$141 Cheap Delta flights St. George (SGU) to Idaho Falls (IDA)

View $141 flight on Fri, Dec 12, 2025Opens in a new window

$141 Cheap Delta flights St. George (SGU) to Idaho Falls (IDA)

Prices were available within the past 7 days and start at $141 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 21 - Sat, Nov 8
SGU
St. George
IDA
Idaho Falls
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 21 from St. George to Idaho Falls, returning Sat, Nov 8, priced at $218 found 1 day ago
Delta
Thu, Dec 4 - Mon, Dec 8
SGU
St. George
IDA
Idaho Falls
$238 Roundtrip, found 4 days ago
$238
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Dec 4 from St. George to Idaho Falls, returning Mon, Dec 8, priced at $238 found 4 days ago
Delta
Tue, Sep 30 - Fri, Oct 10
SGU
St. George
IDA
Idaho Falls
$250 Roundtrip, found 2 days ago
$250
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 30 from St. George to Idaho Falls, returning Fri, Oct 10, priced at $250 found 2 days ago
Delta
Mon, Sep 29 - Fri, Oct 10
SGU
St. George
IDA
Idaho Falls
$282 Roundtrip, found 2 days ago
$282
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 29 from St. George to Idaho Falls, returning Fri, Oct 10, priced at $282 found 2 days ago
Delta
Sat, Dec 13 - Tue, Dec 16
SGU
St. George
IDA
Idaho Falls
$285 Roundtrip, found 6 days ago
$285
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Dec 13 from St. George to Idaho Falls, returning Tue, Dec 16, priced at $285 found 6 days ago
Delta
Thu, Dec 4 - Sun, Dec 7
SGU
St. George
IDA
Idaho Falls
$287 Roundtrip, found 4 days ago
$287
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Dec 4 from St. George to Idaho Falls, returning Sun, Dec 7, priced at $287 found 4 days ago
Flights from St. George (SGU) to Idaho Falls (IDA)
Origin airport
St. George
Destination airport
Idaho Falls Regional
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
454 mi

Frequently asked questions

How much is a Delta Air Lines flight from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
Make use of the "Price (lowest to highest)" filter on Expedia to find cheap Delta Air Lines return flights from $218 from SGU to IDA. Affordable one-way fares from $141 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SGU to IDA with Delta Air Lines?
Delta Air Lines flights to Idaho Falls are generally more affordable in the low-season months of January and February. Whether you need a one-way or round-trip ticket, you could find a better deal then.
What is the cheapest time to book flights from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA) with Delta Air Lines?
For cheap Delta Air Lines fares from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall cost. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
Use the "Nonstop" filter when browsing for direct Delta Air Lines flights from SGU to IDA. It's also a great way to compare other airlines servicing the same direct trip.
What is the earliest Delta Air Lines flight from SGU to IDA?
To find the earliest departures from SGU to IDA with Delta Air Lines, filter your results by "Early Morning" and "Morning." Booking an early flight usually means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Idaho Falls?
Delta Air Lines flights from St. George Airport (SGU) to Idaho Falls come in to land at Idaho Falls Regional Airport (IDA). This is the main gateway to this city.
Why fly with Delta Air Lines from SGU to IDA?
With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many travelers heading from SGU to IDA. Plus, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from St. George Airport (SGU) to Idaho Falls Regional Airport (IDA)?
Changes are typically free within 24 hours of booking, but your airline may charge you after that. For more information about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to adjust your plans without additional charges, check the "Changes included" or "No cancel fee" filter when organizing your next adventure.
*Available to One Key members.