$178 Cheap Flights from St. George (SGU) to St. Louis (STL)

View $178 flight on Tue, Mar 31, 2026Opens in a new window

Popular airlines from St. George Regional Airport (SGU) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from St. George to St. Louis (SGU-STL)

Prices were available within the past 7 days and start at $178 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Aug 28 - Sun, Aug 31
SGU
St. George
STL
St. Louis
$258 Roundtrip, found 2 days ago
$258
Roundtrip
found 2 days ago
Select United flight, departing Thu, Aug 28 from St. George to St. Louis, returning Sun, Aug 31, priced at $258 found 2 days ago
American Airlines
Fri, Oct 31 - Wed, Nov 5
SGU
St. George
STL
St. Louis
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 31 from St. George to St. Louis, returning Wed, Nov 5, priced at $258 found 1 day ago
United
Thu, Aug 28 - Sun, Aug 31
SGU
St. George
STL
St. Louis
$264 Roundtrip, found 2 days ago
$264
Roundtrip
found 2 days ago
Select United flight, departing Thu, Aug 28 from St. George to St. Louis, returning Sun, Aug 31, priced at $264 found 2 days ago
United
Thu, Aug 28 - Sun, Aug 31
SGU
St. George
STL
St. Louis
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select United flight, departing Thu, Aug 28 from St. George to St. Louis, returning Sun, Aug 31, priced at $279 found 2 days ago
Delta
Wed, Aug 27 - Tue, Sep 2
SGU
St. George
STL
St. Louis
$283 Roundtrip, found 2 days ago
$283
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Aug 27 from St. George to St. Louis, returning Tue, Sep 2, priced at $283 found 2 days ago
Delta
Fri, Oct 31 - Sun, Nov 2
SGU
St. George
STL
St. Louis
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Oct 31 from St. George to St. Louis, returning Sun, Nov 2, priced at $289 found 4 days ago
American Airlines
Fri, Oct 31 - Wed, Nov 5
SGU
St. George
STL
St. Louis
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 31 from St. George to St. Louis, returning Wed, Nov 5, priced at $299 found 1 day ago
United
Wed, Sep 10 - Tue, Sep 16
SGU
St. George
STL
St. Louis
$301 Roundtrip, found 5 days ago
$301
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 10 from St. George to St. Louis, returning Tue, Sep 16, priced at $301 found 5 days ago
American Airlines
Fri, Sep 5 - Sun, Sep 7
SGU
St. George
STL
St. Louis
$305 Roundtrip, found 4 days ago
$305
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep 5 from St. George to St. Louis, returning Sun, Sep 7, priced at $305 found 4 days ago
Delta
Fri, Sep 5 - Mon, Sep 8
SGU
St. George
STL
St. Louis
$307 Roundtrip, found 4 days ago
$307
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 5 from St. George to St. Louis, returning Mon, Sep 8, priced at $307 found 4 days ago
Flights from St. George (SGU) to St. Louis (STL)
Origin airport
St. George
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$258
Distance
1264 mi

St. George to St. Louis Flights

The cheapest times to fly from St. George to St. Louis

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 St. Louis are during the month of August. You can find some of the cheapest flights from St. George to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. George to St. Louis

Sunday is one of the best days to book for cheap flights from St. George to St. Louis: 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 St. Louis

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 St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $178 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 St. Louis 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 St. Louis 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 Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $178 or cheap return flight from $258 from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL)?
Flying in August can help you save, as it's the cheapest month for flights between SGU and STL. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from SGU to STL. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL)?
Nonstop flights from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SGU to STL?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, airline and other factors.*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 Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL) that takes off before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**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 Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your trip to book a ticket from SGU to STL generally means paying more. While it's possible to find some last-minute discounts, there's no guarantee. Be flexible with your itinerary to boost your chances of snagging a bargain.
Is it cheaper to book a SGU to STL flight and hotel package?
Securing a SGU to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our wide range of accommodations and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. George Airport (SGU) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your SGU to STL flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.