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Cheap flights from London Heathrow Airport to Idaho Falls from £456

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 16/10. 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 return flights

Logo
10:05 - 21:49LHR-IDA
17h 44m1 stop
Logo
13:58 - 11:40IDA-LHR
14h 42m1 stop
£594
Find Deal
to., 30 okt. - to., 6 nov.
American Airlines Logo
14:25 - 22:34LHR-IDA
15h 09m1 stop
American Airlines Logo
07:10 - 20:00IDA-LHR
29h 50m2 stops
£595American Airlines
Find Deal
lø., 22 nov. - on., 26 nov.
Delta Logo
06:20 - 18:17LHR-IDA
18h 57m2 stops
Delta Logo
06:00 - 10:00IDA-LHR
21h 00m1 stop
£601Delta
Find Deal
lø., 22 nov. - on., 26 nov.
American Airlines Logo
10:05 - 22:34LHR-IDA
19h 29m2 stops
American Airlines Logo
07:10 - 20:00IDA-LHR
29h 50m2 stops
£602American Airlines
Find Deal
lø., 22 nov. - on., 26 nov.
American Airlines Logo
10:05 - 22:34LHR-IDA
19h 29m2 stops
American Airlines Logo
07:10 - 20:00IDA-LHR
29h 50m2 stops
£603American Airlines
Find Deal
lø., 22 nov. - on., 26 nov.
Delta Logo
10:45 - 22:33LHR-IDA
18h 48m1 stop
Delta Logo
06:00 - 10:00IDA-LHR
21h 00m1 stop
£610Delta
Find Deal
lø., 22 nov. - on., 26 nov.
Delta Logo
10:45 - 18:17LHR-IDA
14h 32m1 stop
Delta Logo
06:00 - 10:00IDA-LHR
21h 00m1 stop
£611Delta
Find Deal
lø., 22 nov. - on., 26 nov.
British Airways Logo
11:15 - 12:41LHR-IDA
31h 26m2 stops
British Airways Logo
07:10 - 10:25IDA-LHR
20h 15m2 stops
£642British Airways
Find Deal
to., 30 okt. - to., 6 nov.
United Airlines Logo
11:10 - 22:52LHR-IDA
18h 42m2 stops
United Airlines Logo
05:00 - 05:55IDA-LHR
17h 55m2 stops
£663United Airlines
Find Deal
lø., 22 nov. - on., 26 nov.
United Airlines Logo
07:30 - 21:03LHR-IDA
19h 33m2 stops
United Airlines Logo
14:45 - 09:40IDA-LHR
11h 55m1 stop
£665United Airlines
Find Deal
on., 29 okt. - on., 5 nov.

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
22 Nov
LHR14:25London Heathrow
15h 09m
1 stop
IDA22:34Idaho Falls Fanning Field
26 Nov
IDA07:10Idaho Falls Fanning Field
29h 50m
2 stops
LHR20:00London Heathrow
£595
Find similar
American Airlines
22 Nov
LHR10:05London Heathrow
19h 29m
2 stops
IDA22:34Idaho Falls Fanning Field
26 Nov
IDA07:10Idaho Falls Fanning Field
29h 50m
2 stops
LHR20:00London Heathrow
£602
Find similar
American Airlines
22 Nov
LHR10:05London Heathrow
19h 29m
2 stops
IDA22:34Idaho Falls Fanning Field
26 Nov
IDA07:10Idaho Falls Fanning Field
29h 50m
2 stops
LHR20:00London Heathrow
£603
Find similar

Delta flights from London Heathrow Airport to Idaho Falls

Our best Delta deals on London Heathrow Airport to Idaho Falls flight tickets
Delta
22 Nov
LHR06:20London Heathrow
18h 57m
2 stops
IDA18:17Idaho Falls Fanning Field
26 Nov
IDA06:00Idaho Falls Fanning Field
21h 00m
1 stop
LHR10:00London Heathrow
£601
Find similar
Delta
22 Nov
LHR10:45London Heathrow
18h 48m
1 stop
IDA22:33Idaho Falls Fanning Field
26 Nov
IDA06:00Idaho Falls Fanning Field
21h 00m
1 stop
LHR10:00London Heathrow
£610
Find similar
Delta
22 Nov
LHR10:45London Heathrow
14h 32m
1 stop
IDA18:17Idaho Falls Fanning Field
26 Nov
IDA06:00Idaho Falls Fanning Field
21h 00m
1 stop
LHR10:00London Heathrow
£611
Find similar

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 16 september 2025.
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

to. 30/10

10:05-21:49

1 stop17h 44m

Idaho Falls Fanning Field

to. 6/11

13:58-11:40

1 stop14h 42m

£594

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

14:25-22:34

1 stop15h 09m

Idaho Falls Fanning Field

on. 26/11

07:10-20:00

2 stops29h 50m

£595

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

06:20-18:17

2 stops18h 57m

Idaho Falls Fanning Field

on. 26/11

06:00-10:00

1 stop21h 00m

£601

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

10:05-22:34

2 stops19h 29m

Idaho Falls Fanning Field

on. 26/11

07:10-20:00

2 stops29h 50m

£602

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

10:05-22:34

2 stops19h 29m

Idaho Falls Fanning Field

on. 26/11

07:10-20:00

2 stops29h 50m

£603

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

10:45-22:33

1 stop18h 48m

Idaho Falls Fanning Field

on. 26/11

06:00-10:00

1 stop21h 00m

£610

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

10:45-18:17

1 stop14h 32m

Idaho Falls Fanning Field

on. 26/11

06:00-10:00

1 stop21h 00m

£611

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

to. 30/10

11:15-12:41

2 stops31h 26m

Idaho Falls Fanning Field

to. 6/11

07:10-10:25

2 stops20h 15m

£642

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

lø. 22/11

11:10-22:52

2 stops18h 42m

Idaho Falls Fanning Field

on. 26/11

05:00-05:55

2 stops17h 55m

£663

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

on. 29/10

07:30-21:03

2 stops19h 33m

Idaho Falls Fanning Field

on. 5/11

14:45-09:40

1 stop11h 55m

£665

Flights are sorted by cheapest return 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

What is the cheapest day to depart on your flight to Idaho Falls?

According to our data, Tuesday is the cheapest day to fly to Idaho Falls from London Heathrow Airport. The lowest ticket price found for a Tuesday departure recently was £681. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £940.

What is the cheapest time of day to depart on your flight to Idaho Falls?

The cheapest time of day to fly to Idaho Falls is in the afternoon when flights can be purchased for as low as £766. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £879 on average. Flights to Idaho Falls from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

Direct flights

None
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 14h 32m 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 £641Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £749Free CancellationRating
7.4
8,929 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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