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Idaho Falls

$491+ 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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$807
(Finnair)

One-way from

$491
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$1,043
From United Kingdom to Idaho Falls Fanning Field
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One-way flight from United Kingdom to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 6% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($27 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 United Kingdom to Idaho Falls

Cheapest flights from United Kingdom to Idaho Falls
Explore the most affordable flight options available from United Kingdom to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 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.
Thu 10/3010:05 amLHR - IDA
1 stop17h 44mMultiple Airlines
Thu 11/61:58 pmIDA - LHR
1 stop14h 42mMultiple Airlines
Deal found 9/15$807
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 11/222:25 pmLHR - IDA
1 stop15h 09mAmerican Airlines
Wed 11/267:10 amIDA - LHR
2 stops29h 50mAmerican Airlines
Deal found 9/16$814
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.
Sat 11/226:20 amLHR - IDA
2 stops18h 57mDelta
Wed 11/266:00 amIDA - LHR
1 stop21h 00mDelta
Deal found 9/14$817
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:45 amLHR - IDA
1 stop13h 28mDelta
Thu 11/66:00 amIDA - LHR
2 stops18h 05mDelta
Deal found 9/15$830
This Finnair deal was found by Cheapflights users on 9/17. 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.
Sat 11/111:55 amLHR - IDA
1 stop15h 53mMultiple Airlines
Sat 11/87:10 amIDA - LHR
1 stop23h 05mMultiple Airlines
Deal found 9/17$852
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.
Thu 10/3011:15 amLHR - IDA
2 stops31h 26mBritish Airways
Thu 11/67:10 amIDA - LHR
2 stops20h 15mBritish Airways
Deal found 9/15$872
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/110:10 amLHR - IDA
2 stops18h 05mDelta
Sat 11/86:00 amIDA - LHR
2 stops20h 05mDelta
Deal found 9/17$875
This Air France deal was found by Cheapflights users on 9/16. 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 11/226:20 amLHR - IDA
2 stops18h 57mAir France
Wed 11/266:00 amIDA - LHR
2 stops29h 20mAir France
Deal found 9/16$891
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.
Wed 11/51:30 pmMAN - IDA
2 stops39h 45mDelta
Sun 11/91:19 pmIDA - MAN
2 stops37h 51mDelta
Deal found 9/14$891

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 September 17, 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

Sat 11/22

2:25 pm-10:34 pm

1 stop15h 09m

Idaho Falls Fanning Field

Wed 11/26

7:10 am-8:00 pm

2 stops29h 50m

$814

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$817

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 10/30

11:15 am-12:41 pm

2 stops31h 26m

Idaho Falls Fanning Field

Thu 11/6

7:10 am-10:25 am

2 stops20h 15m

$872

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/1

10:10 am-10:15 pm

2 stops18h 05m

Idaho Falls Fanning Field

Sat 11/8

6:00 am-10:00 am

1 stop21h 00m

$875

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-6:20 pm

2 stops29h 20m

$891

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 11/5

1:30 pm-10:15 pm

2 stops39h 45m

Idaho Falls Fanning Field

Sun 11/9

1:19 pm-10:10 am

2 stops37h 51m

$891

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

11:10 am-10:52 pm

2 stops18h 42m

Idaho Falls Fanning Field

Wed 11/26

5:00 am-5:55 am

2 stops17h 55m

$901

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Tue 12/2

4:10 pm-3:49 pm

3 stops54h 39m

$491

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 12/2

4:35 pm-3:49 pm

3 stops54h 14m

$524

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 12/2

2:50 pm-11:29 am

2 stops27h 39m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 23 results
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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, October is the cheapest month in which you can book a flight from United Kingdom to Idaho Falls (average of $380). Flying from United Kingdom 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 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 Delta can get you from United Kingdom to Idaho Falls in just under 15h 09m. Your travel time can differ by up to 3h 48m. 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, October is the cheapest month in which you can book a flight from United Kingdom to Idaho Falls (average of $380). Flying from United Kingdom 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

Traveling to a place near Idaho Falls?

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Rexburg

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