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

£592 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Finnair and WestJet, with prices starting from £714 and £725, respectively.

What are the most popular routes from London to Idaho?

While some choose either London Heathrow - Boise Air Term. Gowen Fld or London City - Jackson Hole, London Heathrow - Jackson Hole 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 KLM 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 18% by booking at least 56 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 £620.

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 £694. You can even find prices in November for less than £694, as users have found deals to Idaho from as low as £509. 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 44%.

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.

£251+ Flights from London to Idaho

Cheap flight deals from London to Idaho

Round-trip from	£474
One-way from	£251
Popular in	August
Cheapest in	November
Average price	£678

Virgin Atlantic
9/9-17/9
4 total stops
36h 25m total
London to Idaho

Search Deals

22/9
1 total stop
34h 55m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£102 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Tue 9/906:15LHR - GEG

2 stops20h 30mVirgin Atlantic

Wed 17/910:20GEG - LHR

2 stops15h 55mVirgin Atlantic

Deal found 11/6£474

Fri 5/910:55LGW - GEG

1 stop19h 30mMultiple Airlines

Sat 20/913:40GEG - LGW

2 stops37h 15mMultiple Airlines

Deal found 12/6£478

Fri 24/1011:25LHR - BOI

1 stop16h 59mLufthansa

Mon 3/1110:39BOI - LHR

1 stop16h 01mLufthansa

Deal found 12/6£637

Sat 23/813:35LHR - BOI

1 stop16h 19mMultiple Airlines

Sun 7/908:10BOI - LHR

1 stop26h 05mMultiple Airlines

Deal found 12/6£644

Tue 9/913:00LGW - GEG

2 stops18h 59mIcelandair

Wed 17/912:39GEG - LGW

2 stops18h 01mIcelandair

Deal found 11/6£645

Tue 9/909:25LCY - GEG

2 stops21h 40mMultiple Airlines

Wed 17/907:23GEG - LCY

2 stops21h 07mMultiple Airlines

Deal found 11/6£649

Wed 18/612:45LHR - BOI

1 stop18h 06mVirgin Atlantic

Mon 23/611:54BOI - LHR

2 stops16h 31mVirgin Atlantic

Deal found 11/6£650

Wed 18/611:45LHR - BOI

2 stops19h 29mDelta

Mon 23/614:00BOI - LHR

2 stops16h 30mDelta

Deal found 11/6£655

Sat 30/815:40LGW - BOI

2 stops38h 00mIcelandair

Sat 13/916:34BOI - LGW

2 stops15h 06mIcelandair

Deal found 11/6£662

Wed 17/916:15LHR - JAC

1 stop28h 36mLufthansa

Sat 27/915:15JAC - LHR

2 stops36h 55mLufthansa

Deal found 13/6£665

Sat 23/812:05LHR - BOI

3 stops32h 44mUnited Airlines

Sun 7/919:09BOI - LHR

1 stop29h 16mUnited Airlines

Deal found 12/6£667

Tue 1/708:40LHR - GEG

2 stops18h 16mDelta

Thu 10/705:05GEG - LHR

1 stop22h 15mDelta

Deal found 12/6£670

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 13 June 2025.

