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 £467. Users have also found prices from £631 and £769 on Lufthansa and Icelandair, 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 68% 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 £547, or £1,098 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 £760. You can even find prices in November for less than £760, as users have found deals to Idaho from as low as £541. 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	£556
One-way from	£360
Popular in	August
Cheapest in	November
Average price	£636

United Airlines
5/5-15/5
4 total stops
75h 01m total
London to Idaho

Search Deals

14/5
2 total stops
54h 39m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£117 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 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 21 February 2025.

Fri 28/209:25LHR - BOI

1 stop19h 25mIberia

Sun 9/318:58BOI - LHR

1 stop15h 02mIberia

Deal found 21/2£545

Mon 5/507:25LHR - GEG

2 stops24h 13mUnited Airlines

Thu 15/506:00GEG - LHR

1 stop17h 25mUnited Airlines

Deal found 20/2£556

Mon 5/512:20LHR - GEG

1 stop19h 18mMultiple Airlines

Thu 15/515:25GEG - LHR

1 stop14h 45mMultiple Airlines

Deal found 20/2£572

Mon 17/306:30LHR - GEG

2 stops19h 14mDelta

Tue 25/306:00GEG - LHR

2 stops18h 55mDelta

Deal found 21/2£582

Thu 24/409:30LHR - BOI

2 stops19h 13mUnited Airlines

Sun 27/419:00BOI - LHR

1 stop29h 25mUnited Airlines

Deal found 20/2£596

Thu 24/411:25LHR - BOI

1 stop13h 27mMultiple Airlines

Sun 27/412:06BOI - LHR

1 stop35h 14mMultiple Airlines

Deal found 20/2£601

Sun 7/919:30LHR - GEG

2 stops32h 59mLufthansa

Sun 28/907:00GEG - LHR

1 stop16h 25mLufthansa

Deal found 20/2£602

Sun 7/909:20LHR - GEG

1 stop20h 36mKLM

Sun 28/915:05GEG - LHR

1 stop15h 10mKLM

Deal found 19/2£621

Fri 28/206:30LHR - BOI

2 stops19h 20mKLM

Sun 9/310:50BOI - LHR

1 stop19h 50mKLM

Deal found 20/2£624

Sun 16/315:50LHR - GEG

1 stop13h 59mVirgin Atlantic

Wed 26/307:00GEG - LHR

1 stop26h 40mVirgin Atlantic

Deal found 21/2£625

Fri 28/219:30LHR - BOI

2 stops33h 51mScandinavian Airlines

Sun 9/307:15BOI - LHR

2 stops26h 45mScandinavian Airlines

Deal found 20/2£652

Fri 19/916:25LHR - JAC

1 stop26h 32mFinnair

Sat 27/914:50JAC - LHR

1 stop18h 15mFinnair

Deal found 21/2£664

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 21 February 2025.

