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 £496. Users have also found prices from £613 and £653 on Lufthansa and Air New Zealand, 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 - Jackson Hole, London Heathrow - Spokane 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 £517, or £935 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 £708. You can even find prices in November for less than £708, as users have found deals to Idaho from as low as £519. 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.

£400+ Flights from London Heathrow Airport to Idaho

Cheap flight deals from Heathrow to Idaho

Round-trip from	£582
One-way from	£400
Popular in	August
Cheapest in	November
Average price	£669

Lufthansa
26/9-6/10
3 total stops
35h 38m total
London to Idaho

Search Deals

15/5
3 total stops
23h 22m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£111 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 29 April 2025.

Fri 26/911:25LHR - BOI

1 stop17h 07mLufthansa

Mon 6/1019:09BOI - LHR

2 stops18h 31mLufthansa

Deal found 28/4£582

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£630

Tue 24/609:55LHR - GEG

2 stops19h 12mDelta

Thu 3/709:40GEG - LHR

2 stops19h 30mDelta

Deal found 28/4£650

Wed 11/613:45LHR - GEG

2 stops41h 29mUnited Airlines

Wed 18/618:00GEG - LHR

1 stop34h 20mUnited Airlines

Deal found 28/4£667

Mon 9/607:25LHR - BOI

2 stops17h 36mUnited Airlines

Mon 30/608:30BOI - LHR

1 stop16h 50mUnited Airlines

Deal found 28/4£669

Tue 24/615:10LHR - GEG

1 stop16h 10mAmerican Airlines

Thu 3/715:10GEG - LHR

1 stop15h 30mAmerican Airlines

Deal found 28/4£670

Tue 3/609:30LHR - BOI

2 stops18h 56mAir Canada

Wed 25/606:30BOI - LHR

2 stops20h 30mAir Canada

Deal found 28/4£693

Sat 27/912:20LHR - JAC

2 stops31h 24mLufthansa

Sat 4/1016:20JAC - LHR

1 stop13h 00mLufthansa

Deal found 28/4£721

Wed 28/506:30LHR - IDA

2 stops23h 21mVirgin Atlantic

Wed 11/615:04IDA - LHR

2 stops32h 41mVirgin Atlantic

Deal found 28/4£730

Tue 3/606:30LHR - BOI

2 stops16h 49mDelta

Wed 25/613:46BOI - LHR

1 stop16h 44mDelta

Deal found 28/4£766

Sun 11/506:30LHR - IDA

2 stops23h 21mDelta

Fri 20/615:04IDA - LHR

2 stops15h 06mDelta

Deal found 28/4£766

Thu 22/509:50LHR - BOI

1 stop19h 52mBritish Airways

Mon 2/616:01BOI - LHR

1 stop13h 59mBritish Airways

Deal found 28/4£769

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 29 April 2025.

Fri 26/911:25LHR - BOI

1 stop17h 07mLufthansa

Mon 6/1019:09BOI - LHR

2 stops18h 31mLufthansa

Deal found 28/4£582

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£630

Tue 24/609:55LHR - GEG

2 stops19h 12mDelta

Thu 3/709:40GEG - LHR

2 stops19h 30mDelta

Deal found 28/4£650

Wed 11/613:45LHR - GEG

2 stops41h 29mUnited Airlines

Wed 18/618:00GEG - LHR

1 stop34h 20mUnited Airlines

Deal found 28/4£667

Tue 24/615:10LHR - GEG

1 stop16h 10mAmerican Airlines

Thu 3/715:10GEG - LHR

1 stop15h 30mAmerican Airlines

Deal found 28/4£670

Tue 3/609:30LHR - BOI

2 stops18h 56mAir Canada

Wed 25/606:30BOI - LHR

2 stops20h 30mAir Canada

Deal found 28/4£693

Thu 22/509:50LHR - BOI

1 stop19h 52mBritish Airways

Mon 2/616:01BOI - LHR

1 stop13h 59mBritish Airways

Deal found 28/4£769

Tue 3/610:55LHR - BOI

1 stop12h 47mMultiple Airlines

Wed 25/613:47BOI - LHR

1 stop16h 43mMultiple Airlines

Deal found 28/4£779

Thu 22/521:25LHR - BOI

2 stops32h 17mIcelandair

Mon 2/620:41BOI - LHR

2 stops40h 39mIcelandair

Deal found 28/4£783

Tue 27/510:55LHR - IDA

1 stop14h 15mAir France

Tue 10/611:20IDA - LHR

1 stop15h 30mAir France

Deal found 28/4£836

Mon 18/810:20LHR - BOI

2 stops19h 26mFinnair

Thu 28/813:41BOI - LHR

1 stop17h 44mFinnair

Deal found 28/4£839

Wed 18/606:40LHR - BOI

3 stops19h 26mScandinavian Airlines

Mon 23/614:00BOI - LHR

2 stops19h 00mScandinavian Airlines

Deal found 28/4£842

Last-minute flights from Heathrow to Idaho
Discover last-minute flight deals from Heathrow to Idaho. Data last updated 29 April 2025 and is based on user searches.

