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Cheap flights from London to Boise from £405

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
10 Apr — 17 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 11 March 2026.

Mon 27/410:35
LHR
-
BOI
1 stop17h 42m
United Airlines
Sun 3/514:33
BOI
-
LHR
1 stop12h 07m
United Airlines
Deal found 7/3£487
Wed 30/908:40
LHR
-
BOI
2 stops19h 35m
United Airlines
Wed 7/1017:22
BOI
-
LHR
1 stop11h 58m
United Airlines
Deal found 9/3£596
Mon 20/407:25
LHR
-
BOI
2 stops19h 28m
United Airlines
Mon 27/416:05
BOI
-
LHR
1 stop15h 05m
United Airlines
Deal found 10/3£597
Tue 21/407:30
LHR
-
BOI
2 stops19h 23m
United Airlines
Tue 28/408:20
BOI
-
LHR
2 stops15h 35m
United Airlines
Deal found 7/3£598
Tue 21/414:50
LHR
-
BOI
1 stop13h 32m
Lufthansa
Tue 28/414:37
BOI
-
LHR
1 stop14h 48m
Lufthansa
Deal found 7/3£602
Wed 23/907:30
LHR
-
BOI
2 stops20h 49m
United Airlines
Sun 27/917:22
BOI
-
LHR
1 stop33h 18m
United Airlines
Deal found 9/3£606
Wed 30/907:30
LHR
-
BOI
2 stops20h 45m
United Airlines
Sun 4/1012:29
BOI
-
LHR
1 stop35h 16m
United Airlines
Deal found 6/3£606
Tue 21/415:40
LGW
-
BOI
2 stops38h 22m
Icelandair
Tue 28/416:38
BOI
-
LGW
2 stops39h 02m
Icelandair
Deal found 7/3£651
Thu 23/410:25
LGW
-
BOI
2 stops19h 37m
Multiple Airlines
Mon 27/414:57
BOI
-
LGW
2 stops20h 53m
Multiple Airlines
Deal found 7/3£655
Mon 8/610:00
LGW
-
BOI
2 stops42h 17m
Multiple Airlines
Mon 29/608:03
BOI
-
LGW
1 stop19h 52m
Multiple Airlines
Deal found 9/3£677
Thu 23/415:40
LGW
-
BOI
2 stops39h 19m
Multiple Airlines
Thu 30/416:38
BOI
-
LGW
2 stops15h 02m
Multiple Airlines
Deal found 9/3£710
Mon 20/415:40
LGW
-
BOI
2 stops38h 17m
Multiple Airlines
Mon 27/414:57
BOI
-
LGW
2 stops16h 43m
Multiple Airlines
Deal found 6/3£723

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 11 March 2026.

Round-trip from

£487

One-way from

£405

Popular in

December

Cheapest in

January

Average price

£622
United Airlines
  • United Airlines
  • 27/4-3/5
  • 2 total stops
  • 29h 49m total
  • London to Boise
Search Deals
19/4
  • 19/4
  • 3 total stops
  • 44h 07m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£31 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 11 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

07:25-19:53

2 stops19h 28m

Boise Air Term. Gowen Fld

Mon 27/4

16:05-14:10

1 stop15h 05m

£597

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 23/4

07:25-19:53

2 stops19h 28m

Boise Air Term. Gowen Fld

Mon 27/4

06:15-06:55

2 stops17h 40m

£627

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Tue 21/4

15:40-23:02

2 stops38h 22m

Boise Air Term. Gowen Fld

Tue 28/4

16:38-14:40

2 stops39h 02m

£651

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Thu 23/4

10:25-23:02

2 stops19h 37m

Boise Air Term. Gowen Fld

Mon 27/4

14:57-18:50

2 stops20h 53m

£655

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 1/9

07:05-23:04

3 stops22h 59m

Boise Air Term. Gowen Fld

Tue 8/9

10:23-16:00

2 stops22h 37m

£658

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 4/9

06:55-17:53

2 stops17h 58m

Boise Air Term. Gowen Fld

Fri 2/10

08:05-10:10

1 stop19h 05m

£658

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 8/6

10:00-22:58

1 stop19h 58m

Boise Air Term. Gowen Fld

Mon 29/6

08:03-10:55

1 stop19h 52m

£681

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 27/4

14:57-14:40

2 stops16h 43m

£723

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

12:15-22:37

2 stops17h 22m

Boise Air Term. Gowen Fld

Sun 5/7

19:05-07:25

1 stop29h 20m

£750

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 27/4

16:38-14:40

2 stops15h 02m

£753

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 41 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 6 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 £509). Flying from London to Boise in February is currently the most expensive (average of £680). 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 58% 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.

Atlanta (ATL) is the most affordable one-stop option, with an average return flight price of £643.

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 11 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
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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
1,469 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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
680 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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
9,415 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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
619 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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
7,843 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Food

7.3

Comfort

7.6

Crew

8.4

Overall

7.8

Boarding

7.8

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 19h 28m. 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 (£507), United Airlines (£546), and Virgin Atlantic (£599) 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 £509). Flying from London to Boise in February is currently the most expensive (average of £680). 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 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£507Average£666FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£546Average£679FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£599Average£785FlexibilityNo 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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