How long is the flight from London to Idaho?

Airlines like United Airlines, Virgin Atlantic, and American Airlines fly from London to Idaho in about 15h 09m. The time it takes to get you to your destination can typically vary by up to 7h 11m. The distance from London to Idaho is about 4705 mi. Both multi-stop and direct flights can be found to your destination and back.

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 are the most popular routes from London to Idaho?

While some choose either London Gatwick - Boise Air Term. Gowen Fld or London Heathrow - Jackson Hole, London Heathrow - Boise Air Term. Gowen Fld is the most popular route from London to Idaho.

What are the most popular airlines that fly from London to Idaho?

Consider Finnair, British Airways or KLM when booking your flight. These represent the most popular airlines when flying from London to Idaho.

How far in advance should I book a flight from London to Idaho?

Find a great deal and save up to 25% by booking at least 21 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Idaho within the next two weeks, with the cheapest ticket starting at £623.

What is the cheapest month to fly from London to Idaho?

The best pricing can be found in the month of February. Prices to Idaho from London average £700. You can even find prices in February for less than £700, as users have found deals to Idaho from as low as £537. The month of July appears to be one of the more expensive times to travel to Idaho from London. Flying in the targeted month can save you up to 32%.

Can I find deals for flights from London to Idaho that include hotel bookings?

Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Idaho?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.

Can I find deals for business class flights from London to Idaho?

Yes. Cheapflights offers flight deals from London 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.

£299+ Cheap Flights from London to Idaho

Cheap flight deals from London to Idaho

Round-trip from	£496
One-way from	£299
Popular in	July
Cheapest in	February
Average price	£871

10/10-17/10
2 total stops
54h 12m total
London to Idaho

Search Deals

19/9
2 total stops
33h 26m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£94 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from London to Idaho

Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.

Fri 10/1010:55LGW - GEG

1 stop34h 17mMultiple Airlines

Fri 17/1007:00GEG - LGW

1 stop19h 55mMultiple Airlines

Deal found 26/8£496

Tue 23/908:45LHR - GEG

2 stops22h 20mUnited Airlines

Tue 30/916:00GEG - LHR

1 stop12h 20mUnited Airlines

Deal found 24/8£509

Sat 6/907:25LHR - GEG

2 stops21h 38mUnited Airlines

Thu 25/913:38GEG - LHR

1 stop14h 42mUnited Airlines

Deal found 25/8£511

Thu 9/1008:30LHR - GEG

2 stops19h 54mUnited Airlines

Thu 16/1012:35GEG - LHR

1 stop17h 35mUnited Airlines

Deal found 25/8£514

Tue 23/912:25LHR - GEG

1 stop19h 33mVirgin Atlantic

Tue 30/915:30GEG - LHR

1 stop11h 50mVirgin Atlantic

Deal found 24/8£521

Sat 6/914:50LHR - GEG

1 stop14h 13mLufthansa

Thu 25/907:15GEG - LHR

1 stop19h 10mLufthansa

Deal found 25/8£530

Tue 23/915:40LGW - GEG

2 stops16h 39mMultiple Airlines

Tue 30/913:40GEG - LGW

2 stops17h 00mMultiple Airlines

Deal found 24/8£531

Mon 1/916:15LHR - GEG

1 stop14h 50mUnited Airlines

Sun 14/905:15GEG - LHR

1 stop20h 25mUnited Airlines

Deal found 25/8£537

Tue 23/908:45LCY - GEG

3 stops22h 20mMultiple Airlines

Tue 30/905:05GEG - LCY

2 stops27h 20mMultiple Airlines

Deal found 24/8£538

Mon 1/911:45LHR - GEG

2 stops20h 03mDelta

Sun 14/919:05GEG - LHR

2 stops16h 55mDelta

Deal found 25/8£540

Mon 8/1207:40LHR - BOI

2 stops33h 19mUnited Airlines

Tue 16/1210:35BOI - LHR

1 stop13h 50mUnited Airlines

Deal found 26/8£551

Mon 22/908:30LHR - BOI

2 stops21h 11mUnited Airlines

Mon 29/912:35BOI - LHR

1 stop16h 10mUnited Airlines

Deal found 25/8£556

Best flights from London to Idaho
Discover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2025.

