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

Airlines like Scandinavian Airlines, United Airlines, and Air Canada fly from Idaho to London Heathrow Airport in about 11h 57m. The time it takes to get you to your destination can typically vary by up to 11h 43m. There are 4829 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 cheapest airlines to fly from Idaho to London Heathrow Airport one-way?

One-way options have recently been found by users for as low as £288 on American Airlines. Other airlines that offer cheap prices include Delta from £329 and Iberia from £329 one-way.

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 Spokane - London Heathrow. You may also consider Boise Air Term. Gowen Fld - London Heathrow or Jackson Hole - 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.

£245+ Flights from Idaho to London Heathrow Airport

Cheap flight deals from Idaho to Heathrow

Round-trip from	£443
One-way from	£245
Popular in	June
Cheapest in	October
Average price	£583

Scandinavian Airlines
28/10-12/11
4 total stops
46h 54m total
Idaho to London

Search Deals

27/10
3 total stops
43h 40m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£149 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 September 2025

Search Deals

Find flight deals from Idaho to Heathrow

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 18 September 2025.

Tue 28/1016:00BOI - LHR

2 stops23h 40mScandinavian Airlines

Wed 12/1106:40LHR - BOI

2 stops23h 14mScandinavian Airlines

Deal found 17/9£443

Tue 23/917:39BOI - LHR

1 stop11h 41mUnited Airlines

Wed 1/1014:05LHR - BOI

2 stops28h 34mUnited Airlines

Deal found 16/9£445

Mon 20/1014:39BOI - LHR

1 stop14h 41mUnited Airlines

Fri 31/1013:25LHR - BOI

2 stops28h 14mUnited Airlines

Deal found 17/9£446

Tue 23/905:00BOI - LHR

2 stops20h 35mAir Canada

Wed 1/1014:05LHR - BOI

2 stops35h 42mAir Canada

Deal found 16/9£451

Wed 12/1115:54BOI - LHR

2 stops19h 36mScandinavian Airlines

Mon 17/1119:30LHR - BOI

2 stops34h 24mScandinavian Airlines

Deal found 17/9£452

Sun 5/1009:45BOI - LHR

2 stops19h 05mAir Canada

Tue 14/1015:50LHR - BOI

2 stops32h 08mAir Canada

Deal found 17/9£456

Wed 19/1106:20BOI - LHR

2 stops22h 30mAir Canada

Wed 26/1114:30LHR - BOI

2 stops30h 14mAir Canada

Deal found 17/9£456

Wed 5/1113:10GEG - LHR

1 stop12h 50mDelta

Wed 19/1106:20LHR - GEG

2 stops20h 38mDelta

Deal found 17/9£456

Wed 8/1011:41BOI - LHR

1 stop19h 34mDelta

Wed 15/1006:15LHR - BOI

2 stops16h 51mDelta

Deal found 17/9£457

Wed 1/1011:29GEG - LHR

1 stop18h 46mDelta

Tue 7/1009:00LHR - GEG

2 stops20h 05mDelta

Deal found 17/9£457

Wed 1/1014:05BOI - LHR

1 stop17h 10mDelta

Tue 7/1006:30LHR - BOI

2 stops20h 46mDelta

Deal found 16/9£458

Tue 14/1011:20GEG - LHR

1 stop18h 55mDelta

Tue 21/1006:30LHR - GEG

2 stops16h 27mDelta

Deal found 16/9£458

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 18 September 2025.

