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

For as low as £457, American Airlines can have you in Idaho from London Heathrow Airport in 30h 38m. Airlines will cover a distance of 4643 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 Heathrow Airport to Idaho?

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

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

When booking a flight from London Heathrow Airport to Idaho, you may want to consider flying on Finnair, British Airways or KLM as they are the most popular for this route.

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

Travelers have found it’s best to book a flight 21 days in advance to save up to 25% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 21 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Idaho 1-2 weeks in advance for as low as £625, or £1,032 for flights within the next 24 hours.

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

The best pricing can be found in the month of February. Prices to Idaho from London Heathrow Airport average £702. You can even find prices in February for less than £702, as users have found deals to Idaho from as low as £540. The month of July appears to be one of the more expensive times to travel to Idaho from London Heathrow Airport. Flying in the targeted month can save you up to 32%.

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

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

How can I find direct flights from Heathrow to Idaho?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£348+ Flights from London Heathrow Airport to Idaho

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

Airfare is below average for this route at the moment. London Heathrow Airport to Idaho flights typically cost between £564 and £656 in November. The cheapest return flight price found within the last 3 days was £540 on United Airlines (21 Nov-30 Nov).

Cheap flight deals from Heathrow to Idaho

Round-trip from	£457
One-way from	£348
Popular in	July
Cheapest in	February
Average price	£645

American Airlines
2/2-10/2
4 total stops
38h 40m total
London to Idaho

Search Deals

15/10
3 total stops
58h 18m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£95 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 September 2025

Search Deals

Find flight deals from Heathrow to Idaho

Cheapest flights from Heathrow to Idaho
Explore the most affordable flight options available from Heathrow to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2025.

Tue 30/908:45LHR - GEG

2 stops22h 30mUnited Airlines

Sat 11/1007:15GEG - LHR

1 stop19h 10mUnited Airlines

Deal found 4/9£464

Fri 19/906:50LHR - GEG

2 stops36h 37mUnited Airlines

Wed 24/905:15GEG - LHR

2 stops17h 05mUnited Airlines

Deal found 4/9£468

Fri 19/911:25LHR - GEG

1 stop17h 38mUnited Airlines

Sat 27/907:15GEG - LHR

1 stop19h 10mUnited Airlines

Deal found 5/9£491

Fri 19/916:40LHR - GEG

2 stops36h 23mLufthansa

Sat 27/913:38GEG - LHR

2 stops34h 42mLufthansa

Deal found 5/9£506

Fri 21/1111:10LHR - BOI

2 stops18h 35mUnited Airlines

Sun 30/1110:40BOI - LHR

1 stop13h 45mUnited Airlines

Deal found 4/9£540

Fri 19/912:55LHR - GEG

2 stops19h 08mVirgin Atlantic

Sat 27/913:00GEG - LHR

2 stops33h 25mVirgin Atlantic

Deal found 3/9£546

Wed 10/914:30LHR - BOI

1 stop15h 27mVirgin Atlantic

Wed 24/916:20BOI - LHR

1 stop12h 00mVirgin Atlantic

Deal found 3/9£550

Thu 11/917:50LHR - BOI

2 stops35h 51mUnited Airlines

Sat 20/914:42BOI - LHR

1 stop14h 38mUnited Airlines

Deal found 4/9£554

Thu 11/914:50LHR - BOI

1 stop14h 31mLufthansa

Wed 24/914:42BOI - LHR

1 stop11h 58mLufthansa

Deal found 4/9£558

Thu 11/920:25LHR - BOI

2 stops30h 55mVirgin Atlantic

Wed 24/907:51BOI - LHR

2 stops16h 24mVirgin Atlantic

Deal found 4/9£561

Mon 6/1014:30LHR - BOI

1 stop15h 22mVirgin Atlantic

Mon 13/1011:12BOI - LHR

1 stop15h 38mVirgin Atlantic

Deal found 4/9£562

Fri 26/916:00LHR - BOI

2 stops26h 39mMultiple Airlines

Mon 6/1014:39BOI - LHR

1 stop12h 01mMultiple Airlines

Deal found 3/9£563

Best flights from Heathrow to Idaho
Discover carefully curated flight deals from Heathrow to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2025.