Mon 5/507:25LHR - GEG

2 stops39h 16mUnited Airlines

Thu 15/515:25GEG - LHR

2 stops35h 45mUnited Airlines

Deal found 20/2£556

Mon 5/512:20LHR - GEG

1 stop19h 18mMultiple Airlines

Thu 15/515:25GEG - LHR

1 stop14h 45mMultiple Airlines

Deal found 20/2£572

Mon 17/306:30LHR - GEG

2 stops19h 14mDelta

Tue 25/306:00GEG - LHR

2 stops18h 55mDelta

Deal found 21/2£582

Sun 16/315:50LHR - GEG

1 stop13h 59mVirgin Atlantic

Wed 26/307:00GEG - LHR

1 stop26h 40mVirgin Atlantic

Deal found 21/2£625

Mon 7/712:20LHR - GEG

1 stop18h 49mLufthansa

Tue 22/707:30GEG - LHR

2 stops19h 10mLufthansa

Deal found 20/2£694

Mon 19/521:25LHR - GEG

2 stops34h 29mIcelandair

Fri 23/519:26GEG - LHR

2 stops32h 29mIcelandair

Deal found 20/2£706

Tue 15/416:25LHR - IDA

1 stop27h 04mAmerican Airlines

Tue 29/407:43IDA - LHR

1 stop23h 57mAmerican Airlines

Deal found 20/2£731

Fri 6/617:40LHR - BOI

2 stops26h 52mAir Canada

Sun 8/619:07BOI - LHR

2 stops28h 28mAir Canada

Deal found 20/2£751

Mon 19/512:25LHR - GEG

1 stop18h 38mAir France

Fri 23/517:40GEG - LHR

1 stop12h 35mAir France

Deal found 20/2£813

Tue 27/511:45LHR - IDA

2 stops17h 29mKLM

Tue 10/619:00IDA - LHR

2 stops14h 15mKLM

Deal found 20/2£871

Thu 24/409:30LHR - BOI

2 stops19h 13mUnited Airlines

Sun 27/419:00BOI - LHR

1 stop29h 25mUnited Airlines

Deal found 20/2£596

Thu 24/411:25LHR - BOI

1 stop13h 27mMultiple Airlines

Sun 27/412:06BOI - LHR

1 stop35h 14mMultiple Airlines

Deal found 20/2£601

Last-minute flights from Heathrow to Idaho
Discover last-minute flight deals from Heathrow to Idaho. Data last updated 21 February 2025 and is based on user searches.

Mon 24/206:20LHR - JAC

2 stops17h 18mAir France

Tue 25/207:05JAC - LHR

1 stop19h 55mAir France

Deal found 20/2£2,689

Mon 24/206:20LHR - JAC

2 stops17h 18mMultiple Airlines

Tue 25/213:10JAC - LHR

2 stops15h 30mMultiple Airlines

Deal found 20/2£2,693

Mon 24/211:35LHR - JAC

1 stop16h 19mLufthansa

Tue 25/212:45JAC - LHR

1 stop15h 30mLufthansa

Deal found 20/2£3,142

Fri 28/209:25LHR - BOI

1 stop19h 25mIberia

Sun 9/318:58BOI - LHR

1 stop15h 02mIberia

Deal found 21/2£545

Fri 28/206:30LHR - BOI

2 stops19h 20mKLM

Sun 9/310:50BOI - LHR

1 stop19h 50mKLM

Deal found 20/2£624

Fri 28/219:30LHR - BOI

2 stops33h 51mScandinavian Airlines

Sun 9/307:15BOI - LHR

2 stops26h 45mScandinavian Airlines

Deal found 20/2£652

Fri 28/206:40LHR - BOI

3 stops24h 19mMultiple Airlines

Sun 9/307:15BOI - LHR

2 stops26h 45mMultiple Airlines

Deal found 21/2£998

Fri 28/210:40LHR - BOI

1 stop18h 10mIberia

Sun 9/318:58BOI - LHR

1 stop15h 02mIberia

Deal found 20/2£568

Fri 28/206:40LHR - BOI

2 stops23h 19mMultiple Airlines

Sun 9/307:15BOI - LHR

3 stops29h 35mMultiple Airlines

Deal found 20/2£1,234

Sun 2/319:35LHR - BOI

2 stops27h 41mAir France

Sun 16/313:05BOI - LHR

2 stops36h 50mAir France

Deal found 21/2£950

Sat 15/306:30LHR - GEG

2 stops16h 08mKLM

Thu 27/312:50GEG - LHR

1 stop15h 50mKLM

Deal found 21/2£1,017

Sun 16/315:50LHR - GEG

1 stop13h 59mVirgin Atlantic

Wed 26/307:00GEG - LHR

1 stop26h 40mVirgin Atlantic

Deal found 21/2£625

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 21 February 2025.

