How long is the flight from United Kingdom to Idaho?

Departing from United Kingdom to Idaho will take you 15h 58m. The distance between United Kingdom and Idaho is about 4829 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Idaho as you normally would.

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 vacation 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.

$558+ Flights from the United Kingdom to Idaho

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1. Tell us where you want to go

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2. Select your favorite providers

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Cheap 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 December 12, 2025.

Wed 12/315:20 pmLHR - GEG

1 stop35h 26mAir France

Wed 1/712:55 pmGEG - LHR

1 stop34h 55mAir France

Deal found 12/10

$1,066

Sun 12/2812:05 pmLHR - BOI

2 stops32h 31mUnited Airlines

Tue 1/132:20 pmBOI - LHR

1 stop14h 40mUnited Airlines

Deal found 12/10

$1,094

Sun 12/285:20 pmLHR - BOI

1 stop27h 07mDelta

Tue 1/1311:20 amBOI - LHR

1 stop15h 40mDelta

Deal found 12/10

$1,114

Wed 12/316:35 amLHR - GEG

2 stops22h 23mLufthansa

Wed 1/71:48 pmGEG - LHR

2 stops32h 07mLufthansa

Deal found 12/10

$1,274

Thu 12/1111:55 amLGW - BOI

2 stops18h 55mMultiple Airlines

Fri 1/99:02 amBOI - LGW

2 stops18h 53mMultiple Airlines

Deal found 12/10

$1,309

Wed 12/318:40 amLHR - GEG

2 stops22h 36mDelta

Wed 1/79:55 amGEG - LHR

1 stop16h 05mDelta

Deal found 12/10

$1,321

Mon 12/1511:05 amLHR - GEG

1 stop17h 05mVirgin Atlantic

Mon 12/226:00 amGEG - LHR

1 stop17h 05mVirgin Atlantic

Deal found 12/11

$1,368

Sun 12/286:00 amMAN - BOI

2 stops25h 04mDelta

Tue 1/139:15 amBOI - MAN

2 stops23h 50mDelta

Deal found 12/10

$1,373

Wed 12/316:10 pmLCY - GEG

2 stops34h 48mLufthansa

Wed 1/71:48 pmGEG - LCY

2 stops43h 52mLufthansa

Deal found 12/10

$1,388

Thu 12/1112:15 pmLHR - BOI

2 stops18h 35mMultiple Airlines

Fri 1/99:02 amBOI - LHR

2 stops18h 48mMultiple Airlines

Deal found 12/10

$1,389

Mon 12/158:40 amLHR - GEG

2 stops19h 30mKLM

Mon 12/226:00 amGEG - LHR

1 stop17h 05mKLM

Deal found 12/11

$1,395

Thu 12/117:40 amLHR - BOI

2 stops17h 27mLufthansa

Fri 1/98:15 amBOI - LHR

1 stop16h 40mLufthansa

Deal found 12/10

$1,444

Best flights from United Kingdom to Idaho
Discover carefully curated flight deals from United Kingdom to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Tue 3/106:35 amLHR - GEG

