How long is the flight from United Kingdom to Idaho?

Departing from United Kingdom to Idaho will take you 18h 49m. The distance between United Kingdom and Idaho is about 4829 mi. This flight may include one or multiple stops.

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.

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).

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.

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.

£368+ Cheap Flights from the United Kingdom to Idaho

Cheap flight deals from United Kingdom to Idaho

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 29 August 2026.

Fri 25/906:40 -

2 stops22h 54m

Sat 3/1010:34 -

2 stops24h 06m

Deal found 25/8£595

Tue 13/1014:30 -

1 stop15h 27m

Tue 20/1007:20 -

1 stop19h 55m

Deal found 28/8£596

Tue 13/1014:30 -

1 stop17h 05m

Tue 20/1014:51 -

1 stop18h 44m

Deal found 29/8£615

Sat 3/1006:40 -

2 stops19h 00m

Sat 10/1012:08 -

2 stops26h 32m

Deal found 25/8£625

Thu 15/1017:00 -

1 stop13h 59m

Tue 27/1016:18 -

1 stop14h 02m

Deal found 28/8£639

Sun 11/1011:40 -

1 stop19h 19m

Sun 18/1016:18 -

1 stop16h 17m

Deal found 27/8£666

Tue 17/1106:35 -

2 stops20h 06m

Tue 24/1107:00 -

1 stop16h 25m

Deal found 26/8£668

Mon 16/1107:30 -

2 stops22h 21m

Mon 30/1114:51 -

1 stop11h 49m

Deal found 26/8£669

Fri 25/911:25 -

1 stop17h 10m

Sat 3/1008:08 -

1 stop17h 22m

Deal found 25/8£677

Sat 21/1106:35 -

2 stops21h 40m

Sat 28/1117:44 -

1 stop32h 56m

Deal found 26/8£686

Tue 17/1109:50 -

2 stops19h 21m

Tue 24/1107:00 -

2 stops26h 40m

Deal found 26/8£686

Fri 20/1107:30 -

2 stops17h 33m

Sun 29/1110:34 -

1 stop16h 06m

Deal found 26/8£687

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 29 August 2026.

