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Cheap flights from London to Boise from £349

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
9 juil. — 16 juil.1
1 adult

Cheapflights Tip: The best prices from London to Boise Air Term. Gowen Fld are usually found in November or February, booked 55 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 4 juillet 2025.

Round-trip from

£618

One-way from

£349

Popular in

August

Cheapest in

November

Average price

£862
United Airlines
  • United Airlines
  • 7/9-20/9
  • 3 total stops
  • 34h 16m total
  • London to Boise
18/9
  • 18/9
  • 2 total stops
  • 53h 34m total
  • London to Boise
Highest demand for flights based on searches. 15% potential increase in price (£89 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from London to Boise

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 4 juillet 2025.

dim. 7/912:05LHR - BOI
2 stops17h 36mUnited Airlines
sam. 20/907:00BOI - LHR
2 stops16h 45mUnited Airlines
Deal found 2/7£618
jeu. 28/810:45LGW - BOI
1 stop19h 09mMultiple Airlines
sam. 6/920:27BOI - LGW
1 stop31h 28mMultiple Airlines
Deal found 2/7£618
ven. 5/914:50LHR - BOI
1 stop13h 25mLufthansa
sam. 20/912:27BOI - LHR
1 stop12h 53mLufthansa
Deal found 2/7£621
sam. 6/908:40LCY - BOI
2 stops21h 14mMultiple Airlines
sam. 20/908:10BOI - LCY
2 stops22h 05mMultiple Airlines
Deal found 2/7£626
ven. 21/1118:00LHR - BOI
2 stops24h 39mMultiple Airlines
dim. 30/1106:15BOI - LHR
2 stops17h 15mMultiple Airlines
Deal found 3/7£628
ven. 5/906:10LHR - BOI
2 stops22h 38mAmerican Airlines
dim. 21/913:07BOI - LHR
2 stops33h 43mAmerican Airlines
Deal found 2/7£641
mer. 27/809:30LHR - BOI
2 stops19h 51mAir Canada
ven. 5/907:45BOI - LHR
2 stops21h 05mAir Canada
Deal found 3/7£680
ven. 5/908:40LHR - BOI
2 stops18h 40mDelta
ven. 19/911:27BOI - LHR
2 stops16h 58mDelta
Deal found 2/7£685
lun. 18/808:20LHR - BOI
1 stop20h 23mFinnair
jeu. 28/807:00BOI - LHR
2 stops16h 20mFinnair
Deal found 3/7£695
sam. 6/913:00LGW - BOI
2 stops16h 40mIcelandair
sam. 20/916:34BOI - LGW
2 stops15h 06mIcelandair
Deal found 2/7£704
ven. 12/906:40LHR - BOI
2 stops20h 40mScandinavian Airlines
sam. 27/915:45BOI - LHR
3 stops22h 50mScandinavian Airlines
Deal found 2/7£710
dim. 17/808:20LHR - BOI
1 stop20h 20mIberia
dim. 24/813:36BOI - LHR
1 stop33h 49mIberia
Deal found 2/7£719

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 4 juillet 2025.
Use the filters below to find and compare flights from London to Boise that are best for you.

Fly from

London

Fly to

Boise

Route

Depart

Return

Price

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

dim. 7/9

12:05-22:41

2 stops17h 36m

Boise Air Term. Gowen Fld

sam. 20/9

07:45-07:25

1 stop16h 40m

£618

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

jeu. 28/8

10:45-22:54

1 stop19h 09m

Boise Air Term. Gowen Fld

sam. 6/9

20:27-10:55

1 stop31h 28m

£618

LondonBoise

LCY - BOI

LCYBOI

London City

sam. 6/9

08:40-22:54

2 stops21h 14m

Boise Air Term. Gowen Fld

sam. 20/9

08:10-13:15

2 stops22h 05m

£626

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

ven. 21/11

18:00-11:39

2 stops24h 39m

Boise Air Term. Gowen Fld

dim. 30/11

06:15-06:30

2 stops17h 15m

£628

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

ven. 24/10

08:30-21:24

2 stops19h 54m

Boise Air Term. Gowen Fld

lun. 3/11

14:31-20:35

2 stops23h 04m

£639

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

ven. 5/9

06:10-21:48

2 stops22h 38m

Boise Air Term. Gowen Fld

dim. 21/9

13:07-05:50

2 stops33h 43m

£641

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

mer. 27/8

09:30-22:21

2 stops19h 51m

Boise Air Term. Gowen Fld

ven. 5/9

07:45-11:50

2 stops21h 05m

£680

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

ven. 5/9

08:40-20:20

2 stops18h 40m

Boise Air Term. Gowen Fld

ven. 19/9

11:27-11:25

2 stops16h 58m

£685

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

lun. 18/8

08:20-12:46

1 stop35h 26m

Boise Air Term. Gowen Fld

jeu. 28/8

13:36-10:50

1 stop14h 14m

£695

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

sam. 6/9

13:00-22:40

2 stops16h 40m

Boise Air Term. Gowen Fld

sam. 20/9

16:34-14:40

2 stops15h 06m

£704

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 29 results
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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 27 June 2025.

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, October is the cheapest month in which you can book a flight from London to Boise (average of £754). Flying from London to Boise in August is currently the most expensive (average of £1,152). 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.

What is the cheapest time of day to fly from LON to BOI?

Find hourly flight availability from London to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 juillet 2025.

It’s typically best to fly out from London to Boise at midday. Doing so could potentially save you 24% on the flight price compared to flying in the evening, which is usually more expensive.

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

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 4 juillet 2025.
See what other customers who have flown with Delta, KLM, andFinnair 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.

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 6 different airlines.

  • What are the cheapest airlines flying from London to Boise round-trip?

    According to our current data, United Airlines (£618), Lufthansa (£639), and American Airlines (£641) offers the cheapest pricing from London to Boise. United Airlines is priced at 9% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London to Boise one-way?

    The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as £568. However, be on the lookout for offers from Icelandair and Finnair, as they are both options that can get you from London to Boise for a low price.

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

  • 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, October is the cheapest month in which you can book a flight from London to Boise (average of £754). Flying from London to Boise in August is currently the most expensive (average of £1,152). 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 6 airlines flying from London to Boise

Discover the top 6 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 4 juillet 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£509Average£637FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£522Average£619FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£526Average£625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£527Average£575FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£593Average£745FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£658Average£843FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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