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 £525. Users have also found prices from £831 and £897 on Icelandair and Virgin Atlantic, respectively.

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.

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).

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 - Idaho Falls Fanning Field, 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 17 days in advance to save up to 19% 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 17 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 £627, or £1,034 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 £703. You can even find prices in November for less than £703, as users have found deals to Idaho from as low as £515. The month of July 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 32%.

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.

£382+ Flights from London Heathrow Airport to Idaho

Cheap flight deals from Heathrow to Idaho

Round-trip from	£516
One-way from	£382
Popular in	July
Cheapest in	November
Average price	£934

United Airlines
1/9-8/9
4 total stops
56h 45m total
London to Idaho

Search Deals

30/8
2 total stops
38h 49m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£110 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 July 2025.

Mon 1/912:10LHR - GEG

2 stops54h 28mUnited Airlines

Mon 8/912:35GEG - LHR

1 stop34h 50mUnited Airlines

Deal found 18/7£516

Mon 1/920:55LHR - GEG

2 stops34h 53mVirgin Atlantic

Mon 8/917:30GEG - LHR

1 stop33h 50mVirgin Atlantic

Deal found 17/7£518

Mon 1/910:35LHR - GEG

1 stop20h 30mLufthansa

Mon 8/912:35GEG - LHR

1 stop34h 50mLufthansa

Deal found 18/7£533

Mon 1/906:40LHR - GEG

2 stops23h 45mMultiple Airlines

Mon 8/906:25GEG - LHR

2 stops27h 15mMultiple Airlines

Deal found 18/7£549

Mon 25/811:15LHR - BOI

1 stop15h 35mMultiple Airlines

Tue 9/912:43BOI - LHR

1 stop19h 57mMultiple Airlines

Deal found 16/7£560

Sat 30/807:25LHR - BOI

2 stops21h 56mUnited Airlines

Sat 13/914:42BOI - LHR

1 stop14h 38mUnited Airlines

Deal found 17/7£595

Sat 30/809:30LHR - BOI

2 stops18h 45mLufthansa

Sat 20/914:42BOI - LHR

2 stops17h 58mLufthansa

Deal found 16/7£603

Fri 26/914:05LHR - BOI

2 stops39h 25mAir Canada

Mon 6/1014:39BOI - LHR

2 stops34h 56mAir Canada

Deal found 18/7£609

Mon 25/806:30LHR - BOI

2 stops17h 27mDelta

Tue 9/910:45BOI - LHR

2 stops17h 15mDelta

Deal found 17/7£622

Wed 6/809:55LHR - GEG

2 stops16h 50mDelta

Thu 14/813:21GEG - LHR

2 stops16h 09mDelta

Deal found 16/7£628

Sat 22/1106:20LHR - IDA

2 stops18h 54mDelta

Wed 26/1106:05IDA - LHR

1 stop20h 55mDelta

Deal found 17/7£656

Sat 30/806:40LHR - BOI

2 stops20h 40mScandinavian Airlines

Sat 13/915:45BOI - LHR

3 stops22h 50mScandinavian Airlines

Deal found 17/7£669

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 July 2025.

