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 £507. 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 £522. For sooner than that we have options available in the next 3 days from £943.

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 £714. Cheapflights users have found deals in the month of November for as cheap as £523. 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.

£898+ Flights from the United Kingdom to Idaho

Cheap flight deals from United Kingdom to Idaho

Round-trip from	£517
One-way from	£251
Popular in	August
Cheapest in	November
Average price	£678

22/5-25/5
3 total stops
74h 21m total
United Kingdom to Idaho

Search Deals

13/5
2 total stops
58h 32m total
United Kingdom to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£113 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 18 April 2025.

Thu 22/510:45LGW - GEG

1 stop38h 28mMultiple Airlines

Sun 25/515:02GEG - LGW

2 stops35h 53mMultiple Airlines

Deal found 16/4£517

Fri 21/1113:35LHR - BOI

2 stops30h 55mUnited Airlines

Sun 30/1106:48BOI - LHR

1 stop17h 37mUnited Airlines

Deal found 17/4£562

Fri 19/916:15LHR - JAC

2 stops28h 28mUnited Airlines

Sat 27/913:40JAC - LHR

2 stops15h 05mUnited Airlines

Deal found 17/4£627

Mon 2/620:55LHR - GEG

2 stops33h 55mVirgin Atlantic

Mon 9/613:15GEG - LHR

2 stops16h 15mVirgin Atlantic

Deal found 18/4£634

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Mon 2/613:25LHR - GEG

1 stop15h 40mKLM

Mon 9/613:15GEG - LHR

1 stop17h 00mKLM

Deal found 18/4£645

Mon 2/606:30LHR - GEG

2 stops16h 20mDelta

Mon 9/608:20GEG - LHR

1 stop19h 00mDelta

Deal found 18/4£652

Mon 2/607:25LHR - GEG

2 stops21h 23mUnited Airlines

Mon 9/607:25GEG - LHR

1 stop19h 00mUnited Airlines

Deal found 18/4£672

Wed 18/608:30LHR - BOI

2 stops21h 22mLufthansa

Mon 23/614:35BOI - LHR

2 stops32h 45mLufthansa

Deal found 17/4£705

Wed 7/513:25LHR - IDA

1 stop16h 11mMultiple Airlines

Tue 20/516:20IDA - LHR

1 stop14h 55mMultiple Airlines

Deal found 17/4£718

Fri 25/413:30BHX - GEG

2 stops18h 14mDelta

Sat 3/511:15GEG - BHX

2 stops21h 35mDelta

Deal found 17/4£728

Thu 22/510:00LCY - GEG

2 stops38h 00mKLM

Sun 25/516:56GEG - LCY

2 stops39h 44mKLM

Deal found 16/4£738

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 18 April 2025.

Thu 22/510:45LGW - GEG

1 stop38h 28mMultiple Airlines

Sun 25/515:02GEG - LGW

2 stops35h 53mMultiple Airlines

Deal found 16/4£517

Sun 1/614:50LHR - BOI

2 stops32h 09mUnited Airlines

Sun 8/619:07BOI - LHR

1 stop29h 18mUnited Airlines

Deal found 17/4£575

Mon 2/620:55LHR - GEG

2 stops33h 55mVirgin Atlantic

Mon 9/613:15GEG - LHR

2 stops16h 15mVirgin Atlantic

Deal found 18/4£634

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Tue 24/611:30LHR - GEG

2 stops17h 37mDelta

Thu 3/715:25GEG - LHR

1 stop14h 50mDelta

Deal found 17/4£657

Wed 18/608:30LHR - BOI

2 stops21h 22mLufthansa

Mon 23/614:35BOI - LHR

2 stops32h 45mLufthansa

Deal found 17/4£705

Mon 2/607:05LHR - GEG

3 stops17h 55mScandinavian Airlines

Mon 9/611:17GEG - LHR

2 stops22h 23mScandinavian Airlines

Deal found 18/4£744

Sun 1/608:30LHR - BOI

2 stops19h 56mAir Canada

Sun 8/619:07BOI - LHR

2 stops28h 23mAir Canada

Deal found 17/4£751

Thu 22/513:00LGW - BOI

2 stops16h 42mIcelandair

Mon 2/620:41BOI - LGW

2 stops34h 59mIcelandair

Deal found 17/4£784

Tue 12/814:20LHR - BOI

1 stop15h 34mFinnair

Tue 19/807:30BOI - LHR

1 stop15h 55mFinnair

Deal found 17/4£1,019

Sun 1/618:05LCY - BOI

2 stops34h 21mSWISS

Sun 8/614:35BOI - LCY

2 stops35h 15mSWISS

Deal found 17/4£1,044

Thu 7/816:30LHR - BOI

1 stop13h 16mBritish Airways

Fri 15/808:18BOI - LHR

1 stop16h 42mBritish Airways

Deal found 17/4£1,124

Last-minute flights from United Kingdom to Idaho
Discover last-minute flight deals from United Kingdom to Idaho. Data last updated 18 April 2025 and is based on user searches.

