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£601+ Cheap flights to Idaho Falls

— IDA
30 Sep — 7 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Idaho Falls in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Idaho Falls

Wed 14/1011:40 -
1 stop18h 19m
Wed 21/1013:58 -
1 stop14h 22m
Deal found 30/8£711
Tue 13/1017:00 -
1 stop29h 20m
Tue 20/1006:09 -
1 stop25h 56m
Deal found 29/8£741
Mon 12/1011:40 -
1 stop18h 19m
Mon 19/1013:58 -
1 stop14h 22m
Deal found 28/8£765
Sun 11/1011:40 -
1 stop18h 19m
Sun 18/1013:58 -
1 stop18h 37m
Deal found 26/8£774
Mon 12/1017:00 -
2 stops27h 21m
Mon 19/1013:58 -
1 stop18h 07m
Deal found 28/8£823
Tue 13/1008:15 -
2 stops20h 27m
Tue 20/1013:50 -
1 stop14h 00m
Deal found 29/8£834
Wed 14/1010:45 -
2 stops18h 25m
Wed 21/1013:05 -
2 stops15h 15m
Deal found 30/8£846
Mon 12/1018:35 -
2 stops34h 35m
Mon 19/1013:05 -
2 stops35h 10m
Deal found 28/8£847
Tue 13/1010:55 -
1 stop14h 21m
Tue 20/1013:05 -
1 stop14h 55m
Deal found 29/8£867
Tue 13/1015:40 -
2 stops30h 40m
Tue 20/1013:58 -
2 stops17h 42m
Deal found 29/8£937
Sun 11/1008:15 -
2 stops20h 27m
Sun 18/1006:37 -
2 stops18h 28m
Deal found 26/8£953
Wed 14/1015:40 -
2 stops38h 19m
Wed 21/1013:58 -
2 stops17h 42m
Deal found 30/8£1,138

Find flight deals to Idaho Falls

Return from

£711

One-way from

£601
14/10-21/10
  • 14/10-21/10
  • 2 total stops
  • 32h 41m total
  • London to Idaho Falls
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/1
  • 2 total stops
  • 29h 34m total
  • London to Idaho Falls
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Idaho Falls that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Wed 14/10

11:40-22:59

1 stop18h 19m

Idaho Falls Fanning Field

Wed 21/10

13:58-11:20

1 stop14h 22m

£711

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

£722

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 13/10

08:15-21:42

2 stops20h 27m

Idaho Falls Fanning Field

Tue 20/10

13:50-10:50

1 stop14h 00m

£834

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 12/10

18:35-22:10

2 stops34h 35m

Idaho Falls Fanning Field

Mon 19/10

13:05-07:15

2 stops35h 10m

£847

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Tue 13/10

15:40-22:59

2 stops38h 19m

Idaho Falls Fanning Field

Tue 20/10

13:58-14:40

2 stops17h 42m

£946

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Wed 14/10

15:40-22:59

2 stops38h 19m

Idaho Falls Fanning Field

Wed 21/10

13:58-14:40

2 stops17h 42m

£1,138

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Sun 11/10

15:40-22:59

2 stops38h 19m

Idaho Falls Fanning Field

Sun 18/10

13:58-14:40

2 stops17h 42m

£1,253
Cheapest one-way

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Fri 8/1

14:45-13:19

2 stops29h 34m

£601

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Fri 8/1

13:00-21:08

3 stops39h 08m

£698

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Fri 8/1

11:55-22:53

2 stops17h 58m

£774

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 12 resultsSorted by cheapest first
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Best time to book a flight to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Idaho Falls

How long is the flight to Idaho Falls?

On average, a flight from London to Idaho Falls takes 17 hours 37 minutes. Flights to Idaho Falls from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Idaho Falls?

The most popular airline flying from London to Idaho Falls is United Airlines.

United Airlines
United Airlines
From £1,029

What are the cheapest airlines that fly to Idaho Falls?

The cheapest airline flying from London to Idaho Falls is United Airlines.

Rainfall in Idaho Falls by month

In terms of precipitation, rainfall in Idaho Falls ranges from 15.0 - 51.0 inches per month. May is typically the wettest month, when rainfall can reach 51.0 mm. July is typically the driest time to visit Idaho Falls when rainfall is around 15.0 mm.

Temperature in Idaho Falls by month

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

FAQs about flying to Idaho Falls

Getting around Idaho Falls

Public buses, hire cars, and taxis all operate in Idaho Falls, so getting around is easy. There are also several specialised tour buses which will take you on trips to the mountains, the plains, or the Falls. Public buses tend to be run by various companies, so make sure you enquire which companies operate on the routes that you want to take. There are also air links to other parts of the US, such as Utah, with flights leaving several times a day, should you wish to explore even further afield, too.

  • When is the best time to fly to Idaho Falls?

    Winters in Idaho tend to be very snowy and cold, so unless you are visiting this region to ski or snowboard, it might be best to travel in another season. If you want to avoid the more expensive travel costs that are associated with the school summer holidays between June and August, whilst still being able to enjoy some temperate weather that lets you get out and about in nature, then the autumn months of September and October are a good time to visit Idaho Falls. Idaho Falls is also home to several festivals, from an annual Shakespeare Festival to a yearly June Picnic. So why not have a look to see what is going on and time your visit to coincide with one of these public events.

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

    Booking a flight to Idaho Falls Fanning Field (IDA) is your only option if you intend on flying to Idaho Falls. It is only a 3.8 mi journey from Fanning Field to Idaho Falls’s city center.

  • Can I find cheaper flights to Idaho Falls if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Idaho Falls on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Idaho Falls?

    Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Idaho Falls.

  • Where does the fastest flight to Idaho Falls depart from?

    For those looking to save time traveling to Idaho Falls, London offers the quickest one-way flight (16 hours 56 minutes).

  • Does Idaho Falls Fanning Field have car hire?

    Yes. Those touching down at Idaho Falls Fanning Field can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Idaho Falls Fanning Field?

    Yes. Idaho Falls Fanning Field has hotels nearby for those requiring accommodations. New Near Downtown+river+airport is the closest property to Idaho Falls Fanning Field (0.0 mi away from Idaho Falls Fanning Field).

See more FAQs

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Idaho Falls.

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Yes! Cheapflights helps users easily find flights to Idaho Falls with no change fees.

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