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 £485. Users have also found prices from £627 and £742 on Lufthansa and Finnair, respectively.

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

While some choose either London Heathrow - Idaho Falls Fanning Field 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 62% 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 £534, or £965 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 £739. You can even find prices in November for less than £739, as users have found deals to Idaho from as low as £538. 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 41%.

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.

£374+ Flights from London Heathrow Airport to Idaho

Cheap flight deals from Heathrow to Idaho

Round-trip from	£418
One-way from	£374
Popular in	August
Cheapest in	November
Average price	£707

United Airlines
29/4-8/5
3 total stops
43h 19m total
London to Idaho

Search Deals

22/4
2 total stops
36h 57m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£117 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 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 March 2025.

Tue 29/412:20LHR - BOI

2 stops31h 24mUnited Airlines

Thu 8/517:25BOI - LHR

1 stop11h 55mUnited Airlines

Deal found 28/3£418

Mon 12/508:40LHR - GEG

2 stops38h 01mUnited Airlines

Mon 19/515:25GEG - LHR

1 stop32h 00mUnited Airlines

Deal found 28/3£551

Sun 11/517:10LHR - GEG

2 stops38h 05mVirgin Atlantic

Sun 18/517:40GEG - LHR

2 stops29h 35mVirgin Atlantic

Deal found 27/3£559

Tue 29/411:05LHR - BOI

1 stop18h 44mLufthansa

Tue 6/510:20BOI - LHR

1 stop16h 20mLufthansa

Deal found 28/3£566

Mon 21/406:30LHR - GEG

2 stops20h 15mDelta

Mon 5/513:15GEG - LHR

2 stops15h 55mDelta

Deal found 27/3£584

Mon 21/408:20LHR - GEG

1 stop21h 18mAmerican Airlines

Mon 5/506:27GEG - LHR

1 stop24h 13mAmerican Airlines

Deal found 27/3£594

Mon 1/916:15LHR - JAC

2 stops28h 28mUnited Airlines

Mon 15/915:00JAC - LHR

2 stops33h 25mUnited Airlines

Deal found 27/3£626

Tue 22/412:00LHR - BOI

1 stop17h 11mFinnair

Wed 30/407:05BOI - LHR

1 stop16h 20mFinnair

Deal found 28/3£636

Tue 22/421:25LHR - BOI

2 stops32h 14mIcelandair

Wed 30/413:00BOI - LHR

2 stops15h 55mIcelandair

Deal found 28/3£648

Sat 12/412:25LHR - BOI

1 stop18h 24mKLM

Sat 26/413:00BOI - LHR

1 stop13h 50mKLM

Deal found 28/3£699

Sun 11/513:25LHR - IDA

2 stops16h 26mKLM

Sun 18/518:50IDA - LHR

2 stops15h 25mKLM

Deal found 27/3£711

Sat 12/410:55LHR - BOI

2 stops16h 55mAir France

Sat 26/416:40BOI - LHR

1 stop14h 35mAir France

Deal found 28/3£721

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 March 2025.