Fri 10/1010:55LGW - GEG

1 stop34h 17mMultiple Airlines

Fri 17/1007:00GEG - LGW

1 stop19h 55mMultiple Airlines

Deal found 26/8£496

Tue 23/908:45LHR - GEG

2 stops22h 20mUnited Airlines

Tue 30/916:00GEG - LHR

1 stop12h 20mUnited Airlines

Deal found 24/8£509

Tue 23/912:25LHR - GEG

1 stop19h 33mVirgin Atlantic

Tue 30/915:30GEG - LHR

1 stop11h 50mVirgin Atlantic

Deal found 24/8£521

Sat 6/914:50LHR - GEG

1 stop14h 13mLufthansa

Thu 25/907:15GEG - LHR

1 stop19h 10mLufthansa

Deal found 25/8£530

Sat 22/1114:25LHR - IDA

1 stop15h 09mAmerican Airlines

Tue 25/1107:15IDA - LHR

2 stops21h 20mAmerican Airlines

Deal found 25/8£640

Sat 22/1106:20LHR - IDA

2 stops23h 13mDelta

Tue 25/1106:00IDA - LHR

2 stops18h 05mDelta

Deal found 24/8£650

Sun 12/1015:40LGW - BOI

2 stops38h 25mIcelandair

Sat 7/309:50BOI - LGW

2 stops18h 05mIcelandair

Deal found 26/8£700

Sun 12/1013:20LCY - BOI

2 stops40h 04mIberia

Sat 7/307:39BOI - LCY

2 stops42h 11mIberia

Deal found 26/8£909

Sat 6/907:25LHR - GEG

2 stops21h 38mUnited Airlines

Thu 25/907:15GEG - LHR

2 stops19h 55mUnited Airlines

Deal found 25/8£511

Tue 23/915:40LGW - GEG

2 stops16h 39mMultiple Airlines

Tue 30/913:40GEG - LGW

2 stops17h 00mMultiple Airlines

Deal found 24/8£531

Thu 9/1008:30LHR - GEG

2 stops19h 54mUnited Airlines

Thu 16/1005:05GEG - LHR

2 stops19h 15mUnited Airlines

Deal found 25/8£514

Mon 22/914:10LHR - BOI

1 stop15h 31mLufthansa

Mon 29/910:45BOI - LHR

1 stop15h 55mLufthansa

Deal found 25/8£571

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 26 August 2025 and is based on user searches.

Mon 1/916:15LHR - GEG

1 stop14h 50mUnited Airlines

Sun 14/905:15GEG - LHR

1 stop20h 25mUnited Airlines

Deal found 25/8£537

Mon 1/911:45LHR - GEG

2 stops20h 03mDelta

Sun 14/919:05GEG - LHR

2 stops16h 55mDelta

Deal found 25/8£540

Mon 1/920:55LHR - BOI

2 stops31h 47mVirgin Atlantic

Mon 15/913:00BOI - LHR

2 stops15h 20mVirgin Atlantic

Deal found 25/8£586

Sat 6/907:25LHR - GEG

2 stops21h 38mUnited Airlines

Thu 25/913:38GEG - LHR

1 stop14h 42mUnited Airlines

Deal found 25/8£511

Sat 6/914:50LHR - GEG

1 stop14h 13mLufthansa

Thu 25/907:15GEG - LHR

1 stop19h 10mLufthansa

Deal found 25/8£530

Sat 6/912:10LCY - GEG

2 stops19h 38mVirgin Atlantic

Thu 25/915:30GEG - LCY

2 stops17h 10mVirgin Atlantic

Deal found 25/8£574

Mon 22/908:45LCY - BOI

2 stops21h 49mMultiple Airlines

Mon 29/909:45BOI - LCY

2 stops19h 45mMultiple Airlines

Deal found 25/8£576

Tue 23/908:45LHR - GEG

2 stops22h 20mUnited Airlines

Tue 30/916:00GEG - LHR

1 stop12h 20mUnited Airlines

Deal found 24/8£509

Tue 23/912:25LHR - GEG

1 stop19h 33mVirgin Atlantic

Tue 30/915:30GEG - LHR

1 stop11h 50mVirgin Atlantic

Deal found 24/8£521

Tue 23/915:40LGW - GEG

2 stops16h 39mMultiple Airlines

Tue 30/913:40GEG - LGW

2 stops17h 00mMultiple Airlines

Deal found 24/8£531

Tue 23/908:45LCY - GEG

3 stops22h 20mMultiple Airlines

Tue 30/905:05GEG - LCY

2 stops27h 20mMultiple Airlines

Deal found 24/8£538

Fri 26/911:25LHR - BOI

1 stop18h 05mUnited Airlines

Mon 6/1014:39BOI - LHR

1 stop12h 01mUnited Airlines

Deal found 25/8£595

One-way flights from London to Idaho
Search for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated 26 August 2025.

