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

The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £515. However, be on the lookout for offers from Lufthansa and Icelandair, as they are both options that can get you from United Kingdom to Idaho for a low price.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 12 days in advance, which can save you up to 21% on flights from United Kingdom to Idaho compared to booking the week you need them. Waiting 12 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £515. For sooner than that we have options available in the next 3 days from £931.

What is the cheapest month to fly from United Kingdom to Idaho?

November can be a great time to fly to Idaho from United Kingdom with a flight ticket averaging about £705. Cheapflights users have found deals in the month of November for as cheap as £518. The most expensive prices can be found in the month of August.

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

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

How can I find direct flights from United Kingdom to Idaho?

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

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

Yes. Cheapflights offers flight deals from United Kingdom 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.

£880+ Flights from the United Kingdom to Idaho

Cheap flight deals from United Kingdom to Idaho

Round-trip from	£578
One-way from	£432
Popular in	August
Cheapest in	November
Average price	£667

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

Search Deals

16/8
2 total stops
48h 35m total
United Kingdom 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 United Kingdom to Idaho

Cheapest flights from United Kingdom to Idaho
Explore the most affordable flight options available from United Kingdom 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

Tue 24/609:55LHR - GEG

2 stops19h 12mDelta

Thu 3/709:40GEG - LHR

2 stops19h 30mDelta

Deal found 28/4£647

Wed 11/613:45LHR - GEG

2 stops41h 29mUnited Airlines

Wed 18/618:00GEG - LHR

1 stop34h 20mUnited Airlines

Deal found 28/4£664

Mon 9/607:25LHR - BOI

2 stops17h 36mUnited Airlines

Mon 30/607:00BOI - LHR

2 stops17h 15mUnited Airlines

Deal found 28/4£667

Tue 24/615:10LHR - GEG

1 stop16h 10mAmerican Airlines

Thu 3/715:10GEG - LHR

1 stop15h 30mAmerican Airlines

Deal found 28/4£667

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

Best flights from United Kingdom to Idaho
Discover carefully curated flight deals from United Kingdom 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

Tue 24/609:55LHR - GEG

2 stops19h 12mDelta

Thu 3/709:40GEG - LHR

2 stops19h 30mDelta

Deal found 28/4£647

Wed 11/613:45LHR - GEG

2 stops41h 29mUnited Airlines

Wed 18/618:00GEG - LHR

1 stop34h 20mUnited Airlines

Deal found 28/4£664

Tue 24/615:10LHR - GEG

1 stop16h 10mAmerican Airlines

Thu 3/715:10GEG - LHR

1 stop15h 30mAmerican Airlines

Deal found 28/4£667

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 29/4£828

Fri 18/708:30LHR - GEG

2 stops21h 29mAir Canada

Tue 29/705:30GEG - LHR

2 stops17h 00mAir Canada

Deal found 28/4£978

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

Thu 8/509:30LHR - GEG

2 stops43h 20mUnited Airlines

Sun 11/515:25GEG - LHR

1 stop32h 00mUnited Airlines

Deal found 28/4£939

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 22/509:50LHR - 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 22/509:20LCY - BOI

2 stops22h 02mVirgin Atlantic

Mon 2/613:50BOI - LCY

2 stops19h 50mVirgin Atlantic

Deal found 28/4£808

Tue 27/510:55LHR - IDA

1 stop14h 15mKLM

Tue 10/615:04IDA - LHR

2 stops15h 06mKLM

Deal found 29/4£779

Tue 27/508:20LHR - IDA

1 stop19h 57mAmerican Airlines

Tue 10/607:00IDA - LHR

1 stop19h 00mAmerican Airlines

Deal found 29/4£837

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

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

Mon 12/513:55LHR - GEG

2 stops16h 55mWestJet

Deal found 28/4£599

Mon 12/516:15LHR - GEG

1 stop15h 23mLufthansa

Deal found 28/4£611

Thu 11/911:25LHR - BOI

1 stop16h 49mLufthansa

Deal found 29/4£614

Tue 24/615:10LHR - GEG

1 stop16h 10mMultiple Airlines

Deal found 28/4£640

Tue 24/608:45LCY - GEG

2 stops22h 29mLufthansa

Deal found 29/4£657

Mon 12/515:40LGW - GEG

2 stops37h 21mIcelandair

Deal found 29/4£743

Thu 21/808:45LCY - BOI

2 stops19h 29mLufthansa

Deal found 29/4£757

Sat 19/721:25LHR - GEG

2 stops34h 34mIcelandair

Deal found 27/4£864

Sat 21/613:00LGW - BOI

2 stops16h 58mIcelandair

Deal found 29/4£1,025

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom 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

