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

£498 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Lufthansa and Air New Zealand, with prices starting from £618 and £622, 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 £525.

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 £719. You can even find prices in November for less than £719, as users have found deals to Idaho from as low as £527. 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.

£487+ Flights from London to Idaho

Cheap flight deals from London to Idaho

Round-trip from	£543
One-way from	£487
Popular in	August
Cheapest in	November
Average price	£682

United Airlines
2/6-29/6
3 total stops
45h 21m total
London to Idaho

Search Deals

14/7
3 total stops
47h 30m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£115 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£23 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 15 April 2025.

Mon 2/616:15LHR - BOI

2 stops30h 44mUnited Airlines

Sun 29/619:15BOI - LHR

2 stops28h 05mUnited Airlines

Deal found 14/4£543

Tue 16/908:45LCY - GEG

2 stops33h 53mMultiple Airlines

Tue 30/907:15GEG - LCY

2 stops26h 15mMultiple Airlines

Deal found 15/4£576

Sun 4/510:55LGW - BOI

1 stop32h 47mMultiple Airlines

Sun 18/517:51BOI - LGW

1 stop34h 04mMultiple Airlines

Deal found 14/4£592

Wed 7/506:15LHR - IDA

2 stops23h 36mVirgin Atlantic

Tue 20/512:30IDA - LHR

2 stops35h 15mVirgin Atlantic

Deal found 15/4£619

Fri 19/910:35LHR - JAC

2 stops34h 08mUnited Airlines

Sat 27/913:40JAC - LHR

1 stop15h 40mUnited Airlines

Deal found 14/4£625

Tue 13/508:45LCY - GEG

2 stops20h 05mLufthansa

Tue 20/515:25GEG - LCY

2 stops19h 10mLufthansa

Deal found 15/4£627

Fri 21/1112:30LHR - BOI

1 stop17h 13mKLM

Sun 30/1108:40BOI - LHR

1 stop19h 20mKLM

Deal found 14/4£638

Tue 21/1015:40LGW - GEG

2 stops37h 19mIcelandair

Tue 28/1011:35GEG - LGW

2 stops16h 20mIcelandair

Deal found 14/4£645

Tue 21/1013:05LHR - GEG

2 stops18h 54mIcelandair

Tue 28/1011:35GEG - LHR

2 stops16h 15mIcelandair

Deal found 14/4£647

Wed 30/406:30LHR - IDA

2 stops23h 26mDelta

Sun 4/518:55IDA - LHR

1 stop31h 55mDelta

Deal found 14/4£652

Sat 28/618:00LHR - BOI

2 stops24h 43mLufthansa

Mon 7/719:15BOI - LHR

2 stops28h 05mLufthansa

Deal found 14/4£661

Wed 30/411:15LHR - IDA

1 stop17h 55mAmerican Airlines

Sun 4/512:59IDA - LHR

1 stop34h 26mAmerican Airlines

Deal found 14/4£666

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 15 April 2025.

