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

£515 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Iberia and Lufthansa, with prices starting from £601 and £635, respectively.

What are the most popular routes from London to Idaho?

While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Heathrow - Jackson Hole, London Heathrow - Spokane is the most popular route from London to Idaho.

What are the most popular airlines that fly from London to Idaho?

Consider Finnair, British Airways or Icelandair when booking your flight. These represent the most popular airlines when flying from London to Idaho.

How far in advance should I book a flight from London to Idaho?

Find a great deal and save up to 21% by booking at least 12 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Idaho within the next two weeks, with the cheapest ticket starting at £515.

What is the cheapest month to fly from London to Idaho?

The best pricing can be found in the month of November. Prices to Idaho from London average £705. You can even find prices in November for less than £705, as users have found deals to Idaho from as low as £518. The month of August appears to be one of the more expensive times to travel to Idaho from London. Flying in the targeted month can save you up to 43%.

Can I find deals for flights from London to Idaho that include hotel bookings?

Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Idaho?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.

Can I find deals for business class flights from London to Idaho?

Yes. Cheapflights offers flight deals from London to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£315+ Flights from London to Idaho

Cheap flight deals from London to Idaho

Round-trip from	£578
One-way from	£315
Popular in	August
Cheapest in	November
Average price	£667

Lufthansa
26/9-6/10
4 total stops
45h 26m total
London to Idaho

Search Deals

30/5
1 total stop
34h 49m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£110 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from London to Idaho

Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Fri 26/917:40LHR - BOI

2 stops26h 55mLufthansa

Mon 6/1019:09BOI - LHR

2 stops18h 31mLufthansa

Deal found 29/4£578

Mon 19/510:45LGW - GEG

1 stop19h 37mMultiple Airlines

Mon 26/507:10GEG - LGW

1 stop19h 45mMultiple Airlines

Deal found 29/4£588

Mon 9/610:45LGW - BOI

1 stop34h 59mMultiple Airlines

Mon 30/608:18BOI - LGW

1 stop19h 37mMultiple Airlines

Deal found 28/4£619

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£628

Fri 24/1009:00LHR - BOI

2 stops20h 21mUnited Airlines

Mon 3/1110:39BOI - LHR

2 stops36h 16mUnited Airlines

Deal found 30/4£641

Thu 12/608:40LHR - GEG

2 stops22h 34mUnited Airlines

Thu 19/618:00GEG - LHR

1 stop34h 20mUnited Airlines

Deal found 30/4£699

Sat 14/606:30LHR - GEG

2 stops16h 26mDelta

Sat 21/606:50GEG - LHR

2 stops18h 00mDelta

Deal found 29/4£711

Fri 13/613:05LHR - GEG

1 stop16h 54mKLM

Fri 20/614:22GEG - LHR

1 stop14h 48mKLM

Deal found 29/4£722

Wed 18/621:25LHR - BOI

2 stops56h 21mIcelandair

Mon 23/620:46BOI - LHR

2 stops32h 09mIcelandair

Deal found 29/4£722

Sat 27/912:20LHR - JAC

2 stops31h 24mLufthansa

Sat 4/1016:20JAC - LHR

2 stops31h 00mLufthansa

Deal found 29/4£726

Wed 28/511:00LHR - IDA

1 stop14h 10mVirgin Atlantic

Wed 11/615:04IDA - LHR

2 stops32h 41mVirgin Atlantic

Deal found 29/4£744

Wed 18/612:00LGW - BOI

2 stops19h 14mDelta

Mon 23/608:35BOI - LGW

2 stops18h 25mDelta

Deal found 29/4£748

Best flights from London to Idaho
Discover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Fri 26/917:40LHR - BOI

