$185 Cheap Flights from St. George (SGU) to Idaho Falls (IDA)

View $185 flight on Mon, Dec 8, 2025Opens in a new window

Popular airlines from St. George Regional Airport (SGU) to Idaho Falls Regional Airport (IDA)

Cheap Flights from St. George to Idaho Falls (SGU-IDA)

Prices were available within the past 7 days and start at $185 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Dec 20 - Wed, Dec 24
SGU
St. George
IDA
Idaho Falls
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 20 from St. George to Idaho Falls, returning Wed, Dec 24, priced at $218 found 1 day ago
Delta
Wed, Feb 4 - Tue, Feb 10
SGU
St. George
IDA
Idaho Falls
$243 Roundtrip, found 5 days ago
$243
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Feb 4 from St. George to Idaho Falls, returning Tue, Feb 10, priced at $243 found 5 days ago
United
Fri, Dec 19 - Thu, Dec 25
SGU
St. George
IDA
Idaho Falls
$246 Roundtrip, found 4 days ago
$246
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 19 from St. George to Idaho Falls, returning Thu, Dec 25, priced at $246 found 4 days ago
United
Thu, Dec 18 - Thu, Dec 25
SGU
St. George
IDA
Idaho Falls
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from St. George to Idaho Falls, returning Thu, Dec 25, priced at $249 found 1 day ago
Delta
Sat, Dec 6 - Wed, Dec 10
SGU
St. George
IDA
Idaho Falls
$253 Roundtrip, found 2 days ago
$253
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from St. George to Idaho Falls, returning Wed, Dec 10, priced at $253 found 2 days ago
United
Thu, Dec 18 - Mon, Dec 22
SGU
St. George
IDA
Idaho Falls
$260 Roundtrip, found 3 days ago
$260
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 18 from St. George to Idaho Falls, returning Mon, Dec 22, priced at $260 found 3 days ago
American Airlines
Fri, Jan 30 - Tue, Feb 3
SGU
St. George
IDA
Idaho Falls
$263 Roundtrip, found 3 days ago
$263
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Jan 30 from St. George to Idaho Falls, returning Tue, Feb 3, priced at $263 found 3 days ago
Delta
Tue, Jan 13 - Sun, Feb 1
SGU
St. George
IDA
Idaho Falls
$267 Roundtrip, found 3 days ago
$267
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 13 from St. George to Idaho Falls, returning Sun, Feb 1, priced at $267 found 3 days ago
United
Fri, Dec 19 - Thu, Dec 25
SGU
St. George
IDA
Idaho Falls
$274 Roundtrip, found 4 days ago
$274
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 19 from St. George to Idaho Falls, returning Thu, Dec 25, priced at $274 found 4 days ago
United
Thu, Dec 18 - Sun, Dec 28
SGU
St. George
IDA
Idaho Falls
$275 Roundtrip, found 1 day ago
$275
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from St. George to Idaho Falls, returning Sun, Dec 28, priced at $275 found 1 day ago

Alternative airports near Idaho Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Idaho Falls Regional IDA. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $293
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $293
Flights from St. George (SGU) to Idaho Falls (IDA)
Origin airport
St. George
Destination airport
Idaho Falls Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$218
Distance
454 mi

St. George to Idaho Falls Flights

The cheapest times to fly from St. George to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. George to Idaho Falls are during the month of December. You can find some of the cheapest flights from St. George to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. George to Idaho Falls

Sunday is one of the best days to book for cheap flights from St. George to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. George to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. George to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $185 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. George to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. George to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA) cost?
Get a cheap one-way flight from $185 or cheap return flight from $218 from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
Planning your getaway for December can help you save, as it's the cheapest month for flights between SGU and IDA. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
To find the cheapest airline flying from SGU to IDA, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
You'll need to catch a flight with a layover if you're traveling from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from SGU to IDA?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
To avoid potential delays on the St. George Airport (SGU) to Idaho Falls Regional Airport (IDA) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA) last-minute?
Last-minute fares from SGU to IDA are generally more expensive. To secure the lowest prices, start searching for flights as early as possible. That said, if you're flexible with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book a SGU to IDA flight and hotel package?
You can save money by booking a SGU to IDA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
Typically, it's possible to reschedule or cancel your SGU to IDA flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.