HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$481+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 8, 2026.

Round-trip from

$701
(The Travel House)

One-way from

$481
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$776
From London Heathrow to Idaho
Search Deals
One-way flight from London Heathrow to Idaho
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 8, 2026.

This The Travel House deal was found by Cheapflights users on 1/8. 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.
Tue 3/108:20 amLHR - GEG
2 stops21h 54mFinnair
Tue 3/176:00 amGEG - LHR
2 stops17h 15mFinnair
Deal found 1/8$701
This The Travel House deal was found by Cheapflights users on 1/7. 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.
Tue 3/102:10 pmLHR - GEG
2 stops30h 38mIberia
Tue 3/176:00 amGEG - LHR
2 stops17h 15mIberia
Deal found 1/7$702
This United Airlines deal was found by Cheapflights users on 1/7. 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 2/85:00 amGEG - LHR
2 stops16h 55mUnited Airlines
Deal found 1/7$707
This The Travel House deal was found by Cheapflights users on 1/7. 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.
Mon 5/42:45 pmLHR - GEG
1 stop29h 57mFinnair
Sun 5/101:33 pmGEG - LHR
2 stops32h 42mFinnair
Deal found 1/7$714
This Expedia deal was found by Cheapflights users on 1/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/247:30 pmLHR - GEG
2 stops31h 46mLufthansa
Tue 2/106:53 amGEG - LHR
1 stop16h 32mLufthansa
Deal found 1/7$730
This Netflights deal was found by Cheapflights users on 1/8. 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 3/102:30 pmLHR - GEG
1 stop15h 03mVirgin Atlantic
Tue 3/173:25 pmGEG - LHR
1 stop12h 05mVirgin Atlantic
Deal found 1/8$734
This Trip.com deal was found by Cheapflights users on 1/7. 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.
Fri 9/256:30 amLHR - BOI
2 stops23h 25mMultiple Airlines
Mon 9/288:18 amBOI - LHR
1 stop23h 42mMultiple Airlines
Deal found 1/7$738
This United Airlines deal was found by Cheapflights users on 1/7. 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 2/2110:00 amLHR - GEG
2 stops19h 17mUnited Airlines
Sat 2/287:00 amGEG - LHR
1 stop16h 55mUnited Airlines
Deal found 1/7$743
This Cheapflightsfares deal was found by Cheapflights users on 1/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/37:40 amLHR - BOI
2 stops17h 27mLufthansa
Tue 2/108:15 amBOI - LHR
2 stops21h 45mLufthansa
Deal found 1/6$746
This United Airlines deal was found by Cheapflights users on 1/6. 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 2/39:00 amLHR - BOI
2 stops19h 23mUnited Airlines
Tue 2/1010:28 amBOI - LHR
1 stop16h 12mUnited Airlines
Deal found 1/6$747
This Trip.com deal was found by Cheapflights users on 1/7. 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.
Fri 9/189:55 amLHR - BOI
1 stop20h 00mMultiple Airlines
Tue 9/226:51 pmBOI - LHR
2 stops18h 19mMultiple Airlines
Deal found 1/7$754
This United Airlines deal was found by Cheapflights users on 1/7. 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 3/211:10 amLHR - BOI
2 stops37h 35mUnited Airlines
Mon 3/1612:59 pmBOI - LHR
1 stop17h 01mUnited Airlines
Deal found 1/7$755

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 January 8, 2026.
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 3/10

12:35 pm-11:44 am

1 stop30h 09m

Spokane

Tue 3/17

6:00 am-6:15 am

2 stops17h 15m

$701

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

2:10 pm-1:48 pm

2 stops30h 38m

Spokane

Tue 3/17

6:00 am-6:15 am

2 stops17h 15m

$702

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-7:55 am

1 stop12h 30m

$707

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 1/24

7:30 pm-7:16 pm

2 stops31h 46m

Spokane

Tue 2/10

6:53 am-12:50 pm

2 stops21h 57m

$736

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 5/4

12:55 pm-4:55 pm

1 stop36h 00m

Spokane

Sun 5/10

1:33 pm-7:40 am

1 stop34h 07m

$740

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 3/2

11:10 am-5:45 pm

2 stops37h 35m

Boise Air Term. Gowen Fld

Mon 3/16

12:59 pm-12:00 pm

1 stop17h 01m

$755

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 2/10

6:30 am-10:57 pm

2 stops23h 27m

Boise Air Term. Gowen Fld

Tue 2/24

12:16 pm-7:55 am

1 stop12h 39m

$756

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 2/3

11:35 am-6:07 pm

1 stop13h 32m

Boise Air Term. Gowen Fld

Tue 2/10

12:19 pm-7:55 am

1 stop12h 36m

$766

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 2/9

11:35 am-6:07 pm

1 stop13h 32m

Boise Air Term. Gowen Fld

Tue 2/24

2:40 pm-9:40 am

1 stop12h 00m

$768

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

7:25 am-10:35 pm

2 stops22h 10m

Boise Air Term. Gowen Fld

Mon 4/27

5:00 am-7:40 am

2 stops19h 40m

$768

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 50 results
1
2
3
...
5

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 $682). 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?

    Finnair, Iberia, and United Airlines can get you from London Heathrow Airport to Idaho in just under 20h 41m. Your travel time can differ by up to 9h 57m. 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 - Jackson Hole, 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 $682). 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

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.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Stansted to John F Kennedy Intl flights
London City to Newark flights
Luton to John F Kennedy Intl flights
Luton to Newark flights
Heathrow to Miami flights
Stansted to Newark flights
Heathrow to Los Angeles flights
Heathrow to Orlando flights
Heathrow to San Francisco flights
Heathrow to Boston flights
Heathrow to Las Vegas flights
Heathrow to Dallas/Fort Worth flights
Heathrow to Dulles Intl flights
Gatwick to Orlando flights
Heathrow to O'Hare Intl flights
Heathrow to Seattle flights
Gatwick to Miami flights
London City to Miami flights
Gatwick to Boston flights
Heathrow to Baltimore flights
Gatwick to Los Angeles flights
Stansted to Miami flights
Heathrow to Hobby flights
Heathrow to Atlanta flights
Heathrow to Tampa flights
Stansted to Los Angeles flights
London City to Los Angeles flights
Heathrow to George Bush Intcntl flights
Luton to Miami flights
Heathrow to Denver flights
Heathrow to Ontario flights
Heathrow to Fort Lauderdale flights
London City to San Francisco flights
Stansted to Boston flights
Gatwick to San Francisco flights
Stansted to San Francisco flights
Heathrow to Austin flights
Stansted to Orlando flights
London City to Boston flights
Gatwick to Las Vegas flights
Gatwick to Dallas/Fort Worth flights
Heathrow to Philadelphia flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.