Sat 21/1111:10 -

2 stops18h 49m

Sun 29/1110:34 -

1 stop16h 06m

Deal found 26/8£686

Tue 17/1109:50 -

2 stops19h 21m

Tue 24/1107:00 -

2 stops26h 40m

Deal found 26/8£686

Thu 28/114:45 -

1 stop31h 36m

Mon 1/213:56 -

1 stop15h 24m

Deal found 28/8£724

Fri 9/1015:05 -

2 stops25h 28m

Fri 16/1014:44 -

1 stop11h 56m

Deal found 25/8£728

Fri 9/1011:25 -

1 stop13h 18m

Fri 16/1017:30 -

2 stops16h 35m

Deal found 25/8£748

Tue 8/913:00 -

2 stops40h 48m

Tue 6/1016:41 -

2 stops37h 59m

Deal found 28/8£753

Fri 25/911:30 -

2 stops41h 57m

Sat 3/1013:50 -

2 stops23h 10m

Deal found 25/8£817

Tue 22/906:15 -

2 stops19h 02m

Tue 29/906:00 -

1 stop22h 00m

Deal found 25/8£827

Tue 13/1008:15 -

2 stops20h 27m

Tue 20/1013:50 -

1 stop14h 00m

Deal found 29/8£834

Mon 12/1018:35 -

2 stops34h 35m

Mon 19/1013:05 -

2 stops35h 10m

Deal found 28/8£847

Tue 13/1010:55 -

1 stop14h 21m

Tue 20/1013:05 -

1 stop14h 55m

Deal found 29/8£867

Tue 8/906:45 -

2 stops21h 57m

Tue 6/1006:00 -

2 stops27h 20m

Deal found 29/8£1,062

Fri 20/1109:30 -

2 stops18h 45m

Fri 27/1106:30 -

2 stops16h 25m

Deal found 26/8£694

Thu 14/114:45 -

1 stop26h 56m

Mon 18/119:37 -

1 stop33h 43m

Deal found 26/8£727

Mon 16/1110:25 -

2 stops18h 55m

Mon 30/1114:00 -

2 stops18h 00m

Deal found 26/8£739

Sat 31/1006:35 -

2 stops20h 57m

Sun 6/1216:24 -

2 stops31h 46m

Deal found 29/8£695

Sat 21/1107:30 -

2 stops21h 04m

Sat 28/1112:31 -

2 stops17h 19m

Deal found 29/8£770

Thu 15/1017:00 -

2 stops26h 28m

Tue 27/1007:20 -

2 stops23h 00m

Deal found 28/8£751

Wed 30/915:40 -

2 stops40h 19m

Wed 14/1012:42 -

2 stops17h 58m

Deal found 27/8£828

Tue 22/908:55 -

1 stop19h 25m

Tue 29/913:58 -

1 stop15h 17m

Deal found 25/8£842

Tue 13/1010:20 -

2 stops16h 46m

Tue 20/1014:06 -

2 stops21h 44m

Deal found 28/8£772

Thu 14/111:35 -

2 stops31h 49m

Mon 18/107:02 -

1 stop20h 13m

Deal found 25/8£708

Mon 14/1210:00 -

2 stops19h 05m

Tue 29/1206:25 -

2 stops18h 35m

Deal found 25/8£901

Thu 1/1009:15 -

2 stops21h 01m

Mon 19/1013:05 -

2 stops20h 50m

Deal found 26/8£835

Tue 29/915:40 -

2 stops16h 19m

Thu 15/1016:41 -

2 stops13h 59m

Deal found 28/8£852

Thu 15/1010:20 -

2 stops18h 46m

Tue 27/1014:06 -

2 stops23h 14m

Deal found 28/8£776

Fri 20/1113:35 -

1 stop16h 16m

Sun 29/1114:51 -

1 stop11h 49m

Deal found 26/8£711

Thu 14/114:45 -

1 stop15h 42m

Mon 18/112:35 -

1 stop15h 45m

Deal found 27/8£793

Fri 25/1214:55 -

1 stop28h 02m

Thu 14/107:55 -

2 stops24h 10m

Deal found 29/8£943

Fri 9/1015:40 -

2 stops25h 16m

Fri 16/1016:18 -

2 stops15h 22m

Deal found 25/8£793

Find flight deals from United Kingdom to Idaho

Round-trip from	£595
One-way from	£368
Popular in	December
Cheapest in	January
Average price	£1,098

Scandinavian Airlines
25/9-3/10
4 total stops
47h 00m total
United Kingdom to Idaho