Tue 29/412:20LHR - BOI

2 stops31h 24mUnited Airlines

Thu 8/517:25BOI - LHR

1 stop11h 55mUnited Airlines

Deal found 28/3£418

Sun 11/517:10LHR - GEG

2 stops38h 05mVirgin Atlantic

Sun 18/517:40GEG - LHR

2 stops29h 35mVirgin Atlantic

Deal found 27/3£559

Tue 29/411:05LHR - BOI

1 stop18h 44mLufthansa

Tue 6/510:20BOI - LHR

1 stop16h 20mLufthansa

Deal found 28/3£566

Mon 21/406:30LHR - GEG

2 stops20h 15mDelta

Mon 5/513:15GEG - LHR

2 stops15h 55mDelta

Deal found 27/3£584

Mon 21/408:20LHR - GEG

1 stop21h 18mAmerican Airlines

Mon 5/506:27GEG - LHR

1 stop24h 13mAmerican Airlines

Deal found 27/3£594

Tue 22/412:00LHR - BOI

1 stop17h 11mFinnair

Wed 30/407:05BOI - LHR

1 stop16h 20mFinnair

Deal found 28/3£636

Tue 22/421:25LHR - BOI

2 stops32h 14mIcelandair

Wed 30/413:00BOI - LHR

2 stops15h 55mIcelandair

Deal found 28/3£648

Sat 12/412:25LHR - BOI

1 stop18h 24mKLM

Sat 26/413:00BOI - LHR

1 stop13h 50mKLM

Deal found 28/3£699

Sat 12/410:55LHR - BOI

2 stops16h 55mAir France

Sat 26/416:40BOI - LHR

1 stop14h 35mAir France

Deal found 28/3£721

Sun 11/506:15LHR - IDA

2 stops23h 21mMultiple Airlines

Sun 18/506:00IDA - LHR

1 stop22h 20mMultiple Airlines

Deal found 27/3£750

Tue 29/410:20LHR - BOI

2 stops18h 14mScandinavian Airlines

Tue 6/513:10BOI - LHR

3 stops22h 20mScandinavian Airlines

Deal found 28/3£846

Mon 21/415:50LHR - GEG

3 stops28h 48mAir Canada

Mon 5/505:29GEG - LHR

3 stops19h 06mAir Canada

Deal found 27/3£1,042

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

Thu 3/417:25LHR - GEG

1 stop33h 18mVirgin Atlantic

Wed 23/411:15GEG - LHR

1 stop19h 00mVirgin Atlantic

Deal found 28/3£694

Sat 5/409:55LHR - BOI

1 stop17h 55mVirgin Atlantic

Sat 19/413:00BOI - LHR

1 stop13h 50mVirgin Atlantic

Deal found 28/3£1,098

Sat 5/406:30LHR - BOI

2 stops18h 56mDelta

Sat 19/411:25BOI - LHR

2 stops19h 05mDelta

Deal found 28/3£1,119

Sat 5/406:40LHR - BOI

2 stops23h 17mMultiple Airlines

Sat 19/413:00BOI - LHR

3 stops21h 40mMultiple Airlines

Deal found 28/3£1,630

Wed 16/406:30LHR - IDA

2 stops23h 26mDelta

Tue 22/418:55IDA - LHR

2 stops28h 50mDelta

Deal found 27/3£767

Mon 21/406:30LHR - GEG

2 stops20h 15mDelta

Mon 5/513:15GEG - LHR

2 stops15h 55mDelta

Deal found 27/3£584

Mon 21/408:20LHR - GEG

1 stop21h 18mAmerican Airlines

Mon 5/506:27GEG - LHR

1 stop24h 13mAmerican Airlines

Deal found 27/3£594

Mon 21/417:40LHR - GEG

2 stops26h 58mMultiple Airlines

Mon 5/505:29GEG - LHR

3 stops19h 06mMultiple Airlines

Deal found 27/3£898

Mon 21/415:50LHR - GEG

3 stops28h 48mAir Canada

Mon 5/505:29GEG - LHR

3 stops19h 06mAir Canada

Deal found 27/3£1,042

Tue 22/412:00LHR - BOI

1 stop17h 11mFinnair

Wed 30/407:05BOI - LHR

1 stop16h 20mFinnair

Deal found 28/3£636

Tue 22/412:25LHR - BOI

1 stop18h 38mKLM

Fri 2/515:30BOI - LHR

1 stop14h 40mKLM

Deal found 27/3£648

Sun 27/406:30LHR - JAC

2 stops21h 22mLufthansa

Sun 4/514:35JAC - LHR

1 stop12h 05mLufthansa

Deal found 28/3£746

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 March 2025.

