Cheap flights from London to Boise from £431

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London to Boise Air Term. Gowen Fld are usually found in February or March, booked 20 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Boise

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 September 2025.

Round-trip from

£487

One-way from

£431

Popular in

July

Cheapest in

February

Average price

£599
31/10-10/11
  • 31/10-10/11
  • 2 total stops
  • 35h 27m total
  • London to Boise
15/12
  • 15/12
  • 3 total stops
  • 37h 09m total
  • London to Boise
Highest demand for flights based on searches. 13% potential increase in price (£81 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from London to Boise

Cheapest flights from London to Boise
Explore the most affordable flight options available from London to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Fri 31/1011:40LHR - BOI
1 stop16h 28mMultiple Airlines
Mon 10/1108:41BOI - LHR
1 stop18h 59mMultiple Airlines
Deal found 15/9£487
Tue 7/1011:15LHR - BOI
2 stops18h 50mMultiple Airlines
Tue 14/1015:37BOI - LHR
1 stop17h 03mMultiple Airlines
Deal found 15/9£493
Fri 31/1006:35LHR - BOI
2 stops45h 01mLufthansa
Fri 7/1114:31BOI - LHR
1 stop12h 09mLufthansa
Deal found 16/9£531
Wed 8/1008:25LHR - BOI
2 stops20h 57mAmerican Airlines
Tue 14/1007:00BOI - LHR
1 stop22h 45mAmerican Airlines
Deal found 15/9£533
Wed 24/915:05LGW - BOI
2 stops53h 12mAmerican Airlines
Sat 4/1013:38BOI - LGW
2 stops59h 32mAmerican Airlines
Deal found 15/9£533
Fri 31/1011:10LHR - BOI
2 stops28h 48mUnited Airlines
Fri 7/1105:00BOI - LHR
1 stop21h 40mUnited Airlines
Deal found 16/9£539
Thu 30/1007:30LHR - BOI
2 stops19h 51mLufthansa
Tue 11/1114:31BOI - LHR
1 stop12h 09mLufthansa
Deal found 15/9£540
Sat 1/1106:50LHR - BOI
2 stops21h 55mUnited Airlines
Sat 8/1106:15BOI - LHR
2 stops16h 40mUnited Airlines
Deal found 17/9£544
Fri 21/1106:35LHR - BOI
2 stops34h 23mUnited Airlines
Sun 30/1105:00BOI - LHR
2 stops20h 30mUnited Airlines
Deal found 17/9£545
Wed 5/1111:10LHR - BOI
2 stops18h 35mUnited Airlines
Wed 12/1108:17BOI - LHR
2 stops15h 23mUnited Airlines
Deal found 16/9£547
Mon 6/1016:05LHR - BOI
2 stops37h 47mVirgin Atlantic
Thu 16/1014:00BOI - LHR
1 stop14h 20mVirgin Atlantic
Deal found 17/9£548
Thu 9/1015:05LGW - BOI
2 stops38h 19mAmerican Airlines
Mon 13/1013:26BOI - LGW
2 stops35h 44mAmerican Airlines
Deal found 15/9£561

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 18 September 2025.
Use the filters below to find and compare flights from London to Boise that are best for you.

