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Cheap flights from London Heathrow Airport to Idaho Falls from £678

LHR — IDA
21 Sep — 28 Sep1
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 8/1017:00 -
1 stop29h 20m
Thu 15/1013:58 -
1 stop18h 07m
Deal found 20/8£812
Thu 17/911:00 -
1 stop17h 20m
Thu 24/912:15 -
1 stop13h 50m
Deal found 17/8£860
Thu 1/1017:00 -
1 stop29h 20m
Thu 8/1013:58 -
1 stop18h 07m
Deal found 17/8£863
Tue 1/909:20 -
2 stops20h 12m
Fri 25/918:57 -
2 stops18h 13m
Deal found 17/8£867
Thu 17/914:10 -
2 stops30h 27m
Thu 24/912:15 -
2 stops16h 55m
Deal found 17/8£878
Mon 26/1016:00 -
2 stops36h 10m
Fri 30/1013:05 -
2 stops59h 20m
Deal found 20/8£902
Mon 26/1014:45 -
1 stop14h 14m
Fri 30/1020:28 -
2 stops34h 22m
Deal found 20/8£928
Sun 4/1009:30 -
2 stops42h 24m
Sun 11/1014:28 -
2 stops24h 07m
Deal found 20/8£942
Mon 26/1014:45 -
1 stop30h 35m
Fri 30/1006:09 -
1 stop24h 11m
Deal found 20/8£953
Thu 1/1007:30 -
2 stops16h 46m
Thu 8/1007:00 -
2 stops16h 45m
Deal found 17/8£954

Find flight deals from Heathrow to Idaho Falls

Round-trip from

£796

One-way from

£678
Alaska Airlines
  • Alaska Airlines
  • 5/11-9/11
  • 2 total stops
  • 30h 36m total
  • London to Idaho Falls
Search Deals
31/8
  • 31/8
  • 3 total stops
  • 31h 51m 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

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

£796

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 1/10

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Thu 8/10

13:58-15:05

1 stop18h 07m

£863

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 1/9

10:55-18:20

1 stop14h 25m

Idaho Falls Fanning Field

Fri 25/9

06:00-10:00

1 stop21h 00m

£867

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sun 4/10

09:30-20:54

2 stops42h 24m

Idaho Falls Fanning Field

Sun 11/10

16:05-09:40

1 stop34h 35m

£942

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 26/10

14:45-15:20

1 stop30h 35m

Idaho Falls Fanning Field

Fri 30/10

06:09-12:20

1 stop24h 11m

£953
Fastest return journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 1/10

07:30-17:16

2 stops16h 46m

Idaho Falls Fanning Field

Thu 8/10

07:00-06:45

2 stops16h 45m

£954

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 1/9

21:25-22:56

2 stops32h 31m

Idaho Falls Fanning Field

Fri 25/9

06:18-11:55

2 stops22h 37m

£956
Cheapest one-way
Fastest single journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 31/8

22:05-22:56

3 stops31h 51m

£678

Flights are sorted by cheapest return flights first.

Deals found on 19/8

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 £921.

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
10,106 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
United Airlines
7.4
Good
10,106 reviews
United Airlines
7.4
Good
10,106 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

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 14h 25m. Airlines will cover a distance of 4705 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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£1,021Average£1,129FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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