Wed 14/515:05LHR - BOI

2 stops54h 39mMultiple Airlines

Deal found 21/2£360

Fri 16/506:00LHR - GEG

2 stops24h 22mMultiple Airlines

Deal found 20/2£425

Wed 30/414:10LHR - GEG

2 stops16h 39mWestJet

Deal found 20/2£467

Wed 14/514:10LHR - BOI

3 stops33h 19mWestJet

Deal found 21/2£577

Mon 18/814:50LHR - BOI

1 stop13h 26mLufthansa

Deal found 19/2£631

Wed 18/612:20LHR - GEG

1 stop18h 44mLufthansa

Deal found 20/2£765

Wed 14/513:05LHR - GEG

2 stops15h 56mIcelandair

Deal found 20/2£769

Fri 16/512:25LHR - GEG

1 stop18h 38mDelta

Deal found 20/2£1,240

Mon 18/807:05LHR - BOI

3 stops19h 15mScandinavian Airlines

Deal found 19/2£2,246

Sun 6/413:40LHR - GEG

2 stops33h 23mUnited Airlines

Deal found 20/2£2,477

Fri 6/611:25LHR - BOI

1 stop17h 01mUnited Airlines

Deal found 20/2£2,477

Find flights from Heathrow to Idaho within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 5/5

07:25-14:41

2 stops39h 16m

Spokane

Thu 15/5

15:25-11:10

2 stops35h 45m

£556

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 5/5

12:20-23:38

1 stop19h 18m

Spokane

Thu 15/5

15:25-14:10

1 stop14h 45m

£572

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 17/3

06:30-18:44

2 stops19h 14m

Spokane

Tue 25/3

06:00-07:55

2 stops18h 55m

£582

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 24/4

09:30-21:43

2 stops19h 13m

Boise Air Term. Gowen Fld

Sun 27/4

19:00-07:25

1 stop29h 25m

£596

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 24/4

11:25-17:52

1 stop13h 27m

Boise Air Term. Gowen Fld

Sun 27/4

12:06-06:20

1 stop35h 14m

£601

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 16/3

15:50-22:49

1 stop13h 59m

Spokane

Wed 26/3

07:00-16:40

1 stop26h 40m

£625

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 7/7

12:20-23:09

1 stop18h 49m

Spokane

Tue 22/7

07:30-10:40

2 stops19h 10m

£694

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 15/4

20:55-22:56

2 stops33h 01m

Idaho Falls Fanning Field

Tue 29/4

13:10-14:15

2 stops18h 05m

£694

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 19/5

21:25-23:54

2 stops34h 29m

Spokane

Fri 23/5

19:26-11:55

2 stops32h 29m

£706

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 26/6

12:20-23:28

1 stop18h 08m

Boise Air Term. Gowen Fld

Mon 7/7

18:43-10:25

1 stop32h 42m

£710

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 35 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.

Travel insights for flights from Heathrow to Idaho

Get recent, data-driven insights about flights from Heathrow to Idaho including ideal travel times, pricing trends, and more.

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

8,212 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

8,212 reviews

Delta

8.0

Very Good

8,212 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

1,333 reviews

Delta

8.0

Very Good

8,212 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

8,212 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

7.5

Good

654 reviews

Delta

8.0

Very Good

8,212 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

1,449 reviews

Delta

8.0

Very Good

8,212 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 £467. Users have also found prices from £631 and £769 on Lufthansa and Icelandair, 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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Heathrow to Ontario flights

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Heathrow to Sky Harbor Intl flights

Direct flights to United States

Top 7 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£521	Average£691	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£563	Average£849	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£564	Average£839	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£569	Average£637	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£613	Average£888	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£662	Average£860	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£712	Average£911	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 14/5. 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 21 February 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 21 February 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 21 February 2025.

Find flights from Heathrow to Idaho within your budget

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.

Travel insights for flights from Heathrow to Idaho

Get recent, data-driven insights about flights from Heathrow to Idaho including ideal travel times, pricing trends, and more.

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 21 February 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

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 21 February 2025.