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Cheap flights from the United Kingdom to Idaho Falls from $905

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 6/3. 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
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.
Multiple Airlines Logo
9:25 pm - 10:56 pm
LHR
-
IDA
32h 31m
2 stops
Multiple Airlines Logo
1:45 pm - 8:20 pm
IDA
-
LHR
23h 35m
2 stops
$1,047Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Icelandair Logo
1:05 pm - 10:56 pm
LHR
-
IDA
40h 51m
2 stops
Icelandair Logo
6:18 am - 8:20 pm
IDA
-
LHR
31h 02m
2 stops
$1,079Icelandair
Tue, Sep 1 - Fri, Sep 25
Icelandair Logo
1:05 pm - 10:56 pm
LHR
-
IDA
40h 51m
2 stops
Icelandair Logo
1:45 pm - 8:20 pm
IDA
-
LHR
23h 35m
2 stops
$1,086Icelandair
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
1:00 pm - 10:56 pm
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
6:18 am - 2:40 pm
IDA
-
LGW
25h 22m
2 stops
$1,096Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Alaska Airlines Logo
5:00 pm - 3:37 pm
LHR
-
IDA
29h 37m
1 stop
Alaska Airlines Logo
1:43 pm - 3:05 pm
IDA
-
LHR
18h 22m
1 stop
$1,128Alaska Airlines
Tue, Jun 9 - Tue, Jun 16
Alaska Airlines Logo
5:00 pm - 3:37 pm
LHR
-
IDA
29h 37m
1 stop
Alaska Airlines Logo
7:15 am - 3:05 pm
IDA
-
LHR
24h 50m
1 stop
$1,133Alaska Airlines
Tue, Jun 9 - Tue, Jun 16
Delta Logo
6:15 am - 6:14 pm
LHR
-
IDA
18h 59m
2 stops
Delta Logo
6:10 am - 10:00 am
IDA
-
LHR
20h 50m
1 stop
$1,138Delta
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:15 am - 6:14 pm
LHR
-
IDA
18h 59m
2 stops
Delta Logo
6:10 am - 10:00 am
IDA
-
LHR
20h 50m
1 stop
$1,139Delta
Tue, Sep 1 - Fri, Sep 25
United Airlines Logo
9:00 am - 9:53 am
MAN
-
IDA
55h 53m
2 stops
United Airlines Logo
4:04 pm - 5:10 pm
IDA
-
MAN
42h 06m
2 stops
$1,497United Airlines
Wed, Oct 14 - Sun, Oct 18
United Airlines Logo
9:00 am - 5:16 pm
MAN
-
IDA
39h 16m
2 stops
United Airlines Logo
4:04 pm - 5:10 pm
IDA
-
MAN
42h 06m
2 stops
$1,498United Airlines
Wed, Oct 14 - Sun, Oct 18

Alaska Airlines flights from United Kingdom to Idaho Falls

Our best Alaska Airlines deals on United Kingdom to Idaho Falls flight tickets
Alaska Airlines
Jun 9
LHR5:00 pmLondon Heathrow
29h 37m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jun 16
IDA1:43 pmIdaho Falls Fanning Field
18h 22m
1 stop
LHR3:05 pmLondon Heathrow
$1,128
Alaska Airlines
Jun 9
LHR5:00 pmLondon Heathrow
29h 37m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jun 16
IDA7:15 amIdaho Falls Fanning Field
24h 50m
1 stop
LHR3:05 pmLondon Heathrow
$1,133
Alaska Airlines
Jun 9
LHR5:00 pmLondon Heathrow
29h 37m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jun 16
IDA7:15 amIdaho Falls Fanning Field
24h 50m
1 stop
LHR3:05 pmLondon Heathrow
$1,205

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
18h 59m
2 stops
IDA6:14 pmIdaho Falls Fanning Field
Sep 25
IDA6:10 amIdaho Falls Fanning Field
20h 50m
1 stop
LHR10:00 amLondon Heathrow
$1,138
Delta
Sep 1
LHR6:15 amLondon Heathrow
18h 59m
2 stops
IDA6:14 pmIdaho Falls Fanning Field
Sep 25
IDA6:10 amIdaho Falls Fanning Field
20h 50m
1 stop
LHR10:00 amLondon Heathrow
$1,139
Delta
Sep 1
LHR6:15 amLondon Heathrow
18h 59m
2 stops
IDA6:14 pmIdaho Falls Fanning Field
Sep 25
IDA1:10 pmIdaho Falls Fanning Field
13h 50m
1 stop
LHR10:00 amLondon Heathrow
$1,140

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 April 19, 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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

9:25 pm-10:56 pm

2 stops32h 31m

Idaho Falls Fanning Field

Fri 9/25

1:45 pm-8:20 pm

2 stops23h 35m

$1,047

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops40h 51m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-8:20 pm

2 stops31h 02m

$1,079

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops40h 51m

Idaho Falls Fanning Field

Fri 9/25

1:45 pm-8:20 pm

2 stops23h 35m

$1,086

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

6:18 am-2:40 pm

2 stops25h 22m

$1,096

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 6/9

5:00 pm-3:37 pm

1 stop29h 37m

Idaho Falls Fanning Field

Tue 6/16

1:43 pm-3:05 pm

1 stop18h 22m

$1,128

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 6/9

5:00 pm-3:37 pm

1 stop29h 37m

Idaho Falls Fanning Field

Tue 6/16

7:15 am-3:05 pm

1 stop24h 50m

$1,133
Quickest round-trip

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:14 pm

2 stops18h 59m

Idaho Falls Fanning Field

Fri 9/25

6:10 am-10:00 am

1 stop20h 50m

$1,138

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:14 pm

2 stops18h 59m

Idaho Falls Fanning Field

Fri 9/25

6:10 am-10:00 am

1 stop20h 50m

$1,139

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 10/14

9:00 am-9:53 am

2 stops55h 53m

Idaho Falls Fanning Field

Sun 10/18

4:04 pm-5:10 pm

2 stops42h 06m

$1,497

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 10/14

9:00 am-5:16 pm

2 stops39h 16m

Idaho Falls Fanning Field

Sun 10/18

4:04 pm-5:10 pm

2 stops42h 06m

$1,498

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 21% 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

16h 56m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 16h 56m
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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