Fly from

London

Fly to

Boise

Route

Depart

Return

Price

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 21/11

06:35-09:58

2 stops34h 23m

Boise Air Term. Gowen Fld

Sun 30/11

06:20-07:25

1 stop18h 05m

£540

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Mon 15/12

06:20-08:25

2 stops19h 05m

£540

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 1/11

06:50-22:45

2 stops21h 55m

Boise Air Term. Gowen Fld

Sat 8/11

14:40-12:00

1 stop14h 20m

£544

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 6/10

16:05-22:52

2 stops37h 47m

Boise Air Term. Gowen Fld

Thu 16/10

14:00-11:20

1 stop14h 20m

£548

LondonBoise

LCY - BOI

LCYBOI

London City

Tue 7/10

08:45-23:44

3 stops21h 59m

Boise Air Term. Gowen Fld

Tue 14/10

09:45-12:30

2 stops19h 45m

£561

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 6/10

13:25-20:16

1 stop13h 51m

Boise Air Term. Gowen Fld

Mon 13/10

13:00-09:50

1 stop13h 50m

£562

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 28/9

10:35-19:15

1 stop15h 40m

Boise Air Term. Gowen Fld

Wed 8/10

14:39-09:40

1 stop12h 01m

£562

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 28/9

10:35-19:15

1 stop15h 40m

Boise Air Term. Gowen Fld

Mon 6/10

14:39-09:40

1 stop12h 01m

£562

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 30/10

12:00-09:58

2 stops27h 58m

Boise Air Term. Gowen Fld

Sat 8/11

14:31-09:40

1 stop12h 09m

£562

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 4/10

11:25-22:30

1 stop18h 05m

Boise Air Term. Gowen Fld

Thu 16/10

14:39-09:40

1 stop12h 01m

£562

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 34 results
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Best time to book a flight from London to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from London 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 London to Boise

How far ahead should I book a flight from London to Boise?

Use this chart to determine the optimal time to book a return flight from London to Boise. Price data was last updated on 12 September 2025.

To ensure you get the cheapest price possible for a flight from London to Boise, you should look to book at least 20 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from London to Boise (average of £754). Flying from London to Boise in August is currently the most expensive (average of £1,152). 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 LON to BOI?

Find hourly flight availability from London 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 18 September 2025.

It’s typically best to fly out from London to Boise at midday. Doing so could potentially save you 24% on the flight price compared to flying in the evening, which is usually more expensive.

What’s the top stopover airport for flights from London to Boise?

Share of one-stop return flights from London to Boise chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Denver (DEN) – chosen by Cheapflights users on 49% of one-stop itineraries from London to Boise on Cheapflights.

What’s the cheapest stopover airport for flights from London to Boise?

Average return fare for one-stop flights from London to Boise, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Salt Lake City (SLC) is the most affordable one-stop option, with an average return flight price of £586.

What’s the fastest stopover option from London to Boise?

Shortest average travel time for one-stop one-way flights from London to Boise, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Salt Lake City (SLC) have the shortest average one-way travel time for one-stop routes: 12h 57m.

Which airport typically offers the quickest stopover for flights from London to Boise?

Average stopover duration for one-stop one-way flights from London to Boise, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 26m.

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 18 September 2025.
See what other customers who have flown with KLM, United Airlines, andVirgin Atlantic from London 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.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Boarding

7.8

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

Find useful and relevant information for your journey from London 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 London?

    Located just 3.3 mi from the city center, Boise Air Term. Gowen Fld is the airport most travelers will use when flying to Boise from London. Booking flights from London to Air Term. Gowen Fld (BOI) should be relatively easy as there are 0 daily inbound flights from London from 5 different airlines.

  • How long is the flight from London to Boise?

    Departing from London to Boise will take you 17h 56m. London and Boise are separated by a distance of 4843 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Boise round-trip?

    According to our current data, Finnair (£509), KLM (£522), and United Airlines (£531) offers the cheapest pricing from London to Boise. Finnair is priced at 27% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from London to Boise?

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

    Yes. In addition to deals on London to Boise flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Boise?

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

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

    Yes. Cheapflights offers flight deals from London 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 London to Boise?

    Currently, October is the cheapest month in which you can book a flight from London to Boise (average of £754). Flying from London to Boise in August is currently the most expensive (average of £1,152). 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

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Top 5 airlines flying from London to Boise

Discover the top 5 airlines that operate flights from London 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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£509Average£627FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£522Average£619FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£531Average£658FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£533Average£613FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£590Average£740FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to Boise?

Deals for London to Boise flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Boise from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Boise flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on London to Boise flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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