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Cheap flights from London to Boise from £381

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
17 May — 24 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Boise

Enter your travel dates to find the best prices.

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 17 April 2026.

Wed 16/910:50
LHR
-
BOI
2 stops20h 00m
United Airlines
Sun 20/919:01
BOI
-
LHR
1 stop29h 24m
United Airlines
Deal found 12/4£655
Sat 5/906:40
LHR
-
BOI
2 stops18h 55m
Scandinavian Airlines
Sat 19/910:23
BOI
-
LHR
2 stops24h 17m
Scandinavian Airlines
Deal found 14/4£690
Sat 31/1011:10
LHR
-
BOI
2 stops37h 45m
Lufthansa
Sat 14/1117:22
BOI
-
LHR
2 stops59h 28m
Lufthansa
Deal found 14/4£701
Sat 21/1107:30
LHR
-
BOI
2 stops20h 46m
Lufthansa
Sat 5/1217:22
BOI
-
LHR
2 stops59h 28m
Lufthansa
Deal found 14/4£702
Fri 9/1014:50
LHR
-
BOI
1 stop13h 26m
Lufthansa
Fri 23/1010:39
BOI
-
LHR
1 stop16h 01m
Lufthansa
Deal found 14/4£711
Sat 30/506:40
LHR
-
BOI
2 stops20h 54m
Scandinavian Airlines
Sat 6/612:15
BOI
-
LHR
3 stops23h 35m
Scandinavian Airlines
Deal found 15/4£721
Sun 31/514:00
LGW
-
BOI
2 stops40h 58m
Multiple Airlines
Sun 7/608:38
BOI
-
LGW
1 stop19h 17m
Multiple Airlines
Deal found 16/4£784
Sat 10/1008:25
LCY
-
BOI
2 stops21h 30m
Multiple Airlines
Sat 24/1008:18
BOI
-
LCY
2 stops22h 57m
Multiple Airlines
Deal found 14/4£797
Mon 1/614:00
LGW
-
BOI
2 stops38h 20m
Multiple Airlines
Mon 15/608:03
BOI
-
LGW
1 stop19h 52m
Multiple Airlines
Deal found 16/4£807
Sat 5/915:40
LGW
-
BOI
2 stops37h 53m
Icelandair
Sat 19/916:17
BOI
-
LGW
2 stops15h 23m
Icelandair
Deal found 14/4£810
Mon 1/615:40
LGW
-
BOI
2 stops33h 34m
Icelandair
Tue 16/620:47
BOI
-
LGW
2 stops31h 58m
Icelandair
Deal found 16/4£815
Fri 9/1010:20
LGW
-
BOI
2 stops19h 27m
Multiple Airlines
Fri 23/1013:00
BOI
-
LGW
2 stops18h 40m
Multiple Airlines
Deal found 14/4£828

Find 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 17 April 2026.

Round-trip from

£655

One-way from

£381

Popular in

December

Cheapest in

January

Average price

£619
United Airlines
  • United Airlines
  • 16/9-20/9
  • 3 total stops
  • 49h 24m total
  • London to Boise
Search Deals
3/6
  • 3/6
  • 2 total stops
  • 29h 30m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£29 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 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 17 April 2026.
Use the filters below to find and compare flights from London to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 16/9

10:50-23:50

2 stops20h 00m

Boise Air Term. Gowen Fld

Sun 20/9

10:37-07:45

2 stops38h 08m

£655

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/10

07:25-17:55

2 stops17h 30m

Boise Air Term. Gowen Fld

Fri 23/10

05:00-06:55

2 stops18h 55m

£714

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 5/5

13:05-23:02

2 stops16h 57m

Boise Air Term. Gowen Fld

Wed 13/5

16:19-20:20

2 stops21h 01m

£751

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sun 31/5

14:00-23:58

2 stops40h 58m

Boise Air Term. Gowen Fld

Sun 7/6

08:38-10:55

1 stop19h 17m

£784

LondonBoise

LCY - BOI

LCYBOI

London City

Sat 10/10

08:25-22:55

2 stops21h 30m

Boise Air Term. Gowen Fld

Sat 24/10

08:18-14:15

2 stops22h 57m

£797

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 1/6

14:00-21:20

2 stops38h 20m

Boise Air Term. Gowen Fld

Mon 15/6

08:03-10:55

1 stop19h 52m

£807

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Fri 9/10

10:20-22:47

2 stops19h 27m

Boise Air Term. Gowen Fld

Fri 23/10

13:00-14:40

2 stops18h 40m

£828

LondonBoise

LCY - BOI

LCYBOI

London City

Tue 5/5

09:20-23:00

2 stops20h 40m

Boise Air Term. Gowen Fld

Wed 13/5

18:41-18:30

2 stops16h 49m

£845

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Wed 27/5

15:40-18:14

2 stops33h 34m

Boise Air Term. Gowen Fld

Wed 3/6

16:19-14:40

2 stops15h 21m

£862

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sat 10/10

15:40-22:47

2 stops38h 07m

Boise Air Term. Gowen Fld

Sat 24/10

13:00-14:40

2 stops18h 40m

£894

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 42 resultsSorted by cheapest first
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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 10 April 2026.

To ensure you get the cheapest price possible for a flight from London to Boise, you should look to book at least 55 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, January is the cheapest month in which you can book a flight from London to Boise (average of £497). Flying from London to Boise in July is currently the most expensive (average of £631). 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.

How much does it cost for a return flight from London to Boise?

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 56% 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.

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of £733.

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 53m.

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 17 April 2026.
See what other customers who have flown with KLM,Virgin Atlantic, andUnited Airlines 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.
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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
7.8
Good
1,499 reviews
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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
687 reviews
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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
9,602 reviews
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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
634 reviews
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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
7,926 reviews
KLM
7.8
Good
1,499 reviews
Check prices

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Boarding

7.8

Comfort

7.7

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 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 3 different airlines.

  • How long is the flight from London to Boise?

    Departing from London to Boise will take you 20h. London and Boise are separated by a distance of 4829 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, Lufthansa (£503), United Airlines (£541), and Virgin Atlantic (£594) offers the cheapest pricing from London to Boise. Lufthansa is priced at 30% lower than the current average price of a flight leaving 3 months from now.

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

    The most popular flight routes from London to Boise are London Heathrow - Boise Air Term. Gowen Fld, London Gatwick - Boise Air Term. Gowen Fld and London City - Boise Air Term. Gowen Fld.

  • 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, January is the cheapest month in which you can book a flight from London to Boise (average of £497). Flying from London to Boise in July is currently the most expensive (average of £631). 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 3 airlines flying from London to Boise

Discover the top 3 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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£503Average£665FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£541Average£682FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£594Average£792FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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 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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