Tue 9/906:15LHR - GEG

2 stops20h 30mVirgin Atlantic

Wed 17/910:20GEG - LHR

2 stops15h 55mVirgin Atlantic

Deal found 11/6£474

Fri 5/910:55LGW - GEG

1 stop19h 30mMultiple Airlines

Sat 20/913:40GEG - LGW

2 stops37h 15mMultiple Airlines

Deal found 12/6£478

Fri 24/1011:25LHR - BOI

1 stop16h 59mLufthansa

Mon 3/1110:39BOI - LHR

1 stop16h 01mLufthansa

Deal found 12/6£637

Tue 9/913:00LGW - GEG

2 stops18h 59mIcelandair

Wed 17/912:39GEG - LGW

2 stops18h 01mIcelandair

Deal found 11/6£645

Sat 23/812:05LHR - BOI

3 stops32h 44mUnited Airlines

Sun 7/919:09BOI - LHR

1 stop29h 16mUnited Airlines

Deal found 12/6£667

Tue 1/708:40LHR - GEG

2 stops18h 16mDelta

Thu 10/705:05GEG - LHR

1 stop22h 15mDelta

Deal found 12/6£670

Thu 28/819:30LHR - BOI

2 stops29h 46mScandinavian Airlines

Sat 6/914:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 12/6£690

Sat 30/808:40LCY - BOI

2 stops21h 17mKLM

Sat 13/913:43BOI - LCY

2 stops20h 37mKLM

Deal found 12/6£731

Wed 17/908:20LHR - JAC

1 stop18h 39mAmerican Airlines

Sat 27/916:29JAC - LHR

1 stop13h 01mAmerican Airlines

Deal found 12/6£738

Thu 26/615:10LHR - BOI

1 stop15h 09mIberia

Mon 7/715:35BOI - LHR

1 stop15h 50mIberia

Deal found 12/6£762

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

Tue 1/718:35LGW - BOI

2 stops33h 59mSWISS

Mon 21/714:32BOI - LGW

2 stops20h 18mSWISS

Deal found 12/6£1,244

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 13 June 2025 and is based on user searches.

Wed 18/612:45LHR - BOI

1 stop18h 06mVirgin Atlantic

Mon 23/611:54BOI - LHR

2 stops16h 31mVirgin Atlantic

Deal found 11/6£650

Wed 18/611:45LHR - BOI

2 stops19h 29mDelta

Mon 23/614:00BOI - LHR

2 stops16h 30mDelta

Deal found 11/6£655

Wed 18/615:40LGW - BOI

2 stops38h 06mIcelandair

Mon 23/620:46BOI - LGW

2 stops34h 54mIcelandair

Deal found 12/6£969

Wed 18/613:05LHR - BOI

2 stops40h 41mIcelandair

Mon 23/620:46BOI - LHR

2 stops32h 09mIcelandair

Deal found 12/6£1,034

Wed 18/611:25LHR - BOI

1 stop13h 36mLufthansa

Mon 23/605:10BOI - LHR

2 stops18h 35mLufthansa

Deal found 12/6£1,037

Wed 18/607:05LHR - BOI

3 stops20h 30mScandinavian Airlines

Mon 23/614:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 11/6£1,716

Wed 18/608:45LCY - BOI

2 stops19h 41mLufthansa

Mon 23/608:10BOI - LCY

2 stops17h 00mLufthansa

Deal found 11/6£2,119

Thu 26/615:10LHR - BOI

1 stop15h 09mIberia

Mon 7/715:35BOI - LHR

1 stop15h 50mIberia

Deal found 12/6£762

Sat 28/610:55LHR - IDA

1 stop14h 17mVirgin Atlantic

Wed 2/713:09IDA - LHR

1 stop13h 41mVirgin Atlantic

Deal found 12/6£776

Sat 28/612:25LHR - IDA

2 stops17h 30mDelta

Wed 2/713:09IDA - LHR

2 stops17h 36mDelta

Deal found 12/6£800

Tue 1/710:55LHR - GEG

1 stop13h 25mVirgin Atlantic

Wed 16/714:22GEG - LHR

1 stop14h 48mVirgin Atlantic

Deal found 12/6£665

Tue 1/706:30LHR - GEG

2 stops20h 26mDelta

Thu 10/713:10GEG - LHR

2 stops16h 00mDelta

Deal found 12/6£670

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 13 June 2025.