Mon 1/908:40LHR - GEG

2 stops22h 25mUnited Airlines

Mon 8/912:35GEG - LHR

2 stops34h 20mUnited Airlines

Deal found 18/7£516

Mon 1/920:55LHR - GEG

2 stops34h 53mVirgin Atlantic

Mon 8/917:30GEG - LHR

2 stops29h 15mVirgin Atlantic

Deal found 17/7£518

Mon 1/910:35LHR - GEG

1 stop20h 30mLufthansa

Mon 8/912:35GEG - LHR

1 stop34h 50mLufthansa

Deal found 18/7£533

Mon 1/906:40LHR - GEG

2 stops23h 45mMultiple Airlines

Mon 8/906:25GEG - LHR

2 stops27h 15mMultiple Airlines

Deal found 18/7£549

Fri 26/914:05LHR - BOI

2 stops39h 25mAir Canada

Mon 6/1014:39BOI - LHR

2 stops34h 56mAir Canada

Deal found 18/7£609

Mon 25/806:30LHR - BOI

2 stops17h 27mDelta

Tue 9/910:45BOI - LHR

2 stops17h 15mDelta

Deal found 17/7£622

Sat 30/806:40LHR - BOI

2 stops20h 40mScandinavian Airlines

Sat 13/915:45BOI - LHR

3 stops22h 50mScandinavian Airlines

Deal found 17/7£669

Wed 27/806:15LHR - BOI

2 stops22h 28mAmerican Airlines

Sun 7/913:07BOI - LHR

2 stops34h 08mAmerican Airlines

Deal found 17/7£699

Thu 28/813:05LHR - BOI

2 stops16h 35mIcelandair

Sat 6/920:46BOI - LHR

2 stops16h 34mIcelandair

Deal found 17/7£720

Mon 1/916:25LHR - JAC

1 stop33h 21mAlaska Airlines

Mon 8/916:18JAC - LHR

1 stop35h 32mAlaska Airlines

Deal found 17/7£771

Mon 25/811:15LHR - BOI

1 stop15h 35mMultiple Airlines

Tue 9/912:43BOI - LHR

1 stop19h 57mMultiple Airlines

Deal found 16/7£560

Sat 30/807:25LHR - BOI

2 stops21h 56mUnited Airlines

Sat 13/914:42BOI - LHR

1 stop14h 38mUnited Airlines

Deal found 17/7£595

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

Wed 6/811:00LHR - GEG

1 stop15h 17mVirgin Atlantic

Thu 14/814:25GEG - LHR

1 stop14h 45mVirgin Atlantic

Deal found 16/7£613

Wed 6/809:55LHR - GEG

2 stops16h 50mDelta

Thu 14/813:21GEG - LHR

2 stops16h 09mDelta

Deal found 16/7£628

Mon 25/810:35LHR - GEG

1 stop20h 30mUnited Airlines

Tue 9/916:00GEG - LHR

1 stop12h 20mUnited Airlines

Deal found 18/7£542

Mon 25/811:15LHR - BOI

1 stop15h 35mMultiple Airlines

Tue 9/912:43BOI - LHR

1 stop19h 57mMultiple Airlines

Deal found 16/7£560

Mon 25/806:30LHR - BOI

2 stops17h 27mDelta

Tue 9/910:45BOI - LHR

2 stops17h 15mDelta

Deal found 17/7£622

Sat 30/806:40LHR - GEG

2 stops23h 45mMultiple Airlines

Sat 6/906:25GEG - LHR

2 stops28h 05mMultiple Airlines

Deal found 16/7£562

Sat 30/807:25LHR - BOI

2 stops21h 56mUnited Airlines

Sat 13/914:42BOI - LHR

1 stop14h 38mUnited Airlines

Deal found 17/7£595

Sat 30/809:30LHR - BOI

2 stops18h 45mLufthansa

Sat 20/914:42BOI - LHR

2 stops17h 58mLufthansa

Deal found 16/7£603

Sat 30/806:40LHR - BOI

2 stops20h 40mScandinavian Airlines

Sat 13/915:45BOI - LHR

3 stops22h 50mScandinavian Airlines

Deal found 17/7£669

Sat 30/806:40LHR - IDA

2 stops22h 59mMultiple Airlines

Sat 6/906:13IDA - LHR

2 stops26h 47mMultiple Airlines

Deal found 16/7£676

Sat 30/806:40LHR - GEG

2 stops18h 09mScandinavian Airlines

Sat 6/913:21GEG - LHR

3 stops21h 29mScandinavian Airlines

Deal found 16/7£680

Sun 31/807:25LHR - GEG

2 stops21h 38mLufthansa

Sun 7/912:35GEG - LHR

1 stop34h 50mLufthansa

Deal found 17/7£600

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 July 2025.

