How long is the flight from London to Idaho?

Airlines like United Airlines, Virgin Atlantic, and Icelandair fly from London to Idaho in about 16h 42m. The time it takes to get you to your destination can typically vary by up to 3h 59m. The distance from London to Idaho is about 4667 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 Heathrow - Idaho Falls Fanning Field or London Gatwick - Boise Air Term. Gowen Fld, 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 United Airlines, Virgin Atlantic or Lufthansa when booking your flight. These represent the most popular airlines when flying from London to Idaho.

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.

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.

£305+ Flights from London to Idaho

Q: How much does it cost for a return flight from London to Idaho?

Airfare is below average for this route at the moment. London to Idaho flights typically cost between £571 and £805 in January. The cheapest return flight price found within the last 3 days was £554 on United Airlines (26 Jan-2 Feb).

Cheap flight deals from London to Idaho

Enter your travel dates to find the best prices.

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 31 December 2025.

Thu 5/206:35LHR - GEG

2 stops20h 41mUnited Airlines

Sun 8/211:25GEG - LHR

1 stop34h 30mUnited Airlines

Deal found 30/12£524

Sat 21/213:45LHR - GEG

1 stop15h 22mLufthansa

Sat 7/307:02GEG - LHR

1 stop16h 23mLufthansa

Deal found 30/12£533

Tue 13/110:45LHR - IDA

2 stops18h 34mVirgin Atlantic

Tue 20/113:15IDA - LHR

2 stops15h 40mVirgin Atlantic

Deal found 29/12£614

Tue 10/311:55LGW - GEG

2 stops16h 42mIcelandair

Tue 17/312:00GEG - LGW

2 stops15h 55mIcelandair

Deal found 30/12£617

Mon 26/116:30LHR - IDA

1 stop28h 07mMultiple Airlines

Mon 2/214:07IDA - LHR

1 stop14h 33mMultiple Airlines

Deal found 29/12£641

Sat 10/116:30LHR - SUN

2 stops34h 47mFinnair

Sat 17/112:16SUN - LHR

2 stops59h 04mFinnair

Deal found 30/12£682

Sat 10/110:10LHR - SUN

2 stops18h 45mDelta

Sat 17/107:25SUN - LHR

2 stops18h 35mDelta

Deal found 29/12£702

Sat 21/221:05LGW - GEG

2 stops32h 08mIberia

Sat 7/305:51GEG - LGW

2 stops29h 04mIberia

Deal found 30/12£897

Sat 21/208:40LCY - GEG

2 stops19h 17mKLM

Sat 7/309:25GEG - LCY

2 stops19h 50mKLM

Deal found 30/12£953

Tue 10/306:35LHR - GEG

2 stops21h 28mUnited Airlines

Tue 17/305:00GEG - LHR

1 stop21h 40mUnited Airlines

Deal found 29/12£525

Mon 4/507:25LHR - GEG

2 stops22h 10mUnited Airlines

Sun 10/506:00GEG - LHR

1 stop24h 10mUnited Airlines

Deal found 29/12£537

Mon 26/120:25LHR - IDA

2 stops33h 32mVirgin Atlantic

Mon 2/213:15IDA - LHR

1 stop13h 45mVirgin Atlantic

Deal found 29/12£629

Wed 3/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Fri 31/708:21BOI - LGW

1 stop19h 34mMultiple Airlines

Deal found 29/12£642

Mon 20/415:40LGW - BOI

2 stops38h 17mIcelandair

Mon 27/416:38BOI - LGW

2 stops39h 02mIcelandair

Deal found 30/12£654

Mon 26/109:00LHR - BOI

2 stops19h 23mUnited Airlines

Mon 2/214:37BOI - LHR

1 stop12h 03mUnited Airlines

Deal found 29/12£554

Fri 5/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Mon 27/708:21BOI - LGW

1 stop19h 34mMultiple Airlines

Deal found 29/12£656

Thu 22/110:45LHR - IDA

1 stop14h 06mVirgin Atlantic

Sat 31/105:25IDA - LHR

1 stop21h 35mVirgin Atlantic

Deal found 29/12£673

Mon 2/307:40LHR - BOI

2 stops33h 32mUnited Airlines

Mon 16/312:59BOI - LHR

1 stop36h 26mUnited Airlines

Deal found 30/12£557

Tue 17/320:00LHR - JAC

2 stops29h 02mDelta

Tue 24/307:20JAC - LHR

2 stops19h 25mDelta

Deal found 29/12£766

Mon 4/515:40LGW - GEG

2 stops37h 51mIcelandair

Sun 10/519:40GEG - LGW

2 stops35h 00mIcelandair

Deal found 30/12£720

Wed 3/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Mon 27/708:21BOI - LGW

