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£715+ Cheap flights to Idaho Falls

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
— IDA
26 Jun — 3 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 27 May 2026.

Mon 5/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Tue 13/1006:09
IDA
-
LHR
1 stop25h 56m
Alaska Airlines
Deal found 23/5£715
Sun 4/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Tue 13/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£745
Sun 4/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Mon 12/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£775
Wed 7/1008:15
LHR
-
IDA
2 stops20h 07m
American Airlines
Wed 14/1012:12
IDA
-
LHR
1 stop15h 43m
American Airlines
Deal found 23/5£795
Wed 7/1013:05
LHR
-
IDA
2 stops16h 49m
Icelandair
Wed 14/1006:09
IDA
-
LHR
2 stops22h 46m
Icelandair
Deal found 23/5£802
Wed 7/1006:30
LHR
-
IDA
2 stops22h 49m
Delta
Thu 15/1013:10
IDA
-
LHR
2 stops16h 55m
Delta
Deal found 23/5£805
Tue 6/1013:05
LHR
-
IDA
2 stops16h 49m
Multiple Airlines
Tue 13/1006:09
IDA
-
LHR
2 stops31h 11m
Multiple Airlines
Deal found 23/5£809
Tue 6/1012:55
LHR
-
IDA
1 stop15h 27m
Finnair
Thu 15/1007:00
IDA
-
LHR
2 stops20h 15m
Finnair
Deal found 23/5£811
Wed 7/1012:55
LHR
-
IDA
1 stop15h 27m
Multiple Airlines
Wed 14/1012:12
IDA
-
LHR
1 stop15h 43m
Multiple Airlines
Deal found 23/5£815
Mon 5/1017:45
LHR
-
IDA
2 stops25h 42m
Delta
Thu 15/1013:10
IDA
-
LHR
2 stops17h 50m
Delta
Deal found 23/5£818
Mon 5/1017:00
LHR
-
IDA
1 stop29h 35m
Alaska Airlines
Sun 11/1013:46
IDA
-
LHR
1 stop18h 19m
Alaska Airlines
Deal found 23/5£822
Tue 1/908:15
LHR
-
IDA
2 stops20h 05m
American Airlines
Fri 25/912:12
IDA
-
LHR
1 stop13h 53m
American Airlines
Deal found 23/5£825

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 27 May 2026.

Return from

£715
Alaska Airlines
  • Alaska Airlines
  • 5/10-14/10
  • 2 total stops
  • 47h 54m total
  • London to Idaho Falls
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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 27 May 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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 5/10

17:00-15:35

1 stop29h 35m

Idaho Falls Fanning Field

Thu 15/10

06:09-15:05

1 stop25h 56m

£715

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 5/10

17:45-12:27

2 stops25h 42m

Idaho Falls Fanning Field

Thu 15/10

13:10-14:00

2 stops17h 50m

£818

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 5/10

17:00-15:35

1 stop29h 35m

Idaho Falls Fanning Field

Sun 11/10

13:46-15:05

1 stop18h 19m

£822
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:20

1 stop15h 25m

Idaho Falls Fanning Field

Fri 25/9

14:08-10:55

1 stop13h 47m

£846

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:55-18:20

1 stop14h 25m

Idaho Falls Fanning Field

Fri 25/9

18:57-20:10

2 stops18h 13m

£855

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 21/6

14:10-16:08

2 stops32h 58m

Idaho Falls Fanning Field

Sun 19/7

07:15-15:05

1 stop24h 50m

£889

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 10/10

10:55-22:19

1 stop18h 24m

Idaho Falls Fanning Field

Mon 12/10

13:10-10:00

1 stop13h 50m

£890

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/6

12:55-22:15

1 stop16h 20m

Idaho Falls Fanning Field

Tue 16/6

07:00-10:55

1 stop20h 55m

£895

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/6

06:30-18:17

2 stops18h 47m

Idaho Falls Fanning Field

Tue 16/6

15:25-11:00

1 stop12h 35m

£901

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

06:18-14:40

2 stops25h 22m

£928

Flights are sorted by cheapest return flights first.

Deals found on 23/5

Showing 1-10 of 13 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
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 16 hours 2 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 (15 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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How does Cheapflights help users find flights to Idaho Falls?

Deals for Idaho Falls flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Idaho Falls?

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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