$418 Find Cheap Flights from the United Kingdom 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 to Boise departing on 9/15. 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

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 for flights to Boise, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Boise, as well as popular online travel agencies
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Cheap Flights from the United Kingdom to Boise

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from the United Kingdom 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 round-trip flight deals from the United Kingdom to Boise

Mon, Sep 8 - Mon, Nov 10
United Airlines Logo
3:50 pm - 11:31 amLHR-BOI
26h 41m2 stops
United Airlines Logo
10:40 am - 12:00 pmBOI-LHR
18h 20m1 stop
$771United Airlines
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Mon, Sep 8 - Mon, Nov 10
United Airlines Logo
3:50 pm - 11:31 amLHR-BOI
26h 41m2 stops
United Airlines Logo
10:39 am - 11:15 amBOI-LHR
17h 36m2 stops
$786United Airlines
Find Deal
Fri, Sep 26 - Mon, Oct 6
Lufthansa Logo
6:00 pm - 11:39 amLHR-BOI
24h 39m2 stops
Lufthansa Logo
2:39 pm - 8:40 pmBOI-LHR
23h 01m2 stops
$799Lufthansa
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Thu, Aug 14 - Thu, Aug 21
 Logo
10:45 am - 10:54 pmLGW-BOI
19h 09m1 stop
 Logo
8:10 am - 10:55 amBOI-LGW
19h 45m1 stop
Thu, Aug 14 - Thu, Aug 21
 Logo
10:45 am - 11:58 pmLGW-BOI
20h 13m2 stops
 Logo
8:10 am - 10:55 amBOI-LGW
19h 45m1 stop
Fri, Nov 21 - Sun, Nov 30
Lufthansa Logo
10:05 am - 1:44 pmLHR-BOI
34h 39m1 stop
Lufthansa Logo
5:00 am - 9:40 amBOI-LHR
21h 40m1 stop
$827Lufthansa
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Mon, Sep 29 - Thu, Oct 2
Delta Logo
9:55 am - 10:22 pmLHR-BOI
19h 27m2 stops
Delta Logo
7:30 am - 2:15 pmBOI-LHR
23h 45m1 stop
$851Delta
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Mon, Sep 29 - Thu, Oct 2
Delta Logo
5:25 pm - 11:52 pmLHR-BOI
13h 27m1 stop
Delta Logo
3:45 pm - 2:35 pmBOI-LHR
15h 50m1 stop
$870Delta
Find Deal
Mon, Sep 8 - Mon, Nov 10
Scandinavian Airlines Logo
6:40 am - 10:57 pmLHR-BOI
23h 17m2 stops
Scandinavian Airlines Logo
3:05 pm - 9:35 pmBOI-LHR
23h 30m3 stops
$920Scandinavian Airlines
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Mon, Sep 8 - Mon, Nov 10
Scandinavian Airlines Logo
6:40 am - 10:57 pmLHR-BOI
23h 17m3 stops
Scandinavian Airlines Logo
3:05 pm - 9:35 pmBOI-LHR
23h 30m3 stops
$954Scandinavian Airlines
Find Deal
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KAYAK's insights & trends for flights to Boise

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

What is the cheapest month to fly to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Boise is November, where tickets cost $792 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from the United Kingdom is $1,270 and $1,176 respectively. For one-way flights, the best month to travel is January with an average price of $749.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.


Good to know

Low seasonFebruary
High seasonJune
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 1% increase in price.

FAQs - booking Boise flights

  • How far is Boise Air Term. Gowen Fld Airport from central Boise?

    The distance between Boise Air Term. Gowen Fld Airport and downtown Boise is 3 miles.

  • What is the name of Boise’s airport?

    When flying to Boise, you'll arrive at Boise Air Term. Gowen Fld Airport (BOI). The airport is also known as Air Term Gowen Fld, Air Term. Gowen Fld, or Boise.

  • What is the cheapest day to fly to Boise?

    Based on KAYAK data, the cheapest day to fly to Boise is Thursday where round-trip tickets can be as cheap as $907. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,365 on average.

  • How does KAYAK find such low prices on flights 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 to Boise.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boise 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 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Boise?

    The cheapest time of day to fly to Boise is generally in the afternoon, when round-trip flights cost $780 on average. The most expensive time of day to fly to Boise is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,267.

  • How many direct flights to Boise are there each week?

    Each week there are around 594 direct flights from within United Kingdom to Boise. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Boise

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boise flight deals.

Reviews of the top airline flying from the United Kingdom to Boise

 
See real verified KAYAK customer reviews for airlines flying to Boise. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to Boise. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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.
7.4
United AirlinesOverall score based on 8852 reviews
7.0Entertainment
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
Airline reviews

Survey sent before we actually left. Delay after delay. Now a crew problem.

2.0 MediocreBenjamin, Jul 2025EWR - MSP
Read more United Airlines reviews

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Very rough getting into denver. my kid threw up it was so rough.

We were given vouchers we couldn’t use with a 5.5 hour delay

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

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