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Cheap flights from London to Boise from £390

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
15 Apr — 22 Apr1
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 16 March 2026.

Mon 27/410:35
LHR
-
BOI
1 stop17h 42m
United Airlines
Sun 3/506:23
BOI
-
LHR
1 stop18h 02m
United Airlines
Deal found 12/3£509
Mon 20/407:25
LHR
-
BOI
2 stops19h 28m
United Airlines
Mon 27/410:35
BOI
-
LHR
2 stops16h 50m
United Airlines
Deal found 12/3£608
Wed 23/907:30
LHR
-
BOI
2 stops20h 49m
United Airlines
Sun 27/918:55
BOI
-
LHR
1 stop33h 15m
United Airlines
Deal found 11/3£618
Thu 30/413:00
LGW
-
BOI
2 stops17h 02m
Multiple Airlines
Thu 7/514:57
BOI
-
LGW
2 stops16h 43m
Multiple Airlines
Deal found 16/3£619
Tue 1/906:55
LHR
-
BOI
2 stops17h 58m
United Airlines
Thu 17/905:00
BOI
-
LHR
1 stop24h 20m
United Airlines
Deal found 14/3£623
Wed 2/909:30
LHR
-
BOI
2 stops18h 55m
United Airlines
Wed 16/906:23
BOI
-
LHR
1 stop18h 02m
United Airlines
Deal found 14/3£624
Tue 1/910:20
LGW
-
BOI
2 stops19h 27m
Multiple Airlines
Tue 15/913:00
BOI
-
LGW
2 stops18h 40m
Multiple Airlines
Deal found 14/3£746
Mon 20/415:40
LGW
-
BOI
2 stops38h 17m
Icelandair
Mon 27/412:15
BOI
-
LGW
2 stops16h 30m
Icelandair
Deal found 15/3£772
Fri 4/910:20
LGW
-
BOI
1 stop19h 35m
Multiple Airlines
Fri 18/918:51
BOI
-
LGW
1 stop33h 04m
Multiple Airlines
Deal found 14/3£776
Fri 4/910:20
LGW
-
BOI
1 stop19h 35m
Multiple Airlines
Sat 12/908:18
BOI
-
LGW
1 stop19h 37m
Multiple Airlines
Deal found 14/3£789
Sat 29/810:05
LGW
-
BOI
1 stop19h 50m
Multiple Airlines
Fri 18/918:51
BOI
-
LGW
1 stop33h 04m
Multiple Airlines
Deal found 14/3£794
Thu 3/910:20
LGW
-
BOI
2 stops20h 39m
Multiple Airlines
Sat 12/908:18
BOI
-
LGW
1 stop19h 37m
Multiple Airlines
Deal found 14/3£797

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 16 March 2026.

Round-trip from

£509

One-way from

£390

Popular in

December

Cheapest in

January

Average price

£633
United Airlines
  • United Airlines
  • 27/4-3/5
  • 2 total stops
  • 35h 44m total
  • London to Boise
Search Deals
13/4
  • 13/4
  • 3 total stops
  • 32h 30m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 16 March 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

Mon 20/4

10:50-22:35

2 stops18h 45m

Boise Air Term. Gowen Fld

Mon 27/4

06:15-07:25

1 stop18h 10m

£608

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 12/4

07:25-22:35

2 stops22h 10m

Boise Air Term. Gowen Fld

Sun 19/4

17:29-10:00

2 stops33h 31m

£661

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

11:25-21:35

1 stop17h 10m

Boise Air Term. Gowen Fld

Sun 5/7

19:05-07:25

1 stop29h 20m

£763

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 27/4

12:15-11:45

2 stops16h 30m

£800

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Tue 1/9

10:35-10:02

2 stops30h 27m

Boise Air Term. Gowen Fld

Thu 17/9

06:00-09:25

2 stops20h 25m

£804

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 31/8

10:25-16:48

2 stops37h 23m

Boise Air Term. Gowen Fld

Wed 16/9

16:05-16:00

2 stops40h 55m

£814

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 31/8

10:25-23:56

2 stops44h 31m

Boise Air Term. Gowen Fld

Tue 15/9

08:40-16:00

2 stops24h 20m

£814

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sun 12/4

10:20-22:57

2 stops19h 37m

Boise Air Term. Gowen Fld

Sun 19/4

11:58-18:50

2 stops23h 52m

£818

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Wed 2/9

10:25-10:02

2 stops30h 37m

Boise Air Term. Gowen Fld

Sun 13/9

08:40-09:25

2 stops17h 45m

£834

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Thu 3/9

10:25-23:59

2 stops20h 34m

Boise Air Term. Gowen Fld

Wed 16/9

16:05-09:25

2 stops34h 20m

£834

Flights are sorted by cheapest return flights first.

Deals found on 15/3

Showing 1-10 of 44 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 13 March 2026.

To ensure you get the cheapest price possible for a flight from London to Boise, you should look to book at least 16 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, March is the cheapest month in which you can book a flight from London to Boise (average of £518). Flying from London 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.

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 57% 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 £751.

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 16 March 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
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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
1,472 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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
682 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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
9,431 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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
7.1
Good
622 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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
7,857 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Comfort

7.6

Entertainment

7.1

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 17h 18m. 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, Lufthansa (£515), United Airlines (£554), and Virgin Atlantic (£608) offers the cheapest pricing from London to Boise. Lufthansa is priced at 28% 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, March is the cheapest month in which you can book a flight from London to Boise (average of £518). Flying from London 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

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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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£515Average£682FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£554Average£698FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£608Average£803FlexibilityNo 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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