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Cheap flights from London Heathrow Airport to Idaho Falls from £569

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
23 Jun — 30 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Idaho Falls

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Idaho Falls
Explore the most affordable flight options available from Heathrow to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 May 2026.

Mon 5/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Wed 14/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£717
Sun 4/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Wed 14/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£747
Sun 4/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Mon 12/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£777
Wed 7/1008:15
LHR
-
IDA
2 stops20h 07m
American Airlines
Wed 14/1012:12
IDA
-
LHR
1 stop15h 43m
American Airlines
Deal found 23/5£797
Wed 7/1013:05
LHR
-
IDA
2 stops16h 49m
Icelandair
Wed 14/1006:09
IDA
-
LHR
2 stops22h 46m
Icelandair
Deal found 23/5£804
Wed 7/1006:30
LHR
-
IDA
2 stops22h 49m
Delta
Mon 12/1006:00
IDA
-
LHR
2 stops24h 05m
Delta
Deal found 23/5£807
Tue 6/1013:05
LHR
-
IDA
2 stops16h 49m
Multiple Airlines
Tue 13/1006:09
IDA
-
LHR
2 stops31h 11m
Multiple Airlines
Deal found 23/5£811
Tue 6/1012:55
LHR
-
IDA
1 stop15h 27m
Finnair
Thu 15/1007:00
IDA
-
LHR
2 stops20h 15m
Finnair
Deal found 23/5£813
Wed 7/1012:55
LHR
-
IDA
1 stop15h 27m
Multiple Airlines
Wed 14/1012:12
IDA
-
LHR
1 stop15h 43m
Multiple Airlines
Deal found 23/5£816
Mon 5/1018:35
LHR
-
IDA
2 stops24h 52m
Delta
Tue 13/1013:10
IDA
-
LHR
1 stop14h 50m
Delta
Deal found 23/5£820
Mon 5/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Sun 11/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£824
Tue 1/908:15
LHR
-
IDA
2 stops20h 05m
American Airlines
Fri 25/914:20
IDA
-
LHR
1 stop13h 35m
American Airlines
Deal found 20/5£825

Find flight deals from Heathrow to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 24 May 2026.

Round-trip from

£717

One-way from

£569
Alaska Airlines
  • Alaska Airlines
  • 5/10-13/10
  • 2 total stops
  • 55h 31m total
  • London to Idaho Falls
Search Deals
23/8
  • 23/8
  • 2 total stops
  • 56h 31m total
  • London to Idaho Falls
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 24 May 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

Mon 5/10

17:45-12:27

2 stops25h 42m

Idaho Falls Fanning Field

Thu 15/10

13:10-14:00

2 stops17h 50m

£820

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:14

2 stops18h 59m

Idaho Falls Fanning Field

Fri 25/9

18:50-20:10

2 stops18h 20m

£847

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 21/6

14:10-16:08

2 stops32h 58m

Idaho Falls Fanning Field

Sun 19/7

07:15-15:05

1 stop24h 50m

£891

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 10/10

10:55-22:19

1 stop18h 24m

Idaho Falls Fanning Field

Mon 12/10

13:10-10:00

1 stop13h 50m

£892

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/6

06:15-18:17

2 stops19h 02m

Idaho Falls Fanning Field

Tue 16/6

06:00-11:00

1 stop22h 00m

£909

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 5/6

06:30-22:42

2 stops23h 12m

Idaho Falls Fanning Field

Mon 15/6

11:25-13:05

2 stops18h 40m

£933

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 5/7

06:30-22:31

2 stops23h 01m

Idaho Falls Fanning Field

Sun 12/7

19:00-07:10

2 stops29h 10m

£942

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 5/6

09:15-22:15

2 stops20h 00m

Idaho Falls Fanning Field

Mon 15/6

12:17-12:15

1 stop16h 58m

£946
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 23/8

12:55-21:20

1 stop15h 25m

Idaho Falls Fanning Field

Fri 28/8

12:10-10:55

1 stop15h 45m

£1,034
Cheapest one-way

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 23/8

21:25-22:56

2 stops56h 31m

£569

Flights are sorted by cheapest return flights first.

Deals found on 21/5

Showing 1-10 of 11 resultsSorted by cheapest first
1
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Best time to book a flight from Heathrow to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Idaho Falls

What’s the top stopover airport for flights from London Heathrow Airport to Idaho Falls?

Share of one-stop return flights from London Heathrow Airport to Idaho Falls chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Denver (DEN) – chosen by Cheapflights users on 80% of one-stop itineraries from London Heathrow Airport to Idaho Falls on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Idaho Falls?

Average return fare for one-stop flights from London Heathrow Airport to Idaho Falls, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Salt Lake City (SLC) is the most affordable one-stop option, with an average return flight price of £935.

What’s the fastest stopover option from London Heathrow Airport to Idaho Falls?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Idaho Falls, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 13h 36m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Idaho Falls?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Idaho Falls, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 52m.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Idaho Falls from London Heathrow?

    Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Idaho Falls from London Heathrow. Booking flights from London Heathrow to Fanning Field (IDA) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Idaho Falls?

    Departing from London Heathrow Airport to Idaho Falls will take you 25h 42m. Airlines will cover a distance of 4705 mi.

  • Can I find deals for flights from Heathrow to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Heathrow to Idaho Falls flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Idaho Falls.

  • Can I find deals for business class flights from Heathrow to Idaho Falls?

    Yes. Cheapflights offers flight deals from Heathrow to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from Heathrow to Idaho Falls?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Idaho Falls by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Idaho Falls with no change fees?

Need flexible booking options for your flight to Idaho Falls from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Idaho Falls become cheaper?

Of course! You can now track prices for flights from Heathrow to Idaho Falls and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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