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Cheap flights from London Heathrow Airport to Idaho Falls from $714

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 9/16. 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 Heathrow Airport to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$1,018Finnair
Tue, Sep 1 - Fri, Sep 25
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
$1,040Finnair
Tue, Sep 1 - Fri, Sep 25
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
$1,048Finnair
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
$1,049Alaska Airlines
Thu, Dec 3 - Mon, Dec 7
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
$1,051Alaska Airlines
Thu, Dec 3 - Mon, Dec 7
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
$1,052Alaska Airlines
Thu, Dec 3 - Mon, Dec 7
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
$1,059Alaska Airlines
Thu, Dec 3 - Mon, Dec 7
KLM Logo
10:55 am - 6:20 pm
LHR
-
IDA
14h 25m
1 stop
KLM Logo
6:57 pm - 10:00 am
IDA
-
LHR
32h 03m
1 stop
$1,071KLM
Tue, Sep 1 - Fri, Sep 25
Virgin Atlantic Logo
9:20 am - 10:32 pm
LHR
-
IDA
20h 12m
2 stops
Virgin Atlantic Logo
1:05 pm - 10:00 am
IDA
-
LHR
13h 55m
1 stop
$1,088Virgin Atlantic
Tue, Sep 1 - Fri, Sep 25
Virgin Atlantic Logo
9:20 am - 10:32 pm
LHR
-
IDA
20h 12m
2 stops
Virgin Atlantic Logo
1:05 pm - 10:00 am
IDA
-
LHR
13h 55m
1 stop
$1,090Virgin Atlantic
Tue, Sep 1 - Fri, Sep 25

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Virgin Atlantic flights from London Heathrow Airport to Idaho Falls

Our best Virgin Atlantic deals on London Heathrow Airport to Idaho Falls flight tickets
Virgin Atlantic
Sep 1
LHR9:20 amLondon Heathrow
20h 12m
2 stops
IDA10:32 pmIdaho Falls Fanning Field
Sep 25
IDA1:05 pmIdaho Falls Fanning Field
13h 55m
1 stop
LHR10:00 amLondon Heathrow
$1,088
Virgin Atlantic
Sep 1
LHR9:20 amLondon Heathrow
20h 12m
2 stops
IDA10:32 pmIdaho Falls Fanning Field
Sep 25
IDA1:05 pmIdaho Falls Fanning Field
13h 55m
1 stop
LHR10:00 amLondon Heathrow
$1,090
Virgin Atlantic
Sep 1
LHR10:55 amLondon Heathrow
14h 25m
1 stop
IDA6:20 pmIdaho Falls Fanning Field
Sep 25
IDA1:05 pmIdaho Falls Fanning Field
13h 55m
1 stop
LHR10:00 amLondon Heathrow
$1,093

Finnair flights from London Heathrow Airport to Idaho Falls

Our best Finnair deals on London Heathrow Airport to Idaho Falls flight tickets
Finnair
Sep 1
LHR9:15 amLondon Heathrow
19h 05m
2 stops
IDA9:20 pmIdaho Falls Fanning Field
Sep 25
IDA7:00 amIdaho Falls Fanning Field
20h 15m
2 stops
LHR10:15 amLondon Heathrow
$1,018
Finnair
Sep 1
LHR9:15 amLondon Heathrow
19h 05m
2 stops
IDA9:20 pmIdaho Falls Fanning Field
Sep 25
IDA7:00 amIdaho Falls Fanning Field
20h 15m
2 stops
LHR10:15 amLondon Heathrow
$1,040
Finnair
Sep 1
LHR9:15 amLondon Heathrow
19h 05m
2 stops
IDA9:20 pmIdaho Falls Fanning Field
Sep 25
IDA7:00 amIdaho Falls Fanning Field
20h 15m
2 stops
LHR10:15 amLondon 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 July 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

Cheapest round-trip

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

$1,018

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

$1,040

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

$1,048

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 12/3

2:45 pm-10:39 pm

1 stop14h 54m

Idaho Falls Fanning Field

Mon 12/7

6:15 am-12:20 pm

1 stop23h 05m

$1,049

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 12/3

2:45 pm-10:39 pm

1 stop14h 54m

Idaho Falls Fanning Field

Mon 12/7

6:15 am-12:20 pm

1 stop23h 05m

$1,051

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 12/3

2:45 pm-10:39 pm

1 stop14h 54m

Idaho Falls Fanning Field

Mon 12/7

6:15 am-12:20 pm

1 stop23h 05m

$1,052

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 12/3

2:45 pm-10:39 pm

1 stop14h 54m

Idaho Falls Fanning Field

Mon 12/7

6:15 am-12:20 pm

1 stop23h 05m

$1,059

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

10:55 am-6:20 pm

1 stop14h 25m

Idaho Falls Fanning Field

Fri 9/25

6:57 pm-10:00 am

1 stop32h 03m

$1,071
Quickest round-trip

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

9:20 am-10:32 pm

2 stops20h 12m

Idaho Falls Fanning Field

Fri 9/25

1:05 pm-10:00 am

1 stop13h 55m

$1,088

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

9:20 am-10:32 pm

2 stops20h 12m

Idaho Falls Fanning Field

Fri 9/25

1:05 pm-10:00 am

1 stop13h 55m

$1,090

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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2

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

18h 41m

Direct flights

None
The fastest flight from London Heathrow Airport to Idaho Falls takes 18h 41m
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 18h 41m.

  • 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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