2 stops21h 43mUnited Airlines

Tue 3/175:00 amGEG - LHR

2 stops19h 55mUnited Airlines

Deal found 12/10

$743

Mon 4/201:05 pmLHR - BOI

1 stop15h 58mLufthansa

Mon 4/272:40 pmBOI - LHR

1 stop12h 00mLufthansa

Deal found 12/10

$781

Tue 3/1011:55 amLGW - GEG

2 stops16h 42mIcelandair

Tue 3/1712:00 pmGEG - LGW

2 stops15h 55mIcelandair

Deal found 12/10

$824

Tue 3/1011:55 amLGW - GEG

2 stops18h 06mMultiple Airlines

Tue 3/1712:00 pmGEG - LGW

2 stops15h 55mMultiple Airlines

Deal found 12/11

$855

Mon 5/1811:00 amMAN - BOI

1 stop18h 38mVirgin Atlantic

Wed 6/1710:24 amBOI - MAN

2 stops17h 06mVirgin Atlantic

Deal found 12/11

$1,322

Sun 12/286:00 amMAN - BOI

2 stops25h 04mDelta

Tue 1/139:15 amBOI - MAN

2 stops23h 50mDelta

Deal found 12/10

$1,373

Mon 4/206:55 amLHR - BOI

2 stops33h 59mUnited Airlines

Mon 4/276:15 amBOI - LHR

2 stops22h 20mUnited Airlines

Deal found 12/10

$759

Fri 1/236:30 amLHR - GEG

2 stops20h 46mLufthansa

Fri 1/306:53 amGEG - LHR

1 stop16h 32mLufthansa

Deal found 12/10

$813

Mon 4/203:40 pmLGW - BOI

2 stops37h 41mIcelandair

Mon 4/275:30 pmBOI - LGW

2 stops38h 10mIcelandair

Deal found 12/10

$846

Fri 2/2711:10 amLHR - BOI

2 stops19h 38mUnited Airlines

Mon 3/96:15 amBOI - LHR

1 stop21h 25mUnited Airlines

Deal found 12/10

$783

Mon 5/49:15 amLCY - GEG

2 stops44h 20mLufthansa

Sun 5/107:00 amGEG - LCY

2 stops27h 35mLufthansa

Deal found 12/11

$861

Thu 1/226:35 amLHR - BOI

2 stops18h 32mUnited Airlines

Mon 1/267:05 pmBOI - LHR

1 stop33h 55mUnited Airlines

Deal found 12/9

$783

Thu 5/710:20 amLGW - BOI

2 stops19h 01mMultiple Airlines

Sun 5/172:20 pmBOI - LGW

2 stops21h 30mMultiple Airlines

Deal found 12/11

$1,012

Thu 1/1511:10 amLHR - GEG

2 stops31h 34mUnited Airlines

Mon 1/194:10 pmGEG - LHR

1 stop33h 30mUnited Airlines

Deal found 12/10

$784

Mon 5/43:40 pmLGW - GEG

2 stops16h 33mIcelandair

Sun 5/1011:35 amGEG - LGW

2 stops19h 05mIcelandair

Deal found 12/10

$969

Fri 5/15:45 amEDI - BOI

3 stops24h 19mScandinavian Airlines

Fri 5/151:00 pmBOI - EDI

2 stops22h 25mScandinavian Airlines

Deal found 12/11

$2,176

Fri 2/206:30 amLHR - BOI

2 stops21h 25mUnited Airlines

Mon 3/25:10 pmBOI - LHR

2 stops31h 20mUnited Airlines

Deal found 12/10

$785

Sat 1/1010:10 amLHR - SUN

2 stops18h 45mMultiple Airlines

Sat 1/1712:55 pmSUN - LHR

1 stop14h 05mMultiple Airlines

Deal found 12/10

$1,062

Thu 1/1511:55 amLGW - GEG

2 stops17h 30mIcelandair

Mon 1/1912:10 pmGEG - LGW

2 stops14h 45mIcelandair

Deal found 12/9

$986

Mon 5/48:45 amLHR - GEG

2 stops20h 50mUnited Airlines

Sun 5/105:00 amGEG - LHR

1 stop23h 20mUnited Airlines

Deal found 12/10

$794

Tue 1/206:35 amLHR - JAC

2 stops21h 07mLufthansa

Tue 1/2710:40 amJAC - LHR

1 stop16h 00mLufthansa

Deal found 12/11

$1,071

Thu 1/2211:55 amLGW - BOI

2 stops16h 10mIcelandair

Mon 1/2611:35 amBOI - LGW

2 stops16h 20mIcelandair

