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

For one-way options, check prices for WestJet. According to our data, you can fly for as low as £507. Users have also found prices from £610 and £755 on Lufthansa and Icelandair, respectively.

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

While some choose either London Heathrow - Spokane or London Heathrow - Jackson Hole, 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 Icelandair 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 12 days in advance to save up to 21% 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 12 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 £522, or £943 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 £714. You can even find prices in November for less than £714, as users have found deals to Idaho from as low as £523. 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 43%.

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.

£360+ Flights from London Heathrow Airport to Idaho

Cheap flight deals from Heathrow to Idaho

Round-trip from	£575
One-way from	£360
Popular in	August
Cheapest in	November
Average price	£678

United Airlines
1/6-8/6
3 total stops
61h 27m total
London to Idaho

Search Deals

13/5
2 total stops
22h 59m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£113 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 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 18 April 2025.

Fri 21/1113:35LHR - BOI

2 stops30h 55mUnited Airlines

Sun 30/1106:48BOI - LHR

1 stop17h 37mUnited Airlines

Deal found 17/4£562

Fri 19/916:15LHR - JAC

2 stops28h 28mUnited Airlines

Sat 27/913:40JAC - LHR

2 stops15h 05mUnited Airlines

Deal found 17/4£627

Mon 2/620:55LHR - GEG

2 stops33h 55mVirgin Atlantic

Mon 9/613:15GEG - LHR

2 stops16h 15mVirgin Atlantic

Deal found 18/4£634

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Mon 2/613:25LHR - GEG

1 stop15h 40mKLM

Mon 9/613:15GEG - LHR

1 stop17h 00mKLM

Deal found 18/4£645

Mon 2/606:30LHR - GEG

2 stops16h 20mDelta

Mon 9/608:20GEG - LHR

1 stop19h 00mDelta

Deal found 18/4£652

Mon 2/607:25LHR - GEG

2 stops21h 23mUnited Airlines

Mon 9/607:25GEG - LHR

1 stop19h 00mUnited Airlines

Deal found 18/4£672

Wed 18/608:30LHR - BOI

2 stops21h 22mLufthansa

Mon 23/614:35BOI - LHR

2 stops32h 45mLufthansa

Deal found 17/4£705

Wed 7/513:25LHR - IDA

1 stop16h 11mMultiple Airlines

Tue 20/516:20IDA - LHR

1 stop14h 55mMultiple Airlines

Deal found 17/4£718

Mon 2/607:05LHR - GEG

3 stops17h 55mScandinavian Airlines

Mon 9/611:17GEG - LHR

2 stops22h 23mScandinavian Airlines

Deal found 18/4£744

Sun 1/608:30LHR - BOI

2 stops19h 56mAir Canada

Sun 8/619:07BOI - LHR

2 stops28h 23mAir Canada

Deal found 17/4£751

Wed 17/911:05LHR - JAC

1 stop30h 58mLufthansa

Sat 27/917:55JAC - LHR

1 stop32h 45mLufthansa

Deal found 17/4£759

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 18 April 2025.

