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

For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as £609. Users have also found prices from £714 and £725 on Finnair and WestJet, respectively.

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

While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Heathrow - Spokane, London Heathrow - Jackson Hole 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 56 days in advance to save up to 18% 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 56 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 £620, or £1,020 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 November. Prices to Idaho from London Heathrow Airport average £694. You can even find prices in November for less than £694, as users have found deals to Idaho from as low as £509. The month of August 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 44%.

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.

£472+ Flights from London Heathrow Airport to Idaho

Cheap flight deals from Heathrow to Idaho

Round-trip from	£474
One-way from	£472
Popular in	August
Cheapest in	November
Average price	£678

Virgin Atlantic
9/9-17/9
4 total stops
36h 25m total
London to Idaho

Search Deals

22/9
2 total stops
20h 05m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£102 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Tue 9/906:15LHR - GEG

2 stops20h 30mVirgin Atlantic

Wed 17/910:20GEG - LHR

2 stops15h 55mVirgin Atlantic

Deal found 11/6£474

Fri 24/1011:25LHR - BOI

1 stop16h 59mLufthansa

Mon 3/1110:39BOI - LHR

1 stop16h 01mLufthansa

Deal found 12/6£637

Sat 23/813:35LHR - BOI

1 stop16h 19mMultiple Airlines

Sun 7/908:10BOI - LHR

1 stop26h 05mMultiple Airlines

Deal found 12/6£644

Wed 18/612:45LHR - BOI

1 stop18h 06mVirgin Atlantic

Mon 23/611:54BOI - LHR

2 stops16h 31mVirgin Atlantic

Deal found 11/6£650

Wed 18/611:45LHR - BOI

2 stops19h 29mDelta

Mon 23/614:00BOI - LHR

2 stops16h 30mDelta

Deal found 11/6£655

Wed 17/916:15LHR - JAC

1 stop28h 36mLufthansa

Sat 27/915:15JAC - LHR

2 stops36h 55mLufthansa

Deal found 13/6£665

Sat 23/812:05LHR - BOI

3 stops32h 44mUnited Airlines

Sun 7/919:09BOI - LHR

1 stop29h 16mUnited Airlines

Deal found 12/6£667

Tue 1/708:40LHR - GEG

2 stops18h 16mDelta

Thu 10/705:05GEG - LHR

1 stop22h 15mDelta

Deal found 12/6£670

Thu 28/819:30LHR - BOI

2 stops29h 46mScandinavian Airlines

Sat 6/914:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 12/6£690

Wed 16/714:10LHR - GEG

1 stop15h 49mUnited Airlines

Sun 20/718:25GEG - LHR

1 stop31h 15mUnited Airlines

Deal found 11/6£698

Mon 22/909:20LHR - JAC

1 stop18h 14mVirgin Atlantic

Fri 3/1008:05JAC - LHR

2 stops18h 10mVirgin Atlantic

Deal found 11/6£712

Mon 22/906:15LHR - JAC

2 stops19h 04mDelta

Fri 3/1008:05JAC - LHR

2 stops18h 10mDelta

Deal found 12/6£722

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 13 June 2025.

Tue 9/906:15LHR - GEG

2 stops20h 30mVirgin Atlantic

Wed 17/910:20GEG - LHR

2 stops15h 55mVirgin Atlantic

Deal found 11/6£474

Fri 24/1011:25LHR - BOI

1 stop16h 59mLufthansa

Mon 3/1110:39BOI - LHR

1 stop16h 01mLufthansa

Deal found 12/6£637

Sat 23/813:35LHR - BOI

1 stop16h 19mMultiple Airlines

Sun 7/908:10BOI - LHR

1 stop26h 05mMultiple Airlines

Deal found 12/6£644

Sat 23/812:05LHR - BOI

3 stops32h 44mUnited Airlines

Sun 7/919:09BOI - LHR

1 stop29h 16mUnited Airlines

Deal found 12/6£667

Tue 1/708:40LHR - GEG

2 stops18h 16mDelta

Thu 10/705:05GEG - LHR

1 stop22h 15mDelta

Deal found 12/6£670

Thu 28/819:30LHR - BOI

2 stops29h 46mScandinavian Airlines

Sat 6/914:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 12/6£690

Wed 17/908:20LHR - JAC

1 stop18h 39mAmerican Airlines

Sat 27/916:29JAC - LHR

1 stop13h 01mAmerican Airlines

Deal found 12/6£738

Thu 26/615:10LHR - BOI

1 stop15h 09mIberia

Mon 7/715:35BOI - LHR

1 stop15h 50mIberia

Deal found 12/6£762

Fri 4/711:45LHR - IDA

2 stops18h 10mKLM

Thu 10/711:20IDA - LHR

2 stops20h 45mKLM

Deal found 11/6£773

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

Sat 26/710:55LHR - SUN

1 stop18h 01mAir France

Sat 2/812:38SUN - LHR

1 stop14h 12mAir France

Deal found 11/6£1,051

Wed 17/908:30LHR - JAC

2 stops19h 09mLufthansa

Sat 27/916:18JAC - LHR

2 stops35h 52mLufthansa

Deal found 12/6£665

Last-minute flights from Heathrow to Idaho
Discover last-minute flight deals from Heathrow to Idaho. Data last updated 13 June 2025 and is based on user searches.