Mon 22/909:50LGW - GEG

1 stop34h 55mMultiple Airlines

Deal found 10/6£251

Mon 22/910:20LHR - GEG

2 stops20h 05mMultiple Airlines

Deal found 10/6£472

Mon 15/916:35LHR - JAC

2 stops30h 34mMultiple Airlines

Deal found 11/6£552

Mon 22/908:45LCY - GEG

2 stops22h 20mLufthansa

Deal found 10/6£592

Thu 11/907:30LHR - BOI

2 stops20h 44mLufthansa

Deal found 12/6£609

Sat 21/612:00LHR - BOI

1 stop17h 29mFinnair

Deal found 12/6£714

Thu 21/814:10LHR - BOI

2 stops15h 13mWestJet

Deal found 11/6£725

Tue 24/615:40LGW - GEG

2 stops16h 19mIcelandair

Deal found 12/6£726

Thu 21/808:45LCY - BOI

2 stops19h 29mLufthansa

Deal found 11/6£726

Sat 21/621:25LHR - BOI

2 stops32h 21mIcelandair

Deal found 11/6£758

Sat 21/615:40LGW - BOI

2 stops38h 06mIcelandair

Deal found 11/6£759

Mon 22/909:05LCY - GEG

3 stops21h 41mMultiple Airlines

Deal found 10/6£791

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

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 9/9

06:15-18:45

2 stops20h 30m

Spokane

Wed 17/9

10:20-10:15

2 stops15h 55m

£474

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Fri 5/9

10:55-22:25

1 stop19h 30m

Spokane

Sat 20/9

13:40-10:55

2 stops37h 15m

£478

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 24/10

11:25-21:24

1 stop16h 59m

Boise Air Term. Gowen Fld

Mon 3/11

10:39-09:40

1 stop16h 01m

£637

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 23/8

13:35-22:54

1 stop16h 19m

Boise Air Term. Gowen Fld

Sun 7/9

08:10-17:15

1 stop26h 05m

£644

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 9/9

13:00-23:59

2 stops18h 59m

Spokane

Wed 17/9

12:39-14:40

2 stops18h 01m

£645

LondonSpokane

LCY - GEG

LCYGEG

London City

Tue 9/9

09:25-23:05

2 stops21h 40m

Spokane

Wed 17/9

07:23-12:30

2 stops21h 07m

£649

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sat 30/8

15:40-22:40

2 stops38h 00m

Boise Air Term. Gowen Fld

Sat 13/9

16:34-14:40

2 stops15h 06m

£662

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 17/9

16:15-13:51

1 stop28h 36m

Jackson Hole

Sat 27/9

15:15-11:10

2 stops36h 55m

£665

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 23/8

12:05-13:49

3 stops32h 44m

Boise Air Term. Gowen Fld

Sun 7/9

19:09-07:25

1 stop29h 16m

£667

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 1/7

08:40-18:56

2 stops18h 16m

Spokane

Thu 10/7

05:05-11:20

1 stop22h 15m

£670

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 52 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

7,946 reviews

Check prices

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!

Delta

8.0

Very Good

7,946 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

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!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

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!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

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!

SWISS

7.5

Good

1,624 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

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!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

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

What are the cheapest airlines to fly from London to Idaho one-way?
£592 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Finnair and WestJet, with prices starting from £714 and £725, respectively.
What are the most popular routes from London to Idaho?
While some choose either London Heathrow - Boise Air Term. Gowen Fld or London City - Jackson Hole, London Heathrow - Jackson Hole 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 Dallas/Fort Worth flights

Heathrow to Las Vegas flights

London City to Los Angeles flights

Heathrow to Baltimore flights

Gatwick to Orlando flights

Manchester to Orlando flights

Heathrow to Atlanta flights

Heathrow to Hobby flights

Stansted to Newark flights

London City to Orlando flights

London City to Boston flights

Gatwick to Stewart flights

London City to Miami flights

London City to LaGuardia flights

Gatwick to Miami flights

Manchester to Newark flights

Gatwick to Los Angeles flights

Heathrow to Tampa flights

Gatwick to O'Hare Intl flights

Luton to Newark flights

Luton to Stewart flights

Manchester to LaGuardia flights

London City to O'Hare Intl flights

Heathrow to Raleigh flights

Edinburgh to Newark flights

Heathrow to Ontario flights

Heathrow to George Bush Intcntl flights

Gatwick to San Francisco flights

Heathrow to Santa Ana flights

Direct flights to United States

Top 6 airlines flying from London to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£511	Average£640	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£524	Average£622	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£528	Average£811	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£531	Average£591	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£584	Average£839	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£661	Average£847	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 £251

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 22/9. 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 13 June 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 13 June 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 13 June 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 13 June 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 13 June 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 6 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 13 June 2025.