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Cheap flights from the United Kingdom to Idaho Falls from $482

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 6/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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

Enter your travel dates to find the best prices.
American Airlines Logo
12:55 pm - 9:20 pm
LHR
-
IDA
15h 25m
1 stop
American Airlines Logo
2:08 pm - 2:25 pm
IDA
-
LHR
17h 17m
1 stop
$1,111American Airlines
Tue, Sep 1 - Fri, Sep 25
American Airlines Logo
8:55 am - 9:20 pm
LHR
-
IDA
19h 25m
1 stop
American Airlines Logo
12:15 pm - 10:55 am
IDA
-
LHR
15h 40m
1 stop
$1,113American Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
12:55 pm - 9:20 pm
LHR
-
IDA
15h 25m
1 stop
Multiple Airlines Logo
7:00 am - 10:55 am
IDA
-
LHR
20h 55m
1 stop
$1,118Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
12:55 pm - 9:20 pm
LHR
-
IDA
15h 25m
1 stop
Multiple Airlines Logo
7:00 am - 10:55 am
IDA
-
LHR
20h 55m
1 stop
$1,121Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:15 am - 6:20 pm
LHR
-
IDA
19h 05m
2 stops
Delta Logo
6:00 am - 10:00 am
IDA
-
LHR
21h 00m
1 stop
$1,133Delta
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:15 am - 6:20 pm
LHR
-
IDA
19h 05m
2 stops
Delta Logo
6:00 am - 10:00 am
IDA
-
LHR
21h 00m
1 stop
$1,134Delta
Tue, Sep 1 - Fri, Sep 25
Icelandair Logo
3:40 pm - 1:24 pm
LGW
-
IDA
52h 44m
2 stops
Icelandair Logo
2:01 pm - 2:40 pm
IDA
-
LGW
17h 39m
2 stops
$1,253Icelandair
Tue, Sep 1 - Fri, Sep 25
Icelandair Logo
1:00 pm - 10:56 pm
LGW
-
IDA
16h 56m
2 stops
Icelandair Logo
2:01 pm - 2:40 pm
IDA
-
LGW
17h 39m
2 stops
$1,281Icelandair
Tue, Sep 1 - Fri, Sep 25
United Airlines Logo
10:35 am - 9:50 am
MAN
-
IDA
30h 15m
2 stops
United Airlines Logo
5:53 pm - 6:30 am
IDA
-
MAN
53h 37m
2 stops
$1,523United Airlines
Thu, Jul 2 - Tue, Sep 1
United Airlines Logo
10:35 am - 3:23 pm
MAN
-
IDA
59h 48m
2 stops
United Airlines Logo
4:04 pm - 5:35 pm
IDA
-
MAN
42h 31m
2 stops
$1,591United Airlines
Thu, Sep 24 - Mon, Sep 28

Delta flights from United Kingdom to Idaho Falls

Our best Delta deals on United Kingdom to Idaho Falls flight tickets
Delta
Sep 1
LHR6:15 amLondon Heathrow
19h 05m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$1,133
Delta
Sep 1
LHR6:15 amLondon Heathrow
19h 05m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$1,134
Delta
Sep 1
LHR6:15 amLondon Heathrow
19h 05m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:57 pmIdaho Falls Fanning Field
18h 13m
2 stops
LHR8:10 pmLondon Heathrow
$1,140

Alaska Airlines flights from United Kingdom to Idaho Falls

Our best Alaska Airlines deals on United Kingdom to Idaho Falls flight tickets
Alaska Airlines
Sep 30
LHR5:00 pmLondon Heathrow
29h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Oct 4
IDA1:46 pmIdaho Falls Fanning Field
18h 19m
1 stop
LHR3:05 pmLondon Heathrow
$1,167
Alaska Airlines
Sep 30
LHR5:00 pmLondon Heathrow
29h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Oct 4
IDA1:46 pmIdaho Falls Fanning Field
18h 19m
1 stop
LHR3:05 pmLondon Heathrow
$1,168
Alaska Airlines
Jul 10
LHR5:00 pmLondon Heathrow
29h 37m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Aug 28
IDA2:01 pmIdaho Falls Fanning Field
18h 04m
1 stop
LHR3:05 pmLondon Heathrow
$1,213

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 June 6, 2026.
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

Cheapest round-trip
Quickest round-trip

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

12:55 pm-9:20 pm

1 stop15h 25m

Idaho Falls Fanning Field

Fri 9/25

2:08 pm-2:25 pm

1 stop17h 17m

$1,111

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

8:55 am-9:20 pm

1 stop19h 25m

Idaho Falls Fanning Field

Fri 9/25

12:15 pm-10:55 am

1 stop15h 40m

$1,113

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

12:55 pm-9:20 pm

1 stop15h 25m

Idaho Falls Fanning Field

Fri 9/25

7:00 am-10:55 am

1 stop20h 55m

$1,118

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

12:55 pm-9:20 pm

1 stop15h 25m

Idaho Falls Fanning Field

Fri 9/25

7:00 am-10:55 am

1 stop20h 55m

$1,121

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:20 pm

2 stops19h 05m

Idaho Falls Fanning Field

Fri 9/25

6:00 am-10:00 am

1 stop21h 00m

$1,133

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:20 pm

2 stops19h 05m

Idaho Falls Fanning Field

Fri 9/25

6:00 am-10:00 am

1 stop21h 00m

$1,134

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 9/1

3:40 pm-1:24 pm

2 stops52h 44m

Idaho Falls Fanning Field

Fri 9/25

2:01 pm-2:40 pm

2 stops17h 39m

$1,253

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 9/1

1:00 pm-10:56 pm

2 stops16h 56m

Idaho Falls Fanning Field

Fri 9/25

2:01 pm-2:40 pm

2 stops17h 39m

$1,281

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Thu 7/2

10:35 am-9:50 am

2 stops30h 15m

Idaho Falls Fanning Field

Tue 9/1

5:53 pm-6:30 am

2 stops53h 37m

$1,523

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Thu 9/24

10:35 am-3:23 pm

2 stops59h 48m

Idaho Falls Fanning Field

Mon 9/28

4:04 pm-5:35 pm

2 stops42h 31m

$1,591

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

Can stopping save me money on United Kingdom to Idaho Falls flights?

You could potentially save up to 3% on your flight if you consider stops on a United Kingdom to Idaho Falls flight.

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

Fastest flight time

19h 49m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 19h 49m
There are no direct flights from United Kingdom to Idaho Falls. There are no popular flight routes from United Kingdom to Idaho Falls.
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Frequently asked questions about flying from the United Kingdom to Idaho Falls

  • 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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