
23h 24m2 stops
Scandinavian Airlines Logo
13:00 - 21:35BOI-LHR
25h 35m3 stops
£644Scandinavian Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from £553 (return)
Finnair
Best reviews • 7.6 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
January
Cheapest • 19% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£553
Overall average: £836
United Airlines
Mon 8/12Mon 15/12
LHR - BOI • 2 stops
Cheapest one-way flight
£798
Icelandair
Thu 18/12
LHR - BOI • 2 stops
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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 Heathrow to Boise flights

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

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

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

When flying from London Heathrow Airport to Boise, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

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

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 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 Heathrow Airport to Boise is January, where tickets cost £574 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is £866 and £850 respectively.

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

Low seasonJanuary
Cheapest flight£553
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from London Heathrow Airport to Boise

When to book flights from Heathrow to Boise

Are your dates flexible? Find out the best times to travel from Heathrow 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 London Heathrow Airport to Boise flights

  • What is the cheapest flight from London Heathrow Airport to Boise?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Boise was £798 for a one-way ticket and £553 for a return.

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

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Boise, also known as Boise Air Term. Gowen Fld.

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

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

  • Which airline alliances offer flights from London Heathrow Airport to Boise?

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

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

    The two airlines most popular with KAYAK users for flights from London to Boise are Finnair and Virgin Atlantic. With an average price for the route of £650 and an overall rating of 7.6, Finnair is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £830 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from London Heathrow Airport 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 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 Heathrow Airport 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 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 Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines flying from Heathrow 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 Heathrow 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.
7.6
FinnairOverall score based on 1333 reviews
7.4Comfort
7.6Boarding
6.7Food
6.9Entertainment
8.1Crew
Airline reviews

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

8.0 ExcellentDavid, Oct 2025LHR - BWI
Read more Finnair reviews

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

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.

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

Not enough veg food available for passengers. I actually did not get the veg food and was told it was over, and I starved the entire flight duration.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Flight left on time. Boarding was easy. Arrived to EWR 30 mins early. Luggage was deplaned in good time. Overall a very good experience.

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything went well. I will fly with Lufthansa again. And use Kayak whenever I book flights

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was poor quality and the screens for entertainment didn’t work properly

Food was much better than my outbound flight. On-time. Good service. I had a problem with my entertainment screen, but the attendant fixed it promptly.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

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

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