Wed 18/612:45LHR - BOI

1 stop18h 06mVirgin Atlantic

Mon 23/611:54BOI - LHR

2 stops16h 31mVirgin Atlantic

Deal found 11/6£650

Wed 18/611:45LHR - BOI

2 stops19h 29mDelta

Mon 23/614:00BOI - LHR

2 stops16h 30mDelta

Deal found 11/6£655

Wed 18/613:05LHR - BOI

2 stops40h 41mIcelandair

Mon 23/620:46BOI - LHR

2 stops32h 09mIcelandair

Deal found 12/6£1,034

Wed 18/611:25LHR - BOI

1 stop13h 36mLufthansa

Mon 23/605:10BOI - LHR

2 stops18h 35mLufthansa

Deal found 12/6£1,037

Wed 18/607:05LHR - BOI

3 stops20h 30mScandinavian Airlines

Mon 23/614:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 11/6£1,716

Thu 26/615:10LHR - BOI

1 stop15h 09mIberia

Mon 7/715:35BOI - LHR

1 stop15h 50mIberia

Deal found 12/6£762

Sat 28/610:55LHR - IDA

1 stop14h 17mVirgin Atlantic

Wed 2/713:09IDA - LHR

1 stop13h 41mVirgin Atlantic

Deal found 12/6£776

Sat 28/612:25LHR - IDA

2 stops17h 30mDelta

Wed 2/713:09IDA - LHR

2 stops17h 36mDelta

Deal found 12/6£800

Tue 1/710:55LHR - GEG

1 stop13h 25mVirgin Atlantic

Wed 16/714:22GEG - LHR

1 stop14h 48mVirgin Atlantic

Deal found 12/6£665

Tue 1/706:30LHR - GEG

2 stops20h 26mDelta

Thu 10/713:10GEG - LHR

2 stops16h 00mDelta

Deal found 12/6£670

Fri 4/711:45LHR - IDA

2 stops18h 10mKLM

Thu 10/711:20IDA - LHR

2 stops20h 45mKLM

Deal found 11/6£773

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

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 13 June 2025.

Mon 22/910:20LHR - GEG

2 stops20h 05mMultiple Airlines

Deal found 10/6£472

Mon 15/916:35LHR - JAC

2 stops30h 34mMultiple Airlines

Deal found 11/6£552

Thu 11/907:30LHR - BOI

2 stops20h 44mLufthansa

Deal found 12/6£609

Sat 21/612:00LHR - BOI

1 stop17h 29mFinnair

Deal found 12/6£714

Thu 21/814:10LHR - BOI

2 stops15h 13mWestJet

Deal found 11/6£725

Sat 21/621:25LHR - BOI

2 stops32h 21mIcelandair

Deal found 11/6£758

Mon 15/917:40LHR - JAC

3 stops33h 59mUnited Airlines

Deal found 11/6£1,314

Thu 11/919:50LHR - BOI

3 stops29h 41mScandinavian Airlines

Deal found 12/6£1,880

Tue 24/619:50LHR - GEG

3 stops28h 50mScandinavian Airlines

Deal found 12/6£2,228

Sun 27/709:30LHR - GEG

2 stops19h 33mUnited Airlines

Deal found 12/6£2,465

Sat 11/1015:50LHR - GEG

3 stops28h 46mAir Canada

Deal found 12/6£2,520

Sat 21/608:30LHR - BOI

3 stops19h 56mAir Canada

Deal found 12/6£2,545

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 9/9

06:15-18:45

2 stops20h 30m

Spokane

Wed 17/9

10:20-10:15

2 stops15h 55m

£474

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 24/10

11:25-21:24

1 stop16h 59m

Boise Air Term. Gowen Fld

Mon 3/11

10:39-09:40

1 stop16h 01m

£637

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 23/8

13:35-22:54

1 stop16h 19m

Boise Air Term. Gowen Fld

Sun 7/9

08:10-17:15

1 stop26h 05m

£644

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 17/9

16:15-13:51

1 stop28h 36m

Jackson Hole

Sat 27/9

15:15-11:10

2 stops36h 55m

£665

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 23/8

12:05-13:49

3 stops32h 44m

Boise Air Term. Gowen Fld

Sun 7/9

19:09-07:25

1 stop29h 16m

£667

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 1/7

08:40-18:56

2 stops18h 16m

Spokane

Thu 10/7

05:05-11:20

1 stop22h 15m

£670

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 28/8

19:30-18:16

2 stops29h 46m

Boise Air Term. Gowen Fld

Sat 6/9

14:00-16:00

2 stops19h 00m

£690

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 16/7

11:25-21:03

1 stop17h 38m

Spokane

Sun 20/7

18:25-07:40

2 stops29h 15m

£698

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 22/9

09:20-20:34

1 stop18h 14m

Jackson Hole

Fri 3/10

08:05-09:15

2 stops18h 10m

£712

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 22/9

06:15-18:19

2 stops19h 04m

Jackson Hole

Fri 3/10

08:05-09:15

2 stops18h 10m

£722

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 42 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.

Rainfall in Idaho by month

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.

Temperature in Idaho by month

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).

Reviews of airlines servicing Idaho

See what other customers who have flown with Delta, KLM and Finnair from London to Idaho have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,950 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,463 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines to fly from London Heathrow Airport to Idaho one-way?
For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as £609. Users have also found prices from £714 and £725 on Finnair and WestJet, respectively.
What are the most popular routes from London Heathrow Airport to Idaho?
While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Heathrow - Spokane, London Heathrow - Jackson Hole 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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Gatwick to Orlando flights

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Heathrow to Hobby flights

Stansted to Newark flights

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London City to O'Hare Intl flights

Heathrow to Raleigh flights

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Direct flights to United States

Top 6 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£511	Average£640	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£524	Average£622	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£528	Average£811	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£531	Average£591	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£584	Average£839	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£661	Average£847	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 £472

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 22/9. 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 13 June 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 13 June 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 13 June 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 13 June 2025.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

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 13 June 2025.

See what other customers who have flown with Delta, KLM and Finnair from London to Idaho have to say. Users have also rated airlines 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 Heathrow to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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 13 June 2025.