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Cheap flights from London to Boise from £429

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
21 Aug — 28 Aug1
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 22 July 2026.

Wed 30/914:10
LHR
-
BOI
1 stop15h 48m
United Airlines
Thu 8/1008:08
BOI
-
LHR
1 stop15h 37m
United Airlines
Deal found 20/7£556
Tue 15/906:40
LHR
-
BOI
2 stops19h 00m
Scandinavian Airlines
Fri 16/1016:00
BOI
-
LHR
2 stops41h 00m
Scandinavian Airlines
Deal found 17/7£574
Sat 3/1006:40
LHR
-
BOI
2 stops19h 00m
Scandinavian Airlines
Sat 10/1012:08
BOI
-
LHR
3 stops21h 52m
Scandinavian Airlines
Deal found 18/7£587
Sat 15/806:40
LHR
-
BOI
2 stops22h 50m
Scandinavian Airlines
Fri 28/812:23
BOI
-
LHR
2 stops20h 37m
Scandinavian Airlines
Deal found 18/7£667
Wed 30/913:05
LHR
-
BOI
2 stops17h 39m
Multiple Airlines
Thu 8/1008:25
BOI
-
LHR
2 stops28h 55m
Multiple Airlines
Deal found 21/7£688
Tue 6/1008:00
LHR
-
BOI
2 stops22h 59m
United Airlines
Tue 13/1010:30
BOI
-
LHR
2 stops16h 55m
United Airlines
Deal found 21/7£688
Tue 6/1015:05
LHR
-
BOI
2 stops28h 58m
Air Canada
Tue 13/1006:25
BOI
-
LHR
2 stops17h 05m
Air Canada
Deal found 20/7£689
Mon 2/1111:35
LHR
-
BOI
2 stops30h 39m
United Airlines
Mon 30/1105:00
BOI
-
LHR
2 stops17h 55m
United Airlines
Deal found 17/7£691
Sun 20/919:30
LHR
-
BOI
2 stops34h 29m
Scandinavian Airlines
Sat 26/912:14
BOI
-
LHR
2 stops22h 26m
Scandinavian Airlines
Deal found 20/7£694
Fri 16/1006:30
LHR
-
BOI
2 stops18h 47m
Multiple Airlines
Sat 31/1010:06
BOI
-
LHR
2 stops19h 44m
Multiple Airlines
Deal found 21/7£696
Sun 25/1019:30
LHR
-
BOI
2 stops33h 34m
Scandinavian Airlines
Sun 8/1116:00
BOI
-
LHR
2 stops41h 00m
Scandinavian Airlines
Deal found 17/7£698
Wed 30/910:20
LGW
-
BOI
2 stops17h 15m
Multiple Airlines
Thu 8/1014:08
BOI
-
LGW
2 stops21h 42m
Multiple Airlines
Deal found 19/7£711

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 22 July 2026.

Round-trip from

£556

One-way from

£429

Popular in

December

Cheapest in

January

Average price

£919
United Airlines
  • United Airlines
  • 30/9-8/10
  • 2 total stops
  • 31h 25m total
  • London to Boise
Search Deals
27/9
  • 27/9
  • 3 total stops
  • 45h 33m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 22 July 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

Sat 3/10

06:40-18:40

2 stops19h 00m

Boise Air Term. Gowen Fld

Sat 10/10

12:08-17:00

3 stops21h 52m

£587

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 6/10

08:00-23:59

2 stops22h 59m

Boise Air Term. Gowen Fld

Tue 13/10

10:30-09:40

1 stop16h 10m

£688

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 25/10

19:30-23:04

2 stops33h 34m

Boise Air Term. Gowen Fld

Sun 8/11

16:00-16:00

2 stops41h 00m

£698

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Wed 30/9

10:20-20:35

2 stops17h 15m

Boise Air Term. Gowen Fld

Thu 8/10

14:08-18:50

2 stops21h 42m

£711

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 4/12

07:40-23:59

2 stops23h 19m

Boise Air Term. Gowen Fld

Mon 7/12

10:39-07:55

2 stops14h 16m

£716

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 20/9

16:40-11:06

2 stops25h 26m

Boise Air Term. Gowen Fld

Sun 27/9

17:30-07:45

2 stops31h 15m

£718

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 24/10

06:40-23:04

2 stops23h 24m

Boise Air Term. Gowen Fld

Sun 8/11

16:00-16:00

2 stops41h 00m

£738

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sat 24/10

10:20-20:06

2 stops16h 46m

Boise Air Term. Gowen Fld

Sat 7/11

13:51-14:50

2 stops17h 59m

£747

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 20/9

10:35-19:19

1 stop15h 44m

Boise Air Term. Gowen Fld

Sat 26/9

18:50-06:45

2 stops28h 55m

£748

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Fri 23/10

10:20-22:06

2 stops18h 46m

Boise Air Term. Gowen Fld

Sat 7/11

10:49-19:20

2 stops25h 31m

£755

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 40 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

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 £571). Flying from London to Boise in August is currently the most expensive (average of £1,058). 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.

Seattle (SEA) – chosen by Cheapflights users on 46% 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.

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £612.

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 Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 08m.

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 22 July 2026.
See what other customers who have flown with Virgin Atlantic,United Airlines, andIcelandair 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.
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
693 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
10,018 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Icelandair
7.0
Good
715 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,152 reviews
Virgin Atlantic
7.5
Good
693 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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 4 different airlines.

  • How long is the flight from London to Boise?

    Departing from London to Boise will take you 19h. 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 (£508), United Airlines (£553), and Virgin Atlantic (£600) offers the cheapest pricing from London to Boise. Lufthansa is priced at 35% 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 £571). Flying from London to Boise in August is currently the most expensive (average of £1,058). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from London to Boise

Discover the top 4 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 22 July 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£508Average£672FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£553Average£699FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£600Average£835FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£736Average£950FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines 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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