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$520+ Cheap flights from the United Kingdom to Boise (BOI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from United Kingdom to Boise

Cheapest flights from United Kingdom to Boise
Explore the most affordable flight options available from United Kingdom to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 amLHR - BOI
2 stops21h 56mLufthansa
Mon 12/2210:42 amBOI - LHR
1 stop15h 58mLufthansa
Deal found 12/16$1,800
This Ovago deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:15 amLHR - BOI
1 stop18h 47mIberia
Mon 12/227:00 amBOI - LHR
1 stop20h 00mIberia
Deal found 12/16$1,831
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:00 pmLHR - BOI
2 stops25h 39mMultiple Airlines
Mon 12/2210:42 amBOI - LHR
3 stops17h 38mMultiple Airlines
Deal found 12/16$4,980

Find flight deals from United Kingdom to Boise

Keep the following information in mind while searching for United Kingdom to Boise flight deals. Data was last updated December 17, 2025.

Round-trip from

$642

One-way from

$520
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,489
From United Kingdom to Boise Air Term. Gowen Fld
Search Deals
One-way flight from United Kingdom to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom to Boise that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from the United Kingdom to Boise that are best for you.

Fly from

United Kingdom

Fly to

Boise

Route

Depart

Return

Price

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 2/7

10:25 am-7:13 pm

1 stop15h 48m

Boise Air Term. Gowen Fld

Sun 2/15

8:05 am-5:55 am

1 stop14h 50m

$642

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 1/29

12:15 pm-11:59 pm

2 stops18h 44m

Boise Air Term. Gowen Fld

Thu 2/5

11:35 am-7:30 pm

2 stops24h 55m

$657

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

9:00 am-10:35 pm

2 stops20h 35m

Boise Air Term. Gowen Fld

Mon 4/27

12:30 pm-11:10 am

1 stop15h 40m

$762

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 3/18

11:10 am-9:29 pm

2 stops40h 19m

Boise Air Term. Gowen Fld

Tue 5/19

8:20 am-11:10 am

1 stop19h 50m

$765

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/27

6:35 am-11:48 pm

2 stops24h 13m

Boise Air Term. Gowen Fld

Mon 3/9

10:21 am-9:40 am

1 stop17h 19m

$786

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/20

6:35 am-10:12 am

2 stops34h 37m

Boise Air Term. Gowen Fld

Mon 3/2

6:55 pm-12:00 pm

1 stop34h 05m

$786

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 1/22

6:35 am-6:07 pm

2 stops18h 32m

Boise Air Term. Gowen Fld

Mon 1/26

8:15 am-7:55 am

1 stop16h 40m

$786

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 4/20

3:40 pm-10:21 pm

2 stops37h 41m

Boise Air Term. Gowen Fld

Mon 4/27

5:30 pm-2:40 pm

2 stops38h 10m

$855

ManchesterBoise

MAN - BOI

MANBOI

Manchester

Tue 2/10

12:35 pm-11:01 pm

2 stops17h 26m

Boise Air Term. Gowen Fld

Mon 2/16

6:28 am-4:40 pm

2 stops27h 12m

$905

EdinburghBoise

EDI - BOI

EDIBOI

Edinburgh Turnhouse

Fri 3/6

9:25 am-10:56 pm

2 stops20h 31m

Boise Air Term. Gowen Fld

Mon 3/9

6:55 pm-6:55 am

2 stops30h 00m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 44 results
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Best time to book a flight from United Kingdom to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Boise

What is the cheapest month to book a flight from United Kingdom to Boise?

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Boise (average of $685). Flying from United Kingdom to Boise in July is currently the most expensive (average of $905). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boise from United Kingdom?

    For a flight from United Kingdom to Boise, you will be flying into Air Term. Gowen Fld. Boise Air Term. Gowen Fld (BOI) is just 3.3 mi from the center of the city.

  • How long is the flight from United Kingdom to Boise?

    Airlines like United Airlines, Icelandair, and Iberia fly from United Kingdom to Boise in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 21h 53m. There are 4829 mi between United Kingdom and Boise. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from United Kingdom to Boise?

    When deciding which route to take from United Kingdom to Boise consider London Heathrow - Boise Air Term. Gowen Fld, London Gatwick - Boise Air Term. Gowen Fld or London City - Boise Air Term. Gowen Fld as they are the most popular.

  • Can I find deals for flights from United Kingdom to Boise that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Boise.

  • Can I find deals for business class flights from United Kingdom to Boise?

    Yes. Cheapflights offers flight deals from United Kingdom to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Boise?

    Currently, March is the cheapest month in which you can book a flight from United Kingdom to Boise (average of $685). Flying from United Kingdom to Boise in July is currently the most expensive (average of $905). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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