Tue 28/1016:00BOI - LHR

2 stops23h 40mScandinavian Airlines

Wed 12/1106:40LHR - BOI

2 stops23h 14mScandinavian Airlines

Deal found 17/9£443

Tue 17/214:43BOI - LHR

1 stop11h 57mUnited Airlines

Thu 26/206:35LHR - BOI

2 stops23h 30mUnited Airlines

Deal found 17/9£452

Wed 8/1007:45BOI - LHR

2 stops21h 05mAir Canada

Tue 14/1015:50LHR - BOI

2 stops32h 08mAir Canada

Deal found 17/9£456

Wed 12/1109:13GEG - LHR

1 stop17h 17mDelta

Wed 3/1206:20LHR - GEG

2 stops20h 36mDelta

Deal found 16/9£456

Mon 3/1105:52GEG - LHR

1 stop16h 58mAmerican Airlines

Wed 19/1117:00LHR - GEG

2 stops27h 32mAmerican Airlines

Deal found 17/9£457

Wed 1/1013:00BOI - LHR

1 stop13h 50mKLM

Tue 7/1017:25LHR - BOI

1 stop13h 43mKLM

Deal found 16/9£462

Wed 8/1013:00JAC - LHR

2 stops15h 20mVirgin Atlantic

Wed 15/1011:45LHR - JAC

2 stops16h 44mVirgin Atlantic

Deal found 17/9£466

Fri 31/1015:50IDA - LHR

1 stop14h 30mMultiple Airlines

Fri 7/1114:25LHR - IDA

1 stop15h 09mMultiple Airlines

Deal found 16/9£558

Wed 1/1006:45GEG - LHR

1 stop19h 15mDelta

Wed 8/1011:30LHR - GEG

2 stops17h 35mDelta

Deal found 17/9£457

Wed 12/1114:31BOI - LHR

1 stop12h 09mUnited Airlines

Mon 17/1116:40LHR - BOI

2 stops34h 05mUnited Airlines

Deal found 17/9£459

Wed 5/1105:45GEG - LHR

1 stop17h 20mKLM

Wed 19/1110:45LHR - GEG

1 stop15h 48mKLM

Deal found 16/9£462

Fri 5/1207:00JAC - LHR

2 stops16h 25mVirgin Atlantic

Mon 8/1217:05LHR - JAC

2 stops35h 24mVirgin Atlantic

Deal found 15/9£498

Wed 5/1107:15GEG - LHR

2 stops17h 30mDelta

Wed 19/1106:20LHR - GEG

2 stops20h 38mDelta

Deal found 17/9£460

Wed 1/1013:00GEG - LHR

1 stop12h 50mKLM

Tue 7/1010:55LHR - GEG

1 stop15h 30mKLM

Deal found 16/9£462

Sun 5/1017:39BOI - LHR

1 stop11h 41mUnited Airlines

Thu 16/1011:25LHR - BOI

1 stop13h 23mUnited Airlines

Deal found 17/9£463

Wed 12/1109:50GEG - LHR

1 stop16h 10mKLM

Wed 3/1210:45LHR - GEG

1 stop15h 52mKLM

Deal found 16/9£462

Wed 19/1106:20BOI - LHR

1 stop18h 05mUnited Airlines

Wed 26/1110:05LHR - BOI

1 stop20h 23mUnited Airlines

Deal found 17/9£463

Thu 4/1213:10JAC - LHR

1 stop15h 30mAmerican Airlines

Thu 18/1215:10LHR - JAC

1 stop27h 52mAmerican Airlines

Deal found 18/9£582

Tue 7/1015:00BOI - LHR

1 stop15h 10mKLM

Wed 15/1017:25LHR - BOI

1 stop13h 43mKLM

Deal found 17/9£463

Tue 7/1008:20BOI - LHR

1 stop15h 00mUnited Airlines

Thu 16/1011:05LHR - BOI

1 stop14h 42mUnited Airlines

Deal found 17/9£463

Mon 5/107:05LWS - LHR

1 stop19h 25mDelta

Tue 10/312:20LHR - LWS

1 stop15h 42mDelta

Deal found 16/9£512

Fri 5/1213:04JAC - LHR

1 stop13h 56mAmerican Airlines

