$93 Cheap Flights from Seattle (SEA) to San Antonio (SAT)

View $93 flight on Wed, Oct 29, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to San Antonio International Airport (SAT)

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Cheap Flights from Seattle to San Antonio (SEA-SAT)

Prices were available within the past 7 days and start at $93 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Oct 27 - Tue, Oct 28
SEA
Seattle
SAT
San Antonio
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Oct 27 from Seattle to San Antonio, returning Tue, Oct 28, priced at $189 found 1 hour ago
Southwest Airlines
Tue, Oct 7 - Wed, Oct 8
SEA
Seattle
SAT
San Antonio
$190 Roundtrip, found 1 hour ago
$190
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Oct 7 from Seattle to San Antonio, returning Wed, Oct 8, priced at $190 found 1 hour ago
United
Thu, Nov 20 - Wed, Dec 3
SEA
Seattle
SAT
San Antonio
$192 Roundtrip, found 7 hours ago
$192
Roundtrip
found 7 hours ago
Select United flight, departing Thu, Nov 20 from Seattle to San Antonio, returning Wed, Dec 3, priced at $192 found 7 hours ago
Bargain Flight
Wed, Oct 1 - Sat, Oct 11
SEA
Seattle
SAT
San Antonio
$195 Roundtrip, found 6 hours ago
$195
Roundtrip
found 6 hours ago
Select Bargain Flight flight, departing Wed, Oct 1 from Seattle to San Antonio, returning Sat, Oct 11, priced at $195 found 6 hours ago
American Airlines
Tue, Sep 30 - Thu, Oct 2
SEA
Seattle
SAT
San Antonio
$195 Roundtrip, just found
$195
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 30 from Seattle to San Antonio, returning Thu, Oct 2, priced at $195 just found
Southwest Airlines
Thu, Nov 6 - Sat, Nov 8
SEA
Seattle
SAT
San Antonio
$196 Roundtrip, found 6 days ago
$196
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Thu, Nov 6 from Seattle to San Antonio, returning Sat, Nov 8, priced at $196 found 6 days ago
American Airlines
Wed, Oct 1 - Fri, Oct 3
SEA
Seattle
SAT
San Antonio
$196 Roundtrip, just found
$196
Roundtrip
just found
Select American Airlines flight, departing Wed, Oct 1 from Seattle to San Antonio, returning Fri, Oct 3, priced at $196 just found
Alaska Airlines
Wed, Oct 8 - Sat, Oct 18
SEA
Seattle
SAT
San Antonio
$197 Roundtrip, just found
$197
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 8 from Seattle to San Antonio, returning Sat, Oct 18, priced at $197 just found
Southwest Airlines
Fri, Sep 26 - Sun, Sep 28
SEA
Seattle
SAT
San Antonio
$200 Roundtrip, just found
$200
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Sep 26 from Seattle to San Antonio, returning Sun, Sep 28, priced at $200 just found
Southwest Airlines
Tue, Oct 7 - Wed, Oct 8
SEA
Seattle
SAT
San Antonio
$201 Roundtrip, found 1 hour ago
$201
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Oct 7 from Seattle to San Antonio, returning Wed, Oct 8, priced at $201 found 1 hour ago

Find the cheapest month to fly from Seattle (SEA) to San Antonio (SAT)

September is typically the cheapest month to fly

From $94 - $179 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Antonio

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Antonio Intl. SAT. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $224
SAT
San Antonio Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $224
Flights from Seattle (SEA) to San Antonio (SAT)
Origin airport
Seattle - Tacoma Intl.
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$189
Distance
1773 mi
Average flight time
6 hours 4 mins

Seattle to San Antonio Flights

The cheapest times to fly from Seattle to San Antonio

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 Seattle to San Antonio are during the month of October. You can find some of the cheapest flights from Seattle to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to San Antonio

Sunday is one of the best days to book for cheap flights from Seattle to San Antonio: 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 Seattle to San Antonio

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 Seattle to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $93 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 Seattle to San Antonio 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 Seattle to San Antonio 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 Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT) cost?
Book cheap return flights starting from $192 from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on August 19 2025 and touching down at SAT. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SEA to SAT?
The cheapest flights from SEA to SAT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
When heading out of Seattle - Tacoma Intl. Airport (SEA), you can hop on a direct flight to San Antonio Intl. Airport (SAT) with Alaska Airlines.
What is the cheapest airline that flies from SEA to SAT?
With fares starting at $119 for a one-way flight from SEA to SAT, Alaska Airlines is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on October 15 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
On average you can take your pick of 5 direct flights each week from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT). For more options, consider flights with layovers. Enter your dates on Expedia and then filter your search to show one or two stops.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
Flights between SEA and SAT are busiest at 8 AM. If you're after a less crowded experience and potentially cheaper fares, choose a time when demand is lower.
What day of the week has the most flights from SEA to SAT?
Friday has the most flights from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT). Consider traveling on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
Hop on the earliest flight at around 8:01AM UTC-8, heading out of Seattle - Tacoma Intl. Airport (SEA). You'll be traveling for approximately 4h 6m, touching down at San Antonio Intl. Airport (SAT) at approximately 2:07PM UTC-6.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
It takes about 4 hours and 6 minutes to fly the 1,800 mi from SEA to SAT.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
Select a flight from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time 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.
What airports do you fly into for San Antonio from Seattle - Tacoma Intl. Airport (SEA)?
San Antonio Intl. Airport (SAT) is the only airport in San Antonio with direct flights from Seattle - Tacoma Intl. Airport (SEA). Check out the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT) last-minute?
Booking your plane ticket from SEA to SAT just before your journey is usually more expensive. But if there's some wiggle room with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a SEA to SAT flight and hotel package?
Booking a SEA to SAT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our wide range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to San Antonio Intl. Airport (SAT)?
If you reserved your SEA to SAT flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket 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, visit our Customer Service portal for further details.

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*Available to One Key members.