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£769+ Cheap flights to Idaho Falls

— IDA
18 Sep — 25 Sep1
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 30/917:00 -
1 stop29h 20m
Wed 7/1013:58 -
1 stop18h 07m
Deal found 16/8£769
Thu 5/1114:45 -
1 stop15h 09m
Mon 9/1113:53 -
1 stop15h 27m
Deal found 14/8£802
Wed 30/910:55 -
1 stop18h 27m
Wed 7/1013:05 -
2 stops19h 30m
Deal found 16/8£804
Wed 30/915:40 -
2 stops38h 16m
Wed 7/1006:09 -
2 stops25h 31m
Deal found 16/8£832
Tue 15/910:55 -
1 stop18h 27m
Sat 19/913:05 -
2 stops34h 40m
Deal found 16/8£835
Thu 17/911:00 -
1 stop17h 20m
Thu 24/912:15 -
1 stop13h 50m
Deal found 17/8£867
Thu 1/1017:00 -
1 stop29h 20m
Thu 8/1013:58 -
1 stop18h 07m
Deal found 17/8£870
Tue 1/910:55 -
1 stop18h 37m
Fri 25/906:00 -
1 stop21h 00m
Deal found 14/8£871
Tue 1/915:40 -
2 stops38h 16m
Fri 25/906:18 -
2 stops25h 22m
Deal found 14/8£922
Tue 15/915:40 -
2 stops30h 40m
Sat 19/906:18 -
2 stops25h 17m
Deal found 16/8£1,349

Find flight deals to Idaho Falls

Return from

£769
Alaska Airlines
  • Alaska Airlines
  • 30/9-7/10
  • 2 total stops
  • 47h 27m total
  • London to Idaho Falls
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Cheapflights Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Wed 30/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Wed 7/10

13:58-15:05

1 stop18h 07m

£769

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

£803
Fastest return journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Wed 30/9

10:55-22:22

1 stop18h 27m

Idaho Falls Fanning Field

Wed 7/10

13:05-15:35

2 stops19h 30m

£804

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Wed 30/9

15:40-22:56

2 stops38h 16m

Idaho Falls Fanning Field

Wed 7/10

06:09-14:40

2 stops25h 31m

£832

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 15/9

10:55-22:22

1 stop18h 27m

Idaho Falls Fanning Field

Sat 19/9

13:05-06:45

2 stops34h 40m

£835

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 1/9

10:55-22:32

1 stop18h 37m

Idaho Falls Fanning Field

Fri 25/9

06:00-10:00

1 stop21h 00m

£871

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Tue 1/9

15:40-22:56

2 stops38h 16m

Idaho Falls Fanning Field

Fri 25/9

06:18-14:40

2 stops25h 22m

£922

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Tue 15/9

15:40-15:20

2 stops30h 40m

Idaho Falls Fanning Field

Sat 19/9

06:18-14:35

2 stops25h 17m

£1,349

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Sorted by cheapest first

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 15 hours 40 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 (14 hours 25 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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