$143 Cheap Southwest Airlines flights Milwaukee (MKE) to San Antonio (SAT)

Landing cheap one-way Southwest Airlines flights from MKE to SAT from $143 on Expedia is easy — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $194 for your next exciting getaway.**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.

Look for one-way or round-trip flights to San Antonio in January or September. You could find a cheap fare with Southwest Airlines during these off-peak times.

Search for affordable Southwest Airlines flights from General Mitchell Intl. Airport (MKE) to San Antonio Intl. Airport (SAT) one to three months ahead of 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. Regardless of fare class and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive 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.

Enter your dates, press search and select “Nonstop” on Expedia to browse any direct flights from MKE to SAT with Southwest Airlines or other airlines.

Search Southwest Airlines’s earliest flights from MKE to SAT by selecting our “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be 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.

Get on a Southwest Airlines flight from General Mitchell Intl. Airport (MKE) to San Antonio, and you’re most likely to land at San Antonio Intl. Airport (SAT). This is the airline’s main hub in this city.

Changes are usually free within 24 hours of booking, but your airline may charge you after that time. For further information about modifying your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to make changes without additional costs, check the “Changes included” or “No cancel fee” filter when organizing your trip.