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Cheap flights from London Heathrow Airport to Idaho Falls from £522

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 20/6. 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.
American Airlines Logo
09:45 - 21:22
LHR
-
IDA
18h 37m
2 stops
American Airlines Logo
07:00 - 11:45
IDA
-
LHR
21h 45m
2 stops
£768American Airlines
Wed, 2 Sep - Thu, 17 Sep
Delta Logo
06:30 - 22:14
LHR
-
IDA
22h 44m
2 stops
Delta Logo
18:50 - 10:00
IDA
-
LHR
32h 10m
1 stop
£784Delta
Mon, 7 Sep - Sun, 13 Sep
Virgin Atlantic Logo
10:55 - 22:40
LHR
-
IDA
18h 45m
1 stop
Virgin Atlantic Logo
13:09 - 14:00
IDA
-
LHR
17h 51m
2 stops
£795Virgin Atlantic
Thu, 16 Apr - Thu, 23 Apr
KLM Logo
11:45 - 22:40
LHR
-
IDA
17h 55m
2 stops
KLM Logo
18:54 - 10:00
IDA
-
LHR
32h 06m
1 stop
£796KLM
Sun, 3 May - Sun, 10 May
American Airlines Logo
10:05 - 21:22
LHR
-
IDA
18h 17m
1 stop
American Airlines Logo
12:12 - 09:05
IDA
-
LHR
13h 53m
1 stop
£798American Airlines
Fri, 4 Sep - Mon, 14 Sep
Multiple Airlines Logo
21:25 - 14:27
LHR
-
IDA
48h 02m
2 stops
Multiple Airlines Logo
16:00 - 11:55
IDA
-
LHR
36h 55m
2 stops
£801Multiple Airlines
Sat, 5 Sep - Wed, 16 Sep
American Airlines Logo
08:15 - 21:22
LHR
-
IDA
20h 07m
2 stops
American Airlines Logo
14:20 - 14:25
IDA
-
LHR
17h 05m
1 stop
£805American Airlines
Fri, 4 Sep - Tue, 15 Sep
KLM Logo
10:55 - 18:17
LHR
-
IDA
14h 22m
1 stop
KLM Logo
18:54 - 10:00
IDA
-
LHR
32h 06m
1 stop
£807KLM
Sun, 3 May - Sun, 10 May
Virgin Atlantic Logo
10:55 - 18:14
LHR
-
IDA
14h 19m
1 stop
Virgin Atlantic Logo
13:10 - 17:35
IDA
-
LHR
21h 25m
2 stops
£808Virgin Atlantic
Sat, 5 Sep - Wed, 16 Sep
Delta Logo
06:30 - 22:40
LHR
-
IDA
23h 10m
2 stops
Delta Logo
05:47 - 13:05
IDA
-
LHR
24h 18m
2 stops
£811Delta
Thu, 16 Apr - Thu, 23 Apr

Delta flights from London Heathrow Airport to Idaho Falls

Our best Delta deals on London Heathrow Airport to Idaho Falls flight tickets
Delta
7 Sept
LHR06:30London Heathrow
22h 44m
2 stops
IDA22:14Idaho Falls Fanning Field
13 Sept
IDA18:50Idaho Falls Fanning Field
32h 10m
1 stop
LHR10:00London Heathrow
£784
Delta
16 Apr
LHR06:30London Heathrow
23h 10m
2 stops
IDA22:40Idaho Falls Fanning Field
23 Apr
IDA05:47Idaho Falls Fanning Field
24h 18m
2 stops
LHR13:05London Heathrow
£811
Delta
1 Sept
LHR06:15London Heathrow
18h 59m
2 stops
IDA18:14Idaho Falls Fanning Field
25 Sept
IDA13:10Idaho Falls Fanning Field
18h 25m
2 stops
LHR14:35London Heathrow
£836

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
2 Sept
LHR09:45London Heathrow
18h 37m
2 stops
IDA21:22Idaho Falls Fanning Field
17 Sept
IDA07:00Idaho Falls Fanning Field
21h 45m
2 stops
LHR11:45London Heathrow
£768
American Airlines
4 Sept
LHR10:05London Heathrow
18h 17m
1 stop
IDA21:22Idaho Falls Fanning Field
14 Sept
IDA12:12Idaho Falls Fanning Field
13h 53m
1 stop
LHR09:05London Heathrow
£798
American Airlines
4 Sept
LHR08:15London Heathrow
20h 07m
2 stops
IDA21:22Idaho Falls Fanning Field
15 Sept
IDA14:20Idaho Falls Fanning Field
17h 05m
1 stop
LHR14:25London Heathrow
£805

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 21 March 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

Wed 2/9

09:45-21:22

2 stops18h 37m

Idaho Falls Fanning Field

Thu 17/9

07:00-11:45

2 stops21h 45m

£768

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 7/9

06:30-22:14

2 stops22h 44m

Idaho Falls Fanning Field

Sun 13/9

18:50-10:00

1 stop32h 10m

£784

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 16/4

10:55-22:40

1 stop18h 45m

Idaho Falls Fanning Field

Thu 23/4

13:09-14:00

2 stops17h 51m

£795

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 3/5

11:45-22:40

2 stops17h 55m

Idaho Falls Fanning Field

Sun 10/5

18:54-10:00

1 stop32h 06m

£796
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/9

10:05-21:22

1 stop18h 17m

Idaho Falls Fanning Field

Mon 14/9

12:12-09:05

1 stop13h 53m

£798

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 5/9

21:25-14:27

2 stops48h 02m

Idaho Falls Fanning Field

Wed 16/9

16:00-11:55

2 stops36h 55m

£801

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/9

08:15-21:22

2 stops20h 07m

Idaho Falls Fanning Field

Tue 15/9

14:20-14:25

1 stop17h 05m

£805

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 3/5

10:55-18:17

1 stop14h 22m

Idaho Falls Fanning Field

Sun 10/5

18:54-10:00

1 stop32h 06m

£807

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 5/9

10:55-18:14

1 stop14h 19m

Idaho Falls Fanning Field

Wed 16/9

13:10-17:35

2 stops21h 25m

£808

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 16/4

06:30-22:40

2 stops23h 10m

Idaho Falls Fanning Field

Thu 23/4

05:47-13:05

2 stops24h 18m

£811

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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, American Airlines, and Finnair are the most popular carriers operating from London Heathrow to Idaho Falls Fanning Field

Which airlines fly to Idaho Falls?

United Airlines, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to Idaho Falls from London Heathrow Airport according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

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 55m

Direct flights

None
The fastest flight from London Heathrow Airport to Idaho Falls takes 17h 55m
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?

    There are 4706.6 mi between London Heathrow and Idaho Falls Fanning Field. Typically, this will take 17h 55m 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 many operators does momondo search for flights from London Heathrow Airport to Idaho Falls Fanning Field Airport?

  • 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.

  • What is the most popular airline from London Heathrow Airport to Idaho Falls?

Best airlines flying from London Heathrow Airport to Idaho Falls

Compare and see reviews for airlines that fly from London Heathrow Airport to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £651Free CancellationRating
7.5
682 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £761Free CancellationRating
7.4
9,451 reviews
Search United Airlines flights

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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