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 24/6

09:55-21:07

2 stops19h 12m

Spokane

Thu 3/7

09:40-13:10

2 stops19h 30m

£647

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 11/6

13:45-23:14

2 stops41h 29m

Spokane

Wed 18/6

18:00-12:20

1 stop34h 20m

£664

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/6

07:25-18:01

2 stops17h 36m

Boise Air Term. Gowen Fld

Mon 30/6

07:00-07:15

2 stops17h 15m

£667

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 24/6

15:10-23:20

1 stop16h 10m

Spokane

Thu 3/7

15:10-14:40

1 stop15h 30m

£667

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

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 55 results

...

Best time to book a flight from United Kingdom to Idaho

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

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

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

When flying from United Kingdom 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 United Kingdom to Idaho have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,936 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

7,936 reviews

Delta

8.0

Very Good

7,936 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

1,333 reviews

Delta

8.0

Very Good

7,936 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

1,273 reviews

Delta

8.0

Very Good

7,936 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

7,936 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

7,936 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 United Kingdom to Idaho one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £515. However, be on the lookout for offers from Lufthansa and Icelandair, as they are both options that can get you from United Kingdom to Idaho for a low price.
Can I find deals for flights from United Kingdom to Idaho that include hotel bookings?
Yes. In addition to deals on United Kingdom to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from United Kingdom to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Idaho.
Can I find deals for business class flights from United Kingdom to Idaho?
Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Idaho?
Currently, October is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of £754). Flying from United Kingdom 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 United Kingdom to Idaho

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Gatwick to Los Angeles flights

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London City to O'Hare Intl flights

Gatwick to O'Hare Intl flights

Heathrow to Austin flights

Luton to Newark flights

Luton to Los Angeles flights

Direct flights to United States

Find a return flight route from Idaho

Boise to Heathrow flights

Boise to Gatwick flights

Spokane to Heathrow flights

Spokane to Edinburgh flights

Spokane to Gatwick flights

Boise to Edinburgh flights

Spokane to Glasgow Intl flights

Spokane to Manchester flights

Jackson to Heathrow flights

Spokane to Southampton flights

Jackson to Manchester flights

Boise to Manchester flights

Lewiston to Heathrow flights

Jackson to Leeds flights

Top 9 airlines flying from United Kingdom to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£490	Average£741	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£531	Average£850	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£534	Average£785	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£538	Average£661	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£577	Average£790	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£594	Average£704	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£611	Average£820	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Icelandair	Cheapest£637	Average£796	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air France	Cheapest£660	Average£710	FlexibilityNo cancel fee	On-time77%	Search Air France flights

Fly with Cheapflights

How does Cheapflights help users find flights from United Kingdom to Idaho?

Deals for United Kingdom 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 United Kingdom to Idaho?

Cheapflights helps you find that perfect flight to Idaho from United Kingdom 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 United Kingdom to Idaho with no change fees?

Need flexible booking options for your flight to Idaho from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for United Kingdom to Idaho flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from the United Kingdom to Idaho from £432

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from United Kingdom to Idaho

Keep the following information in mind while searching for United Kingdom 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 United Kingdom to Idaho

Cheapest flights from United Kingdom to IdahoExplore the most affordable flight options available from United Kingdom 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 United Kingdom 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 the United Kingdom to Idaho that are best for you.

Best time to book a flight from United Kingdom to Idaho

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

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Idaho

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

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

Find hourly flight availability from United Kingdom 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 United Kingdom to Idaho have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom to Idaho one-way?

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

How can I find direct flights from United Kingdom to Idaho?

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

What is the cheapest month to book a flight from United Kingdom 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 United Kingdom to Idaho

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

Top 9 airlines flying from United Kingdom 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 United Kingdom to Idaho?

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

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

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

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