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Cheap flights from London Heathrow Airport to Idaho Falls from $804

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 Heathrow Airport to Idaho Falls departing on 3/18. 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.
Multiple Airlines Logo
12:20 pm - 10:52 pm
LHR
-
IDA
16h 32m
1 stop
Multiple Airlines Logo
6:00 am - 8:45 am
IDA
-
LHR
20h 45m
2 stops
$804Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
12:20 pm - 10:52 pm
LHR
-
IDA
16h 32m
1 stop
Multiple Airlines Logo
6:00 am - 10:30 am
IDA
-
LHR
22h 30m
1 stop
$965Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Virgin Atlantic Logo
8:55 am - 10:16 pm
LHR
-
IDA
19h 21m
2 stops
Virgin Atlantic Logo
1:10 pm - 10:30 am
IDA
-
LHR
15h 20m
2 stops
$967Virgin Atlantic
Wed, Mar 18 - Wed, Mar 25
KLM Logo
8:25 pm - 6:15 pm
LHR
-
IDA
27h 50m
2 stops
KLM Logo
6:55 pm - 10:00 am
IDA
-
LHR
32h 05m
1 stop
$990KLM
Mon, Mar 16 - Sun, Mar 29
Finnair Logo
2:50 pm - 1:48 pm
LHR
-
IDA
28h 58m
1 stop
Finnair Logo
2:18 pm - 8:05 am
IDA
-
LHR
34h 47m
1 stop
$994Finnair
Mon, Mar 16 - Sun, Mar 29
KLM Logo
8:40 am - 6:15 pm
LHR
-
IDA
39h 35m
2 stops
KLM Logo
6:55 pm - 1:05 pm
IDA
-
LHR
35h 10m
2 stops
$1,048KLM
Mon, Mar 16 - Sun, Mar 29
United Airlines Logo
9:30 am - 8:58 pm
LHR
-
IDA
18h 28m
2 stops
United Airlines Logo
10:50 am - 9:40 am
IDA
-
LHR
16h 50m
1 stop
$1,132United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
9:30 am - 8:58 pm
LHR
-
IDA
18h 28m
2 stops
United Airlines Logo
2:35 pm - 11:20 am
IDA
-
LHR
14h 45m
2 stops
$1,140United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
7:30 am - 9:48 am
LHR
-
IDA
33h 18m
2 stops
United Airlines Logo
5:33 pm - 9:40 am
IDA
-
LHR
33h 07m
1 stop
$1,151United Airlines
Wed, Feb 18 - Sun, Feb 22
United Airlines Logo
7:30 am - 9:48 am
LHR
-
IDA
33h 18m
2 stops
United Airlines Logo
5:33 pm - 9:40 am
IDA
-
LHR
33h 07m
1 stop
$1,152United Airlines
Wed, Feb 18 - Sun, Feb 22

United Airlines flights from London Heathrow Airport to Idaho Falls

Our best United Airlines deals on London Heathrow Airport to Idaho Falls flight tickets
United Airlines
Mar 2
LHR9:30 amLondon Heathrow
18h 28m
2 stops
IDA8:58 pmIdaho Falls Fanning Field
Mar 9
IDA10:50 amIdaho Falls Fanning Field
16h 50m
1 stop
LHR9:40 amLondon Heathrow
$1,132
United Airlines
Mar 2
LHR9:30 amLondon Heathrow
18h 28m
2 stops
IDA8:58 pmIdaho Falls Fanning Field
Mar 9
IDA2:35 pmIdaho Falls Fanning Field
14h 45m
2 stops
LHR11:20 amLondon Heathrow
$1,140
United Airlines
Feb 18
LHR7:30 amLondon Heathrow
33h 18m
2 stops
IDA9:48 amIdaho Falls Fanning Field
Feb 22
IDA5:33 pmIdaho Falls Fanning Field
33h 07m
1 stop
LHR9:40 amLondon Heathrow
$1,151

KLM flights from London Heathrow Airport to Idaho Falls

Our best KLM deals on London Heathrow Airport to Idaho Falls flight tickets
KLM
Mar 16
LHR8:25 pmLondon Heathrow
27h 50m
2 stops
IDA6:15 pmIdaho Falls Fanning Field
Mar 29
IDA6:55 pmIdaho Falls Fanning Field
32h 05m
1 stop
LHR10:00 amLondon Heathrow
$990
KLM
Mar 16
LHR8:40 amLondon Heathrow
39h 35m
2 stops
IDA6:15 pmIdaho Falls Fanning Field
Mar 29
IDA6:55 pmIdaho Falls Fanning Field
35h 10m
2 stops
LHR1:05 pmLondon Heathrow
$1,048

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 February 3, 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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 3/18

12:20 pm-10:52 pm

1 stop16h 32m

Idaho Falls Fanning Field

Wed 3/25

6:00 am-8:45 am

2 stops20h 45m

$804

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 3/18

12:20 pm-10:52 pm

1 stop16h 32m

Idaho Falls Fanning Field

Wed 3/25

6:00 am-10:30 am

1 stop22h 30m

$965

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 3/18

8:55 am-10:16 pm

2 stops19h 21m

Idaho Falls Fanning Field

Wed 3/25

1:10 pm-10:30 am

2 stops15h 20m

$967

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 3/16

8:25 pm-6:15 pm

2 stops27h 50m

Idaho Falls Fanning Field

Sun 3/29

6:55 pm-10:00 am

1 stop32h 05m

$990

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 3/16

2:50 pm-1:48 pm

1 stop28h 58m

Idaho Falls Fanning Field

Sun 3/29

2:18 pm-8:05 am

1 stop34h 47m

$994

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 3/16

8:40 am-6:15 pm

2 stops39h 35m

Idaho Falls Fanning Field

Sun 3/29

6:55 pm-1:05 pm

2 stops35h 10m

$1,048

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 3/2

9:30 am-8:58 pm

2 stops18h 28m

Idaho Falls Fanning Field

Mon 3/9

10:50 am-9:40 am

1 stop16h 50m

$1,132

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 3/2

9:30 am-8:58 pm

2 stops18h 28m

Idaho Falls Fanning Field

Mon 3/9

2:35 pm-11:20 am

2 stops14h 45m

$1,140

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 2/18

7:30 am-9:48 am

2 stops33h 18m

Idaho Falls Fanning Field

Sun 2/22

5:33 pm-9:40 am

1 stop33h 07m

$1,151

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 2/18

7:30 am-9:48 am

2 stops33h 18m

Idaho Falls Fanning Field

Sun 2/22

5:33 pm-9:40 am

1 stop33h 07m

$1,152

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 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 47% 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

18h 28m

Direct flights

None
The fastest flight from London Heathrow Airport to Idaho Falls takes 18h 28m
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

  • 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 18h 28m.

  • 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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