2 stops26h 55mLufthansa

Mon 6/1019:09BOI - LHR

2 stops18h 31mLufthansa

Deal found 29/4£578

Mon 19/510:45LGW - GEG

1 stop19h 37mMultiple Airlines

Mon 26/507:10GEG - LGW

1 stop19h 45mMultiple Airlines

Deal found 29/4£588

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£628

Fri 24/1009:00LHR - BOI

2 stops20h 21mUnited Airlines

Mon 3/1110:39BOI - LHR

2 stops36h 16mUnited Airlines

Deal found 30/4£641

Sat 14/606:30LHR - GEG

2 stops16h 26mDelta

Sat 21/606:50GEG - LHR

2 stops18h 00mDelta

Deal found 29/4£711

Fri 13/613:05LHR - GEG

1 stop16h 54mKLM

Fri 20/614:22GEG - LHR

1 stop14h 48mKLM

Deal found 29/4£722

Wed 18/621:25LHR - BOI

2 stops56h 21mIcelandair

Mon 23/620:46BOI - LHR

2 stops32h 09mIcelandair

Deal found 29/4£722

Thu 22/509:50LHR - BOI

1 stop19h 52mBritish Airways

Mon 2/616:01BOI - LHR

1 stop13h 59mBritish Airways

Deal found 29/4£769

Fri 13/606:40LHR - BOI

2 stops19h 26mScandinavian Airlines

Fri 20/614:00BOI - LHR

2 stops16h 35mScandinavian Airlines

Deal found 29/4£782

Mon 18/810:20LHR - BOI

2 stops19h 26mFinnair

Thu 28/807:00BOI - LHR

1 stop16h 25mFinnair

Deal found 30/4£790

Tue 27/508:20LHR - IDA

1 stop19h 57mAmerican Airlines

Tue 10/607:00IDA - LHR

1 stop19h 00mAmerican Airlines

Deal found 30/4£815

Mon 9/610:45LGW - BOI

1 stop34h 59mMultiple Airlines

Mon 30/608:18BOI - LGW

1 stop19h 37mMultiple Airlines

Deal found 28/4£619

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 30 April 2025 and is based on user searches.

Thu 8/509:30LHR - GEG

2 stops43h 20mUnited Airlines

Sun 11/516:10GEG - LHR

1 stop33h 30mUnited Airlines

Deal found 29/4£943

Sun 11/506:30LHR - IDA

2 stops23h 21mDelta

Fri 20/606:00IDA - LHR

2 stops24h 10mDelta

Deal found 29/4£765

Sun 11/512:15LHR - IDA

2 stops17h 30mLufthansa

Fri 20/614:25IDA - LHR

1 stop14h 55mLufthansa

Deal found 29/4£804

Mon 19/510:45LGW - GEG

1 stop19h 37mMultiple Airlines

Mon 26/507:10GEG - LGW

1 stop19h 45mMultiple Airlines

Deal found 29/4£588

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£628

Thu 22/521:25LHR - BOI

2 stops32h 17mIcelandair

Mon 2/620:41BOI - LHR

2 stops32h 14mIcelandair

Deal found 30/4£723

Thu 22/509:50LHR - BOI

1 stop19h 52mBritish Airways

Mon 2/616:01BOI - LHR

1 stop13h 59mBritish Airways

Deal found 29/4£769

Thu 22/515:40LGW - BOI

2 stops31h 15mIcelandair

Mon 2/620:41BOI - LGW

2 stops56h 04mIcelandair

Deal found 30/4£784

Thu 22/517:25LHR - BOI

1 stop13h 47mVirgin Atlantic

Mon 2/613:50BOI - LHR

2 stops33h 55mVirgin Atlantic

Deal found 29/4£791

Thu 22/509:55LHR - BOI

2 stops18h 11mDelta

Mon 2/619:18BOI - LHR

2 stops17h 42mDelta

Deal found 29/4£795

Thu 22/508:40LCY - BOI

2 stops19h 26mVirgin Atlantic

Mon 2/612:50BOI - LCY

2 stops20h 50mVirgin Atlantic

Deal found 29/4£811

Tue 27/510:55LHR - IDA

1 stop14h 15mKLM

Tue 10/615:04IDA - LHR

2 stops15h 06mKLM

Deal found 29/4£779

One-way flights from London to Idaho
Search for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Fri 30/510:55LGW - BOI