Deal found 12/9

$1,049

Sat 1/247:40 amLHR - JAC

1 stop34h 42mLufthansa

Sat 1/311:41 pmJAC - LHR

1 stop16h 49mLufthansa

Deal found 12/10

$1,170

Fri 5/19:00 amEDI - BOI

1 stop20h 38mDelta

Fri 5/151:43 pmBOI - EDI

1 stop15h 22mDelta

Deal found 12/11

$1,574

Mon 5/181:05 pmMAN - BOI

2 stops16h 37mIcelandair

Wed 6/176:00 amBOI - MAN

2 stops46h 40mIcelandair

Deal found 12/11

$1,079

Fri 3/69:25 amEDI - BOI

2 stops20h 26mUnited Airlines

Mon 3/96:55 pmBOI - EDI

2 stops30h 00mUnited Airlines

Deal found 12/9

$916

Tue 3/3111:00 amMAN - GEG

1 stop18h 34mMultiple Airlines

Tue 5/510:05 amGEG - MAN

2 stops17h 35mMultiple Airlines

Deal found 12/10

$1,353

Thu 1/299:25 amMAN - GEG

2 stops33h 19mUnited Airlines

Mon 2/212:24 pmGEG - MAN

2 stops39h 56mUnited Airlines

Deal found 12/9

$934

Tue 3/3111:00 amMAN - GEG

1 stop18h 34mDelta

Tue 5/510:45 pmGEG - MAN

1 stop25h 25mDelta

Deal found 12/10

$1,767

Tue 3/311:05 pmMAN - GEG

2 stops15h 47mIcelandair

Tue 5/512:44 pmGEG - MAN

2 stops14h 56mIcelandair

Deal found 12/10

$1,242

Last-minute flights from United Kingdom to Idaho
Discover last-minute flight deals from United Kingdom to Idaho. Data last updated December 12, 2025 and is based on user searches.

Wed 1/78:55 amLHR - GEG

2 stops22h 26mDelta

Thu 1/2911:25 amGEG - LHR

1 stop15h 05mDelta

Deal found 12/11

$900

Thu 1/1511:10 amLHR - GEG

2 stops40h 06mUnited Airlines

Mon 1/195:00 amGEG - LHR

2 stops42h 30mUnited Airlines

Deal found 12/10

$784

Thu 1/156:00 amMAN - BOI

2 stops61h 39mUnited Airlines

Mon 1/192:37 pmBOI - MAN

2 stops38h 43mUnited Airlines

Deal found 12/9

$954

Thu 1/1511:55 amLGW - GEG

2 stops17h 30mIcelandair

Mon 1/1912:10 pmGEG - LGW

2 stops14h 45mIcelandair

Deal found 12/9

$986

Thu 1/226:35 amLHR - BOI

2 stops18h 32mUnited Airlines

Mon 1/268:15 amBOI - LHR

2 stops17h 55mUnited Airlines

Deal found 12/9

$783

Thu 1/2211:55 amLGW - BOI

2 stops16h 10mIcelandair

Mon 1/2611:35 amBOI - LGW

2 stops16h 20mIcelandair

Deal found 12/9

$1,049

Fri 1/2312:15 pmLHR - GEG

2 stops20h 08mMultiple Airlines

Fri 1/307:30 amGEG - LHR

2 stops19h 20mMultiple Airlines

Deal found 12/10

$652

Fri 1/236:30 amLHR - GEG

2 stops20h 46mLufthansa

Fri 1/306:53 amGEG - LHR

1 stop16h 32mLufthansa

Deal found 12/10

$813

Sat 1/241:30 pmLHR - GEG

2 stops29h 14mUnited Airlines

Sat 1/3111:25 amGEG - LHR

2 stops15h 40mUnited Airlines

Deal found 12/10

$825

Sat 1/2411:35 amLHR - GEG

1 stop35h 46mLufthansa

Sat 1/3111:25 amGEG - LHR

1 stop15h 50mLufthansa

Deal found 12/10

$848

Sat 1/2411:55 amLGW - GEG

2 stops17h 30mIcelandair

Sat 1/3112:10 pmGEG - LGW

2 stops14h 45mIcelandair

Deal found 12/10

$922

Thu 1/299:25 amMAN - GEG

2 stops33h 19mUnited Airlines

Mon 2/212:24 pmGEG - MAN

2 stops39h 56mUnited Airlines

Deal found 12/9

$934

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 December 12, 2025.

