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Cheap flights from London Heathrow Airport to Idaho Falls from $755

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Idaho Falls departing on 10/19. 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 Heathrow Airport to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
9:25 pm - 10:56 pm
LHR
-
IDA
32h 31m
2 stops
Icelandair Logo
6:18 am - 11:55 am
IDA
-
LHR
22h 37m
2 stops
$1,074Icelandair
Tue, Sep 1 - Fri, Sep 25
Icelandair Logo
9:25 pm - 10:56 pm
LHR
-
IDA
32h 31m
2 stops
Icelandair Logo
6:18 am - 11:55 am
IDA
-
LHR
22h 37m
2 stops
$1,075Icelandair
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
$1,104Multiple 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
$1,128Multiple 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
$1,146Multiple 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
12:12 pm - 10:55 am
IDA
-
LHR
15h 43m
1 stop
$1,151Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Alaska Airlines Logo
2:45 pm - 10:39 pm
LHR
-
IDA
14h 54m
1 stop
Alaska Airlines Logo
6:15 am - 12:20 pm
IDA
-
LHR
23h 05m
1 stop
$1,155Alaska Airlines
Thu, Nov 5 - Mon, Nov 9
Multiple Airlines Logo
12:55 pm - 9:20 pm
LHR
-
IDA
15h 25m
1 stop
Multiple Airlines Logo
2:20 pm - 10:55 am
IDA
-
LHR
13h 35m
1 stop
$1,158Multiple Airlines
Tue, Sep 1 - Fri, Sep 25
Finnair Logo
10:05 am - 9:20 pm
LHR
-
IDA
18h 15m
1 stop
Finnair Logo
1:44 pm - 12:15 pm
IDA
-
LHR
15h 31m
1 stop
$1,163Finnair
Tue, Sep 1 - Fri, Sep 25
Iberia Logo
12:55 pm - 9:20 pm
LHR
-
IDA
15h 25m
1 stop
Iberia Logo
7:00 am - 6:25 am
IDA
-
LHR
16h 25m
2 stops
$1,167Iberia
Tue, Sep 1 - Fri, Sep 25

American Airlines flights from London Heathrow Airport to Idaho Falls

Our best American Airlines deals on London Heathrow Airport to Idaho Falls flight tickets
American Airlines
Jun 10
LHR10:30 amLondon Heathrow
18h 45m
2 stops
IDA10:15 pmIdaho Falls Fanning Field
Jun 17
IDA2:26 pmIdaho Falls Fanning Field
13h 29m
1 stop
LHR10:55 amLondon Heathrow
$1,239
American Airlines
Jun 5
LHR10:05 amLondon Heathrow
19h 10m
2 stops
IDA10:15 pmIdaho Falls Fanning Field
Jun 15
IDA2:26 pmIdaho Falls Fanning Field
13h 29m
1 stop
LHR10:55 amLondon Heathrow
$1,273
American Airlines
Jun 5
LHR12:55 pmLondon Heathrow
16h 20m
1 stop
IDA10:15 pmIdaho Falls Fanning Field
Jun 15
IDA2:26 pmIdaho Falls Fanning Field
13h 29m
1 stop
LHR10:55 amLondon Heathrow
$1,283

British Airways flights from London Heathrow Airport to Idaho Falls

Our best British Airways deals on London Heathrow Airport to Idaho Falls flight tickets
British Airways
Jun 9
LHR10:05 amLondon Heathrow
19h 10m
1 stop
IDA10:15 pmIdaho Falls Fanning Field
Jun 16
IDA7:00 amIdaho Falls Fanning Field
17h 10m
2 stops
LHR7:10 amLondon Heathrow
$1,227
British Airways
Jun 9
LHR12:55 pmLondon Heathrow
16h 20m
1 stop
IDA10:15 pmIdaho Falls Fanning Field
Jun 16
IDA12:17 pmIdaho Falls Fanning Field
13h 48m
1 stop
LHR9:05 amLondon Heathrow
$1,231
British Airways
Jun 5
LHR12:55 pmLondon Heathrow
16h 20m
1 stop
IDA10:15 pmIdaho Falls Fanning Field
Jun 15
IDA7:00 amIdaho Falls Fanning Field
16h 40m
2 stops
LHR6:40 amLondon Heathrow
$1,267

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 May 11, 2026.
Use the filters below to find and compare flights from London Heathrow Airport 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

6:18 am-11:55 am

2 stops22h 37m

$1,074

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

$1,075

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

$1,104

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

$1,128

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

$1,146

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

12:12 pm-10:55 am

1 stop15h 43m

$1,151

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 11/5

2:45 pm-10:39 pm

1 stop14h 54m

Idaho Falls Fanning Field

Mon 11/9

6:15 am-12:20 pm

1 stop23h 05m

$1,155
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

2:20 pm-10:55 am

1 stop13h 35m

$1,158

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

1:44 pm-12:15 pm

1 stop15h 31m

$1,163

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-6:25 am

2 stops16h 25m

$1,167

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

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

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

When to book flights from London Heathrow Airport to Idaho Falls

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

Cheap London Heathrow Airport to Idaho Falls (LHR to IDA) flight deals and tips

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

Fastest flight time

19h 10m

Direct flights

None
The fastest flight from London Heathrow Airport to Idaho Falls takes 19h 10m
There are no direct flights from London Heathrow Airport to Idaho Falls. There are no popular flight routes from London Heathrow Airport to Idaho Falls.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Idaho Falls

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

    Idaho Falls Fanning Field is 4706.6 mi away from London Heathrow. In terms of flight time, this usually takes a little over 19h 10m.

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

    Prices for flights from London Heathrow Airport to Idaho Falls Fanning Field Airport are updated daily.

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

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

    The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable 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?

momondo does allow users to show only those flights to Idaho Falls from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Idaho Falls?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Idaho Falls.

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

Of course. momondo tracks the price of London to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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