Find flights
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Boise from £422

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 26 November 2025.

Round-trip from

£558

One-way from

£422

Popular in

December

Cheapest in

September

Average price

£647
United Airlines
  • United Airlines
  • 9/2-16/2
  • 3 total stops
  • 29h 37m total
  • United Kingdom to Boise
Search Deals
19/3
  • 19/3
  • 3 total stops
  • 44h 42m total
  • United Kingdom to Boise
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 26 November 2025.

Tue 9/1211:55LHR - BOI
1 stop17h 30mFinnair
Sun 14/1206:44BOI - LHR
1 stop20h 16mFinnair
Deal found 25/11£670
Mon 8/1208:20LHR - BOI
1 stop21h 05mMultiple Airlines
Mon 15/1216:20BOI - LHR
1 stop12h 00mMultiple Airlines
Deal found 26/11£690
Tue 9/1214:45LHR - BOI
1 stop14h 31mVirgin Atlantic
Mon 15/1213:54BOI - LHR
1 stop15h 56mVirgin Atlantic
Deal found 25/11£695
Mon 8/1214:45LHR - BOI
1 stop35h 06mVirgin Atlantic
Tue 16/1214:04BOI - LHR
1 stop33h 21mVirgin Atlantic
Deal found 24/11£700
Tue 9/1210:05LHR - BOI
1 stop32h 29mLufthansa
Sun 14/1219:11BOI - LHR
2 stops29h 44mLufthansa
Deal found 25/11£705
Tue 9/1212:15LHR - BOI
2 stops16h 30mMultiple Airlines
Mon 15/1211:45BOI - LHR
2 stops16h 05mMultiple Airlines
Deal found 24/11£711
Tue 9/1210:05LHR - BOI
1 stop20h 39mLufthansa
Mon 15/1219:11BOI - LHR
2 stops19h 09mLufthansa
Deal found 24/11£712
Tue 9/1206:35LHR - BOI
2 stops18h 32mUnited Airlines
Mon 15/1212:16BOI - LHR
1 stop12h 39mUnited Airlines
Deal found 24/11£718
Mon 8/1207:40LHR - BOI
2 stops33h 19mUnited Airlines
Mon 15/1209:40BOI - LHR
2 stops18h 40mUnited Airlines
Deal found 24/11£723
Tue 9/1212:20LHR - BOI
1 stop16h 56mVirgin Atlantic
Sun 14/1205:35BOI - LHR
1 stop18h 30mVirgin Atlantic
Deal found 24/11£730
Mon 8/1206:30LHR - BOI
2 stops16h 32mKLM
Tue 16/1212:55BOI - LHR
1 stop14h 05mKLM
Deal found 24/11£732
Thu 11/1211:55LGW - BOI
2 stops18h 15mMultiple Airlines
Fri 9/109:02BOI - LGW
2 stops18h 53mMultiple Airlines
Deal found 24/11£732

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 26 November 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

Mon 9/2

06:30-19:51

2 stops20h 21m

Boise Air Term. Gowen Fld

Thu 19/2

08:00-11:15

1 stop20h 15m

£558

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/2

07:30-18:07

2 stops17h 37m

Boise Air Term. Gowen Fld

Mon 16/2

14:40-14:45

2 stops17h 05m

£562

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 11/2

13:35-22:57

1 stop16h 22m

Boise Air Term. Gowen Fld

Wed 18/2

08:00-05:55

1 stop14h 55m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 11/2

10:05-21:23

1 stop18h 18m

Boise Air Term. Gowen Fld

Thu 19/2

10:53-07:25

1 stop13h 32m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 10/2

13:45-23:48

1 stop17h 03m

Boise Air Term. Gowen Fld

Thu 19/2

13:44-12:00

1 stop15h 16m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/2

10:05-21:23

1 stop18h 18m

Boise Air Term. Gowen Fld

Tue 17/2

10:53-07:25

1 stop13h 32m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/2

10:05-21:23

1 stop18h 18m

Boise Air Term. Gowen Fld

Wed 18/2

10:53-12:00

1 stop18h 07m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 11/2

13:45-21:23

1 stop14h 38m

Boise Air Term. Gowen Fld

Mon 16/2

10:25-09:40

1 stop16h 15m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 20/2

06:35-10:12

2 stops34h 37m

Boise Air Term. Gowen Fld

Mon 2/3

06:25-06:40

2 stops17h 15m

£587

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 27/2

11:10-23:48

2 stops19h 38m

Boise Air Term. Gowen Fld

Mon 9/3

08:39-07:25

1 stop16h 46m

£587

Flights are sorted by cheapest return flights first.

Deals found on 25/11

Showing 1-10 of 38 results
1
2
3
4

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, September is the cheapest month in which you can book a flight from United Kingdom to Boise (average of £513). Flying from United Kingdom to Boise in July is currently the most expensive (average of £672). 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.

What is the cheapest time of day to fly from GB to BOI?

Find hourly flight availability from United Kingdom to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 November 2025.

When flying from United Kingdom to Boise, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 14% versus a flight in the afternoon.

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 26 November 2025.
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
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,422 reviews
KLM
7.7
Good
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
United Airlines
7.4
Good
9,046 reviews
KLM
7.7
Good
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.0
Good
581 reviews
KLM
7.7
Good
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,594 reviews
KLM
7.7
Good
1,422 reviews
Check prices

Entertainment

7.1

Food

7.2

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 17h 37m. Fly via United Airlines, Lufthansa, or Icelandair to get the fastest option. There are 4829 mi between United Kingdom and Boise. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to Boise one-way?

    The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as £507. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from United Kingdom to Boise for a low price.

  • 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 Edinburgh Turnhouse - 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, September is the cheapest month in which you can book a flight from United Kingdom to Boise (average of £513). Flying from United Kingdom to Boise in July is currently the most expensive (average of £672). 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 9 airlines flying from United Kingdom to Boise

Discover the top 9 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 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£546Average£713FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£554Average£703FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£563Average£720FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£612Average£816FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£615Average£955FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£639Average£847FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£662Average£746FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£670Average£786FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£700Average£821FlexibilityNo cancel feeOn-time75%
Search KLM 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.