Tue 3/214:20LHR - GEG

1 stop30h 38mAmerican Airlines

Tue 10/206:00GEG - LHR

2 stops20h 10mAmerican Airlines

Deal found 4/9£457

Tue 30/908:45LHR - GEG

2 stops22h 30mUnited Airlines

Sat 11/1005:05GEG - LHR

2 stops20h 15mUnited Airlines

Deal found 4/9£464

Mon 2/207:40LHR - GEG

2 stops19h 21mMultiple Airlines

Sun 8/211:25GEG - LHR

1 stop15h 50mMultiple Airlines

Deal found 4/9£465

Thu 4/1215:50LHR - SUN

2 stops61h 14mVirgin Atlantic

Tue 9/1215:21SUN - LHR

1 stop11h 39mVirgin Atlantic

Deal found 3/9£578

Sat 22/1106:20LHR - IDA

2 stops18h 57mDelta

Wed 26/1118:57IDA - LHR

2 stops31h 03mDelta

Deal found 2/9£602

Sat 4/1011:25LHR - JAC

1 stop16h 24mLufthansa

Sat 11/1014:30JAC - LHR

1 stop14h 50mLufthansa

Deal found 4/9£678

Wed 4/209:35LHR - GEG

2 stops19h 10mAmerican Airlines

Tue 10/206:00GEG - LHR

2 stops20h 10mAmerican Airlines

Deal found 4/9£457

Fri 19/906:50LHR - GEG

2 stops36h 37mUnited Airlines

Wed 24/912:35GEG - LHR

1 stop13h 50mUnited Airlines

Deal found 4/9£468

Mon 2/210:35LHR - GEG

1 stop18h 10mAmerican Airlines

Tue 10/206:00GEG - LHR

2 stops20h 10mAmerican Airlines

Deal found 4/9£457

Fri 21/1106:35LHR - BOI

2 stops34h 23mUnited Airlines

Sun 30/1105:00BOI - LHR

1 stop21h 40mUnited Airlines

Deal found 3/9£540

Sat 28/217:20LHR - JAC

1 stop26h 40mMultiple Airlines

Sat 7/313:30JAC - LHR

1 stop20h 20mMultiple Airlines

Deal found 3/9£639

Mon 8/1207:40LHR - BOI

2 stops33h 19mUnited Airlines

Tue 16/1210:35BOI - LHR

1 stop13h 50mUnited Airlines

Deal found 4/9£540

Last-minute flights from Heathrow to Idaho
Discover last-minute flight deals from Heathrow to Idaho. Data last updated 5 September 2025 and is based on user searches.

Wed 10/912:45LHR - BOI

1 stop18h 13mVirgin Atlantic

Tue 23/915:45BOI - LHR

1 stop18h 30mVirgin Atlantic

Deal found 3/9£550

Wed 10/913:05LHR - BOI

2 stops17h 29mUnited Airlines

Wed 24/914:13BOI - LHR

2 stops15h 07mUnited Airlines

Deal found 3/9£564

Thu 11/917:50LHR - BOI

2 stops35h 51mUnited Airlines

Sat 20/914:42BOI - LHR

1 stop14h 38mUnited Airlines

Deal found 4/9£554

Thu 11/914:50LHR - BOI

1 stop14h 31mLufthansa

Wed 24/914:42BOI - LHR

1 stop11h 58mLufthansa

Deal found 4/9£558

Thu 11/920:25LHR - BOI

2 stops30h 55mVirgin Atlantic

Wed 24/907:51BOI - LHR

2 stops16h 24mVirgin Atlantic

Deal found 4/9£561

Fri 19/906:50LHR - GEG

2 stops36h 37mUnited Airlines

Wed 24/905:15GEG - LHR

2 stops17h 05mUnited Airlines

Deal found 4/9£468

Fri 19/911:25LHR - GEG

1 stop17h 38mUnited Airlines

Sat 27/907:15GEG - LHR

1 stop19h 10mUnited Airlines

Deal found 5/9£491

Fri 19/916:40LHR - GEG

2 stops36h 23mLufthansa

Sat 27/913:38GEG - LHR

2 stops34h 42mLufthansa

Deal found 5/9£506

Fri 19/912:55LHR - GEG

2 stops19h 08mVirgin Atlantic

Sat 27/913:00GEG - LHR

2 stops33h 25mVirgin Atlantic

Deal found 3/9£546

Fri 26/916:00LHR - BOI

2 stops26h 39mMultiple Airlines

Mon 6/1014:39BOI - LHR

1 stop12h 01mMultiple Airlines

Deal found 3/9£563

Tue 30/908:45LHR - GEG

2 stops22h 30mUnited Airlines

Sat 11/1007:15GEG - LHR

1 stop19h 10mUnited Airlines

Deal found 4/9£464

Mon 6/1014:30LHR - BOI

1 stop15h 22mVirgin Atlantic

Mon 13/1011:12BOI - LHR

1 stop15h 38mVirgin Atlantic

Deal found 4/9£562

One-way flights from Heathrow to Idaho
Search for one-way flight options from Heathrow to Idaho. Find affordable one-way fares based on user searches. Data last updated 5 September 2025.

