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$580+ Cheap flights from Heathrow (LHR) to Idaho

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
ene. 22 — ene. 291
jue. 1/22
jue. 1/29
1 adult, Economy
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Cheap 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 diciembre 23, 2025.

This Delta deal was found by Cheapflights users on 12/21. 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.
mié. 12/246:20 amLHR - SUN
2 stops23h 00mDelta
vie. 1/97:25 amSUN - LHR
2 stops19h 50mDelta
Deal found 12/21$1,628
This British Airways deal was found by Cheapflights users on 12/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/243:45 pmLHR - SUN
1 stop27h 54mMultiple Airlines
vie. 1/98:09 amSUN - LHR
1 stop22h 06mMultiple Airlines
Deal found 12/21$1,640
This Delta deal was found by Cheapflights users on 12/20. 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.
dom. 12/2110:45 amLHR - SUN
1 stop14h 17mDelta
mié. 2/187:25 amSUN - LHR
2 stops18h 20mDelta
Deal found 12/20$1,870
This American Airlines deal was found by Cheapflights users on 12/20. 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.
dom. 12/217:10 pmLHR - SUN
2 stops24h 26mAmerican Airlines
mié. 2/187:46 amSUN - LHR
2 stops16h 34mAmerican Airlines
Deal found 12/20$1,884

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 diciembre 23, 2025.

Round-trip from

$580
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,489
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
Search Deals

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 diciembre 23, 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

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

mié. 2/4

6:35 am-11:01 pm

2 stops23h 26m

Boise Air Term. Gowen Fld

mié. 2/11

6:23 am-11:50 am

2 stops22h 27m

$580

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mié. 2/11

8:20 am-10:26 am

2 stops34h 06m

Spokane

dom. 3/1

1:55 pm-6:15 am

2 stops32h 20m

$718

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun. 2/9

10:35 am-6:49 pm

1 stop16h 14m

Spokane

dom. 3/1

1:55 pm-6:15 am

2 stops32h 20m

$718

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/10

6:35 am-9:18 pm

2 stops21h 43m

Spokane

mar. 3/17

12:42 pm-1:30 pm

2 stops17h 48m

$724

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mié. 2/4

6:35 am-9:22 pm

2 stops22h 47m

Spokane

mié. 2/11

5:00 am-8:25 am

2 stops19h 25m

$725

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

jue. 2/12

7:40 am-9:07 pm

2 stops21h 27m

Spokane

vie. 2/27

12:38 pm-1:30 pm

2 stops16h 52m

$725

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/10

6:35 am-9:18 pm

2 stops21h 43m

Spokane

mar. 3/17

1:37 pm-9:40 am

1 stop13h 03m

$725

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mié. 2/11

8:30 am-9:50 pm

2 stops21h 20m

Spokane

sáb. 2/28

7:00 am-5:55 am

1 stop14h 55m

$726

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/10

12:20 pm-10:28 pm

1 stop17h 08m

Spokane

mar. 3/17

1:40 pm-10:30 am

1 stop13h 50m

$728

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

mar. 1/20

11:35 am-6:07 pm

1 stop13h 32m

Boise Air Term. Gowen Fld

mar. 1/27

12:19 pm-7:55 am

1 stop12h 36m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 41 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.

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

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?

    American Airlines, Lufthansa, and United Airlines can get you from London Heathrow Airport to Idaho in just under 21h 43m. Your travel time can differ by up to 12h 23m. London Heathrow Airport and Idaho are separated by a distance of 4643 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 - Spokane or London Heathrow - Hailey Sun Valley-Friedman, 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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