Sun 1/251:45 pmLHR - GEG

2 stops52h 59mUnited Airlines

Deal found 12/11

$558

Sat 5/168:50 pmLHR - BOI

2 stops55h 00mMultiple Airlines

Deal found 12/11

$579

Sat 5/169:05 pmLGW - BOI

2 stops51h 00mMultiple Airlines

Deal found 12/11

$623

Sat 5/168:20 amLHR - BOI

1 stop19h 47mFinnair

Deal found 12/11

$821

Sat 1/38:35 pmLHR - GEG

3 stops58h 35mMultiple Airlines

Deal found 12/11

$1,233

Thu 12/188:35 pmLHR - BOI

2 stops31h 35mIcelandair

Deal found 12/10

$1,299

Sat 1/312:05 pmLHR - GEG

2 stops35h 14mUnited Airlines

Deal found 12/11

$1,399

Thu 12/1811:35 amLHR - BOI

1 stop13h 28mLufthansa

Deal found 12/11

$1,585

Sat 1/310:30 pmLGW - GEG

3 stops47h 41mMultiple Airlines

Deal found 12/11

$1,655

Sat 12/2010:45 amLHR - SUN

1 stop14h 17mDelta

Deal found 12/11

$1,673

Sat 1/310:05 amLHR - GEG

1 stop19h 26mLufthansa

Deal found 12/11

$1,681

Sat 12/2010:05 amLHR - SUN

1 stop18h 14mUnited Airlines

Deal found 12/10

$1,703

Find flight deals from United Kingdom to Idaho

Round-trip from	$652 (Trip.com)
One-way from	$558 (United Airlines)
Popular in	December
Cheapest in	September
Average price	$1,489

From United Kingdom to Idaho

Search Deals

One-way flight from United Kingdom to Idaho

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($99 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

6:35 am-9:18 pm

2 stops21h 43m

Spokane

Tue 3/17

5:00 am-7:55 am

2 stops19h 55m

$743

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

6:55 am-9:54 am

2 stops33h 59m

Boise Air Term. Gowen Fld

Mon 4/27

6:15 am-11:35 am

2 stops22h 20m

$759

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

1:05 pm-10:03 pm

1 stop15h 58m

Boise Air Term. Gowen Fld

Mon 4/27

2:40 pm-9:40 am

1 stop12h 00m

$781

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/27

11:10 am-11:48 pm

2 stops19h 38m

Boise Air Term. Gowen Fld

Mon 3/9

6:15 am-9:40 am

1 stop21h 25m

$783

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 1/22

6:35 am-6:07 pm

2 stops18h 32m

Boise Air Term. Gowen Fld

Mon 1/26

7:05 pm-12:00 pm

1 stop33h 55m

$783

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 1/15

11:10 am-10:44 am

2 stops31h 34m

Spokane

Mon 1/19

4:10 pm-9:40 am

1 stop33h 30m

$784

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/20

6:30 am-8:55 pm

2 stops21h 25m

Boise Air Term. Gowen Fld

Mon 3/2

5:10 pm-7:30 am

2 stops31h 20m

$785

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 5/4

8:45 am-9:35 pm

2 stops20h 50m

Spokane

Sun 5/10

5:00 am-12:20 pm

1 stop23h 20m

$794

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 1/23

6:30 am-7:16 pm

2 stops20h 46m

Spokane

Fri 1/30

6:53 am-7:25 am

1 stop16h 32m

$813

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 3/10

11:55 am-9:37 pm

2 stops16h 42m

Spokane

Tue 3/17

12:00 pm-10:55 am

2 stops15h 55m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 44 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 round-trip 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, March is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of $685). Flying from United Kingdom to Idaho in July is currently the most expensive (average of $905). 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.

Related info for your journey

How long is the flight from United Kingdom to Idaho?
Departing from United Kingdom to Idaho will take you 15h 58m. The distance between United Kingdom and Idaho is about 4829 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 vacation 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, March is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of $685). Flying from United Kingdom to Idaho in July is currently the most expensive (average of $905). 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

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$558+ Cheap flights from the United Kingdom to Idaho

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from United Kingdom to Idaho with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap 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 December 12, 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 December 12, 2025.

Find 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 December 12, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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?

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.

How long is the flight from United Kingdom to Idaho?

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

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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 December 12, 2025.