Cheap Southwest Airlines flights Santa Rosa (STS) to St. George (SGU)

You’ll find affordable round-trip Southwest Airlines flights from STS to SGU by organizing your results from “Price (lowest to highest)” on Expedia. Or look for bargains 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.

Southwest Airlines flights to St. George are often more affordable in the off-peak months of January and December. Whether you’re in search of a round-trip or one-way ticket, you could score a better deal then.

For cheap Southwest Airlines fares from Sonoma County Airport (STS) to St. George Airport (SGU), start searching one to three months before your planned departure. Reserving 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 impact how much you pay. Sunday is generally 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.

Click on the “Nonstop” filter when looking for direct Southwest Airlines flights from STS to SGU. It’s also a good way to compare other carriers servicing the same nonstop trip.

Filter your results by “Early Morning” and “Morning” to see the earliest departures from STS to SGU. Jetting off early means flight cancellations are less likely.**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.

Southwest Airlines flights from Sonoma County Airport (STS) to St. George come in to St. George Airport (SGU). This is the main gateway here.

Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that time. For more details 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 costs, tick the “Changes included” and “No cancel fee” filters when organizing your trip.