Mon 8/1210:05LHR - JAC

1 stop33h 09mAmerican Airlines

Deal found 15/9£599

Mon 6/1017:39BOI - LHR

1 stop11h 41mUnited Airlines

Tue 14/1011:25LHR - BOI

1 stop13h 23mUnited Airlines

Deal found 17/9£463

Wed 1/1015:30GEG - LHR

1 stop14h 45mKLM

Wed 8/1012:45LHR - GEG

1 stop15h 01mKLM

Deal found 17/9£463

Tue 7/1009:45BOI - LHR

1 stop14h 40mUnited Airlines

Fri 17/1016:15LHR - BOI

1 stop14h 29mUnited Airlines

Deal found 17/9£463

Thu 4/1207:00JAC - LHR

2 stops19h 00mDelta

Thu 18/1210:45LHR - JAC

1 stop17h 44mDelta

Deal found 18/9£577

Fri 5/1207:00JAC - LHR

1 stop20h 00mKLM

Mon 8/1220:25LHR - JAC

2 stops27h 40mKLM

Deal found 15/9£494

Mon 5/107:05LWS - LHR

1 stop19h 25mKLM

Tue 10/320:25LHR - LWS

2 stops31h 37mKLM

Deal found 16/9£508

Sun 2/1105:05IDA - LHR

1 stop23h 15mMultiple Airlines

Sat 8/1110:45LHR - IDA

1 stop14h 28mMultiple Airlines

Deal found 18/9£923

Fri 31/1005:00IDA - LHR

2 stops20h 30mUnited Airlines

Fri 7/1113:00LHR - IDA

2 stops35h 46mUnited Airlines

Deal found 16/9£536

Last-minute flights from Idaho to Heathrow
Discover last-minute flight deals from Idaho to Heathrow. Data last updated 18 September 2025 and is based on user searches.

Tue 23/917:39BOI - LHR

1 stop11h 41mUnited Airlines

Wed 1/1014:05LHR - BOI

2 stops28h 34mUnited Airlines

Deal found 16/9£445

Tue 23/905:00BOI - LHR

2 stops20h 35mAir Canada

Wed 1/1014:05LHR - BOI

2 stops35h 42mAir Canada

Deal found 16/9£451

Tue 23/911:00BOI - LHR

2 stops19h 10mDelta

Wed 1/1011:30LHR - BOI

2 stops19h 27mDelta

Deal found 15/9£459

Tue 23/916:20BOI - LHR

1 stop14h 55mKLM

Wed 1/1017:25LHR - BOI

1 stop13h 32mKLM

Deal found 16/9£462

Wed 24/906:00BOI - LHR

1 stop20h 50mDelta

Sun 5/1018:30LHR - BOI

1 stop23h 31mDelta

Deal found 16/9£499

Wed 1/1015:30GEG - LHR

1 stop11h 50mDelta

Tue 7/1009:00LHR - GEG

2 stops20h 05mDelta

Deal found 16/9£456

Wed 1/1013:00GEG - LHR

1 stop12h 50mKLM

Tue 7/1010:55LHR - GEG

1 stop15h 30mKLM

Deal found 16/9£462

Wed 1/1015:30GEG - LHR

1 stop14h 45mKLM

Wed 8/1012:45LHR - GEG

1 stop15h 01mKLM

Deal found 17/9£463

Fri 3/1014:23GEG - LHR

1 stop14h 47mVirgin Atlantic

Tue 14/1017:25LHR - GEG

1 stop13h 36mVirgin Atlantic

Deal found 16/9£491

Fri 3/1019:05GEG - LHR

2 stops16h 55mDelta

Tue 14/1009:55LHR - GEG

2 stops16h 48mDelta

Deal found 16/9£498

Tue 14/1011:20GEG - LHR

1 stop18h 55mDelta

Tue 21/1006:30LHR - GEG

2 stops16h 27mDelta

Deal found 16/9£458

Sat 18/1015:37GEG - LHR

1 stop14h 38mDelta

Thu 30/1006:20LHR - GEG

2 stops23h 14mDelta

Deal found 16/9£493

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 18 September 2025.

