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Cheap flights from London Heathrow Airport to Idaho Falls from £534

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 16/9. 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
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Find the cheapest flights from London Heathrow Airport to Idaho Falls

Cheap return flights

Enter your travel dates to find the best prices.
Finnair Logo
09:15 - 21:20
LHR
-
IDA
19h 05m
2 stops
Finnair Logo
07:00 - 10:15
IDA
-
LHR
20h 15m
2 stops
£762Finnair
Tue, 1 Sep - Fri, 25 Sep
Finnair Logo
09:15 - 21:20
LHR
-
IDA
19h 05m
2 stops
Finnair Logo
07:00 - 10:15
IDA
-
LHR
20h 15m
2 stops
£779Finnair
Tue, 1 Sep - Fri, 25 Sep
Finnair Logo
10:05 - 21:20
LHR
-
IDA
18h 15m
1 stop
Finnair Logo
07:00 - 10:15
IDA
-
LHR
20h 15m
2 stops
£784Finnair
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
14:45 - 22:39
LHR
-
IDA
14h 54m
1 stop
Alaska Airlines Logo
06:15 - 12:20
IDA
-
LHR
23h 05m
1 stop
£785Alaska Airlines
Thu, 3 Dec - Mon, 7 Dec
Alaska Airlines Logo
14:45 - 22:39
LHR
-
IDA
14h 54m
1 stop
Alaska Airlines Logo
06:15 - 12:20
IDA
-
LHR
23h 05m
1 stop
£787Alaska Airlines
Thu, 3 Dec - Mon, 7 Dec
Alaska Airlines Logo
14:45 - 22:39
LHR
-
IDA
14h 54m
1 stop
Alaska Airlines Logo
06:15 - 12:20
IDA
-
LHR
23h 05m
1 stop
£787Alaska Airlines
Thu, 3 Dec - Mon, 7 Dec
Alaska Airlines Logo
14:45 - 22:39
LHR
-
IDA
14h 54m
1 stop
Alaska Airlines Logo
06:15 - 12:20
IDA
-
LHR
23h 05m
1 stop
£793Alaska Airlines
Thu, 3 Dec - Mon, 7 Dec
KLM Logo
10:55 - 18:20
LHR
-
IDA
14h 25m
1 stop
KLM Logo
18:57 - 10:00
IDA
-
LHR
32h 03m
1 stop
£802KLM
Tue, 1 Sep - Fri, 25 Sep
Virgin Atlantic Logo
09:20 - 22:32
LHR
-
IDA
20h 12m
2 stops
Virgin Atlantic Logo
13:05 - 10:00
IDA
-
LHR
13h 55m
1 stop
£814Virgin Atlantic
Tue, 1 Sep - Fri, 25 Sep
Virgin Atlantic Logo
09:20 - 22:32
LHR
-
IDA
20h 12m
2 stops
Virgin Atlantic Logo
13:05 - 10:00
IDA
-
LHR
13h 55m
1 stop
£816Virgin Atlantic
Tue, 1 Sep - Fri, 25 Sep

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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
1 Sept
LHR09:20London Heathrow
20h 12m
2 stops
IDA22:32Idaho Falls Fanning Field
25 Sept
IDA13:05Idaho Falls Fanning Field
13h 55m
1 stop
LHR10:00London Heathrow
£814
Virgin Atlantic
1 Sept
LHR09:20London Heathrow
20h 12m
2 stops
IDA22:32Idaho Falls Fanning Field
25 Sept
IDA13:05Idaho Falls Fanning Field
13h 55m
1 stop
LHR10:00London Heathrow
£816
Virgin Atlantic
1 Sept
LHR10:55London Heathrow
14h 25m
1 stop
IDA18:20Idaho Falls Fanning Field
25 Sept
IDA13:05Idaho Falls Fanning Field
13h 55m
1 stop
LHR10:00London Heathrow
£818

Finnair flights from London Heathrow Airport to Idaho Falls

Our best Finnair deals on London Heathrow Airport to Idaho Falls flight tickets
Finnair
1 Sept
LHR09:15London Heathrow
19h 05m
2 stops
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA07:00Idaho Falls Fanning Field
20h 15m
2 stops
LHR10:15London Heathrow
£762
Finnair
1 Sept
LHR09:15London Heathrow
19h 05m
2 stops
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA07:00Idaho Falls Fanning Field
20h 15m
2 stops
LHR10:15London Heathrow
£778
Finnair
1 Sept
LHR10:05London Heathrow
18h 15m
1 stop
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA07:00Idaho Falls Fanning Field
20h 15m
2 stops
LHR10:15London Heathrow
£784

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 3 July 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 return flight

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

09:15-21:20

2 stops19h 05m

Idaho Falls Fanning Field

Fri 25/9

07:00-10:15

2 stops20h 15m

£762

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

09:15-21:20

2 stops19h 05m

Idaho Falls Fanning Field

Fri 25/9

07:00-10:15

2 stops20h 15m

£778

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:05-21:20

1 stop18h 15m

Idaho Falls Fanning Field

Fri 25/9

07:00-10:15

2 stops20h 15m

£784

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 3/12

14:45-22:39

1 stop14h 54m

Idaho Falls Fanning Field

Mon 7/12

06:15-12:20

1 stop23h 05m

£785

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 3/12

14:45-22:39

1 stop14h 54m

Idaho Falls Fanning Field

Mon 7/12

06:15-12:20

1 stop23h 05m

£787

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 3/12

14:45-22:39

1 stop14h 54m

Idaho Falls Fanning Field

Mon 7/12

06:15-12:20

1 stop23h 05m

£787

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 3/12

14:45-22:39

1 stop14h 54m

Idaho Falls Fanning Field

Mon 7/12

06:15-12:20

1 stop23h 05m

£793

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:55-18:20

1 stop14h 25m

Idaho Falls Fanning Field

Fri 25/9

18:57-10:00

1 stop32h 03m

£802
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

09:20-22:32

2 stops20h 12m

Idaho Falls Fanning Field

Fri 25/9

13:05-10:00

1 stop13h 55m

£814

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

09:20-22:32

2 stops20h 12m

Idaho Falls Fanning Field

Fri 25/9

13:05-10:00

1 stop13h 55m

£816

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
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

What is the cheapest airline that flies from London Heathrow to Idaho Falls Fanning Field?

Delta is the most popular carrier operating from London Heathrow to Idaho Falls Fanning Field

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 return 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

17h 47m

Direct flights

None
The fastest flight from London Heathrow Airport to Idaho Falls takes 17h 47m
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?

    There are 4706.6 mi between London Heathrow and Idaho Falls Fanning Field. Typically, this will take 17h 47m by plane in normal conditions.

  • 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 were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 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.

Why use momondo?

Why should I use momondo to find a flight deal from London to Idaho Falls?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from London.

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

All flight searches from London to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between London and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from London and alert you when they change.

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