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Idaho Falls

$555+ Cheap flights from the United Kingdom 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from United Kingdom to Idaho Falls

Best flights from United Kingdom to Idaho Falls
Discover carefully curated flight deals from United Kingdom to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Finnair deal was found by Cheapflights users on 12/17. 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.
Sun 2/14:30 pmLHR - IDA
1 stop28h 07mMultiple Airlines
Sun 2/87:20 amIDA - LHR
1 stop22h 55mMultiple Airlines
Deal found 12/17$938
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 2/14:30 pmLHR - IDA
1 stop28h 07mAmerican Airlines
Sun 2/87:20 amIDA - LHR
2 stops17h 30mAmerican Airlines
Deal found 12/17$966
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 4/297:00 amMAN - IDA
2 stops33h 28mUnited Airlines
Sun 5/32:35 pmIDA - MAN
2 stops43h 45mUnited Airlines
Deal found 12/14$1,282
This Expedia deal was found by Cheapflights users on 12/17. 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.
Sun 2/111:55 amLGW - IDA
2 stops18h 04mMultiple Airlines
Sun 2/86:58 pmIDA - LGW
2 stops32h 57mMultiple Airlines
Deal found 12/17$1,083

Find flight deals from United Kingdom to Idaho Falls

Keep the following information in mind while searching for United Kingdom to Idaho Falls flight deals. Data was last updated December 18, 2025.

Round-trip from

$1,083
(Expedia)

One-way from

$555
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$889
From United Kingdom to Idaho Falls Fanning Field
Search Deals
One-way flight from United Kingdom to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 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 United Kingdom 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 December 18, 2025.
Use the filters below to find and compare flights from the United Kingdom to Idaho Falls that are best for you.

Fly from

United Kingdom

Fly to

Idaho Falls

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 2/1

4:30 pm-1:37 pm

1 stop28h 07m

Idaho Falls Fanning Field

Sun 2/8

7:20 am-1:15 pm

1 stop22h 55m

$938

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 2/1

4:30 pm-1:37 pm

1 stop28h 07m

Idaho Falls Fanning Field

Sun 2/8

7:20 am-7:50 am

2 stops17h 30m

$966

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sun 2/1

11:55 am-10:59 pm

2 stops18h 04m

Idaho Falls Fanning Field

Sun 2/8

6:58 pm-10:55 am

2 stops32h 57m

$1,083

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 4/29

7:00 am-9:28 am

2 stops33h 28m

Idaho Falls Fanning Field

Sun 5/3

2:35 pm-5:20 pm

2 stops43h 45m

$1,282

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 4/21

7:20 am-3:20 pm

3 stops39h 00m

$555

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 4/21

10:05 am-9:56 pm

1 stop18h 51m

$656

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 4/21

6:15 am-6:14 pm

2 stops18h 59m

$672

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 6/5

8:20 am-9:05 pm

1 stop19h 45m

$825

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 6/5

9:55 am-10:14 pm

2 stops19h 19m

$835

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Best time to book a flight from United Kingdom to Idaho Falls

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

What is the cheapest month to book a flight from United Kingdom to Idaho Falls?

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Idaho Falls (average of $820). Flying from United Kingdom to Idaho Falls in October is currently the most expensive (average of $1,178). 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 United Kingdom 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 United Kingdom?

    Most people fly into Idaho Falls Fanning Field (IDA) if they book a flight to Idaho Falls from United Kingdom. Fanning Field is conveniently located just 3.8 mi from Idaho Falls’s city center.

  • How long is the flight from United Kingdom to Idaho Falls?

    American Airlines and United Airlines can get you from United Kingdom to Idaho Falls in just under 28h 07m. Your travel time can differ by up to 5h 21m. United Kingdom 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.

  • What are the most popular routes from United Kingdom to Idaho Falls?

    The most popular flight routes from United Kingdom to Idaho Falls are London Heathrow - Idaho Falls Fanning Field, London Gatwick - Idaho Falls Fanning Field and Manchester - Idaho Falls Fanning Field.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Idaho Falls?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to Idaho Falls (average of $820). Flying from United Kingdom to Idaho Falls in October is currently the most expensive (average of $1,178). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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