Tue 22/414:10LHR - BOI

2 stops36h 57mMultiple Airlines

Deal found 28/3£374

Thu 22/507:40LHR - GEG

3 stops41h 33mMultiple Airlines

Deal found 27/3£460

Thu 11/914:10LHR - BOI

2 stops16h 54mWestJet

Deal found 28/3£485

Thu 11/907:30LHR - BOI

2 stops20h 46mLufthansa

Deal found 27/3£627

Sat 3/507:25LHR - GEG

2 stops21h 25mLufthansa

Deal found 28/3£647

Tue 22/408:20LHR - BOI

1 stop20h 51mFinnair

Deal found 28/3£742

Sat 21/621:25LHR - BOI

2 stops32h 21mIcelandair

Deal found 28/3£793

Thu 22/517:25LHR - GEG

1 stop14h 40mVirgin Atlantic

Deal found 27/3£1,346

Wed 18/607:40LHR - JAC

3 stops59h 42mMultiple Airlines

Deal found 27/3£1,367

Wed 18/607:40LHR - IDA

3 stops45h 59mMultiple Airlines

Deal found 27/3£1,397

Tue 22/407:05LHR - BOI

3 stops21h 29mScandinavian Airlines

Deal found 28/3£1,894

Sat 3/514:10LHR - GEG

3 stops30h 28mUnited Airlines

Deal found 27/3£3,091

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

Tue 29/4

12:20-12:44

2 stops31h 24m

Boise Air Term. Gowen Fld

Thu 8/5

17:25-12:20

1 stop11h 55m

£418

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 12/5

08:40-14:41

2 stops38h 01m

Spokane

Mon 19/5

15:25-07:25

1 stop32h 00m

£551

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 11/5

17:10-23:15

2 stops38h 05m

Spokane

Sun 18/5

17:40-07:15

2 stops29h 35m

£559

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 29/4

11:05-22:49

1 stop18h 44m

Boise Air Term. Gowen Fld

Tue 6/5

10:20-09:40

1 stop16h 20m

£566

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 21/4

06:30-18:45

2 stops20h 15m

Spokane

Mon 5/5

13:15-13:10

2 stops15h 55m

£584

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 21/4

08:20-21:38

1 stop21h 18m

Spokane

Mon 5/5

06:27-14:40

1 stop24h 13m

£594

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 1/9

16:15-13:43

2 stops28h 28m

Jackson Hole

Mon 15/9

15:00-07:25

2 stops33h 25m

£626

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 22/4

12:00-22:11

1 stop17h 11m

Boise Air Term. Gowen Fld

Wed 30/4

07:05-06:25

1 stop16h 20m

£636

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 22/4

21:25-22:39

2 stops32h 14m

Boise Air Term. Gowen Fld

Wed 30/4

13:00-11:55

2 stops15h 55m

£648

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 12/4

12:25-23:49

1 stop18h 24m

Boise Air Term. Gowen Fld

Sat 26/4

13:00-09:50

1 stop13h 50m

£699

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 43 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

7,897 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

7,897 reviews

Delta

8.0

Very Good

7,897 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

1,321 reviews

Delta

8.0

Very Good

7,897 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

1,267 reviews

Delta

8.0

Very Good

7,897 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

1,424 reviews

Delta

8.0

Very Good

7,897 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

8,609 reviews

Delta

8.0

Very Good

7,897 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 £485. Users have also found prices from £627 and £742 on Lufthansa and Finnair, respectively.
What are the most popular routes from London Heathrow Airport to Idaho?
While some choose either London Heathrow - Idaho Falls Fanning Field 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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Stansted to Boston flights

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Heathrow to San Diego flights

Heathrow to Ontario flights

Heathrow to Stewart flights

Direct flights to United States

Top 7 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£508	Average£672	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£549	Average£798	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£550	Average£639	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£555	Average£620	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£598	Average£880	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£686	Average£838	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£694	Average£889	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 £374

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 22/4. 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 March 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 March 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 March 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 March 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 March 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?

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 March 2025.