$178 Cheap United flights St. Louis (STL) to St. George (SGU)

View $178 flight on Tue, Jul 29, 2025Opens in a new window

$178 Cheap United flights St. Louis (STL) to St. George (SGU)

Prices were available within the past 7 days and start at $178 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Sep 26 - Tue, Sep 30
STL
St. Louis
SGU
St. George
$299 Roundtrip, found 2 days ago
$299
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 26 from St. Louis to St. George, returning Tue, Sep 30, priced at $299 found 2 days ago
United
Fri, Sep 26 - Tue, Sep 30
STL
St. Louis
SGU
St. George
$305 Roundtrip, found 2 days ago
$305
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 26 from St. Louis to St. George, returning Tue, Sep 30, priced at $305 found 2 days ago
United
Fri, Sep 26 - Tue, Sep 30
STL
St. Louis
SGU
St. George
$307 Roundtrip, found 2 days ago
$307
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 26 from St. Louis to St. George, returning Tue, Sep 30, priced at $307 found 2 days ago
United
Sat, Oct 4 - Tue, Oct 21
STL
St. Louis
SGU
St. George
$338 Roundtrip, found 2 hours ago
$338
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Oct 4 from St. Louis to St. George, returning Tue, Oct 21, priced at $338 found 2 hours ago
United
Sat, Aug 23 - Sun, Aug 31
STL
St. Louis
SGU
St. George
$345 Roundtrip, found 4 days ago
$345
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 23 from St. Louis to St. George, returning Sun, Aug 31, priced at $345 found 4 days ago
United
Thu, Jul 17 - Thu, Jul 24
STL
St. Louis
SGU
St. George
$354 Roundtrip, found 1 day ago
$354
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jul 17 from St. Louis to St. George, returning Thu, Jul 24, priced at $354 found 1 day ago
Flights from St. Louis (STL) to St. George (SGU)
Origin airport
Lambert-St. Louis Intl.
Destination airport
St. George
Airlines serving
American Airlines, Delta, United
Popular airline
Delta
Distance
1264 mi

Frequently asked questions

How much is a United Airlines flight from Lambert-St. Louis Intl. Airport (STL) to St. George Airport (SGU)?
You'll find budget-friendly return United Airlines flights from $299 from STL to SGU by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $178 for a one-way journey.**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 STL to SGU with United Airlines?
United Airlines flights to St. George are generally more affordable in the off-peak months of January and December. Whether you're searching for a one-way or round-trip ticket, you could score a better deal then.
What is the cheapest time to book flights from Lambert-St. Louis Intl. Airport (STL) to St. George Airport (SGU) with United Airlines?
Search for cheap United Airlines flights from Lambert-St. Louis Intl. Airport (STL) to St. George Airport (SGU) one to three months prior to your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 United Airlines fly nonstop from Lambert-St. Louis Intl. Airport (STL) to St. George Airport (SGU)?
Select our "Nonstop" filter when browsing for direct United Airlines flights from STL to SGU. You can also compare other airlines offering the same direct trip.
What is the earliest United Airlines flight from STL to SGU?
Search United Airlines's earliest flights from STL to SGU by using the "Early Morning" and "Morning" filters. Not only will you arrive at your destination sooner, early departures also have a 20% less chance of being canceled.**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 United Airlines fly into in St. George?
St. George Airport (SGU) is the primary St. George gateway for United Airlines flights from Lambert-St. Louis Intl. Airport (STL).
Why fly with United Airlines from STL to SGU?
Depart from STL to SGU with United Airlines and you'll enjoy a host of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to use on select 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 United Airlines flight from Lambert-St. Louis Intl. Airport (STL) to St. George Airport (SGU)?
Changes are usually free within 24 hours of making your booking, but your airline may add a charge after that time. For more details about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to change your plans without being charged, check the "Changes included" and "No cancel fee" filters when planning your next getaway.

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*Available to One Key members.