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Cheap flights from the United Kingdom to Idaho from £479

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
7 Apr — 14 Apr1
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 2 April 2025.

Round-trip from

£479

Popular in

August

Cheapest in

November

Average price

£684
United Airlines
  • United Airlines
  • 16/5-23/5
  • 3 total stops
  • 47h 59m total
  • United Kingdom to Idaho
Highest demand for flights based on searches. 17% potential increase in price (£121 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Average for round-trip flights in April 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 2 April 2025.

Fri 16/516:15LHR - BOI
2 stops27h 24mUnited Airlines
Fri 23/507:50BOI - LHR
2 stops20h 20mUnited Airlines
Deal found 1/4£479
Fri 16/510:55LGW - GEG
1 stop19h 27mMultiple Airlines
Sun 25/507:10GEG - LGW
1 stop19h 45mMultiple Airlines
Deal found 1/4£567
Tue 6/508:45LCY - BOI
3 stops21h 07mMultiple Airlines
Tue 13/511:02BOI - LCY
2 stops22h 23mMultiple Airlines
Deal found 31/3£590
Tue 6/509:30LHR - BOI
2 stops19h 12mMultiple Airlines
Tue 13/505:00BOI - LHR
3 stops18h 35mMultiple Airlines
Deal found 1/4£595
Fri 16/508:40LHR - GEG
2 stops22h 58mUnited Airlines
Fri 23/507:00GEG - LHR
2 stops19h 40mUnited Airlines
Deal found 1/4£612
Fri 16/513:25LHR - GEG
1 stop13h 20mVirgin Atlantic
Sun 25/517:40GEG - LHR
1 stop33h 40mVirgin Atlantic
Deal found 1/4£620
Wed 17/912:20LHR - JAC
2 stops32h 23mUnited Airlines
Sat 27/913:28JAC - LHR
2 stops15h 17mUnited Airlines
Deal found 2/4£628
Wed 7/511:00LHR - IDA
1 stop14h 10mVirgin Atlantic
Tue 20/512:30IDA - LHR
2 stops19h 05mVirgin Atlantic
Deal found 1/4£633
Wed 7/511:45LHR - IDA
2 stops18h 06mKLM
Tue 20/512:30IDA - LHR
2 stops18h 45mKLM
Deal found 1/4£635
Tue 22/410:55LHR - BOI
1 stop13h 08mKLM
Fri 2/514:15BOI - LHR
1 stop13h 55mKLM
Deal found 1/4£649
Sat 28/612:20LHR - BOI
2 stops58h 35mLufthansa
Mon 7/716:40BOI - LHR
1 stop35h 30mLufthansa
Deal found 1/4£666
Wed 7/513:25LHR - IDA
1 stop16h 11mMultiple Airlines
Tue 20/516:20IDA - LHR
1 stop14h 55mMultiple Airlines
Deal found 1/4£676

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 2 April 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

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 16/5

16:15-12:39

2 stops27h 24m

Boise Air Term. Gowen Fld

Fri 23/5

07:50-11:10

2 stops20h 20m

£479

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Fri 16/5

10:55-22:22

1 stop19h 27m

Spokane

Sun 25/5

07:10-10:55

1 stop19h 45m

£567

LondonBoise

LCY - BOI

LCYBOI

London City

Tue 6/5

08:45-22:52

3 stops21h 07m

Boise Air Term. Gowen Fld

Tue 13/5

11:02-16:25

2 stops22h 23m

£590

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 6/5

09:30-21:42

2 stops19h 12m

Boise Air Term. Gowen Fld

Tue 13/5

05:00-06:35

3 stops18h 35m

£595

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 16/5

08:40-23:38

2 stops22h 58m

Spokane

Fri 23/5

06:20-10:25

1 stop20h 05m

£612

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 16/5

13:25-18:45

1 stop13h 20m

Spokane

Sun 25/5

17:40-11:20

1 stop33h 40m

£620

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 17/9

12:20-13:43

2 stops32h 23m

Jackson Hole

Sat 27/9

14:44-12:20

1 stop14h 36m

£628

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

11:00-18:10

1 stop14h 10m

Idaho Falls Fanning Field

Tue 20/5

12:30-14:35

2 stops19h 05m

£633

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

£635

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 22/4

10:55-17:03

1 stop13h 08m

Boise Air Term. Gowen Fld

Fri 2/5

14:15-11:10

1 stop13h 55m

£649

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Showing 1-10 of 49 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 2 April 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.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals 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

Plan your trip to Idaho by taking into account the average temperature totals 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

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 2 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.

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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
8.0
Very Good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

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

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 WestJet, with whom users have recently found tickets for as low as £484. 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

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

Discover the top 8 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 2 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£509Average£772FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£550Average£815FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£551Average£864FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£558Average£701FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£599Average£852FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£616Average£735FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£634Average£826FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£661Average£822FlexibilityNo cancel feeOn-time76%
Search Icelandair 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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