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$641+ Cheap flights from Heathrow (LHR) to Idaho

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$644
(Netflights)

One-way from

$641
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$921
From London Heathrow to Idaho
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One-way flight from London Heathrow to Idaho
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Highest demand for flights based on searches. 16% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Netflights deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:15 amLHR - GEG
2 stops20h 30mVirgin Atlantic
Wed 9/1710:20 amGEG - LHR
2 stops15h 55mVirgin Atlantic
Deal found 6/11$644
This ChecknFly deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:25 amLHR - BOI
1 stop16h 59mLufthansa
Mon 11/310:39 amBOI - LHR
1 stop16h 01mLufthansa
Deal found 6/12$866
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:25 amLHR - BOI
2 stops33h 27mUnited Airlines
Mon 11/32:40 pmBOI - LHR
1 stop33h 45mUnited Airlines
Deal found 6/10$868
This Trip.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/231:35 pmLHR - BOI
1 stop16h 19mMultiple Airlines
Sun 9/78:10 amBOI - LHR
1 stop18h 50mMultiple Airlines
Deal found 6/12$875
This Netflights deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1812:45 pmLHR - BOI
1 stop18h 06mVirgin Atlantic
Mon 6/2311:54 amBOI - LHR
2 stops16h 31mVirgin Atlantic
Deal found 6/11$883
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1811:45 amLHR - BOI
2 stops19h 29mDelta
Mon 6/232:00 pmBOI - LHR
2 stops16h 30mDelta
Deal found 6/11$890
This ChecknFly deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:30 amLHR - JAC
2 stops19h 09mLufthansa
Sat 9/274:18 pmJAC - LHR
2 stops35h 52mLufthansa
Deal found 6/11$903
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:40 amLHR - GEG
2 stops18h 16mDelta
Thu 7/105:05 amGEG - LHR
1 stop22h 15mDelta
Deal found 6/12$911
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1611:25 amLHR - GEG
1 stop17h 38mUnited Airlines
Sun 7/206:25 pmGEG - LHR
2 stops29h 15mUnited Airlines
Deal found 6/11$949
This Netflights deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/229:20 amLHR - JAC
1 stop18h 14mVirgin Atlantic
Fri 10/38:05 amJAC - LHR
2 stops18h 10mVirgin Atlantic
Deal found 6/11$968
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:15 amLHR - JAC
2 stops19h 04mDelta
Fri 10/38:05 amJAC - LHR
2 stops18h 10mDelta
Deal found 6/12$981
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:25 pmLHR - JAC
1 stop25h 05mAmerican Airlines
Sat 9/274:29 pmJAC - LHR
1 stop13h 01mAmerican Airlines
Deal found 6/11$1,003

Cheapflights Fare Finder

Customize your flight search to find flights from Heathrow to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho that are best for you.

Fly from

Heathrow

Fly to

Idaho

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 9/9

6:15 am-6:45 pm

2 stops20h 30m

Spokane

Wed 9/17

10:20 am-10:15 am

2 stops15h 55m

$644

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 10/24

11:25 am-9:24 pm

1 stop16h 59m

Boise Air Term. Gowen Fld

Mon 11/3

10:39 am-9:40 am

1 stop16h 01m

$866

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 10/24

7:25 am-9:52 am

2 stops33h 27m

Boise Air Term. Gowen Fld

Mon 11/3

2:40 pm-7:25 am

1 stop33h 45m

$868

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 8/23

1:35 pm-10:54 pm

1 stop16h 19m

Boise Air Term. Gowen Fld

Sun 9/7

8:10 am-10:00 am

1 stop18h 50m

$875

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 9/17

8:30 am-8:39 pm

2 stops19h 09m

Jackson Hole

Sat 9/27

4:18 pm-11:10 am

2 stops35h 52m

$903

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 7/1

6:30 am-6:56 pm

2 stops20h 26m

Spokane

Thu 7/10

1:10 pm-1:10 pm

2 stops16h 00m

$911

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 7/16

11:25 am-9:03 pm

1 stop17h 38m

Spokane

Sun 7/20

6:25 pm-7:40 am

2 stops29h 15m

$949

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 9/22

9:20 am-8:34 pm

1 stop18h 14m

Jackson Hole

Fri 10/3

8:05 am-9:15 am

2 stops18h 10m

$968

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 9/22

6:15 am-6:19 pm

2 stops19h 04m

Jackson Hole

Fri 10/3

8:05 am-9:15 am

2 stops18h 10m

$981

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 9/17

4:25 pm-10:30 am

1 stop25h 05m

Jackson Hole

Sat 9/27

4:29 pm-12:30 pm

1 stop13h 01m

$1,003

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 43 results
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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 round-trip 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 $314). Flying from London Heathrow Airport to Idaho in June is currently the most expensive (average of $395). 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.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from London to Idaho. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    $828 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Finnair and WestJet, with prices starting from $970 and $985, 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 - Spokane, 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 vacation 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 $314). Flying from London Heathrow Airport to Idaho in June is currently the most expensive (average of $395). 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

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Alternative routes for Heathrow to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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