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Idaho

$496+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from Heathrow to Idaho

Best flights from Heathrow to Idaho
Discover carefully curated flight deals from Heathrow to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 31, 2025.

This United Airlines deal was found by Cheapflights users on 12/30. 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.
Thu 2/56:35 amLHR - GEG
2 stops20h 41mUnited Airlines
Sun 2/811:25 amGEG - LHR
1 stop34h 30mUnited Airlines
Deal found 12/30$707
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:45 pmLHR - GEG
1 stop15h 22mLufthansa
Sat 3/77:02 amGEG - LHR
1 stop16h 23mLufthansa
Deal found 12/30$719
This TravelUp deal was found by Cheapflights users on 12/29. 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.
Tue 1/1310:45 amLHR - IDA
2 stops18h 34mVirgin Atlantic
Tue 1/201:15 pmIDA - LHR
2 stops15h 40mVirgin Atlantic
Deal found 12/29$828
This Finnair deal was found by Cheapflights users on 12/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/264:30 pmLHR - IDA
1 stop28h 07mMultiple Airlines
Mon 2/22:07 pmIDA - LHR
1 stop14h 33mMultiple Airlines
Deal found 12/29$865
This American Airlines deal was found by Cheapflights users on 12/29. 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.
Mon 1/264:30 pmLHR - IDA
1 stop28h 07mAmerican Airlines
Mon 2/22:07 pmIDA - LHR
1 stop14h 33mAmerican Airlines
Deal found 12/29$882
This The Travel House deal was found by Cheapflights users on 12/30. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/104:30 pmLHR - SUN
2 stops34h 47mFinnair
Sat 1/1712:16 pmSUN - LHR
2 stops59h 04mFinnair
Deal found 12/30$920
This Delta deal was found by Cheapflights users on 12/29. 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.
Sat 1/1010:10 amLHR - SUN
2 stops18h 45mDelta
Sat 1/177:25 amSUN - LHR
2 stops18h 35mDelta
Deal found 12/29$947
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 3/106:35 amLHR - GEG
2 stops21h 28mUnited Airlines
Tue 3/175:00 amGEG - LHR
1 stop21h 40mUnited Airlines
Deal found 12/29$708
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Mon 5/47:25 amLHR - GEG
2 stops22h 10mUnited Airlines
Sun 5/106:00 amGEG - LHR
1 stop24h 10mUnited Airlines
Deal found 12/29$724
This Netflights deal was found by Cheapflights users on 12/30. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1211:05 amLHR - BOI
1 stop16h 50mVirgin Atlantic
Mon 1/261:47 pmBOI - LHR
1 stop14h 53mVirgin Atlantic
Deal found 12/30$836
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Mon 1/269:00 amLHR - BOI
2 stops19h 23mUnited Airlines
Mon 2/210:48 amBOI - LHR
2 stops17h 27mUnited Airlines
Deal found 12/29$747
This Virgin Atlantic deal was found by Cheapflights users on 12/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/268:25 pmLHR - IDA
2 stops33h 32mVirgin Atlantic
Mon 2/21:15 pmIDA - LHR
1 stop13h 45mVirgin Atlantic
Deal found 12/29$849
This Air France deal was found by Cheapflights users on 12/29. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1010:45 amLHR - SUN
1 stop18h 10mMultiple Airlines
Sat 1/177:25 amSUN - LHR
1 stop19h 35mMultiple Airlines
Deal found 12/29$947
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Mon 3/27:40 amLHR - BOI
2 stops33h 32mUnited Airlines
Mon 3/1612:59 pmBOI - LHR
1 stop36h 26mUnited Airlines
Deal found 12/30$752
This Delta deal was found by Cheapflights users on 12/29. 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 3/178:00 pmLHR - JAC
2 stops29h 02mDelta
Tue 3/247:20 amJAC - LHR
2 stops19h 25mDelta
Deal found 12/29$1,033
This TravelUp deal was found by Cheapflights users on 12/29. 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.
Thu 1/2210:45 amLHR - IDA
1 stop14h 06mVirgin Atlantic
Sat 1/315:25 amIDA - LHR
1 stop21h 35mVirgin Atlantic
Deal found 12/29$908
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Fri 2/206:35 amLHR - BOI
2 stops34h 37mUnited Airlines
Mon 3/22:40 pmBOI - LHR
1 stop12h 00mUnited Airlines
Deal found 12/30$781
This TravelUp deal was found by Cheapflights users on 12/29. 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.
Thu 2/1210:45 amLHR - IDA
1 stop14h 04mVirgin Atlantic
Fri 2/275:25 amIDA - LHR
1 stop21h 35mVirgin Atlantic
Deal found 12/29$908
This United Airlines deal was found by Cheapflights users on 12/29. 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 2/66:30 amLHR - BOI
2 stops20h 21mUnited Airlines
Sun 2/85:16 pmBOI - LHR
1 stop33h 24mUnited Airlines
Deal found 12/29$794
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Mon 4/2010:35 amLHR - BOI
1 stop17h 40mUnited Airlines
Mon 4/272:37 pmBOI - LHR
1 stop14h 43mUnited Airlines
Deal found 12/29$801
This Flighttix deal was found by Cheapflights users on 12/29. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:00 pmLHR - JAC
2 stops22h 35mVirgin Atlantic
Tue 3/241:10 pmJAC - LHR
1 stop14h 50mVirgin Atlantic
Deal found 12/29$1,032
This United Airlines deal was found by Cheapflights users on 12/29. 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 2/2710:05 amLHR - BOI
1 stop18h 06mUnited Airlines
Mon 3/910:49 amBOI - LHR
1 stop14h 36mUnited Airlines
Deal found 12/29$813
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Thu 3/196:35 amLHR - BOI
2 stops20h 54mUnited Airlines
Sat 3/288:39 amBOI - LHR
1 stop22h 31mUnited Airlines
Deal found 12/30$819
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Fri 3/66:30 amLHR - SUN
2 stops22h 32mUnited Airlines
Tue 3/102:33 pmSUN - LHR
1 stop13h 07mUnited Airlines
Deal found 12/30$978
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Tue 3/177:30 amLHR - JAC
2 stops19h 24mUnited Airlines
Tue 3/2410:42 amJAC - LHR
1 stop16h 58mUnited Airlines
Deal found 12/29$979
This United Airlines deal was found by Cheapflights users on 12/28. 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 2/186:30 amLHR - IDA
2 stops34h 18mUnited Airlines
Sun 2/2210:45 amIDA - LHR
1 stop15h 55mUnited Airlines
Deal found 12/28$979
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Sat 2/2810:00 amLHR - JAC
2 stops17h 59mUnited Airlines
Tue 3/37:00 amJAC - LHR
2 stops17h 30mUnited Airlines
Deal found 12/29$1,010
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Thu 2/1211:35 amLHR - JAC
1 stop29h 16mUnited Airlines
Thu 2/192:13 pmJAC - LHR
1 stop13h 12mUnited Airlines
Deal found 12/29$1,010
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Thu 6/118:30 amLHR - JAC
2 stops33h 52mUnited Airlines
Thu 6/258:00 amJAC - LHR
1 stop19h 10mUnited Airlines
Deal found 12/29$1,133

