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Idaho Falls

$570+ Cheap flights from Heathrow (LHR) to Idaho Falls (IDA)

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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheap flight deals from Heathrow to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 16, 2025.

Round-trip from

$807
(Finnair)

One-way from

$570
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$1,019
From London Heathrow to Idaho Falls Fanning Field
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One-way flight from London Heathrow to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 18% potential increase in price ($248 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Heathrow to Idaho Falls

Cheapest flights from Heathrow to Idaho Falls
Explore the most affordable flight options available from Heathrow to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This Finnair deal was found by Cheapflights users on 9/15. 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.
jue. 10/3010:05 amLHR - IDA
1 stop17h 44mMultiple Airlines
jue. 11/61:58 pmIDA - LHR
1 stop14h 42mMultiple Airlines
Deal found 9/15$807
This American Airlines deal was found by Cheapflights users on 9/13. 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.
sáb. 11/222:25 pmLHR - IDA
1 stop15h 09mAmerican Airlines
mié. 11/267:10 amIDA - LHR
2 stops19h 20mAmerican Airlines
Deal found 9/13$809
This Delta deal was found by Cheapflights users on 9/14. 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.
sáb. 11/226:20 amLHR - IDA
2 stops18h 57mDelta
mié. 11/266:00 amIDA - LHR
1 stop21h 00mDelta
Deal found 9/14$817
This Flighttix deal was found by Cheapflights users on 9/15. 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.
jue. 10/3011:15 amLHR - IDA
2 stops31h 26mBritish Airways
jue. 11/67:10 amIDA - LHR
2 stops20h 15mBritish Airways
Deal found 9/15$872
This United Airlines deal was found by Cheapflights users on 9/14. 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.
sáb. 11/2211:10 amLHR - IDA
2 stops18h 42mUnited Airlines
mié. 11/265:00 amIDA - LHR
2 stops17h 55mUnited Airlines
Deal found 9/14$901
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mié. 10/297:30 amLHR - IDA
2 stops19h 33mUnited Airlines
mié. 11/52:45 pmIDA - LHR
1 stop11h 55mUnited Airlines
Deal found 9/14$904

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Idaho Falls 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 septiembre 16, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho Falls that are best for you.

Fly from

Heathrow

Fly to

Idaho Falls

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

sáb. 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

mié. 11/26

6:00 am-10:00 am

1 stop21h 00m

$817

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

sáb. 11/22

10:05 am-10:34 pm

2 stops19h 29m

Idaho Falls Fanning Field

mié. 11/26

7:10 am-8:00 pm

2 stops29h 50m

$819

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

jue. 10/30

11:15 am-12:41 pm

2 stops31h 26m

Idaho Falls Fanning Field

jue. 11/6

7:10 am-10:25 am

2 stops20h 15m

$872

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

sáb. 11/22

11:10 am-10:52 pm

2 stops18h 42m

Idaho Falls Fanning Field

mié. 11/26

5:00 am-5:55 am

2 stops17h 55m

$901

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mié. 10/29

7:30 am-9:03 pm

2 stops19h 33m

Idaho Falls Fanning Field

mié. 11/5

8:30 am-10:15 am

2 stops18h 45m

$904

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mar. 12/2

2:50 pm-11:29 am

2 stops27h 39m

$570

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

vie. 11/28

2:50 pm-12:02 am

3 stops40h 12m

$661

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mar. 11/25

10:45 am-10:19 pm

1 stop18h 34m

$670

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mié. 11/26

10:45 am-10:19 pm

1 stop18h 34m

$670

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mar. 12/2

2:20 pm-10:34 pm

1 stop15h 14m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 11 results
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Best time to book a flight from Heathrow to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls 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 Falls

What is the cheapest month to book a flight from London Heathrow Airport to Idaho Falls?

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho Falls (average of $380). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $578). 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 Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Idaho Falls from London Heathrow?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Idaho Falls. 0 airlines have flights to Fanning Field from London Heathrow on a regular basis. Booking flights from London Heathrow to Idaho Falls Fanning Field should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

    A quick flight from London Heathrow Airport to Idaho Falls can take about 18h 57m. Delta provides one of the quickest options available for as low as $817. London Heathrow Airport and Idaho Falls are separated by a distance of 4705 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Heathrow to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Heathrow to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Idaho Falls.

  • Can I find deals for business class flights from Heathrow to Idaho Falls?

    Yes. Cheapflights offers flight deals from Heathrow to Idaho Falls 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 Falls?

    Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho Falls (average of $380). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $578). 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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