1 stop19h 34mMultiple Airlines

Deal found 29/12£656

Thu 12/210:45LHR - IDA

1 stop14h 04mVirgin Atlantic

Fri 27/205:25IDA - LHR

1 stop21h 35mVirgin Atlantic

Deal found 29/12£673

Mon 20/406:55LHR - BOI

2 stops22h 40mUnited Airlines

Mon 27/409:26BOI - LHR

1 stop18h 44mUnited Airlines

Deal found 30/12£569

Thu 4/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Wed 15/708:21BOI - LGW

1 stop19h 34mMultiple Airlines

Deal found 29/12£664

Fri 27/206:30LHR - BOI

2 stops21h 25mUnited Airlines

Mon 9/314:40BOI - LHR

1 stop13h 00mUnited Airlines

Deal found 31/12£579

Fri 5/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Wed 15/708:21BOI - LGW

1 stop19h 34mMultiple Airlines

Deal found 29/12£676

Sun 29/315:40LGW - GEG

2 stops16h 19mIcelandair

Wed 8/411:40GEG - LGW

2 stops19h 00mIcelandair

Deal found 31/12£836

Tue 17/320:00LHR - JAC

2 stops22h 35mVirgin Atlantic

Tue 24/313:10JAC - LHR

1 stop14h 50mVirgin Atlantic

Deal found 29/12£765

Fri 20/206:30LHR - BOI

2 stops21h 25mUnited Airlines

Mon 2/306:25BOI - LHR

1 stop20h 15mUnited Airlines

Deal found 29/12£580

Wed 3/610:55LGW - BOI

1 stop30h 25mMultiple Airlines

Thu 16/706:20BOI - LGW

2 stops21h 35mMultiple Airlines

Deal found 29/12£690

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 31 December 2025 and is based on user searches.

Sat 10/116:30LHR - SUN

2 stops34h 47mFinnair

Sat 17/112:16SUN - LHR

2 stops59h 04mFinnair

Deal found 30/12£682

Mon 12/111:05LHR - BOI

1 stop16h 50mVirgin Atlantic

Mon 26/113:47BOI - LHR

1 stop14h 53mVirgin Atlantic

Deal found 30/12£620

Mon 12/110:25LHR - BOI

2 stops18h 27mUnited Airlines

Mon 26/112:19BOI - LHR

2 stops15h 31mUnited Airlines

Deal found 30/12£625

Mon 12/113:25LHR - BOI

2 stops27h 41mAir Canada

Mon 26/106:10BOI - LHR

2 stops19h 20mAir Canada

Deal found 30/12£632

Tue 13/110:45LHR - IDA

1 stop18h 34mVirgin Atlantic

Tue 20/105:25IDA - LHR

1 stop21h 35mVirgin Atlantic

Deal found 29/12£614

Thu 22/106:30LHR - IDA

2 stops18h 48mMultiple Airlines

Sat 31/109:00IDA - LHR

1 stop18h 30mMultiple Airlines

Deal found 29/12£640

Thu 22/110:45LHR - IDA

1 stop14h 06mVirgin Atlantic

Sat 31/105:25IDA - LHR

1 stop21h 35mVirgin Atlantic

Deal found 29/12£673

Mon 26/109:00LHR - BOI

2 stops19h 23mUnited Airlines

Mon 2/210:48BOI - LHR

2 stops17h 27mUnited Airlines

Deal found 29/12£554

Mon 26/111:45LHR - IDA

2 stops37h 06mVirgin Atlantic

Mon 2/213:15IDA - LHR

2 stops15h 40mVirgin Atlantic

Deal found 29/12£629

Mon 26/116:30LHR - IDA

1 stop28h 07mMultiple Airlines

Mon 2/214:07IDA - LHR

1 stop14h 33mMultiple Airlines

Deal found 29/12£641

Mon 26/116:30LHR - IDA

1 stop28h 07mAmerican Airlines

Mon 2/214:07IDA - LHR

1 stop14h 33mAmerican Airlines

Deal found 29/12£654

Mon 26/111:55LGW - IDA

2 stops18h 04mMultiple Airlines

Mon 2/218:58IDA - LGW

2 stops32h 57mMultiple Airlines

Deal found 29/12£691

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 31 December 2025.

