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£477+ Cheap flights to Idaho Falls

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
— IDA
16 Jul — 23 Jul1
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
Explore the most affordable flight options available to Idaho Falls. Find the lowest fares based on data from user searches, with prices last updated on 16 June 2026.

Tue 1/910:05
LHR
-
IDA
1 stop18h 15m
Finnair
Fri 25/914:08
IDA
-
LHR
1 stop17h 17m
Finnair
Deal found 14/6£804
Tue 1/908:55
LHR
-
IDA
1 stop19h 25m
American Airlines
Fri 25/912:15
IDA
-
LHR
1 stop15h 40m
American Airlines
Deal found 11/6£824
Tue 1/910:45
LHR
-
IDA
2 stops18h 47m
Delta
Fri 25/913:04
IDA
-
LHR
2 stops17h 01m
Delta
Deal found 12/6£847
Tue 1/906:15
LHR
-
IDA
2 stops19h 05m
Multiple Airlines
Fri 25/913:04
IDA
-
LHR
2 stops17h 01m
Multiple Airlines
Deal found 15/6£849
Tue 1/915:40
LGW
-
IDA
2 stops38h 16m
Multiple Airlines
Fri 25/906:18
IDA
-
LGW
2 stops25h 22m
Multiple Airlines
Deal found 14/6£898
Fri 26/616:25
LHR
-
IDA
1 stop36h 50m
British Airways
Sat 18/707:00
IDA
-
LHR
1 stop24h 25m
British Airways
Deal found 10/6£909
Tue 1/913:00
LGW
-
IDA
2 stops16h 56m
Icelandair
Fri 25/914:01
IDA
-
LGW
2 stops17h 39m
Icelandair
Deal found 11/6£913
Fri 26/616:20
LHR
-
IDA
2 stops33h 01m
Virgin Atlantic
Sat 18/711:25
IDA
-
LHR
2 stops18h 40m
Virgin Atlantic
Deal found 10/6£931
Thu 23/716:25
LHR
-
IDA
1 stop36h 46m
Finnair
Fri 31/713:53
IDA
-
LHR
2 stops37h 22m
Finnair
Deal found 15/6£954
Thu 23/715:40
LGW
-
IDA
2 stops37h 59m
Multiple Airlines
Fri 31/716:14
IDA
-
LGW
2 stops15h 26m
Multiple Airlines
Deal found 15/6£1,336
Fri 12/615:40
LGW
-
IDA
2 stops37h 59m
Multiple Airlines
Fri 19/616:14
IDA
-
LGW
2 stops15h 26m
Multiple Airlines
Deal found 11/6£1,766

Find flight deals to Idaho Falls

Find the latest flights to Idaho Falls in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 June 2026.

Return from

£804

One-way from

£477
Finnair
  • Finnair
  • 1/9-25/9
  • 2 total stops
  • 35h 32m total
  • London to Idaho Falls
Search Deals
12/10
  • 12/10
  • 3 total stops
  • 33h 46m total
  • London to Idaho Falls
Search Deals

Cheapflights Fare Finder

 
Locate flights to Idaho Falls that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 16 June 2026.
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 - IDA

LHRIDA

London Heathrow

Tue 1/9

08:20-21:20

2 stops20h 00m

Idaho Falls Fanning Field

Fri 25/9

13:58-10:50

1 stop13h 52m

£804

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

08:55-21:20

1 stop19h 25m

Idaho Falls Fanning Field

Fri 25/9

12:15-10:55

1 stop15h 40m

£824

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:45-22:32

2 stops18h 47m

Idaho Falls Fanning Field

Fri 25/9

13:04-13:05

2 stops17h 01m

£847

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:20

2 stops19h 05m

Idaho Falls Fanning Field

Fri 25/9

13:04-13:05

2 stops17h 01m

£849

LondonIdaho Falls

LGW - IDA

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

£898

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Thu 23/7

15:40-22:39

2 stops37h 59m

Idaho Falls Fanning Field

Fri 31/7

16:14-14:40

2 stops15h 26m

£1,336
Cheapest one-way

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 11/10

09:50-13:06

3 stops34h 16m

£508

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 13/10

13:05-22:54

2 stops16h 49m

£563
Fastest single journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 13/10

10:55-18:14

1 stop14h 19m

£602

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 11/10

17:00-15:35

1 stop29h 35m

£642

Flights are sorted by cheapest return flights first.

Deals found on 14/6

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 28 hours 59 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.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals 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

Plan your trip to Idaho Falls by taking into account the average temperature totals 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.

  • 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 (20 hours 0 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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