Mon 2/614:50LHR - BOI

1 stop13h 36mUnited Airlines

Sun 29/616:40BOI - LHR

2 stops31h 45mUnited Airlines

Deal found 14/4£543

Sun 4/510:55LGW - BOI

1 stop32h 47mMultiple Airlines

Sun 18/517:51BOI - LGW

1 stop34h 04mMultiple Airlines

Deal found 14/4£592

Wed 7/506:15LHR - IDA

2 stops23h 36mVirgin Atlantic

Tue 20/512:30IDA - LHR

2 stops35h 15mVirgin Atlantic

Deal found 15/4£619

Sun 4/510:55LHR - BOI

1 stop13h 08mKLM

Sun 18/513:50BOI - LHR

1 stop17h 25mKLM

Deal found 14/4£644

Wed 30/408:40LHR - IDA

2 stops21h 16mDelta

Sun 4/518:55IDA - LHR

2 stops28h 50mDelta

Deal found 14/4£652

Sat 28/618:00LHR - BOI

2 stops24h 43mLufthansa

Mon 7/719:15BOI - LHR

2 stops28h 05mLufthansa

Deal found 14/4£661

Wed 30/411:15LHR - IDA

1 stop17h 55mAmerican Airlines

Sun 4/512:59IDA - LHR

1 stop34h 26mAmerican Airlines

Deal found 14/4£666

Wed 18/615:40LGW - BOI

2 stops38h 06mIcelandair

Mon 23/616:50BOI - LGW

2 stops14h 45mIcelandair

Deal found 14/4£780

Wed 18/606:40LHR - BOI

3 stops18h 54mScandinavian Airlines

Mon 23/614:00BOI - LHR

2 stops20h 40mScandinavian Airlines

Deal found 14/4£879

Fri 19/916:15LHR - JAC

2 stops28h 28mUnited Airlines

Sat 27/913:40JAC - LHR

2 stops15h 05mUnited Airlines

Deal found 14/4£625

Sun 4/508:40LHR - BOI

2 stops20h 21mDelta

Sun 18/511:30BOI - LHR

2 stops16h 55mDelta

Deal found 14/4£707

Sat 27/912:20LHR - JAC

2 stops31h 24mLufthansa

Sat 4/1016:20JAC - LHR

2 stops30h 35mLufthansa

Deal found 14/4£737

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 15 April 2025 and is based on user searches.

Mon 21/412:05LHR - JAC

2 stops34h 18mUnited Airlines

Sun 27/416:15JAC - LHR

1 stop13h 05mUnited Airlines

Deal found 14/4£787

Mon 21/420:10LCY - JAC

2 stops27h 31mKLM

Sun 27/417:55JAC - LCY

2 stops15h 45mKLM

Deal found 14/4£1,012

Wed 23/408:40LHR - GEG

2 stops20h 46mUnited Airlines

Sat 26/416:08GEG - LHR

2 stops30h 22mUnited Airlines

Deal found 14/4£1,492

Wed 30/408:40LHR - IDA

2 stops21h 16mDelta

Sun 4/518:55IDA - LHR

2 stops28h 50mDelta

Deal found 14/4£652

Wed 30/411:15LHR - IDA

1 stop17h 55mAmerican Airlines

Sun 4/512:59IDA - LHR

1 stop34h 26mAmerican Airlines

Deal found 14/4£666

Fri 2/513:05LHR - BOI

1 stop16h 23mKLM

Tue 6/514:15BOI - LHR

1 stop13h 55mKLM

Deal found 15/4£621

Fri 2/515:40LGW - BOI

2 stops37h 59mIcelandair

Tue 6/513:00BOI - LGW

2 stops18h 40mIcelandair

Deal found 15/4£695

Sun 4/510:55LGW - BOI

1 stop32h 47mMultiple Airlines

Sun 18/517:51BOI - LGW

1 stop34h 04mMultiple Airlines

Deal found 14/4£592

Sun 4/508:40LHR - BOI

2 stops20h 21mDelta

Sun 18/511:30BOI - LHR

2 stops16h 55mDelta

Deal found 14/4£707

Tue 6/513:25LHR - BOI

1 stop16h 14mMultiple Airlines

Tue 13/506:30BOI - LHR

1 stop21h 50mMultiple Airlines

Deal found 15/4£616

Wed 7/506:15LHR - IDA

2 stops23h 36mVirgin Atlantic

Tue 20/512:30IDA - LHR

2 stops35h 15mVirgin Atlantic

Deal found 15/4£619

Thu 22/512:20LHR - BOI

1 stop16h 24mLufthansa

Mon 2/614:31BOI - LHR

1 stop16h 39mLufthansa

Deal found 14/4£699

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 15 April 2025.