Sun 1/614:50LHR - BOI

2 stops32h 09mUnited Airlines

Sun 8/619:07BOI - LHR

1 stop29h 18mUnited Airlines

Deal found 17/4£575

Mon 2/620:55LHR - GEG

2 stops33h 55mVirgin Atlantic

Mon 9/613:15GEG - LHR

2 stops16h 15mVirgin Atlantic

Deal found 18/4£634

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Tue 24/611:30LHR - GEG

2 stops17h 37mDelta

Thu 3/715:25GEG - LHR

1 stop14h 50mDelta

Deal found 17/4£657

Wed 18/608:30LHR - BOI

2 stops21h 22mLufthansa

Mon 23/614:35BOI - LHR

2 stops32h 45mLufthansa

Deal found 17/4£705

Wed 7/513:25LHR - IDA

1 stop16h 11mMultiple Airlines

Tue 20/516:20IDA - LHR

1 stop14h 55mMultiple Airlines

Deal found 17/4£718

Mon 2/607:05LHR - GEG

3 stops17h 55mScandinavian Airlines

Mon 9/611:17GEG - LHR

2 stops22h 23mScandinavian Airlines

Deal found 18/4£744

Sun 1/608:30LHR - BOI

2 stops19h 56mAir Canada

Sun 8/619:07BOI - LHR

2 stops28h 23mAir Canada

Deal found 17/4£751

Tue 12/814:20LHR - BOI

1 stop15h 34mFinnair

Tue 19/807:30BOI - LHR

1 stop15h 55mFinnair

Deal found 17/4£1,019

Thu 7/816:30LHR - BOI

1 stop13h 16mBritish Airways

Fri 15/808:18BOI - LHR

1 stop16h 42mBritish Airways

Deal found 17/4£1,124

Fri 19/916:15LHR - JAC

2 stops28h 28mUnited Airlines

Sat 27/913:40JAC - LHR

2 stops15h 05mUnited Airlines

Deal found 17/4£627

Mon 2/613:25LHR - GEG

1 stop15h 40mKLM

Mon 9/613:15GEG - LHR

1 stop17h 00mKLM

Deal found 18/4£645

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

Wed 23/408:40LHR - GEG

2 stops20h 46mUnited Airlines

Sat 26/415:25GEG - LHR

2 stops31h 30mUnited Airlines

Deal found 17/4£1,499

Wed 7/511:45LHR - IDA

2 stops18h 06mKLM

Tue 20/512:30IDA - LHR

2 stops18h 45mKLM

Deal found 17/4£634

Wed 7/513:25LHR - IDA

1 stop16h 11mMultiple Airlines

Tue 20/516:20IDA - LHR

1 stop14h 55mMultiple Airlines

Deal found 17/4£718

Sun 11/506:30LHR - IDA

2 stops23h 21mDelta

Fri 20/606:00IDA - LHR

2 stops22h 25mDelta

Deal found 17/4£769

Sun 11/511:25LHR - IDA

1 stop29h 07mLufthansa

Fri 20/617:55IDA - LHR

1 stop32h 45mLufthansa

Deal found 17/4£819

Fri 16/516:15LHR - BOI

2 stops27h 24mUnited Airlines

Fri 30/510:42BOI - LHR

2 stops14h 38mUnited Airlines

Deal found 18/4£536

Sat 17/516:15LHR - JAC

2 stops36h 02mLufthansa

Sat 31/507:00JAC - LHR

1 stop22h 20mLufthansa

Deal found 17/4£825

Thu 22/513:25LHR - GEG

1 stop15h 40mVirgin Atlantic

Sun 25/517:40GEG - LHR

2 stops29h 05mVirgin Atlantic

Deal found 16/4£689

Thu 22/506:30LHR - GEG

2 stops18h 30mDelta

Sun 25/513:20GEG - LHR

2 stops15h 50mDelta

Deal found 16/4£713

Thu 22/514:10LHR - BOI

2 stops33h 31mLufthansa

Mon 2/619:07BOI - LHR

2 stops29h 08mLufthansa

Deal found 17/4£769

Thu 22/521:25LHR - BOI

2 stops32h 17mIcelandair

Mon 2/620:41BOI - LHR

2 stops40h 39mIcelandair

Deal found 18/4£786

Thu 22/519:50LHR - GEG

3 stops29h 10mScandinavian Airlines

Sun 25/511:15GEG - LHR

2 stops22h 25mScandinavian Airlines

Deal found 16/4£948

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 18 April 2025.

Tue 13/507:30LHR - GEG

2 stops22h 59mMultiple Airlines

Deal found 17/4£360

Thu 11/914:10LHR - BOI

2 stops16h 49mWestJet

Deal found 17/4£507

Mon 18/813:55LHR - BOI

3 stops34h 03mMultiple Airlines

Deal found 16/4£550

Tue 24/607:30LHR - GEG

2 stops17h 34mLufthansa

Deal found 17/4£610

Sat 3/514:10LHR - GEG

2 stops16h 40mWestJet

Deal found 17/4£617

Thu 21/811:25LHR - BOI

1 stop16h 49mLufthansa

Deal found 17/4£624

Wed 14/513:05LHR - GEG

2 stops18h 54mIcelandair

Deal found 17/4£755

Sat 12/708:20LHR - BOI

1 stop21h 06mIberia

Deal found 17/4£960

Thu 11/919:50LHR - BOI

3 stops29h 41mScandinavian Airlines

Deal found 17/4£1,896

Tue 24/619:50LHR - GEG

3 stops29h 02mScandinavian Airlines

Deal found 17/4£2,246

Sat 21/608:30LHR - BOI

3 stops19h 56mAir Canada

Deal found 17/4£2,536

Mon 12/515:50LHR - GEG

3 stops28h 48mAir Canada

Deal found 17/4£2,548

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

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 1/6

14:50-15:59

2 stops32h 09m

Boise Air Term. Gowen Fld

Sun 8/6

19:07-07:25

1 stop29h 18m

£575

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Fri 19/9

16:15-13:43

2 stops28h 28m

Jackson Hole

Sat 27/9

13:40-11:45

2 stops15h 05m

£627

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

20:55-22:50

2 stops33h 55m

Spokane

Mon 9/6

13:15-13:30

2 stops16h 15m

£634

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

11:45-22:51

2 stops18h 06m

Idaho Falls Fanning Field

Tue 20/5

12:30-14:15

2 stops18h 45m

£634

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

13:25-21:05

1 stop15h 40m

Spokane

Mon 9/6

13:15-14:15

1 stop17h 00m

£645

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

06:30-18:45

2 stops20h 15m

Spokane

Mon 9/6

13:00-13:10

2 stops16h 10m

£652

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

07:25-20:48

2 stops21h 23m

Spokane

Mon 9/6

07:25-10:25

1 stop19h 00m

£672

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 18/6

08:30-22:52

2 stops21h 22m

Boise Air Term. Gowen Fld

Mon 23/6

14:35-06:20

2 stops32h 45m

£705

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 7/5

13:25-22:36

1 stop16h 11m

Idaho Falls Fanning Field

Tue 20/5

16:20-14:15

1 stop14h 55m

£718

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 2/6

07:05-17:00

3 stops17h 55m

Spokane

Mon 9/6

11:17-17:40

2 stops22h 23m

£744

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 36 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

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,917 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,329 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,667 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 WestJet. According to our data, you can fly for as low as £507. Users have also found prices from £610 and £755 on Lufthansa and Icelandair, respectively.
What are the most popular routes from London Heathrow Airport to Idaho?
While some choose either London Heathrow - Spokane or London Heathrow - Jackson Hole, 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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Direct flights to United States

Top 7 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£496	Average£656	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£536	Average£809	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£538	Average£651	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£545	Average£601	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£584	Average£807	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£670	Average£820	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£678	Average£869	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 £360

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 13/5. 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 18 April 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 18 April 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 18 April 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 18 April 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 18 April 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 7 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?

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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 18 April 2025.