Search Deals

21/10
3 total stops
39h 13m total
United Kingdom to Idaho

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

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

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

11:10-22:59

2 stops18h 49m

Boise Air Term. Gowen Fld

Sun 29/11

10:34-09:40

1 stop16h 06m

£686

LondonSpokane

LCY London City - GEG Spokane

LCYGEG

London City

Tue 17/11

09:50-21:11

2 stops19h 21m

Spokane

Tue 24/11

07:00-17:40

2 stops26h 40m

£686

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 20/11

09:30-21:15

2 stops18h 45m

Boise Air Term. Gowen Fld

Fri 27/11

06:30-05:55

2 stops16h 25m

£694

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 31/10

06:35-21:32

2 stops20h 57m

Boise Air Term. Gowen Fld

Sun 6/12

16:24-07:10

2 stops31h 46m

£695

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 14/1

11:35-11:24

2 stops31h 49m

Spokane

Mon 18/1

07:02-11:15

1 stop20h 13m

£708

Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 20/11

13:35-22:51

1 stop16h 16m

Boise Air Term. Gowen Fld

Sun 29/11

14:51-09:40

1 stop11h 49m

£711

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 28/1

14:45-15:21

1 stop31h 36m

Idaho Falls Fanning Field

Mon 1/2

13:56-12:20

1 stop15h 24m

£724

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Thu 14/1

14:45-10:41

1 stop26h 56m

Hailey Sun Valley-Friedman

Mon 18/1

19:37-12:20

1 stop33h 43m

£727

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 9/10

15:05-09:33

2 stops25h 28m

Boise Air Term. Gowen Fld

Fri 16/10

14:44-09:40

1 stop11h 56m

£728

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Mon 16/11

10:25-22:20

2 stops18h 55m

Boise Air Term. Gowen Fld

Mon 30/11

14:00-15:00

2 stops18h 00m

£739

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LHR-BOI

LCY-GEG

LHR-IDA

LGW-GEG

LGW-BOI

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

GB0-USID

LHR-BOI

LCY-GEG

LHR-IDA

LGW-GEG

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 £646). Flying from United Kingdom to Idaho in August is currently the most expensive (average of £1,101). 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.

Reviews of airlines servicing Idaho

See what other customers who have flown with KLM,United Airlines, andVirgin Atlantic 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.

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

KLM

7.8

Good

1,567 reviews

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

United Airlines

7.4

Good

10,135 reviews

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Virgin Atlantic

7.4

Good

695 reviews

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Icelandair

6.9

Okay

739 reviews

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Lufthansa

6.8

Okay

8,228 reviews

KLM

7.8

Good

1,567 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Related info for your journey

How long is the flight from United Kingdom to Idaho?
Departing from United Kingdom to Idaho will take you 18h 49m. The distance between United Kingdom and Idaho is about 4829 mi. This flight may include one or multiple 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 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, March is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of £646). Flying from United Kingdom to Idaho in August is currently the most expensive (average of £1,101). 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

Airlines

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Airlines flying to Idaho

KLM flights to Idaho

Lufthansa flights to Idaho

United Airlines flights to Idaho

Virgin Atlantic flights to Idaho

British Airways flights to Idaho

Top 6 airlines flying from United Kingdom to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£504	Average£760	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£520	Average£848	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£649	Average£1,094	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Virgin Atlantic	Cheapest£657	Average£812	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£697	Average£707	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Alaska Airlines	Cheapest£729	Average£941	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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 £368

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 21/10. 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

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 29 August 2026.

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 29 August 2026.

Best flights from United Kingdom to IdahoDiscover 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 29 August 2026.

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 29 August 2026.

Last-minute flights from United Kingdom to IdahoDiscover last-minute flight deals from United Kingdom to Idaho. Data last updated 29 August 2026 and is based on user searches.

Discover last-minute flight deals from United Kingdom to Idaho. Data last updated 29 August 2026 and is based on user searches.

One-way flights from United Kingdom to IdahoSearch for one-way flight options from United Kingdom to Idaho. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Search for one-way flight options from United Kingdom to Idaho. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Find flight deals from United Kingdom to Idaho

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

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

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 29 August 2026.

See what other customers who have flown with KLM,United Airlines, andVirgin Atlantic 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.

Related info for your journey

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.

Airlines flying to Idaho

Alternative routes for United Kingdom to Idaho

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

Complete your trip

Complete your trip to Idaho by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from United Kingdom to Idaho by cabin class

Find flights from United Kingdom to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.

United Kingdom and Idaho flights

Browse other United Kingdom and Idaho flight options. Last updated on 29 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from Idaho

Find the right flight back to United Kingdom after your stay in Idaho

United Kingdom to Idaho flights

Consider these flights travelling from United Kingdom to Idaho.

Top 6 airlines flying from United Kingdom to Idaho

Fly with Cheapflights

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?

100% Free

Book with Flexibility

Travel Smart

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 29 August 2026.

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 29 August 2026.

Last-minute flights from United Kingdom to Idaho
Discover last-minute flight deals from United Kingdom to Idaho. Data last updated 29 August 2026 and is based on user searches.

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 29 August 2026.