Mon 14/706:15LHR - BOI

3 stops47h 30mMultiple Airlines

Deal found 15/4£487

Thu 11/914:10LHR - BOI

2 stops16h 49mWestJet

Deal found 14/4£498

Sat 17/507:15LHR - JAC

3 stops35h 14mMultiple Airlines

Deal found 14/4£527

Thu 11/914:50LHR - BOI

1 stop13h 26mLufthansa

Deal found 14/4£618

Thu 21/812:20LHR - BOI

1 stop18h 24mAir New Zealand

Deal found 14/4£622

Sat 3/508:30LHR - GEG

2 stops20h 20mLufthansa

Deal found 14/4£634

Sat 3/514:10LHR - GEG

2 stops16h 40mWestJet

Deal found 15/4£650

Sat 3/508:20LHR - GEG

1 stop21h 18mMultiple Airlines

Deal found 15/4£733

Sat 3/515:40LGW - GEG

2 stops37h 21mIcelandair

Deal found 15/4£736

Tue 22/415:40LGW - BOI

2 stops37h 59mIcelandair

Deal found 14/4£745

Thu 21/808:45LCY - BOI

2 stops19h 31mLufthansa

Deal found 14/4£752

Thu 14/809:05LCY - JAC

2 stops33h 05mMultiple Airlines

Deal found 14/4£973

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

Mon 2/6

16:15-15:59

2 stops30h 44m

Boise Air Term. Gowen Fld

Sun 29/6

19:15-06:20

2 stops28h 05m

£543

LondonSpokane

LCY - GEG

LCYGEG

London City

Tue 16/9

08:45-10:38

2 stops33h 53m

Spokane

Tue 30/9

07:15-17:30

2 stops26h 15m

£576

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sun 4/5

10:55-12:42

1 stop32h 47m

Boise Air Term. Gowen Fld

Sun 18/5

17:51-10:55

1 stop34h 04m

£592

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

06:15-22:51

2 stops23h 36m

Idaho Falls Fanning Field

Tue 20/5

12:30-06:45

2 stops35h 15m

£619

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Fri 19/9

16:15-13:43

2 stops28h 28m

Jackson Hole

Sat 27/9

13:40-11:45

2 stops15h 05m

£625

LondonSpokane

LCY - GEG

LCYGEG

London City

Tue 13/5

08:45-20:50

2 stops20h 05m

Spokane

Tue 20/5

15:25-18:35

2 stops19h 10m

£627

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 4/5

10:55-17:03

1 stop13h 08m

Boise Air Term. Gowen Fld

Sun 18/5

13:50-14:15

1 stop17h 25m

£644

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 30/4

08:40-22:56

2 stops21h 16m

Idaho Falls Fanning Field

Sun 4/5

18:55-06:45

2 stops28h 50m

£652

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 28/6

18:00-11:43

2 stops24h 43m

Boise Air Term. Gowen Fld

Mon 7/7

19:15-06:20

2 stops28h 05m

£661

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 30/4

11:15-22:10

1 stop17h 55m

Idaho Falls Fanning Field

Sun 4/5

12:59-06:25

1 stop34h 26m

£666

Flights are sorted by cheapest return flights first.

Deals found on 15/4

Showing 1-10 of 54 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, Air New Zealand and KLM 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

7,917 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

7,917 reviews

Delta

8.0

Very Good

7,917 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 New Zealand

8.0

Very Good

464 reviews

Delta

8.0

Very Good

7,917 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

1,323 reviews

Delta

8.0

Very Good

7,917 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

1,578 reviews

Delta

8.0

Very Good

7,917 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

United Airlines

7.4

Good

8,656 reviews

Delta

8.0

Very Good

7,917 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?
£498 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Lufthansa and Air New Zealand, with prices starting from £618 and £622, 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 Hobby flights

Heathrow to Baltimore flights

Luton to John F Kennedy Intl flights

London City to Los Angeles flights

Gatwick to Boston flights

Gatwick to Orlando flights

Heathrow to Atlanta flights

Heathrow to George Bush Intcntl flights

London City to Orlando flights

Manchester to Newark flights

Gatwick to Las Vegas flights

Heathrow to Raleigh flights

Heathrow to Nashville flights

London City to Boston flights

London City to Miami flights

Heathrow to Tampa flights

Manchester to LaGuardia flights

Heathrow to Denver flights

Edinburgh to Newark flights

Heathrow to Charlotte flights

Luton to Los Angeles flights

Gatwick to Miami flights

Stansted to Boston flights

London City to San Francisco flights

Gatwick to San Francisco flights

Heathrow to Detroit flights

Edinburgh to John F Kennedy Intl flights

Gatwick 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£500	Average£661	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£540	Average£815	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£541	Average£656	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£548	Average£604	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£588	Average£812	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£675	Average£825	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£683	Average£874	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 £487

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 14/7. 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 15 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 15 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 15 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 15 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 15 April 2025.

See what other customers who have flown with Delta, Air New Zealand and KLM 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 15 April 2025.