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Cheap flights from the United Kingdom to Boise from £425

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
3 May — 10 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Boise

Enter your travel dates to find the best prices.

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 3 April 2026.

Tue 6/1014:50
LHR
-
BOI
1 stop13h 26m
Lufthansa
Wed 21/1012:29
BOI
-
LHR
1 stop16h 26m
Lufthansa
Deal found 29/3£649
Tue 6/1007:25
LHR
-
BOI
2 stops17h 30m
United Airlines
Wed 21/1008:40
BOI
-
LHR
1 stop15h 05m
United Airlines
Deal found 30/3£662
Wed 7/1014:50
LHR
-
BOI
1 stop13h 26m
United Airlines
Thu 22/1006:20
BOI
-
LHR
1 stop18h 05m
United Airlines
Deal found 30/3£686
Tue 6/1015:05
LHR
-
BOI
2 stops37h 10m
Air Canada
Sun 18/1006:20
BOI
-
LHR
2 stops44h 40m
Air Canada
Deal found 30/3£689
Fri 11/910:50
LHR
-
BOI
2 stops20h 00m
United Airlines
Tue 15/905:00
BOI
-
LHR
2 stops17h 55m
United Airlines
Deal found 2/4£691
Fri 25/909:30
LHR
-
BOI
2 stops19h 52m
United Airlines
Tue 29/907:00
BOI
-
LHR
2 stops15h 55m
United Airlines
Deal found 30/3£692
Mon 5/1017:40
LHR
-
BOI
2 stops28h 16m
Air Canada
Tue 20/1011:45
BOI
-
LHR
2 stops18h 35m
Air Canada
Deal found 30/3£692
Mon 5/1017:40
LHR
-
BOI
2 stops28h 16m
Air Canada
Sun 18/1006:20
BOI
-
LHR
2 stops44h 40m
Air Canada
Deal found 30/3£695
Tue 21/415:40
LGW
-
BOI
2 stops38h 22m
Icelandair
Tue 12/516:38
BOI
-
LGW
2 stops15h 02m
Icelandair
Deal found 2/4£705
Tue 14/415:40
LGW
-
BOI
2 stops38h 17m
Icelandair
Tue 12/516:38
BOI
-
LGW
2 stops15h 02m
Icelandair
Deal found 2/4£708
Tue 14/415:40
LGW
-
BOI
2 stops38h 17m
Icelandair
Thu 30/416:38
BOI
-
LGW
2 stops36h 07m
Icelandair
Deal found 2/4£709
Tue 14/415:40
LGW
-
BOI
2 stops38h 17m
Multiple Airlines
Tue 28/418:08
BOI
-
LGW
2 stops34h 37m
Multiple Airlines
Deal found 2/4£711

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 3 April 2026.

Round-trip from

£686

One-way from

£425

Popular in

December

Cheapest in

January

Average price

£636
United Airlines
  • United Airlines
  • 27/4-14/5
  • 2 total stops
  • 28h 22m total
  • United Kingdom to Boise
Search Deals
15/6
  • 15/6
  • 3 total stops
  • 43h 03m total
  • United Kingdom to Boise
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 3 April 2026.
Use the filters below to find and compare flights from the United Kingdom to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 11/9

10:50-11:00

2 stops31h 10m

Boise Air Term. Gowen Fld

Tue 15/9

17:44-12:25

1 stop11h 41m

£691

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 25/9

09:30-22:22

2 stops19h 52m

Boise Air Term. Gowen Fld

Tue 29/9

07:00-05:55

2 stops15h 55m

£692

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Tue 14/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Tue 28/4

18:08-11:45

2 stops34h 37m

£711

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 6/9

11:25-17:53

1 stop13h 28m

Boise Air Term. Gowen Fld

Sun 20/9

19:01-11:10

1 stop33h 09m

£717

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

10:20-22:57

2 stops19h 37m

Boise Air Term. Gowen Fld

Mon 27/4

14:57-18:50

2 stops20h 53m

£732

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Thu 16/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Tue 5/5

16:38-14:40

2 stops15h 02m

£764

EdinburghBoise

EDI - BOI

EDIBOI

Edinburgh Turnhouse

Mon 27/4

12:30-11:06

2 stops29h 36m

Boise Air Term. Gowen Fld

Mon 4/5

16:20-08:25

2 stops33h 05m

£764

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Wed 15/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Thu 7/5

16:38-14:40

2 stops15h 02m

£771

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 13/5

07:25-21:17

2 stops20h 52m

Boise Air Term. Gowen Fld

Wed 20/5

12:30-14:10

1 stop18h 40m

£774

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Tue 21/4

15:40-23:02

2 stops38h 22m

Boise Air Term. Gowen Fld

Fri 8/5

12:15-14:40

2 stops19h 25m

£804

Flights are sorted by cheapest return flights first.

Deals found on 2/4

Showing 1-10 of 51 resultsSorted by cheapest first
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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 return 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 £518). Flying from United Kingdom to Boise in February is currently the most expensive (average of £691). 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.

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated 3 April 2026.
See what other customers who have flown with KLM,Virgin Atlantic, andUnited Airlines from the United Kingdom to Boise have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,485 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
685 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,535 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.0
Good
630 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,885 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Overall

7.7

Entertainment

7.1

Crew

8.4

Boarding

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly into if you book a flight from United Kingdom to Boise. It is only a 3.3 mi journey from Air Term. Gowen Fld (BOI) to Boise’s city center.

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

    There are many flights that can get you from United Kingdom to Boise in 19h 07m. Fly via United Airlines, Icelandair, or Lufthansa to get the fastest option. There are 4843 mi between United Kingdom and Boise. This flight may include one or multiple stops.

  • 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 holiday 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 £518). Flying from United Kingdom to Boise in February is currently the most expensive (average of £691). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from United Kingdom to Boise

Discover the top 7 airlines that operate flights from United Kingdom to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£476Average£732FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£515Average£682FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£608Average£804FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£611Average£935FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£711Average£805FlexibilityNo cancel feeOn-time75%
Search KLM flights
IcelandairCheapest£713Average£743FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
DeltaCheapest£808Average£1,181FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Boise?

Cheapflights makes it easy to find United Kingdom to Boise flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Boise?

Millions of users choose and trust Cheapflights to book the best flight deals from United Kingdom to Boise for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from United Kingdom to Boise with no change fees?

Yes, we can. To see specific flights from United Kingdom to Boise with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to Boise become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Boise from United Kingdom today and book when prices fit your budget.

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