How long is the flight from Idaho to London Heathrow Airport?

Airlines like Lufthansa, Virgin Atlantic, and KLM fly from Idaho to London Heathrow Airport in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 4h 13m. There are 4705 mi between Idaho and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Idaho to London Heathrow Airport?

The most popular route from Idaho to London Heathrow Airport is Boise Air Term. Gowen Fld - London Heathrow. You may also consider Spokane - London Heathrow or Idaho Falls Fanning Field - London Heathrow.

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

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

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

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

How can I find direct flights from Idaho to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Idaho to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£219+ Flights from Idaho to London Heathrow Airport

Cheap flight deals from Idaho to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Idaho to Heathrow
Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 December 2025.

Tue 30/1208:20BOI - LHR

1 stop19h 35mDelta

Tue 6/108:40LHR - BOI

2 stops19h 15mDelta

Deal found 30/12£1,265

Tue 30/1208:20BOI - LHR

1 stop14h 35mLufthansa

Tue 6/107:25LHR - BOI

1 stop22h 32mLufthansa

Deal found 30/12£1,275

Tue 30/1214:40BOI - LHR

1 stop12h 00mUnited Airlines

Tue 6/107:25LHR - BOI

1 stop22h 32mUnited Airlines

Deal found 30/12£1,285

Tue 30/1211:36GEG - LHR

2 stops15h 14mMultiple Airlines

Thu 1/113:45LHR - GEG

1 stop15h 46mMultiple Airlines

Deal found 30/12£1,959

Best flights from Idaho to Heathrow
Discover carefully curated flight deals from Idaho to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 December 2025.