Mon 27/414:00LGW - BOI

2 stops32h 33mMultiple Airlines

Deal found 29/12£305

Thu 4/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Deal found 30/12£344

Wed 3/610:55LGW - BOI

2 stops20h 03mMultiple Airlines

Deal found 30/12£356

Sat 21/214:50LHR - GEG

2 stops40h 11mMultiple Airlines

Deal found 30/12£368

Mon 1/610:55LGW - BOI

1 stop19h 03mMultiple Airlines

Deal found 28/12£391

Fri 29/513:05LGW - BOI

2 stops32h 05mMultiple Airlines

Deal found 30/12£395

Thu 28/506:40LHR - BOI

3 stops23h 18mMultiple Airlines

Deal found 28/12£414

Mon 27/414:10LHR - BOI

3 stops34h 06mMultiple Airlines

Deal found 29/12£425

Thu 4/621:05LHR - BOI

3 stops32h 19mMultiple Airlines

Deal found 28/12£456

Sun 31/506:40LHR - BOI

3 stops35h 22mMultiple Airlines

Deal found 30/12£459

Tue 2/606:00LHR - BOI

3 stops24h 58mMultiple Airlines

Deal found 30/12£463

Mon 1/606:00LHR - BOI

3 stops24h 58mMultiple Airlines

Deal found 30/12£471

Find flight deals from London to Idaho

Round-trip from	£511
One-way from	£305
Popular in	December
Cheapest in	September
Average price	£1,104

Finnair
10/3-17/3
3 total stops
47h 43m total
London to Idaho

Search Deals

27/4
2 total stops
32h 33m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£54 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 5/2

06:35-19:16

2 stops20h 41m

Spokane

Sun 8/2

11:25-05:55

1 stop34h 30m

£524

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

06:35-21:03

2 stops21h 28m

Spokane

Tue 17/3

05:00-09:40

1 stop21h 40m

£525

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 21/2

13:45-21:07

1 stop15h 22m

Spokane

Sat 7/3

07:02-07:25

1 stop16h 23m

£533

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 4/5

07:25-21:35

2 stops22h 10m

Spokane

Sun 10/5

06:00-14:10

1 stop24h 10m

£537

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 26/1

09:00-21:23

2 stops19h 23m

Boise Air Term. Gowen Fld

Mon 2/2

14:37-09:40

1 stop12h 03m

£554

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 2/3

07:40-10:12

2 stops33h 32m

Boise Air Term. Gowen Fld

Mon 16/3

12:59-07:25

1 stop36h 26m

£557

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 20/4

06:55-22:35

2 stops22h 40m

Boise Air Term. Gowen Fld

Mon 27/4

09:26-11:10

1 stop18h 44m

£569

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 27/2

06:30-20:55

2 stops21h 25m

Boise Air Term. Gowen Fld

Mon 9/3

14:40-09:40

1 stop13h 00m

£579

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 20/2

06:30-20:55

2 stops21h 25m

Boise Air Term. Gowen Fld

Mon 2/3

06:25-09:40

1 stop20h 15m

£580

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 13/1

10:45-22:19

2 stops18h 34m

Idaho Falls Fanning Field

Tue 20/1

13:15-11:55

2 stops15h 40m

£614

Flights are sorted by cheapest return flights first.

Deals found on 30/12

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, March is the cheapest month in which you can book a flight from London to Idaho (average of £508). Flying from London to Idaho in February is currently the most expensive (average of £708). 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.

How much does it cost for a return flight from London to Idaho?

Reviews of airlines servicing Idaho

Get a feel of what it's like to fly with KLM, Virgin Atlantic, andUnited Airlines 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

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

KLM

7.7

Good

1,435 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Virgin Atlantic

7.5

Good

677 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

United Airlines

7.4

Good

9,126 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Iberia

7.0

Good

3,058 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Lufthansa

6.8

Okay

7,666 reviews

KLM

7.7

Good

1,435 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

How long is the flight from London to Idaho?
Airlines like United Airlines, Virgin Atlantic, and Icelandair fly from London to Idaho in about 16h 42m. The time it takes to get you to your destination can typically vary by up to 3h 59m. The distance from London to Idaho is about 4667 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 Heathrow - Idaho Falls Fanning Field or London Gatwick - Boise Air Term. Gowen Fld, 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, March is the cheapest month in which you can book a flight from London to Idaho (average of £508). Flying from London to Idaho in February is currently the most expensive (average of £708). 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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Direct flights to United States

Top 3 airlines flying from London to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£533	Average£654	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£535	Average£829	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Virgin Atlantic	Cheapest£596	Average£830	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic 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 £305

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Idaho

Best flights from London to IdahoDiscover 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 31 December 2025.

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 31 December 2025.

Find flight deals from London to Idaho

Keep the following information in mind while searching for London to Idaho flight deals. Data was last updated 31 December 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 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?

How much does it cost for a return flight from London to Idaho?

Reviews of airlines servicing Idaho

Get a feel of what it's like to fly with KLM, Virgin Atlantic, andUnited Airlines 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 3 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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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 31 December 2025.