Find flight deals from Heathrow to Idaho

Keep the following information in mind while searching for Heathrow to Idaho flight deals. Data was last updated December 31, 2025.

Round-trip from

$708
(United Airlines)

One-way from

$496
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,489
From London Heathrow to Idaho
Search Deals
One-way flight from London Heathrow to Idaho
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 31, 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

Thu 2/5

6:35 am-7:16 pm

2 stops20h 41m

Spokane

Sun 2/8

11:25 am-5:55 am

1 stop34h 30m

$707

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

6:35 am-9:03 pm

2 stops21h 28m

Spokane

Tue 3/17

5:00 am-9:40 am

1 stop21h 40m

$708

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 2/21

1:45 pm-9:07 pm

1 stop15h 22m

Spokane

Sat 3/7

7:02 am-7:25 am

1 stop16h 23m

$719

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 5/4

7:25 am-9:35 pm

2 stops22h 10m

Spokane

Sun 5/10

6:00 am-2:10 pm

1 stop24h 10m

$724

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 1/26

9:00 am-9:23 pm

2 stops19h 23m

Boise Air Term. Gowen Fld

Mon 2/2

10:48 am-11:15 am

2 stops17h 27m

$747

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 3/2

7:40 am-10:12 am

2 stops33h 32m

Boise Air Term. Gowen Fld

Mon 3/16

12:59 pm-7:25 am

1 stop36h 26m

$752

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/20

6:35 am-10:12 am

2 stops34h 37m

Boise Air Term. Gowen Fld

Mon 3/2

2:40 pm-9:40 am

1 stop12h 00m

$781

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/6

6:30 am-7:51 pm

2 stops20h 21m

Boise Air Term. Gowen Fld

Sun 2/8

5:16 pm-9:40 am

1 stop33h 24m

$794

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

10:35 am-9:15 pm

1 stop17h 40m

Boise Air Term. Gowen Fld

Mon 4/27

2:37 pm-12:20 pm

1 stop14h 43m

$801

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 2/27

10:05 am-9:11 pm

1 stop18h 06m

Boise Air Term. Gowen Fld

Mon 3/9

10:49 am-7:25 am

1 stop14h 36m

$813

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 46 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of $685). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of $955). 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.

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.

  • How long is the flight from London Heathrow Airport to Idaho?

    United Airlines, Virgin Atlantic, and American Airlines can get you from London Heathrow Airport to Idaho in just under 18h 34m. Your travel time can differ by up to 9h 33m. London Heathrow Airport and Idaho are separated by a distance of 4705 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 - Spokane, 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 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of $685). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of $955). 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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