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Cheap flights from the United Kingdom to Idaho Falls from $709

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 9/11. 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

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.
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
2:01 pm - 3:05 pm
IDA
-
LHR
18h 04m
1 stop
$1,034Alaska Airlines
Tue, Sep 15 - Tue, Sep 22
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
6:18 am - 3:05 pm
IDA
-
LHR
25h 47m
1 stop
$1,079Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Virgin Atlantic Logo
10:45 am - 10:22 pm
LHR
-
IDA
18h 37m
2 stops
Virgin Atlantic Logo
1:05 pm - 3:35 pm
IDA
-
LHR
19h 30m
2 stops
$1,080Virgin Atlantic
Tue, Sep 15 - Tue, Sep 22
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
2:01 pm - 3:05 pm
IDA
-
LHR
18h 04m
1 stop
$1,085Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
6:18 am - 3:05 pm
IDA
-
LHR
25h 47m
1 stop
$1,091Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
2:01 pm - 3:05 pm
IDA
-
LHR
18h 04m
1 stop
$1,092Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Alaska Airlines Logo
5:00 pm - 3:20 pm
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
6:18 am - 3:05 pm
IDA
-
LHR
25h 47m
1 stop
$1,099Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:30 am - 6:20 pm
LHR
-
IDA
18h 50m
2 stops
Delta Logo
6:57 pm - 8:10 pm
IDA
-
LHR
18h 13m
2 stops
$1,122Delta
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:30 am - 6:20 pm
LHR
-
IDA
18h 50m
2 stops
Delta Logo
6:57 pm - 8:10 pm
IDA
-
LHR
18h 13m
2 stops
$1,137Delta
Tue, Sep 1 - Fri, Sep 25
Delta Logo
10:55 am - 10:32 pm
LHR
-
IDA
18h 37m
1 stop
Delta Logo
6:57 pm - 8:10 pm
IDA
-
LHR
18h 13m
2 stops
$1,140Delta
Tue, Sep 1 - Fri, Sep 25

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Delta flights from United Kingdom to Idaho Falls

Our best Delta deals on United Kingdom to Idaho Falls flight tickets
Delta
Sep 1
LHR6:30 amLondon Heathrow
18h 50m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:57 pmIdaho Falls Fanning Field
18h 13m
2 stops
LHR8:10 pmLondon Heathrow
$1,122
Delta
Sep 1
LHR6:30 amLondon Heathrow
18h 50m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:57 pmIdaho Falls Fanning Field
18h 13m
2 stops
LHR8:10 pmLondon Heathrow
$1,137
Delta
Sep 1
LHR10:55 amLondon Heathrow
18h 37m
1 stop
IDA10:32 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 15
LHR5:00 pmLondon Heathrow
29h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Sep 22
IDA2:01 pmIdaho Falls Fanning Field
18h 04m
1 stop
LHR3:05 pmLondon Heathrow
$1,034
Alaska Airlines
Sep 1
LHR5:00 pmLondon Heathrow
29h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Sep 25
IDA6:18 amIdaho Falls Fanning Field
25h 47m
1 stop
LHR3:05 pmLondon Heathrow
$1,079
Alaska Airlines
Sep 1
LHR5:00 pmLondon Heathrow
29h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Sep 25
IDA2:01 pmIdaho Falls Fanning Field
18h 04m
1 stop
LHR3:05 pmLondon Heathrow
$1,085

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 August 3, 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 9/15

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Tue 9/22

2:01 pm-3:05 pm

1 stop18h 04m

$1,034

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-3:05 pm

1 stop25h 47m

$1,079

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/15

10:45 am-10:22 pm

2 stops18h 37m

Idaho Falls Fanning Field

Tue 9/22

1:05 pm-3:35 pm

2 stops19h 30m

$1,080

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/25

2:01 pm-3:05 pm

1 stop18h 04m

$1,085

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-3:05 pm

1 stop25h 47m

$1,091

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/25

2:01 pm-3:05 pm

1 stop18h 04m

$1,092

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-3:05 pm

1 stop25h 47m

$1,099

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:30 am-6:20 pm

2 stops18h 50m

Idaho Falls Fanning Field

Fri 9/25

6:57 pm-8:10 pm

2 stops18h 13m

$1,122

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:30 am-6:20 pm

2 stops18h 50m

Idaho Falls Fanning Field

Fri 9/25

6:57 pm-8:10 pm

2 stops18h 13m

$1,137
Quickest round-trip

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

10:55 am-10:32 pm

1 stop18h 37m

Idaho Falls Fanning Field

Fri 9/25

6:57 pm-8:10 pm

2 stops18h 13m

$1,140

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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

18h 22m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 18h 22m
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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