Wed 23/408:40LHR - GEG

2 stops20h 46mUnited Airlines

Sat 26/415:25GEG - LHR

2 stops31h 30mUnited Airlines

Deal found 17/4£1,499

Fri 25/413:30BHX - GEG

2 stops18h 14mDelta

Sat 3/511:15GEG - BHX

2 stops21h 35mDelta

Deal found 17/4£728

Fri 25/419:10BHX - GEG

3 stops33h 51mMultiple Airlines

Sat 3/513:40GEG - BHX

2 stops19h 35mMultiple Airlines

Deal found 17/4£1,328

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Wed 7/513:25LHR - IDA

1 stop16h 11mMultiple Airlines

Tue 20/516:20IDA - LHR

1 stop14h 55mMultiple Airlines

Deal found 17/4£718

Sun 11/506:30LHR - IDA

2 stops23h 21mDelta

Fri 20/606:00IDA - LHR

2 stops22h 25mDelta

Deal found 17/4£769

Fri 16/516:15LHR - BOI

2 stops27h 24mUnited Airlines

Fri 30/510:42BOI - LHR

2 stops14h 38mUnited Airlines

Deal found 18/4£536

Thu 22/510:45LGW - GEG

1 stop38h 28mMultiple Airlines

Sun 25/515:02GEG - LGW

2 stops35h 53mMultiple Airlines

Deal found 16/4£517

Thu 22/513:25LHR - GEG

1 stop15h 40mVirgin Atlantic

Sun 25/517:40GEG - LHR

2 stops29h 05mVirgin Atlantic

Deal found 16/4£689

Thu 22/506:30LHR - GEG

2 stops18h 30mDelta

Sun 25/513:20GEG - LHR

2 stops15h 50mDelta

Deal found 16/4£713

Thu 22/510:00LCY - GEG

2 stops38h 00mKLM

Sun 25/516:56GEG - LCY

2 stops39h 44mKLM

Deal found 16/4£738

Thu 22/514:10LHR - BOI

2 stops33h 31mLufthansa

Mon 2/619:07BOI - LHR

2 stops29h 08mLufthansa

Deal found 17/4£769

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 18 April 2025.

Tue 13/519:50LGW - GEG

2 stops58h 32mMultiple Airlines

Deal found 17/4£251

Tue 13/507:30LHR - GEG

2 stops22h 59mMultiple Airlines

Deal found 17/4£360

Thu 11/914:10LHR - BOI

2 stops16h 49mWestJet

Deal found 17/4£507

Mon 18/813:55LHR - BOI

3 stops34h 03mMultiple Airlines

Deal found 16/4£550

Tue 24/607:30LHR - GEG

2 stops17h 34mLufthansa

Deal found 17/4£610

Sat 3/514:10LHR - GEG

2 stops16h 40mWestJet

Deal found 17/4£617

Thu 21/811:25LHR - BOI

1 stop16h 49mLufthansa

Deal found 17/4£624

Mon 12/508:45LCY - GEG

2 stops19h 13mMultiple Airlines

Deal found 17/4£649

Mon 18/819:55LGW - BOI

3 stops33h 59mMultiple Airlines

Deal found 16/4£659

Tue 24/608:45LCY - GEG

2 stops22h 29mLufthansa

Deal found 17/4£661

Sat 3/515:40LGW - GEG

2 stops37h 21mIcelandair

Deal found 17/4£745

Tue 22/415:40LGW - BOI

2 stops37h 59mIcelandair

Deal found 17/4£754

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

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Thu 22/5

10:45-17:13

1 stop38h 28m

Spokane

Sun 25/5

15:02-10:55

2 stops35h 53m

£517

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 1/6

14:50-15:59

2 stops32h 09m

Boise Air Term. Gowen Fld

Sun 8/6

19:07-07:25

1 stop29h 18m

£575

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

£627

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

20:55-22:50

2 stops33h 55m

Spokane

Mon 9/6

13:15-13:30

2 stops16h 15m

£634

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

11:45-22:51

2 stops18h 06m

Idaho Falls Fanning Field

Tue 20/5

12:30-14:15

2 stops18h 45m

£634

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

13:25-21:05

1 stop15h 40m

Spokane

Mon 9/6

13:15-14:15

1 stop17h 00m

£645

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

06:30-18:45

2 stops20h 15m

Spokane

Mon 9/6

13:00-13:10

2 stops16h 10m

£652

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

07:25-20:48

2 stops21h 23m

Spokane

Mon 9/6

07:25-10:25

1 stop19h 00m

£672

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 18/6

08:30-22:52

2 stops21h 22m

Boise Air Term. Gowen Fld

Mon 23/6

14:35-06:20

2 stops32h 45m

£705

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

13:25-22:36

1 stop16h 11m

Idaho Falls Fanning Field

Tue 20/5

16:20-14:15

1 stop14h 55m

£718

Flights are sorted by cheapest return flights first.

Deals found on 17/4

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

7,917 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

KLM

7.8

Good

1,329 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

Finnair

7.6

Good

1,269 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

1,581 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

8,667 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 United Kingdom to Idaho one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £507. 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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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 Gatwick flights

Spokane to Edinburgh flights

Boise to Edinburgh flights

Jackson to Heathrow flights

Spokane to Manchester flights

Spokane to Glasgow Intl flights

Boise to Manchester flights

Jackson to Manchester flights

Lewiston to Heathrow flights

Jackson to Leeds flights

Spokane to Southampton flights

Top 8 airlines flying from United Kingdom to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£496	Average£753	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£536	Average£775	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£538	Average£847	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£545	Average£670	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£584	Average£797	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£601	Average£717	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£618	Average£806	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Icelandair	Cheapest£645	Average£802	FlexibilityNo cancel fee	On-time76%	Search Icelandair 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 £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 13/5. 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 18 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 18 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 18 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 18 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 18 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 8 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 18 April 2025.