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Cheap flights from the United Kingdom to Idaho Falls from $491

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Idaho Falls departing on 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United Kingdom to Idaho Falls

Recent round-trip flight deals from the United Kingdom to Idaho Falls

Multiple Airlines Logo
10:05 am - 9:49 pmLHR-IDA
17h 44m1 stop
Multiple Airlines Logo
1:58 pm - 11:40 amIDA-LHR
14h 42m1 stop
$807Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
2:25 pm - 10:34 pmLHR-IDA
15h 09m1 stop
American Airlines Logo
7:10 am - 9:30 amIDA-LHR
19h 20m2 stops
$809American Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
6:20 am - 6:17 pmLHR-IDA
18h 57m2 stops
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$817Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
6:20 am - 10:33 pmLHR-IDA
23h 13m2 stops
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$819Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
10:45 am - 6:17 pmLHR-IDA
14h 32m1 stop
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$830Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
10:45 am - 6:17 pmLHR-IDA
14h 32m1 stop
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$831Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
British Airways Logo
11:15 am - 12:41 pmLHR-IDA
31h 26m2 stops
British Airways Logo
7:10 am - 10:25 amIDA-LHR
20h 15m2 stops
$872British Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
11:10 am - 10:52 pmLHR-IDA
18h 42m2 stops
United Airlines Logo
5:00 am - 5:55 amIDA-LHR
17h 55m2 stops
$901United Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
United Airlines Logo
7:30 am - 9:03 pmLHR-IDA
19h 33m2 stops
United Airlines Logo
2:45 pm - 9:40 amIDA-LHR
11h 55m1 stop
$904United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
United Airlines Logo
11:35 am - 9:03 pmLHR-IDA
15h 28m1 stop
United Airlines Logo
10:50 am - 9:40 amIDA-LHR
15h 50m1 stop
$934United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5

Delta flights from United Kingdom to Idaho Falls

Our best Delta deals on United Kingdom to Idaho Falls flight tickets
Delta
Nov 22
LHR6:20 amLondon Heathrow
18h 57m
2 stops
IDA6:17 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$817
Find similar
Delta
Nov 22
LHR6:20 amLondon Heathrow
23h 13m
2 stops
IDA10:33 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$819
Find similar
Delta
Nov 22
LHR10:45 amLondon Heathrow
14h 32m
1 stop
IDA6:17 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$830
Find similar

United Airlines flights from United Kingdom to Idaho Falls

Our best United Airlines deals on United Kingdom to Idaho Falls flight tickets
United Airlines
Nov 22
LHR11:10 amLondon Heathrow
18h 42m
2 stops
IDA10:52 pmIdaho Falls Fanning Field
Nov 26
IDA5:00 amIdaho Falls Fanning Field
17h 55m
2 stops
LHR5:55 amLondon Heathrow
$901
Find similar
United Airlines
Oct 29
LHR7:30 amLondon Heathrow
19h 33m
2 stops
IDA9:03 pmIdaho Falls Fanning Field
Nov 5
IDA2:45 pmIdaho Falls Fanning Field
11h 55m
1 stop
LHR9:40 amLondon Heathrow
$904
Find similar
United Airlines
Oct 29
LHR11:35 amLondon Heathrow
15h 28m
1 stop
IDA9:03 pmIdaho Falls Fanning Field
Nov 5
IDA10:50 amIdaho Falls Fanning Field
15h 50m
1 stop
LHR9:40 amLondon Heathrow
$934
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from the United Kingdom to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 10/30

10:05 am-9:49 pm

1 stop17h 44m

Idaho Falls Fanning Field

Thu 11/6

1:58 pm-11:40 am

1 stop14h 42m

$807

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-9:30 am

2 stops19h 20m

$809

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

Sat 11/22

6:20 am-10:33 pm

2 stops23h 13m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$819

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:45 am-6:17 pm

1 stop14h 32m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$830

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:45 am-6:17 pm

1 stop14h 32m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$831

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 11/22

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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 10/29

7:30 am-9:03 pm

2 stops19h 33m

Idaho Falls Fanning Field

Wed 11/5

2:45 pm-9:40 am

1 stop11h 55m

$904

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 10/29

11:35 am-9:03 pm

1 stop15h 28m

Idaho Falls Fanning Field

Wed 11/5

10:50 am-9:40 am

1 stop15h 50m

$934

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from United Kingdom to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from United Kingdom to Idaho Falls Fanning Field?

American Airlines, Delta, and United Airlines are the most popular carriers operating from United Kingdom to Idaho Falls Fanning Field

Cheap United Kingdom to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Idaho Falls

Direct flights

None
There are no direct flights from United Kingdom to Idaho Falls. There are no popular flight routes from United Kingdom to Idaho Falls.
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Idaho Falls Fanning Field Airport?

    Prices for flights from United Kingdom to Idaho Falls Fanning Field Airport refresh daily.

  • How old do you have to be to fly from United Kingdom to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom to Idaho Falls?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from United Kingdom.

Can I find flights from United Kingdom to Idaho Falls with flexible booking policies on momondo?

momondo does allow users to show only those flights to Idaho Falls from United Kingdom which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from United Kingdom to Idaho Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from United Kingdom.

I’m not ready to book a flight from United Kingdom to Idaho Falls right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from United Kingdom and alert you when they change.

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