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Cheap flights from London to Boise from £377

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
23 May — 30 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 23 April 2026.

Wed 4/1106:35
LHR
-
BOI
2 stops23h 30m
United Airlines
Sun 8/1118:55
BOI
-
LHR
2 stops28h 00m
United Airlines
Deal found 22/4£659
Wed 2/910:50
LHR
-
BOI
2 stops20h 00m
United Airlines
Mon 14/907:05
BOI
-
LHR
2 stops17h 20m
United Airlines
Deal found 21/4£660
Wed 2/914:10
LHR
-
BOI
1 stop15h 36m
Lufthansa
Mon 14/914:44
BOI
-
LHR
1 stop11h 56m
Lufthansa
Deal found 21/4£666
Mon 7/920:25
LHR
-
BOI
2 stops32h 00m
Lufthansa
Mon 21/912:23
BOI
-
LHR
1 stop13h 07m
Lufthansa
Deal found 21/4£668
Fri 25/906:40
LHR
-
BOI
2 stops20h 38m
Scandinavian Airlines
Sun 11/1012:42
BOI
-
LHR
2 stops20h 18m
Scandinavian Airlines
Deal found 19/4£676
Fri 29/517:00
LHR
-
BOI
2 stops36h 13m
Scandinavian Airlines
Sat 6/612:15
BOI
-
LHR
2 stops38h 05m
Scandinavian Airlines
Deal found 21/4£679
Tue 1/914:50
LHR
-
BOI
1 stop13h 35m
United Airlines
Mon 14/908:15
BOI
-
LHR
1 stop16h 10m
United Airlines
Deal found 21/4£684
Tue 8/909:30
LHR
-
BOI
2 stops31h 05m
Air Canada
Wed 23/906:30
BOI
-
LHR
2 stops17h 00m
Air Canada
Deal found 21/4£689
Wed 2/907:25
LHR
-
BOI
2 stops22h 07m
United Airlines
Fri 18/906:30
BOI
-
LHR
1 stop20h 10m
United Airlines
Deal found 21/4£690
Tue 1/911:25
LHR
-
BOI
1 stop13h 28m
United Airlines
Thu 17/906:30
BOI
-
LHR
2 stops17h 05m
United Airlines
Deal found 21/4£690
Wed 30/907:30
LHR
-
BOI
2 stops23h 22m
United Airlines
Sat 10/1019:05
BOI
-
LHR
2 stops18h 35m
United Airlines
Deal found 19/4£691
Tue 1/908:30
LHR
-
BOI
2 stops19h 55m
Air Canada
Wed 16/906:30
BOI
-
LHR
2 stops17h 00m
Air Canada
Deal found 21/4£693

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 23 April 2026.

Round-trip from

£660

One-way from

£377

Popular in

December

Cheapest in

January

Average price

£621
United Airlines
  • United Airlines
  • 2/9-14/9
  • 4 total stops
  • 37h 20m total
  • London to Boise
Search Deals
20/5
  • 20/5
  • 3 total stops
  • 22h 08m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£44 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 23 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
Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 2/9

11:25-17:53

1 stop13h 28m

Boise Air Term. Gowen Fld

Mon 14/9

14:44-09:40

1 stop11h 56m

£684

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 1/7

06:55-17:56

2 stops18h 01m

Boise Air Term. Gowen Fld

Wed 30/9

14:31-12:35

1 stop15h 04m

£719

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 29/9

06:40-18:35

2 stops18h 55m

Boise Air Term. Gowen Fld

Sat 3/10

12:42-17:40

2 stops21h 58m

£727

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 11/9

06:40-18:35

3 stops18h 55m

Boise Air Term. Gowen Fld

Sat 19/9

10:23-17:40

2 stops24h 17m

£730

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Fri 29/5

19:00-22:43

2 stops34h 43m

Boise Air Term. Gowen Fld

Sat 6/6

08:38-10:55

1 stop19h 17m

£739

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 3/6

06:55-21:40

2 stops21h 45m

Boise Air Term. Gowen Fld

Wed 10/6

10:41-10:40

2 stops16h 59m

£779

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

11:05-23:55

2 stops19h 50m

Boise Air Term. Gowen Fld

Sat 4/7

06:30-10:00

2 stops20h 30m

£799

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Fri 29/5

13:05-11:03

2 stops28h 58m

Boise Air Term. Gowen Fld

Fri 5/6

19:33-10:55

1 stop32h 22m

£802

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

12:15-22:37

2 stops17h 22m

Boise Air Term. Gowen Fld

Sun 5/7

06:30-07:45

2 stops42h 15m

£803

LondonBoise

LCY - BOI

LCYBOI

London City

Wed 2/9

10:00-20:18

2 stops17h 18m

Boise Air Term. Gowen Fld

Mon 14/9

05:40-16:40

2 stops28h 00m

£836

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 49 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?

To ensure you get the cheapest price possible for a flight from London to Boise, you should look to book at least 82 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 £498). Flying from London to Boise in July is currently the most expensive (average of £633). 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.

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of £735.

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 23 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
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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
1,508 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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
9,644 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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
639 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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
7,944 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

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 13h 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 (£505), United Airlines (£543), and Virgin Atlantic (£596) 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 £498). Flying from London to Boise in July is currently the most expensive (average of £633). 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 23 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£505Average£667FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£543Average£684FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£596Average£794FlexibilityNo 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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