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Cheap flights from London Heathrow Airport to Idaho Falls from £568

LHR — IDA
18 Oct — 25 Oct1
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

Thu 22/1006:30 -
2 stops23h 29m
Sat 31/1006:09 -
2 stops47h 41m
Deal found 17/9£714
Thu 22/1017:00 -
1 stop29h 20m
Sat 31/1013:58 -
1 stop16h 22m
Deal found 17/9£818
Mon 5/1016:25 -
1 stop36h 17m
Sun 11/1013:39 -
2 stops33h 36m
Deal found 16/9£820
Mon 5/1016:25 -
1 stop27h 44m
Sun 11/1013:50 -
1 stop14h 00m
Deal found 16/9£888
Thu 22/1010:55 -
1 stop18h 15m
Sat 31/1013:05 -
2 stops59h 20m
Deal found 17/9£917

Find flight deals from Heathrow to Idaho Falls

Round-trip from

£714

One-way from

£568
22/10-31/10
  • 22/10-31/10
  • 4 total stops
  • 71h 10m total
  • London to Idaho Falls
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/1-31/12
  • 1 total stop
  • 15h 08m total
  • London to Idaho Falls
Search Deals

Cheapflights Fare Finder

 
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
Fastest return journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Fri 8/1

14:45-22:53

1 stop15h 08m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£568

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 28/1

14:45-15:21

1 stop31h 36m

Idaho Falls Fanning Field

Mon 1/2

13:56-12:20

1 stop15h 24m

£808

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 22/10

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Sat 31/10

13:58-12:20

1 stop16h 22m

£818

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 5/10

16:25-21:42

1 stop36h 17m

Idaho Falls Fanning Field

Sun 11/10

13:39-06:15

2 stops33h 36m

£820

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Sorted by cheapest first

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

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?

Denver (DEN) – chosen by Cheapflights users on 83% 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?

Salt Lake City (SLC) is the most affordable one-stop option, with an average return flight price of £940.

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

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 12h 54m.

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

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 11m.

Reviews of airlines servicing Idaho Falls

Read reviews from past customers who have flown with United Airlines from London Heathrow Airport to Idaho Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Asha,Sept 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
United Airlines
7.4
Good
10,227 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Asha,Sept 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Related info for your journey

  • 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 1 airline.

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

    Departing from London Heathrow Airport to Idaho Falls will take you 31h 36m. 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Heathrow to Idaho Falls

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£1,042Average£1,153FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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