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Cheap flights from London to Idaho Falls from $1,024

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London to Idaho Falls departing on 9/1. 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 London to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
8:55 am - 9:20 pm
LHR
-
IDA
19h 25m
1 stop
Finnair Logo
2:08 pm - 10:15 am
IDA
-
LHR
37h 07m
2 stops
$1,024Finnair
Tue, Sep 1 - Fri, Sep 25
Finnair Logo
10:05 am - 9:20 pm
LHR
-
IDA
18h 15m
1 stop
Finnair Logo
7:00 am - 10:15 am
IDA
-
LHR
20h 15m
2 stops
$1,027Finnair
Tue, Sep 1 - Fri, Sep 25
Finnair Logo
4:25 pm - 11:30 am
LHR
-
IDA
26h 05m
1 stop
Finnair Logo
12:15 pm - 10:15 am
IDA
-
LHR
39h 00m
2 stops
$1,031Finnair
Tue, Sep 1 - Fri, Sep 25
Finnair Logo
10:30 am - 9:20 pm
LHR
-
IDA
17h 50m
2 stops
Finnair Logo
7:00 am - 10:15 am
IDA
-
LHR
20h 15m
2 stops
$1,049Finnair
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
$1,052Alaska Airlines
Tue, Sep 1 - Tue, Sep 8
Finnair Logo
9:15 am - 9:20 pm
LHR
-
IDA
19h 05m
2 stops
Finnair Logo
7:00 am - 10:15 am
IDA
-
LHR
20h 15m
2 stops
$1,054Finnair
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
$1,072Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Finnair Logo
8:55 am - 9:20 pm
LHR
-
IDA
19h 25m
1 stop
Finnair Logo
7:00 am - 10:30 am
IDA
-
LHR
20h 30m
2 stops
$1,089Finnair
Sat, Sep 19 - Sun, Sep 27
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
$1,110Alaska Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
9:25 pm - 10:56 pm
LHR
-
IDA
32h 31m
2 stops
Multiple Airlines Logo
6:18 am - 11:55 am
IDA
-
LHR
22h 37m
2 stops
$1,112Multiple Airlines
Tue, Sep 1 - Fri, Sep 25

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Virgin Atlantic flights from London to Idaho Falls

Our best Virgin Atlantic deals on London to Idaho Falls flight tickets
Virgin Atlantic
Aug 30
LHR10:55 amLondon Heathrow
14h 25m
1 stop
IDA6:20 pmIdaho Falls Fanning Field
Sep 5
IDA3:17 pmIdaho Falls Fanning Field
56h 58m
2 stops
LHR7:15 amLondon Heathrow
$1,201
Virgin Atlantic
Aug 30
LHR12:25 pmLondon Heathrow
17h 07m
2 stops
IDA10:32 pmIdaho Falls Fanning Field
Sep 5
IDA3:17 pmIdaho Falls Fanning Field
56h 58m
2 stops
LHR7:15 amLondon Heathrow
$1,208
Virgin Atlantic
Jul 28
LHR4:20 pmLondon Heathrow
32h 58m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
Aug 28
IDA3:17 pmIdaho Falls Fanning Field
32h 03m
2 stops
LHR6:20 amLondon Heathrow
$1,803

British Airways flights from London to Idaho Falls

Our best British Airways deals on London to Idaho Falls flight tickets
British Airways
Aug 30
LHR10:05 amLondon Heathrow
18h 38m
1 stop
IDA9:43 pmIdaho Falls Fanning Field
Sep 5
IDA2:20 pmIdaho Falls Fanning Field
35h 40m
1 stop
LHR9:00 amLondon Heathrow
$1,320
British Airways
Aug 30
LHR2:45 pmLondon Heathrow
30h 05m
1 stop
IDA1:50 pmIdaho Falls Fanning Field
Sep 5
IDA12:06 pmIdaho Falls Fanning Field
35h 14m
1 stop
LHR6:20 amLondon Heathrow
$1,327

momondo Fare Finder

 
Customize your flight search to find flights from London 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 July 22, 2026.
Use the filters below to find and compare flights from London 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

8:55 am-9:20 pm

1 stop19h 25m

Idaho Falls Fanning Field

Fri 9/25

2:08 pm-10:15 am

2 stops37h 07m

$1,024

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

10:05 am-9:20 pm

1 stop18h 15m

Idaho Falls Fanning Field

Fri 9/25

7:00 am-10:15 am

2 stops20h 15m

$1,027

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

4:25 pm-11:30 am

1 stop26h 05m

Idaho Falls Fanning Field

Fri 9/25

12:15 pm-10:15 am

2 stops39h 00m

$1,031
Quickest round-trip

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

10:30 am-9:20 pm

2 stops17h 50m

Idaho Falls Fanning Field

Fri 9/25

7:00 am-10:15 am

2 stops20h 15m

$1,049

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

5:00 pm-3:20 pm

1 stop29h 20m

Idaho Falls Fanning Field

Tue 9/8

6:18 am-3:05 pm

1 stop25h 47m

$1,052

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

9:15 am-9:20 pm

2 stops19h 05m

Idaho Falls Fanning Field

Fri 9/25

7:00 am-10:15 am

2 stops20h 15m

$1,054

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

$1,072

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 9/19

8:55 am-9:20 pm

1 stop19h 25m

Idaho Falls Fanning Field

Sun 9/27

7:00 am-10:30 am

2 stops20h 30m

$1,089

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

$1,110

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

6:18 am-11:55 am

2 stops22h 37m

$1,112

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Idaho Falls from

How to get the cheapest flight ticket from London 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 London to Idaho Falls flights?

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

When to book flights from London to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from London to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London to Idaho Falls (LON to IDA) flight deals and tips

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

Fastest flight time

14h 25m

Direct flights

None
The fastest flight from London to Idaho Falls takes 14h 25m
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
Search flight deals

Frequently asked questions about flying from London to Idaho Falls

  • How far is London to Idaho Falls Fanning Field by plane?

    There are 4715.6 mi between London and Idaho Falls Fanning Field. Typically, this will take 14h 25m by plane in normal conditions.

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

    Prices for flights from London to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Idaho Falls Fanning Field Airport.

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

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek 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 London to Idaho Falls?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Idaho Falls for you.

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

Yes. momondo allows you to filter the results for London to Idaho Falls flights to just show those with flexible booking policies.

How can momondo help me find flights from London 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 London.

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

Price alerts on flights to Idaho Falls from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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