Wed 15/1020:50LHR - GEG

3 stops58h 18mMultiple Airlines

Deal found 4/9£348

Sun 14/915:05LHR - BOI

3 stops36h 26mMultiple Airlines

Deal found 3/9£377

Sun 5/1006:00LHR - BOI

3 stops44h 56mMultiple Airlines

Deal found 2/9£419

Tue 16/920:50LHR - GEG

3 stops55h 26mMultiple Airlines

Deal found 4/9£421

Tue 7/1006:00LHR - BOI

3 stops24h 57mMultiple Airlines

Deal found 4/9£421

Mon 6/1018:45LHR - GEG

3 stops49h 52mMultiple Airlines

Deal found 4/9£438

Fri 28/1114:50LHR - BOI

2 stops24h 31mMultiple Airlines

Deal found 4/9£464

Fri 19/914:10LHR - GEG

3 stops37h 55mMultiple Airlines

Deal found 5/9£472

Sun 19/1006:40LHR - IDA

3 stops46h 58mMultiple Airlines

Deal found 4/9£487

Fri 19/911:25LHR - GEG

1 stop17h 38mLufthansa

Deal found 5/9£496

Sun 5/1010:35LHR - BOI

1 stop15h 40mAir New Zealand

Deal found 2/9£504

Tue 16/914:50LHR - GEG

1 stop14h 13mLufthansa

Deal found 4/9£514

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/2

14:20-12:58

1 stop30h 38m

Spokane

Tue 10/2

06:00-10:10

2 stops20h 10m

£457

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 4/2

09:35-20:45

2 stops19h 10m

Spokane

Tue 10/2

06:00-10:10

2 stops20h 10m

£457

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/2

10:35-20:45

1 stop18h 10m

Spokane

Tue 10/2

06:00-10:10

2 stops20h 10m

£457

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 30/9

08:45-23:15

2 stops22h 30m

Spokane

Sat 11/10

05:05-09:20

2 stops20h 15m

£464

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/2

07:40-19:01

2 stops19h 21m

Spokane

Sun 8/2

11:25-11:15

1 stop15h 50m

£465

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 19/9

06:50-11:27

2 stops36h 37m

Spokane

Wed 24/9

12:35-10:25

1 stop13h 50m

£468

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 21/11

06:35-09:58

2 stops34h 23m

Boise Air Term. Gowen Fld

Sun 30/11

05:00-09:40

1 stop21h 40m

£540

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Tue 16/12

10:35-07:25

1 stop13h 50m

£540

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 26/2

11:10-23:05

2 stops18h 55m

Boise Air Term. Gowen Fld

Thu 5/3

14:43-09:40

1 stop11h 57m

£542

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 1/3

11:10-09:43

2 stops29h 33m

Boise Air Term. Gowen Fld

Mon 9/3

10:39-09:40

1 stop17h 01m

£542

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 57 results

...

Best time to book a flight from Heathrow to Idaho

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

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

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

When flying from London Heathrow Airport 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.

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

Reviews of airlines servicing Idaho

See what other customers who have flown with Finnair, United Airlines, andVirgin Atlantic from London Heathrow Airport 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.

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,321 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

United Airlines

7.4

Good

8,935 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Virgin Atlantic

7.4

Good

663 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,394 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,348 reviews

Finnair

7.6

Good

1,321 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from London Heathrow Airport to Idaho?
For as low as £457, American Airlines can have you in Idaho from London Heathrow Airport in 30h 38m. Airlines will cover a distance of 4643 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from London Heathrow Airport to Idaho?
While some choose either London Heathrow - Jackson Hole or London Heathrow - Spokane, London Heathrow - Boise Air Term. Gowen Fld is the most popular route from London Heathrow Airport to Idaho.
Can I find deals for flights from Heathrow to Idaho that include hotel bookings?
Yes. In addition to deals on Heathrow to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Idaho.
Can I find deals for business class flights from Heathrow to Idaho?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Idaho?
Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of £754). Flying from London Heathrow Airport 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 Heathrow to Idaho

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Stansted to Miami flights

Heathrow to San Diego flights

Direct flights to United States

Top 6 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest£530	Average£629	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£537	Average£647	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£540	Average£852	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£542	Average£602	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£599	Average£825	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£702	Average£856	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Idaho from Heathrow today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Idaho.

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

Certainly. Search results for flights to Idaho from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from London Heathrow Airport to Idaho from £348

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Idaho

Keep the following information in mind while searching for Heathrow to Idaho flight deals. Data was last updated 5 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Idaho

Cheapest flights from Heathrow to IdahoExplore the most affordable flight options available from Heathrow to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2025.

Explore the most affordable flight options available from Heathrow to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Idaho

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Heathrow 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 5 September 2025.

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

Reviews of airlines servicing Idaho

Related info for your journey

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

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

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

How can I find direct flights from Heathrow to Idaho?

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

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

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

Top 6 airlines flying from Heathrow 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 Heathrow to Idaho?

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

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

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

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Cheapest flights from Heathrow to Idaho
Explore the most affordable flight options available from Heathrow to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2025.