1 stop34h 49mMultiple Airlines

Deal found 30/4£315

Fri 30/515:05LHR - BOI

3 stops33h 06mMultiple Airlines

Deal found 30/4£365

Sat 16/816:30LGW - GEG

2 stops48h 35mMultiple Airlines

Deal found 29/4£432

Thu 14/808:45LCY - GEG

3 stops32h 20mMultiple Airlines

Deal found 29/4£433

Thu 11/914:10LHR - BOI

2 stops16h 49mWestJet

Deal found 29/4£515

Fri 30/512:00LHR - BOI

1 stop17h 00mIberia

Deal found 30/4£601

Mon 12/513:55LHR - GEG

2 stops16h 55mWestJet

Deal found 29/4£629

Sat 21/606:30LHR - BOI

2 stops18h 32mLufthansa

Deal found 29/4£635

Tue 24/615:10LHR - GEG

1 stop16h 10mMultiple Airlines

Deal found 29/4£641

Tue 24/608:45LCY - GEG

2 stops22h 29mLufthansa

Deal found 29/4£657

Mon 12/510:35LHR - GEG

1 stop21h 03mLufthansa

Deal found 29/4£704

Mon 12/515:40LGW - GEG

2 stops37h 21mIcelandair

Deal found 29/4£743

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 26/9

17:40-13:35

2 stops26h 55m

Boise Air Term. Gowen Fld

Mon 6/10

19:09-20:40

2 stops18h 31m

£578

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Mon 19/5

10:45-22:22

1 stop19h 37m

Spokane

Mon 26/5

07:10-10:55

1 stop19h 45m

£588

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 9/6

10:45-14:44

1 stop34h 59m

Boise Air Term. Gowen Fld

Mon 30/6

08:18-10:55

1 stop19h 37m

£619

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 19/5

17:25-22:50

1 stop13h 25m

Spokane

Mon 26/5

09:45-09:50

1 stop16h 05m

£628

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 24/10

09:00-22:21

2 stops20h 21m

Boise Air Term. Gowen Fld

Mon 3/11

10:39-05:55

2 stops36h 16m

£641

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 12/6

08:40-23:14

2 stops22h 34m

Spokane

Thu 19/6

18:00-12:20

1 stop34h 20m

£699

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 13/6

09:55-18:50

2 stops16h 55m

Spokane

Fri 20/6

06:50-06:25

2 stops15h 35m

£709

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 13/6

13:05-21:59

1 stop16h 54m

Spokane

Fri 20/6

14:22-13:10

1 stop14h 48m

£722

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 18/6

21:25-22:46

2 stops56h 21m

Boise Air Term. Gowen Fld

Mon 23/6

20:46-11:55

2 stops32h 09m

£722

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Sat 27/9

12:20-12:44

2 stops31h 24m

Jackson Hole

Sat 4/10

16:20-06:20

2 stops31h 00m

£726

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 58 results

...

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho 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 Idaho

What is the cheapest month to book a flight from London to Idaho?

Currently, October is the cheapest month in which you can book a flight from London to Idaho (average of £754). Flying from London to Idaho 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 ID?

When flying from London to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Idaho by month

In terms of precipitation, rainfall in Idaho ranges from 5.0 - 41.0 inches per month. December is typically the wettest month, when rainfall can reach 41.0 mm. August is typically the driest time to visit Idaho when rainfall is around 5.0 mm.

Temperature in Idaho by month

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Idaho

See what other customers who have flown with Delta, KLM and Finnair from London to Idaho have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from London to Idaho one-way?
£515 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Iberia and Lufthansa, with prices starting from £601 and £635, respectively.
What are the most popular routes from London to Idaho?
While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Heathrow - Jackson Hole, London Heathrow - Spokane is the most popular route from London to Idaho.
Can I find deals for flights from London to Idaho that include hotel bookings?
Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.
Can I find deals for business class flights from London to Idaho?
Yes. Cheapflights offers flight deals from London to Idaho 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 Idaho?
Currently, October is the cheapest month in which you can book a flight from London to Idaho (average of £754). Flying from London to Idaho 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

Alternative routes for London to Idaho

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Heathrow to Dulles Intl flights

Luton to John F Kennedy Intl flights

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London City to Los Angeles flights

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Edinburgh to Newark flights

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Heathrow to Denver flights

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Manchester to Newark flights

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London City to Boston flights

Manchester to LaGuardia flights

Heathrow to Charlotte flights

Gatwick to Los Angeles flights

Gatwick to Las Vegas flights

London City to O'Hare Intl flights

Heathrow to Austin flights

Gatwick to O'Hare Intl flights

Luton to Newark flights

Luton to Los Angeles flights

Direct flights to United States

Top 7 airlines flying from London to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£490	Average£651	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£531	Average£646	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£534	Average£838	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£538	Average£592	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£577	Average£796	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£662	Average£809	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£670	Average£858	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Idaho?

Deals for London to Idaho 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 Idaho?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Idaho for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Idaho with no change fees?

Yes, we can. To see specific flights from London to Idaho with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

Of course! You can now track prices for flights from London to Idaho and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London to Idaho from £315

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Idaho

Keep the following information in mind while searching for London to Idaho flight deals. Data was last updated 30 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Idaho

Cheapest flights from London to IdahoExplore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Idaho that are best for you.

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Idaho

What is the cheapest month to book a flight from London to Idaho?

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

Find hourly flight availability from London to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated 30 April 2025.

See what other customers who have flown with Delta, KLM and Finnair from London to Idaho have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

What are the most popular routes from London to Idaho?

Can I find deals for flights from London to Idaho that include hotel bookings?

How can I find direct flights from London to Idaho?

Can I find deals for business class flights from London to Idaho?

What is the cheapest month to book a flight from London to Idaho?

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.

Alternative routes for London to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from London to Idaho

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 Idaho?

Why should you use Cheapflights to find cheap flight tickets from London to Idaho?

Can Cheapflights find flights from London to Idaho with no change fees?

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

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Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.