Wed 4/307:00GEG - LHR

1 stop16h 25mLufthansa

Wed 11/307:40LHR - GEG

2 stops20h 38mLufthansa

Deal found 30/12£443

Sun 25/115:52JAC - LHR

1 stop17h 58mVirgin Atlantic

Sun 1/206:20LHR - JAC

2 stops17h 04mVirgin Atlantic

Deal found 28/12£453

Mon 26/113:15IDA - LHR

1 stop13h 45mKLM

Sun 8/217:05LHR - IDA

2 stops31h 46mKLM

Deal found 29/12£461

Mon 26/118:35IDA - LHR

2 stops34h 20mDelta

Sun 8/211:45LHR - IDA

2 stops37h 06mDelta

Deal found 29/12£461

Thu 12/207:00GEG - LHR

1 stop16h 55mUnited Airlines

Thu 19/206:35LHR - GEG

2 stops22h 32mUnited Airlines

Deal found 29/12£467

Sun 25/108:15BOI - LHR

1 stop16h 40mAir Canada

Sat 7/213:45LHR - BOI

1 stop17h 03mAir Canada

Deal found 28/12£470

Mon 26/114:07IDA - LHR

1 stop14h 33mMultiple Airlines

Sun 8/216:30LHR - IDA

1 stop28h 07mMultiple Airlines

Deal found 29/12£482

Tue 7/413:43IDA - LHR

2 stops17h 12mAmerican Airlines

Tue 14/412:55LHR - IDA

2 stops17h 44mAmerican Airlines

Deal found 28/12£503

Wed 25/207:00GEG - LHR

1 stop16h 25mLufthansa

Wed 11/311:35LHR - GEG

1 stop16h 43mLufthansa

Deal found 30/12£462

Fri 13/207:00GEG - LHR

1 stop21h 00mUnited Airlines

Fri 20/209:00LHR - GEG

2 stops20h 07mUnited Airlines

Deal found 30/12£467

Wed 11/213:15IDA - LHR

1 stop13h 45mKLM

Wed 18/217:50LHR - IDA

2 stops30h 59mKLM

Deal found 28/12£467

Sun 25/113:40BOI - LHR

1 stop15h 00mVirgin Atlantic

Sat 7/208:40LHR - BOI

2 stops19h 15mVirgin Atlantic

Deal found 28/12£467

Tue 17/205:50BOI - LHR

2 stops18h 15mDelta

Tue 24/206:30LHR - BOI

2 stops20h 45mDelta

Deal found 28/12£471

Wed 25/212:38GEG - LHR

1 stop15h 22mUnited Airlines

Sun 1/313:45LHR - GEG

2 stops39h 22mUnited Airlines

Deal found 28/12£467

Tue 17/213:43BOI - LHR

1 stop14h 57mKLM

Fri 27/206:30LHR - BOI

2 stops18h 52mKLM

Deal found 28/12£467

Sun 1/205:20BOI - LHR

2 stops20h 25mVirgin Atlantic

Sat 28/208:40LHR - BOI

2 stops19h 15mVirgin Atlantic

Deal found 27/12£471

Tue 17/205:50BOI - LHR

2 stops19h 15mDelta

Fri 27/206:30LHR - BOI

2 stops16h 45mDelta

Deal found 29/12£471

Wed 25/212:59BOI - LHR

1 stop14h 01mKLM

Sun 8/306:30LHR - BOI

2 stops18h 12mKLM

Deal found 29/12£467

Fri 20/313:10JAC - LHR

2 stops15h 20mMultiple Airlines

Fri 3/420:05LHR - JAC

2 stops27h 42mMultiple Airlines

Deal found 29/12£566

Tue 17/205:00BOI - LHR

2 stops17h 55mUnited Airlines

Tue 24/211:10LHR - BOI

2 stops19h 13mUnited Airlines

Deal found 29/12£470

Thu 12/205:20BOI - LHR

2 stops20h 25mVirgin Atlantic

Thu 19/208:40LHR - BOI

2 stops19h 15mVirgin Atlantic

Deal found 29/12£471

Sun 1/205:05GEG - LHR

2 stops17h 15mDelta

Tue 10/206:30LHR - GEG

2 stops21h 24mDelta

Deal found 28/12£471

Wed 11/205:00GEG - LHR

2 stops21h 50mUnited Airlines

Mon 23/209:00LHR - GEG

2 stops20h 07mUnited Airlines

Deal found 29/12£470

Fri 30/106:30GEG - LHR

2 stops18h 15mDelta

Sun 8/206:30LHR - GEG

2 stops21h 24mDelta

Deal found 28/12£471

Wed 29/416:55BOI - LHR

1 stop15h 05mVirgin Atlantic

Wed 6/511:45LHR - BOI

2 stops16h 40mVirgin Atlantic

Deal found 28/12£479

Wed 13/506:00IDA - LHR

1 stop17h 50mMultiple Airlines

Wed 27/512:55LHR - IDA

1 stop16h 02mMultiple Airlines

Deal found 28/12£594

Tue 7/413:11IDA - LHR

2 stops18h 04mKLM

Tue 14/410:55LHR - IDA

1 stop14h 22mKLM

Deal found 28/12£503

Thu 12/210:45IDA - LHR

1 stop15h 55mUnited Airlines

Thu 19/207:30LHR - IDA

2 stops33h 18mUnited Airlines

Deal found 29/12£475

Sun 25/107:20JAC - LHR

2 stops20h 10mDelta

Sun 1/206:20LHR - JAC

2 stops17h 04mDelta

Deal found 28/12£476

Sat 31/106:53GEG - LHR

1 stop16h 32mUnited Airlines

Sun 8/211:30LHR - GEG

2 stops31h 14mUnited Airlines

Deal found 28/12£475

Last-minute flights from Idaho to Heathrow
Discover last-minute flight deals from Idaho to Heathrow. Data last updated 30 December 2025 and is based on user searches.

Sun 25/106:53GEG - LHR

1 stop16h 32mLufthansa

Sun 1/206:30LHR - GEG

2 stops20h 46mLufthansa

Deal found 28/12£451

Sun 25/115:52JAC - LHR

1 stop17h 58mVirgin Atlantic

Sun 1/206:20LHR - JAC

2 stops17h 04mVirgin Atlantic

Deal found 28/12£453

Sun 25/113:40BOI - LHR

1 stop15h 00mVirgin Atlantic

Sat 7/208:40LHR - BOI

2 stops19h 15mVirgin Atlantic

Deal found 28/12£467

Sun 25/108:15BOI - LHR

1 stop16h 40mAir Canada

Sat 7/213:45LHR - BOI

1 stop17h 03mAir Canada

Deal found 28/12£470

Mon 26/118:35IDA - LHR

2 stops34h 20mDelta

Sun 8/211:45LHR - IDA

2 stops37h 06mDelta

Deal found 29/12£461

Tue 27/108:15BOI - LHR

1 stop14h 40mLufthansa

Tue 3/207:40LHR - BOI

2 stops17h 27mLufthansa

Deal found 29/12£443

Wed 28/110:15BOI - LHR

1 stop20h 15mUnited Airlines

Fri 6/206:35LHR - BOI

2 stops34h 31mUnited Airlines

Deal found 28/12£467

Fri 30/105:15GEG - LHR

1 stop20h 45mKLM

Mon 9/208:40LHR - GEG

2 stops19h 14mKLM

Deal found 28/12£467

Fri 30/106:30GEG - LHR

2 stops18h 15mDelta

Sun 8/206:30LHR - GEG

2 stops21h 24mDelta

Deal found 28/12£471

Fri 30/106:53GEG - LHR

1 stop21h 07mUnited Airlines

Fri 6/213:25LHR - GEG

2 stops30h 14mUnited Airlines

Deal found 28/12£473

Sat 31/106:53GEG - LHR

1 stop16h 32mLufthansa

Mon 9/206:35LHR - GEG

2 stops20h 41mLufthansa

Deal found 28/12£443

Sat 31/106:53GEG - LHR

1 stop16h 32mUnited Airlines

Mon 9/207:40LHR - GEG

2 stops19h 36mUnited Airlines

Deal found 28/12£467

One-way flights from Idaho to Heathrow
Search for one-way flight options from Idaho to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 December 2025.