Mon 27/1015:50IDA - LHR

3 stops43h 40mMultiple Airlines

Deal found 16/9£245

Sun 26/1012:28BOI - LHR

3 stops42h 12mMultiple Airlines

Deal found 17/9£245

Sun 26/1013:26BOI - LHR

1 stop16h 09mAmerican Airlines

Deal found 18/9£288

Mon 27/1013:11IDA - LHR

1 stop16h 24mAmerican Airlines

Deal found 16/9£329

Mon 3/1113:06JAC - LHR

1 stop15h 34mAmerican Airlines

Deal found 15/9£329

Sun 26/1005:25BOI - LHR

2 stops19h 40mDelta

Deal found 18/9£329

Wed 22/1013:12GEG - LHR

1 stop15h 03mAmerican Airlines

Deal found 16/9£329

Wed 22/1005:05GEG - LHR

2 stops18h 10mUnited Airlines

Deal found 16/9£336

Tue 25/1107:00JAC - LHR

1 stop19h 40mUnited Airlines

Deal found 15/9£339

Tue 30/905:12GEG - LHR

3 stops28h 33mMultiple Airlines

Deal found 16/9£341

Mon 3/1110:45JAC - LHR

1 stop15h 55mUnited Airlines

Deal found 17/9£343

Wed 31/1207:15LWS - LHR

2 stops19h 00mDelta

Deal found 17/9£361

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

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 28/10

16:00-21:40

2 stops23h 40m

London Heathrow

Wed 12/11

06:40-22:54

2 stops23h 14m

£443

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 17/2

14:43-09:40

1 stop11h 57m

London Heathrow

Thu 26/2

06:35-23:05

2 stops23h 30m

£452

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 8/10

07:45-11:50

2 stops21h 05m

London Heathrow

Tue 14/10

15:50-16:58

2 stops32h 08m

£456

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 12/11

09:13-10:30

1 stop17h 17m

London Heathrow

Wed 3/12

06:20-18:56

2 stops20h 36m

£456

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Mon 3/11

05:52-06:50

1 stop16h 58m

London Heathrow

Wed 19/11

17:00-12:32

2 stops27h 32m

£457

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 1/10

06:45-10:00

1 stop19h 15m

London Heathrow

Wed 8/10

11:30-21:05

2 stops17h 35m

£457

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 12/11

14:31-09:40

1 stop12h 09m

London Heathrow

Mon 17/11

16:40-19:45

2 stops34h 05m

£459

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

07:15-08:45

2 stops17h 30m

London Heathrow

Wed 19/11

06:20-18:58

2 stops20h 38m

£460

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 1/10

13:00-09:50

1 stop13h 50m

London Heathrow

Tue 7/10

17:25-00:08

1 stop13h 43m

£462

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

05:45-07:05

1 stop17h 20m

London Heathrow

Wed 19/11

10:45-18:33

1 stop15h 48m

£462

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 56 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, January is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £112). Flying from Idaho to London Heathrow Airport in August is currently the most expensive (average of £164). 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 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.

Related info for your journey

How long is the flight from Idaho to London Heathrow Airport?
Airlines like Scandinavian Airlines, United Airlines, and Air Canada fly from Idaho to London Heathrow Airport in about 11h 57m. The time it takes to get you to your destination can typically vary by up to 11h 43m. There are 4829 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 cheapest airlines to fly from Idaho to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as £288 on American Airlines. Other airlines that offer cheap prices include Delta from £329 and Iberia from £329 one-way.
What are the most popular routes from Idaho to London Heathrow Airport?
The most popular route from Idaho to London Heathrow Airport is Spokane - London Heathrow. You may also consider Boise Air Term. Gowen Fld - London Heathrow or Jackson Hole - 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, January is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £112). Flying from Idaho to London Heathrow Airport in August is currently the most expensive (average of £164). 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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Hounslow

Slough

Gatwick

Northampton

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Winchester

Chichester

Ipswich

Swindon

Dartford

Guildford

Brentford

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Idaho to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£472	Average£901	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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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.

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Cheap flights from Idaho to London Heathrow Airport from £245

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to Heathrow

Keep the following information in mind while searching for Idaho to Heathrow flight deals. Data was last updated 18 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 18 September 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 18 September 2025.

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?

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

Find hourly flight availability from Idaho to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

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 cheapest airlines to fly from Idaho to London Heathrow Airport one-way?

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.

Top airline flying from Idaho to Heathrow

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?

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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 18 September 2025.