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£689+ Cheap flights to Idaho Falls

— IDA
5 Dec — 12 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

Thu 3/1214:45 -
1 stop15h 11m
Thu 10/1213:54 -
1 stop15h 26m
Deal found 4/11£724
Wed 18/1117:15 -
2 stops35h 36m
Sun 22/1113:43 -
2 stops35h 07m
Deal found 3/11£852
Thu 3/1206:20 -
2 stops22h 47m
Thu 10/1205:35 -
2 stops17h 50m
Deal found 4/11£891
Fri 20/1108:20 -
2 stops21h 11m
Tue 24/1108:00 -
2 stops17h 35m
Deal found 4/11£910
Thu 3/1208:20 -
1 stop20h 29m
Thu 10/1213:41 -
2 stops15h 19m
Deal found 4/11£911
Wed 18/1110:05 -
1 stop18h 38m
Sun 22/1108:00 -
1 stop17h 15m
Deal found 3/11£917
Tue 15/1208:20 -
1 stop20h 29m
Tue 22/1206:00 -
1 stop19h 15m
Deal found 31/10£920
Thu 3/1216:45 -
2 stops32h 32m
Thu 10/1213:00 -
2 stops19h 45m
Deal found 4/11£922
Tue 15/1208:20 -
2 stops21h 42m
Tue 22/1206:00 -
1 stop19h 15m
Deal found 31/10£924
Thu 17/1208:20 -
1 stop20h 36m
Thu 24/1206:15 -
1 stop24h 20m
Deal found 2/11£938
Thu 17/1213:50 -
1 stop30h 27m
Thu 24/1206:00 -
2 stops21h 25m
Deal found 2/11£955
Tue 15/1210:05 -
2 stops19h 57m
Tue 22/1206:15 -
2 stops17h 35m
Deal found 31/10£1,001

Find flight deals to Idaho Falls

Return from

£724

One-way from

£689
Alaska Airlines
  • Alaska Airlines
  • 3/12-10/12
  • 2 total stops
  • 30h 37m total
  • London to Idaho Falls
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/1-31/12
  • 1 total stop
  • 15h 07m 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

Fri 8/1

14:45-22:52

1 stop15h 07m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£689

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 3/12

14:45-22:56

1 stop15h 11m

Idaho Falls Fanning Field

Thu 10/12

13:54-12:20

1 stop15h 26m

£724

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

08:00-12:20

1 stop21h 20m

£726

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 3/12

06:20-22:07

2 stops22h 47m

Idaho Falls Fanning Field

Thu 10/12

05:35-06:25

2 stops17h 50m

£891

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 15/12

08:20-21:49

1 stop20h 29m

Idaho Falls Fanning Field

Tue 22/12

06:00-08:15

1 stop19h 15m

£920

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Thu 3/12

16:45-18:17

2 stops32h 32m

Idaho Falls Fanning Field

Thu 10/12

13:00-15:45

2 stops19h 45m

£922

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Tue 15/12

08:20-23:02

2 stops21h 42m

Idaho Falls Fanning Field

Tue 22/12

06:00-08:15

1 stop19h 15m

£924

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 28/1

06:35-21:10

2 stops21h 35m

Idaho Falls Fanning Field

Mon 1/2

14:30-09:40

1 stop12h 10m

£1,006

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Wed 18/11

16:45-18:17

2 stops32h 32m

Idaho Falls Fanning Field

Sun 22/11

13:11-15:45

2 stops19h 34m

£1,081

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Tue 15/12

11:15-13:17

2 stops33h 02m

Idaho Falls Fanning Field

Tue 22/12

15:55-07:30

2 stops32h 35m

£1,312

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 11 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 26 hours 5 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 £1,034

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, Edinburgh Turnhouse offers the quickest one-way flight (18 hours 45 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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