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Cheap flights from London to Idaho Falls from $963

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 5/13. 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 London to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:25 pm - 10:53 pm
LHR
-
IDA
32h 28m
2 stops
Multiple Airlines Logo
6:00 am - 11:55 am
IDA
-
LHR
46h 55m
2 stops
$963Multiple Airlines
Wed, May 13 - Thu, May 21
Multiple Airlines Logo
1:05 pm - 10:56 pm
LHR
-
IDA
16h 51m
2 stops
Multiple Airlines Logo
6:18 am - 11:55 am
IDA
-
LHR
22h 37m
2 stops
$1,043Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
1:05 pm - 10:56 pm
LHR
-
IDA
16h 51m
2 stops
Multiple Airlines Logo
1:45 pm - 8:20 pm
IDA
-
LHR
23h 35m
2 stops
$1,094Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
1:00 pm - 10:56 pm
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
1:45 pm - 2:40 pm
IDA
-
LGW
17h 55m
2 stops
$1,094Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
1:05 pm - 10:56 pm
LHR
-
IDA
16h 51m
2 stops
Multiple Airlines Logo
6:18 am - 11:55 am
IDA
-
LHR
22h 37m
2 stops
$1,095Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
11:40 am - 3:26 pm
LHR
-
IDA
34h 46m
1 stop
Multiple Airlines Logo
6:00 am - 10:00 am
IDA
-
LHR
45h 00m
2 stops
$1,102Multiple Airlines
Wed, May 13 - Thu, May 21
Multiple Airlines Logo
11:40 am - 3:26 pm
LHR
-
IDA
34h 46m
1 stop
Multiple Airlines Logo
6:00 am - 3:35 pm
IDA
-
LHR
26h 35m
1 stop
$1,104Multiple Airlines
Wed, May 13 - Thu, May 21
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
$1,114Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Multiple Airlines Logo
1:05 pm - 10:56 pm
LHR
-
IDA
16h 51m
2 stops
Multiple Airlines Logo
1:45 pm - 8:20 pm
IDA
-
LHR
23h 35m
2 stops
$1,115Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Delta Logo
6:15 am - 6:14 pm
LHR
-
IDA
18h 59m
2 stops
Delta Logo
1:10 pm - 10:00 am
IDA
-
LHR
13h 50m
1 stop
$1,130Delta
Tue, Sep 1 - Fri, Sep 25

Virgin Atlantic flights from London to Idaho Falls

Our best Virgin Atlantic deals on London to Idaho Falls flight tickets
Virgin Atlantic
Jun 9
LHR10:55 amLondon Heathrow
14h 23m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
Jun 16
IDA11:28 amIdaho Falls Fanning Field
17h 37m
2 stops
LHR12:05 pmLondon Heathrow
$1,158
Virgin Atlantic
May 27
LHR10:55 amLondon Heathrow
18h 47m
1 stop
IDA10:42 pmIdaho Falls Fanning Field
Jun 3
IDA3:16 pmIdaho Falls Fanning Field
17h 19m
2 stops
LHR3:35 pmLondon Heathrow
$1,163
Virgin Atlantic
May 27
LHR11:40 amLondon Heathrow
18h 02m
2 stops
IDA10:42 pmIdaho Falls Fanning Field
Jun 3
IDA3:16 pmIdaho Falls Fanning Field
17h 19m
2 stops
LHR3:35 pmLondon Heathrow
$1,172

Delta flights from London to Idaho Falls

Our best Delta deals on London to Idaho Falls flight tickets
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
$1,130
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
$1,132
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
$1,134

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 April 13, 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

Wed 5/13

9:25 pm-10:53 pm

2 stops32h 28m

Idaho Falls Fanning Field

Thu 5/21

6:00 am-11:55 am

2 stops46h 55m

$963

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops16h 51m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-11:55 am

2 stops22h 37m

$1,043

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops16h 51m

Idaho Falls Fanning Field

Fri 9/25

1:45 pm-8:20 pm

2 stops23h 35m

$1,094

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

1:45 pm-2:40 pm

2 stops17h 55m

$1,094

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops16h 51m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-11:55 am

2 stops22h 37m

$1,095

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 5/13

11:40 am-3:26 pm

1 stop34h 46m

Idaho Falls Fanning Field

Thu 5/21

6:00 am-10:00 am

2 stops45h 00m

$1,102

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 5/13

11:40 am-3:26 pm

1 stop34h 46m

Idaho Falls Fanning Field

Thu 5/21

6:00 am-3:35 pm

1 stop26h 35m

$1,104

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

$1,114

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops16h 51m

Idaho Falls Fanning Field

Fri 9/25

1:45 pm-8:20 pm

2 stops23h 35m

$1,115
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

1:10 pm-10:00 am

1 stop13h 50m

$1,130

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 21% 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

16h 51m

Direct flights

None
The fastest flight from London to Idaho Falls takes 16h 51m
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 16h 51m 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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