Mon 26/110:48GEG - LHR

2 stops42h 02mMultiple Airlines

Deal found 28/12£219

Mon 26/106:53GEG - LHR

1 stop16h 32mLufthansa

Deal found 28/12£283

Wed 1/406:15BOI - LHR

2 stops22h 20mUnited Airlines

Deal found 29/12£296

Mon 26/112:24GEG - LHR

1 stop15h 36mUnited Airlines

Deal found 28/12£296

Fri 6/317:30IDA - LHR

2 stops30h 10mUnited Airlines

Deal found 28/12£300

Fri 13/313:11IDA - LHR

2 stops15h 19mKLM

Deal found 29/12£310

Sun 22/207:20JAC - LHR

2 stops20h 10mDelta

Deal found 29/12£314

Thu 23/419:14BOI - LHR

3 stops57h 51mMultiple Airlines

Deal found 29/12£317

Sun 22/214:40JAC - LHR

1 stop12h 00mLufthansa

Deal found 29/12£332

Mon 18/520:27BOI - LHR

3 stops32h 38mMultiple Airlines

Deal found 28/12£336

Wed 1/405:00GEG - LHR

3 stops28h 45mMultiple Airlines

Deal found 29/12£337

Thu 23/408:00BOI - LHR

2 stops16h 10mDelta

Deal found 29/12£347

Find flight deals from Idaho to Heathrow

Round-trip from	£443
One-way from	£219
Popular in	June
Cheapest in	October
Average price	£703

Lufthansa
27/1-3/2
3 total stops
32h 07m total
Idaho to London

Search Deals

26/1
2 total stops
42h 02m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£153 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return 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 Idaho to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 4/3

07:00-07:25

1 stop16h 25m

London Heathrow

Wed 11/3

07:40-21:18

2 stops20h 38m

£443

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sun 25/1

15:52-16:50

1 stop17h 58m

London Heathrow

Sun 1/2

06:20-16:24

2 stops17h 04m

£453

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 26/1

13:15-10:00

1 stop13h 45m

London Heathrow

Sun 8/2

17:05-17:51

2 stops31h 46m

£461

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 26/1

18:35-11:55

2 stops34h 20m

London Heathrow

Sun 8/2

11:45-17:51

2 stops37h 06m

£461

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 25/2

07:00-07:25

1 stop16h 25m

London Heathrow

Wed 11/3

11:35-21:18

1 stop16h 43m

£462

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Thu 12/2

07:00-07:55

1 stop16h 55m

London Heathrow

Thu 19/2

06:35-21:07

2 stops22h 32m

£467

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Fri 13/2

07:00-12:00

1 stop21h 00m

London Heathrow

Fri 20/2

09:00-21:07

2 stops20h 07m

£467

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 25/2

12:38-12:00

1 stop15h 22m

London Heathrow

Sun 1/3

13:45-21:07

2 stops39h 22m

£467

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 11/2

13:15-10:00

1 stop13h 45m

London Heathrow

Wed 18/2

17:50-17:49

2 stops30h 59m

£467

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 25/1

13:40-11:40

1 stop15h 00m

London Heathrow

Sat 7/2

08:40-20:55

2 stops19h 15m

£467

Flights are sorted by cheapest return flights first.

Deals found on 28/12

Showing 1-10 of 60 results

...

Best time to book a flight from Idaho to Heathrow

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

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

Currently, July is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £447). Flying from Idaho to London Heathrow Airport in June is currently the most expensive (average of £804). 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 Idaho to London Heathrow Airport?
Airlines like Lufthansa, Virgin Atlantic, and KLM fly from Idaho to London Heathrow Airport in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 4h 13m. There are 4705 mi between Idaho and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Idaho to London Heathrow Airport?
The most popular route from Idaho to London Heathrow Airport is Boise Air Term. Gowen Fld - London Heathrow. You may also consider Spokane - London Heathrow or Idaho Falls Fanning Field - London Heathrow.
Can I find deals for flights from Idaho to Heathrow that include hotel bookings?
Yes. In addition to deals on Idaho to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Idaho to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Heathrow.
Can I find deals for business class flights from Idaho to Heathrow?
Yes. Cheapflights offers flight deals from Idaho to Heathrow 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 Idaho to London Heathrow Airport?
Currently, July is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £447). Flying from Idaho to London Heathrow Airport in June is currently the most expensive (average of £804). 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

Milton Keynes

Croydon

Luton

Slough

Northampton

Hounslow

Gatwick

Ilford

Wembley

Hayes

Brentford

Colchester

Watford

Crawley

Swindon

Bedford

Chelmsford

Romford

Eastbourne

Ipswich

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Idaho to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to Heathrow from Idaho 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 Idaho to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Idaho? 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 Idaho to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Idaho to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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 Idaho to London Heathrow Airport from £219

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to Heathrow

Cheapest flights from Idaho to HeathrowExplore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 December 2025.

Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 December 2025.

Find flight deals from Idaho to Heathrow

Keep the following information in mind while searching for Idaho to Heathrow flight deals. Data was last updated 30 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 Idaho to London Heathrow Airport that are best for you.

Best time to book a flight from Idaho to Heathrow

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

Cheapflights Insights

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

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

Related info for your journey

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

What are the most popular routes from Idaho to London Heathrow Airport?

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

How can I find direct flights from Idaho to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

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 Idaho to Heathrow

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

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 Idaho to Heathrow?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Idaho to Heathrow
Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 December 2025.