Sat 30/815:05LHR - BOI

2 stops38h 49mMultiple Airlines

Deal found 16/7£382

Thu 21/808:05LHR - GEG

3 stops18h 45mMultiple Airlines

Deal found 16/7£394

Thu 21/809:30LHR - GEG

2 stops19h 33mLufthansa

Deal found 16/7£525

Thu 11/907:30LHR - BOI

2 stops17h 29mLufthansa

Deal found 18/7£568

Wed 30/707:05LHR - IDA

3 stops40h 59mMultiple Airlines

Deal found 18/7£627

Sun 31/821:25LHR - SUN

2 stops43h 09mMultiple Airlines

Deal found 17/7£691

Tue 13/121:05LHR - JAC

3 stops46h 47mMultiple Airlines

Deal found 17/7£719

Sat 9/821:25LHR - BOI

2 stops32h 21mIcelandair

Deal found 17/7£831

Tue 13/110:45LHR - JAC

1 stop12h 48mVirgin Atlantic

Deal found 17/7£897

Wed 10/910:35LHR - GEG

1 stop20h 30mAir New Zealand

Deal found 17/7£991

Sat 2/813:25LHR - GEG

1 stop13h 45mVirgin Atlantic

Deal found 17/7£1,313

Fri 1/806:55LHR - JAC

2 stops18h 00mLufthansa

Deal found 17/7£1,323

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

Mon 1/9

08:40-23:05

2 stops22h 25m

Spokane

Mon 8/9

12:35-06:55

2 stops34h 20m

£516

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 1/9

20:55-23:48

2 stops34h 53m

Spokane

Mon 8/9

17:30-06:45

2 stops29h 15m

£518

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 1/9

10:35-23:05

1 stop20h 30m

Spokane

Mon 8/9

12:35-07:25

1 stop34h 50m

£533

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 1/9

06:40-22:25

2 stops23h 45m

Spokane

Mon 8/9

06:25-17:40

2 stops27h 15m

£549

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 25/8

11:15-19:50

1 stop15h 35m

Boise Air Term. Gowen Fld

Tue 9/9

12:43-15:40

1 stop19h 57m

£560

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 30/8

07:25-22:21

2 stops21h 56m

Boise Air Term. Gowen Fld

Sat 13/9

14:42-12:20

1 stop14h 38m

£595

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 30/8

09:30-21:15

2 stops18h 45m

Boise Air Term. Gowen Fld

Sat 20/9

14:42-15:40

2 stops17h 58m

£603

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 26/9

14:05-22:30

2 stops39h 25m

Boise Air Term. Gowen Fld

Mon 6/10

14:39-08:35

2 stops34h 56m

£609

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 25/8

06:30-16:57

2 stops17h 27m

Boise Air Term. Gowen Fld

Tue 9/9

10:45-11:00

2 stops17h 15m

£622

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 6/8

09:55-18:45

2 stops16h 50m

Spokane

Thu 14/8

13:21-13:30

2 stops16h 09m

£628

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 45 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.

Reviews of airlines servicing Idaho

See what other customers who have flown with Alaska Airlines, Delta, andAir New Zealand from London Heathrow Airport to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Alaska Airlines

8.0

Very Good

10,000 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Delta

8.0

Very Good

7,958 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Air New Zealand

8.0

Very Good

496 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Finnair

7.6

Good

1,316 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

SWISS

7.5

Good

1,661 reviews

Alaska Airlines

8.0

Very Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 £525. Users have also found prices from £831 and £897 on Icelandair and Virgin Atlantic, 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 - Idaho Falls Fanning Field, 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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Direct flights to United States

Top 6 airlines flying from Heathrow to Idaho

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest£531	Average£631	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£536	Average£586	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Finnair	Cheapest£539	Average£649	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£541	Average£810	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Virgin Atlantic	Cheapest£604	Average£859	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£670	Average£858	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 £382

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 30/8. 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 July 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 July 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 July 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 July 2025.

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 July 2025.

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 18 July 2025.