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£534+ Cheap flights to Idaho Falls

— IDA
10 Dec — 17 Dec1
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

Tue 8/1214:45 -
1 stop31h 22m
Fri 11/1206:00 -
1 stop23h 20m
Deal found 7/11£753
Sun 15/1114:45 -
1 stop15h 09m
Wed 18/1113:53 -
1 stop15h 27m
Deal found 10/11£917
Thu 24/1206:20 -
2 stops23h 15m
Thu 31/1205:40 -
2 stops22h 05m
Deal found 9/11£974
Thu 24/1209:35 -
2 stops19h 35m
Thu 31/1213:48 -
1 stop13h 37m
Deal found 9/11£979
Thu 24/1214:45 -
1 stop16h 00m
Thu 31/1213:52 -
1 stop15h 28m
Deal found 9/11£1,019
Thu 24/1211:55 -
2 stops18h 50m
Thu 31/1206:00 -
2 stops21h 55m
Deal found 9/11£1,070
Thu 24/1207:40 -
2 stops20h 39m
Thu 31/1207:00 -
2 stops17h 40m
Deal found 9/11£1,250
Sun 15/1112:15 -
2 stops32h 01m
Wed 18/1106:00 -
2 stops18h 05m
Deal found 10/11£1,251
Tue 8/1212:15 -
2 stops33h 52m
Fri 11/1206:00 -
1 stop23h 20m
Deal found 7/11£1,267
Mon 16/1120:35 -
2 stops33h 19m
Wed 18/1113:53 -
1 stop15h 27m
Deal found 10/11£1,366

Find flight deals to Idaho Falls

Return from

£753

One-way from

£565
Alaska Airlines
  • Alaska Airlines
  • 8/12-11/12
  • 2 total stops
  • 54h 42m total
  • London to Idaho Falls
Search Deals
13/12-31/12
  • 13/12-31/12
  • 3 total stops
  • 57h 37m 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

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 16/11

18:30-15:18

3 stops51h 48m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£534

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Sun 13/12

10:40-13:17

3 stops57h 37m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£565

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sun 13/12

19:55-13:17

3 stops48h 22m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£577

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Sat 26/12

11:55-23:45

2 stops18h 50m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£648

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sat 26/12

14:45-23:45

1 stop16h 00m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£656
Fastest return journey

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sun 13/12

10:45-18:17

1 stop14h 32m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£728

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 28/12

06:35-09:54

2 stops34h 19m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£731

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sun 27/12

07:40-21:19

2 stops20h 39m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£788

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Sat 26/12

11:35-13:28

1 stop32h 53m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£788

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Mon 28/12

14:45-15:18

1 stop31h 33m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£801

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 17 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 19 hours 44 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 £1,039

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 (18 hours 50 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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