Cheap Alaska Airlines flights Seattle (SEA) to San Antonio (SAT)

Finding cheap one-way Alaska Airlines flights from SEA to SAT on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares 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.

January is one of the least expensive months to jet off to San Antonio with Alaska Airlines. You could also find fantastic deals on one-way and return fares in September.

Look for cheap Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT) one to three months prior to your departure date. 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 best day of the week 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 their travel 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.

Alaska Airlines offers direct flights from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT), with 5 departures every week. Just choose the “Nonstop” and “Airline” filters while searching on Expedia to find all direct Alaska Airlines flights to SAT.

Depart Seattle - Tacoma Intl. Airport (SEA) for San Antonio Intl. Airport (SAT) on a direct Alaska Airlines flight, and you’ll be airborne for about 4h 6m.

Setting off from SEA at 8:01AM UTC-8, the first Alaska Airlines flight to SAT arrives at 2:07PM UTC-6. Traveling early means you’ll be less likely to experience cancellations.* Not an early riser? The last Alaska Airlines flight from SEA to SAT departs at 8:01AM UTC-8 and touches down at 2:07PM UTC-6.*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.

Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to San Antonio arrive at San Antonio Intl. Airport (SAT). This is the main entry point here.

Taking off from SEA to SAT with Alaska Airlines comes with plenty of perks, such as top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be onboard a Boeing 737 MAX 9 or a Boeing 737-800 when flying Alaska Airlines from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT). However, keep in mind that a different aircraft may be assigned due to operational demands.

Typically, you can change or cancel your flight, although additional fees may apply if you booked more than 24 hours ago. Need flexible options? Apply the “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you have to alter your plans. To modify your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more information.