Fri 19/910:55LGW - BOI

2 stops33h 26mMultiple Airlines

Deal found 24/8£299

Mon 6/1008:50LGW - BOI

3 stops45h 25mMultiple Airlines

Deal found 25/8£316

Sat 20/909:50LGW - BOI

2 stops21h 09mMultiple Airlines

Deal found 24/8£331

Fri 19/906:00LHR - BOI

3 stops38h 21mMultiple Airlines

Deal found 24/8£345

Fri 3/1006:00LHR - BOI

3 stops38h 21mMultiple Airlines

Deal found 24/8£349

Tue 9/919:00LHR - BOI

3 stops49h 21mMultiple Airlines

Deal found 24/8£373

Tue 7/1015:05LHR - BOI

3 stops53h 25mMultiple Airlines

Deal found 25/8£375

Thu 2/1006:00LHR - BOI

3 stops45h 31mMultiple Airlines

Deal found 24/8£414

Fri 3/1006:00LHR - IDA

3 stops47h 38mMultiple Airlines

Deal found 24/8£423

Sun 5/1021:25LHR - BOI

3 stops56h 50mMultiple Airlines

Deal found 24/8£432

Mon 6/1019:50LHR - BOI

2 stops34h 06mMultiple Airlines

Deal found 25/8£460

Sat 4/1012:00LHR - IDA

3 stops55h 49mMultiple Airlines

Deal found 24/8£517

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Fri 10/10

10:55-13:12

1 stop34h 17m

Spokane

Fri 17/10

07:00-10:55

1 stop19h 55m

£496

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 23/9

08:45-23:05

2 stops22h 20m

Spokane

Tue 30/9

16:00-12:20

1 stop12h 20m

£509

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 6/9

07:25-21:03

2 stops21h 38m

Spokane

Thu 25/9

07:15-11:10

2 stops19h 55m

£511

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 9/10

08:30-20:24

2 stops19h 54m

Spokane

Thu 16/10

05:05-08:20

2 stops19h 15m

£514

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 23/9

12:25-23:58

1 stop19h 33m

Spokane

Tue 30/9

15:30-11:20

1 stop11h 50m

£521

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 6/9

14:50-21:03

1 stop14h 13m

Spokane

Thu 25/9

07:15-10:25

1 stop19h 10m

£530

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 23/9

15:40-00:19

2 stops16h 39m

Spokane

Tue 30/9

13:40-14:40

2 stops17h 00m

£531

LondonSpokane

LCY - GEG

LCYGEG

London City

Tue 23/9

08:45-23:05

3 stops22h 20m

Spokane

Tue 30/9

05:05-16:25

2 stops27h 20m

£538

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 8/10

08:40-23:44

2 stops22h 04m

Boise Air Term. Gowen Fld

Wed 15/10

10:35-09:40

1 stop16h 05m

£551

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Tue 16/12

09:40-09:10

2 stops16h 30m

£551

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 60 results

...

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from London 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 London to Idaho

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

Currently, October is the cheapest month in which you can book a flight from London to Idaho (average of £754). Flying from London 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 LON to ID?

When flying from London 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 a feel of what it's like to fly with KLM, United Airlines, andVirgin Atlantic from London to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,387 reviews

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

United Airlines

7.4

Good

8,943 reviews

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Virgin Atlantic

7.4

Good

658 reviews

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Lufthansa

6.8

Okay

7,359 reviews

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

British Airways

6.7

Okay

7,309 reviews

KLM

7.8

Good

1,387 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

How long is the flight from London to Idaho?
Airlines like United Airlines, Virgin Atlantic, and American Airlines fly from London to Idaho in about 15h 09m. The time it takes to get you to your destination can typically vary by up to 7h 11m. The distance from London to Idaho is about 4705 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from London to Idaho?
While some choose either London Gatwick - Boise Air Term. Gowen Fld or London Heathrow - Jackson Hole, London Heathrow - Boise Air Term. Gowen Fld is the most popular route from London to Idaho.
Can I find deals for flights from London to Idaho that include hotel bookings?
Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.
Can I find deals for business class flights from London to Idaho?
Yes. Cheapflights offers flight deals from London 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 London to Idaho?
Currently, October is the cheapest month in which you can book a flight from London to Idaho (average of £754). Flying from London 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 London to Idaho

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Stansted to Miami flights

Direct flights to United States

Top 6 airlines flying from London to Idaho

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest£528	Average£626	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£535	Average£644	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£537	Average£588	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£537	Average£833	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Virgin Atlantic	Cheapest£597	Average£817	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£666	Average£831	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Idaho?

Deals for London 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 London to Idaho?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Idaho for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Idaho with no change fees?

Yes, we can. To see specific flights from London to Idaho with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

Of course! You can now track prices for flights from London to Idaho and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London to Idaho from £299

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Idaho

Keep the following information in mind while searching for London to Idaho flight deals. Data was last updated 26 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Idaho

Cheapest flights from London to IdahoExplore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.

Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Idaho that are best for you.

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Idaho

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

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

Find hourly flight availability from London 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 26 August 2025.

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 26 August 2025.

Get a feel of what it's like to fly with KLM, United Airlines, andVirgin Atlantic from London to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London 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 London to Idaho?

What are the most popular routes from London to Idaho?

Can I find deals for flights from London to Idaho that include hotel bookings?

How can I find direct flights from London to Idaho?

Can I find deals for business class flights from London to Idaho?

What is the cheapest month to book a flight from London 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 London to Idaho

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

Top 6 airlines flying from London 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 London to Idaho?

Why should you use Cheapflights to find cheap flight tickets from London to Idaho?

Can Cheapflights find flights from London to Idaho with no change fees?

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

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Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.