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Idaho

$476+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$705
(United Airlines)

One-way from

$476
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,176
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. 15% potential increase in price ($167 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 6/30. 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 9/241:45 pmLHR - GEG
2 stops41h 30mUnited Airlines
Sun 9/2812:35 pmGEG - LHR
1 stop34h 50mUnited Airlines
Deal found 6/30$705
This American Airlines deal was found by Cheapflights users on 7/2. 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 9/248:25 amLHR - GEG
2 stops18h 52mAmerican Airlines
Sun 9/281:30 pmGEG - LHR
1 stop35h 40mAmerican Airlines
Deal found 7/2$708
This Lufthansa deal was found by Cheapflights users on 7/2. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:50 pmLHR - GEG
1 stop14h 13mLufthansa
Sun 9/2812:35 pmGEG - LHR
1 stop13h 50mLufthansa
Deal found 7/2$740
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sun 9/712:05 pmLHR - BOI
2 stops17h 36mUnited Airlines
Sat 9/207:00 amBOI - LHR
2 stops16h 45mUnited Airlines
Deal found 7/2$844
This Lufthansa deal was found by Cheapflights users on 7/2. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:50 pmLHR - BOI
1 stop13h 25mLufthansa
Sat 9/2012:27 pmBOI - LHR
1 stop12h 53mLufthansa
Deal found 7/2$848
This Delta deal was found by Cheapflights users on 7/2. 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 9/16:30 amLHR - SUN
2 stops22h 26mDelta
Tue 9/93:15 pmSUN - LHR
2 stops21h 45mDelta
Deal found 7/2$853
This Air Canada deal was found by Cheapflights users on 7/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:00 pmLHR - BOI
2 stops24h 39mMultiple Airlines
Sun 11/306:15 amBOI - LHR
2 stops17h 15mMultiple Airlines
Deal found 7/3$857
This TravelUp deal was found by Cheapflights users on 7/2. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:40 amLHR - SUN
2 stops44h 16mVirgin Atlantic
Tue 9/912:37 pmSUN - LHR
2 stops15h 23mVirgin Atlantic
Deal found 7/2$857
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Fri 9/56:10 amLHR - BOI
2 stops22h 38mAmerican Airlines
Sun 9/211:07 pmBOI - LHR
2 stops33h 43mAmerican Airlines
Deal found 7/2$875
This lol.travel deal was found by Cheapflights users on 7/3. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1712:00 pmLHR - GEG
1 stop18h 36mIberia
Sun 8/2412:27 pmGEG - LHR
1 stop33h 58mIberia
Deal found 7/3$885
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 11/224:30 pmLHR - IDA
1 stop26h 49mAmerican Airlines
Wed 11/261:50 pmIDA - LHR
1 stop15h 25mAmerican Airlines
Deal found 7/2$885
This Air Canada deal was found by Cheapflights users on 7/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/69:30 amLHR - BOI
2 stops20h 11mAir Canada
Fri 9/1912:27 pmBOI - LHR
2 stops16h 23mAir Canada
Deal found 7/2$889

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 July 3, 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

Wed 9/24

1:45 pm-11:15 pm

2 stops41h 30m

Spokane

Sun 9/28

5:15 am-6:30 am

2 stops17h 15m

$705

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 9/24

8:25 am-7:17 pm

2 stops18h 52m

Spokane

Sun 9/28

1:30 pm-9:10 am

1 stop35h 40m

$708

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 9/24

2:50 pm-9:03 pm

1 stop14h 13m

Spokane

Sun 9/28

12:35 pm-10:25 am

1 stop13h 50m

$740

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 9/7

12:05 pm-10:41 pm

2 stops17h 36m

Boise Air Term. Gowen Fld

Sat 9/20

7:00 am-6:45 am

2 stops16h 45m

$844

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/5

2:50 pm-9:15 pm

1 stop13h 25m

Boise Air Term. Gowen Fld

Sat 9/20

12:27 pm-8:20 am

1 stop12h 53m

$848

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Mon 9/1

6:30 am-9:56 pm

2 stops22h 26m

Hailey Sun Valley-Friedman

Wed 9/10

3:15 pm-8:00 pm

2 stops21h 45m

$853

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 11/21

6:00 pm-11:39 am

2 stops24h 39m

Boise Air Term. Gowen Fld

Sun 11/30

6:15 am-6:30 am

2 stops17h 15m

$857

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 8/30

8:40 am-9:56 pm

2 stops44h 16m

Hailey Sun Valley-Friedman

Tue 9/9

12:37 pm-11:00 am

2 stops15h 23m

$857

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/5

6:10 am-9:48 pm

2 stops22h 38m

Boise Air Term. Gowen Fld

Sun 9/21

1:07 pm-5:50 am

2 stops33h 43m

$875

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 8/17

12:00 pm-10:36 pm

1 stop18h 36m

Spokane

Sun 8/24

12:27 pm-6:25 am

1 stop33h 58m

$885

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 48 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 $398). 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.

How much does it cost to fly round-trip from London Heathrow Airport to Idaho?

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 July 3, 2025.
Get a feel of what it's like to fly with Delta, Alaska Airlines, and KLM from London Heathrow Airport to Idaho by reading reviews from past customers. 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
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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
1,366 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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
1,306 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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
1,473 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

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?

    $775 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Iberia and Finnair, with prices starting from $974 and $1,072, 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 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 $398). 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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