Thu 1/514:20LHR - BOI

1 stop15h 35mFinnair

Sat 10/507:14BOI - LHR

1 stop20h 36mFinnair

Deal found 28/4£944

Thu 1/515:05LHR - BOI

2 stops52h 37mMultiple Airlines

Sat 10/515:30BOI - LHR

1 stop15h 25mMultiple Airlines

Deal found 28/4£1,001

Thu 8/509:30LHR - GEG

2 stops43h 20mUnited Airlines

Sun 11/515:25GEG - LHR

1 stop32h 00mUnited Airlines

Deal found 28/4£942

Sun 11/506:30LHR - IDA

2 stops23h 21mDelta

Fri 20/615:04IDA - LHR

2 stops15h 06mDelta

Deal found 28/4£766

Sun 11/514:50LHR - IDA

1 stop14h 55mLufthansa

Fri 20/614:25IDA - LHR

1 stop14h 55mLufthansa

Deal found 28/4£804

Mon 19/517:25LHR - GEG

1 stop13h 25mVirgin Atlantic

Mon 26/509:45GEG - LHR

1 stop16h 05mVirgin Atlantic

Deal found 29/4£630

Thu 22/509:50LHR - BOI

1 stop19h 52mBritish Airways

Mon 2/616:01BOI - LHR

1 stop13h 59mBritish Airways

Deal found 28/4£769

Thu 22/521:25LHR - BOI

2 stops32h 17mIcelandair

Mon 2/620:41BOI - LHR

2 stops40h 39mIcelandair

Deal found 28/4£783

Thu 22/511:20LHR - BOI

1 stop18h 29mVirgin Atlantic

Mon 2/613:50BOI - LHR

2 stops33h 55mVirgin Atlantic

Deal found 28/4£791

Thu 22/509:55LHR - BOI

2 stops18h 11mDelta

Mon 2/619:18BOI - LHR

2 stops17h 42mDelta

Deal found 29/4£798

Tue 27/510:55LHR - IDA

1 stop14h 15mAir France

Tue 10/611:20IDA - LHR

1 stop15h 30mAir France

Deal found 28/4£836

Wed 28/506:30LHR - IDA

2 stops23h 21mVirgin Atlantic

Wed 11/615:04IDA - LHR

2 stops32h 41mVirgin Atlantic

Deal found 28/4£730

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 29 April 2025.

Thu 15/506:20LHR - BOI

3 stops23h 22mMultiple Airlines

Deal found 28/4£400

Sun 15/614:10LHR - BOI

2 stops40h 49mWestJet

Deal found 28/4£496

Mon 12/513:55LHR - GEG

2 stops16h 55mWestJet

Deal found 28/4£601

Mon 12/516:15LHR - GEG

1 stop15h 23mLufthansa

Deal found 28/4£613

Thu 11/914:50LHR - BOI

1 stop13h 24mLufthansa

Deal found 28/4£634

Tue 24/615:10LHR - GEG

1 stop16h 10mMultiple Airlines

Deal found 28/4£642

Sat 21/612:20LHR - BOI

1 stop16h 24mAir New Zealand

Deal found 28/4£653

Sat 19/721:25LHR - GEG

2 stops34h 34mIcelandair

Deal found 27/4£867

Fri 15/812:25LHR - GEG

1 stop18h 38mVirgin Atlantic

Deal found 28/4£1,260

Tue 12/812:25LHR - GEG

1 stop18h 38mAir France

Deal found 29/4£1,629

Thu 11/919:50LHR - BOI

3 stops29h 41mScandinavian Airlines

Deal found 28/4£1,891

Sun 1/621:25LHR - BOI

2 stops32h 17mIcelandair

Deal found 28/4£1,991

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

Fri 26/9

11:25-21:32

1 stop17h 07m

Boise Air Term. Gowen Fld

Mon 6/10

19:09-20:40

2 stops18h 31m

£582

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 19/5

17:25-22:50

1 stop13h 25m

Spokane

Mon 26/5

09:45-09:50

1 stop16h 05m

£630

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 24/6

09:55-21:07

2 stops19h 12m

Spokane

Thu 3/7

09:40-13:10

2 stops19h 30m

£650

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 11/6

13:45-23:14

2 stops41h 29m

Spokane

Wed 18/6

18:00-12:20

1 stop34h 20m

£667

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/6

07:25-18:01

2 stops17h 36m

Boise Air Term. Gowen Fld

Mon 30/6

08:30-08:20

1 stop16h 50m

£669

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 24/6

15:10-23:20

1 stop16h 10m

Spokane

Thu 3/7

15:10-14:40

1 stop15h 30m

£670

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 3/6

09:30-21:26

2 stops18h 56m

Boise Air Term. Gowen Fld

Wed 25/6

06:30-10:00

2 stops20h 30m

£693

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Sat 27/9

12:20-12:44

2 stops31h 24m

Jackson Hole

Sat 4/10

16:20-12:20

1 stop13h 00m

£721

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 28/5

06:30-22:51

2 stops23h 21m

Idaho Falls Fanning Field

Wed 11/6

15:04-06:45

2 stops32h 41m

£730

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 3/6

06:30-16:19

2 stops16h 49m

Boise Air Term. Gowen Fld

Wed 25/6

13:46-13:30

1 stop16h 44m

£766

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 47 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, Air New Zealand 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

7,929 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

7,929 reviews

Delta

8.0

Very Good

7,929 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

Air New Zealand

8.0

Very Good

471 reviews

Delta

8.0

Very Good

7,929 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

1,273 reviews

Delta

8.0

Very Good

7,929 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

Air France

7.4

Good

1,444 reviews

Delta

8.0

Very Good

7,929 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

8,696 reviews

Delta

8.0

Very Good

7,929 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 £496. Users have also found prices from £613 and £653 on Lufthansa and Air New Zealand, 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 - Jackson Hole, London Heathrow - Spokane 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£492	Average£653	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£533	Average£648	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£536	Average£841	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£540	Average£594	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£579	Average£799	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£664	Average£812	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£672	Average£861	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 £400

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 15/5. 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 29 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 29 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 29 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 29 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 29 April 2025.

See what other customers who have flown with Delta, Air New Zealand 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?

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 29 April 2025.