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Cheap flights from the United Kingdom to Idaho from £285

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
13 Jul — 20 Jul1
1 adult

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 8 July 2025.

Round-trip from

£516

One-way from

£285

Popular in

August

Cheapest in

November

Average price

£864
United Airlines
  • United Airlines
  • 24/9-28/9
  • 3 total stops
  • 41h 35m total
  • United Kingdom to Idaho
21/9
  • 21/9
  • 2 total stops
  • 32h 49m total
  • United Kingdom to Idaho
Highest demand for flights based on searches. 15% potential increase in price (£90 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 8 July 2025.

Wed 24/908:40LHR - GEG
2 stops22h 25mUnited Airlines
Sun 28/907:15GEG - LHR
1 stop19h 10mUnited Airlines
Deal found 6/7£516
Thu 21/810:45LGW - GEG
1 stop32h 50mMultiple Airlines
Thu 28/806:25GEG - LGW
1 stop20h 30mMultiple Airlines
Deal found 6/7£528
Mon 3/1111:35LHR - GEG
1 stop17h 10mLufthansa
Sat 8/1107:00GEG - LHR
1 stop16h 25mLufthansa
Deal found 7/7£532
Wed 20/817:25LHR - GEG
1 stop14h 37mVirgin Atlantic
Tue 23/1215:15GEG - LHR
1 stop11h 45mVirgin Atlantic
Deal found 6/7£533
Wed 24/909:20LCY - GEG
2 stops17h 25mDelta
Sun 28/914:23GEG - LCY
2 stops33h 47mDelta
Deal found 6/7£580
Thu 28/810:45LGW - BOI
1 stop19h 09mMultiple Airlines
Sat 6/908:10BOI - LGW
1 stop19h 40mMultiple Airlines
Deal found 6/7£626
Fri 5/908:25LHR - BOI
2 stops35h 23mAmerican Airlines
Sun 21/913:07BOI - LHR
2 stops33h 43mAmerican Airlines
Deal found 5/7£626
Mon 4/806:30LHR - GEG
2 stops17h 48mDelta
Mon 11/813:21GEG - LHR
2 stops16h 09mDelta
Deal found 7/7£629
Fri 21/1118:00LHR - BOI
2 stops24h 39mMultiple Airlines
Sun 30/1106:15BOI - LHR
2 stops17h 15mMultiple Airlines
Deal found 6/7£629
Fri 5/907:45LCY - BOI
2 stops22h 09mMultiple Airlines
Sat 20/908:10BOI - LCY
2 stops22h 05mMultiple Airlines
Deal found 6/7£636
Thu 7/812:00LGW - GEG
2 stops19h 12mDelta
Wed 13/809:15GEG - LGW
2 stops16h 45mDelta
Deal found 7/7£641
Fri 24/1007:25LHR - BOI
2 stops22h 05mUnited Airlines
Mon 3/1110:39BOI - LHR
1 stop16h 01mUnited Airlines
Deal found 7/7£642

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 8 July 2025.
Use the filters below to find and compare flights from the United Kingdom to Idaho that are best for you.

Fly from

United Kingdom

Fly to

Idaho

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 24/9

08:40-23:05

2 stops22h 25m

Spokane

Sun 28/9

07:15-10:25

1 stop19h 10m

£516

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Thu 21/8

10:45-11:35

1 stop32h 50m

Spokane

Thu 28/8

06:25-10:55

1 stop20h 30m

£528

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 3/11

11:35-20:45

1 stop17h 10m

Spokane

Sat 8/11

07:00-07:25

1 stop16h 25m

£532

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 20/8

17:25-00:02

1 stop14h 37m

Spokane

Tue 23/12

15:15-11:00

1 stop11h 45m

£533

LondonSpokane

LCY - GEG

LCYGEG

London City

Wed 24/9

09:20-18:45

2 stops17h 25m

Spokane

Sun 28/9

14:23-08:10

2 stops33h 47m

£580

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Thu 28/8

10:45-22:54

1 stop19h 09m

Boise Air Term. Gowen Fld

Sat 6/9

08:10-10:50

1 stop19h 40m

£626

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 5/9

08:25-12:48

2 stops35h 23m

Boise Air Term. Gowen Fld

Sun 21/9

13:07-05:50

2 stops33h 43m

£626

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 4/8

06:30-16:18

2 stops17h 48m

Spokane

Mon 11/8

13:21-13:30

2 stops16h 09m

£629

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 21/11

18:00-11:39

2 stops24h 39m

Boise Air Term. Gowen Fld

Sun 30/11

06:15-06:30

2 stops17h 15m

£629

LondonBoise

LCY - BOI

LCYBOI

London City

Fri 5/9

07:45-22:54

2 stops22h 09m

Boise Air Term. Gowen Fld

Sat 20/9

08:10-13:15

2 stops22h 05m

£636

Flights are sorted by cheapest return flights first.

Deals found on 5/7

Showing 1-10 of 60 results
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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?

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 8 July 2025.

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.

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 8 July 2025.
See what other customers who have flown with Delta, KLM, andFinnair from the United Kingdom to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!
8.0
Very Good

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

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

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?

    The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as £542. However, be on the lookout for offers from Iberia and Finnair, 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

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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

Discover the top 9 airlines that operate flights from United Kingdom to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 8 July 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£523Average£745FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£527Average£762FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£528Average£660FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£530Average£676FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£585Average£693FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£594Average£823FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£606Average£824FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£627Average£771FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£647Average£722FlexibilityNo cancel feeOn-time77%
Search Air France flights

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?

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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