$91 Cheap Flights from San Antonio (SAT) to Seattle (SEA)

View $91 flight on Fri, Oct 24, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $91 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Nov 17 - Tue, Nov 18
SAT
San Antonio
SEA
Seattle
$160 Roundtrip, found 22 hours ago
$160
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Mon, Nov 17 from San Antonio to Seattle, returning Tue, Nov 18, priced at $160 found 22 hours ago
Frontier Airlines
Fri, Oct 24 - Sun, Oct 26
SAT
San Antonio
SEA
Seattle
$170 Roundtrip, found 2 hours ago
$170
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Oct 24 from San Antonio to Seattle, returning Sun, Oct 26, priced at $170 found 2 hours ago
Frontier Airlines
Fri, Oct 24 - Wed, Oct 29
SAT
San Antonio
SEA
Seattle
$185 Roundtrip, found 5 hours ago
$185
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Oct 24 from San Antonio to Seattle, returning Wed, Oct 29, priced at $185 found 5 hours ago
United
Sat, Oct 25 - Tue, Nov 4
SAT
San Antonio
SEA
Seattle
$188 Roundtrip, found 3 hours ago
$188
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Oct 25 from San Antonio to Seattle, returning Tue, Nov 4, priced at $188 found 3 hours ago
Frontier Airlines
Fri, Oct 24 - Sun, Nov 2
SAT
San Antonio
SEA
Seattle
$188 Roundtrip, found 5 hours ago
$188
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Oct 24 from San Antonio to Seattle, returning Sun, Nov 2, priced at $188 found 5 hours ago
Southwest Airlines
Wed, Nov 5 - Sat, Nov 15
SAT
San Antonio
SEA
Seattle
$189 Roundtrip, found 3 hours ago
$189
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Wed, Nov 5 from San Antonio to Seattle, returning Sat, Nov 15, priced at $189 found 3 hours ago
Southwest Airlines
Sat, Oct 25 - Wed, Oct 29
SAT
San Antonio
SEA
Seattle
$192 Roundtrip, found 16 hours ago
$192
Roundtrip
found 16 hours ago
Select Southwest Airlines flight, departing Sat, Oct 25 from San Antonio to Seattle, returning Wed, Oct 29, priced at $192 found 16 hours ago
Southwest Airlines
Mon, Nov 17 - Tue, Nov 18
SAT
San Antonio
SEA
Seattle
$193 Roundtrip, found 22 hours ago
$193
Roundtrip
found 22 hours ago
Select Southwest Airlines flight, departing Mon, Nov 17 from San Antonio to Seattle, returning Tue, Nov 18, priced at $193 found 22 hours ago
Delta
Sat, Nov 1 - Tue, Nov 4
SAT
San Antonio
SEA
Seattle
$195 Roundtrip, found 1 hour ago
$195
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Nov 1 from San Antonio to Seattle, returning Tue, Nov 4, priced at $195 found 1 hour ago
American Airlines
Sat, Nov 1 - Tue, Nov 4
SAT
San Antonio
SEA
Seattle
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Nov 1 from San Antonio to Seattle, returning Tue, Nov 4, priced at $197 found 1 hour ago

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

March is typically the cheapest month to fly

From $130 - $442 per traveler.

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $91 or cheap return flight from $160 from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
November is the most affordable month to fly from SAT to SEA. Traveling outside of peak seasons is often the key to finding a great deal.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
Take a nonstop flight with Alaska Airlines and journey straight from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA).
What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from SAT to SEA, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
On average, you can take your pick of 5 direct flights flying from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA) each week. If you don't see one that suits your schedule, consider catching a flight that has a layover. Customize your search results on Expedia to include one or two stops and choose the next best alternative.
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
More passengers fly between SAT and SEA at 3 PM than at any other time. Looking to skip the crowds? Pick a flight outside the busiest times and there's a chance you'll save on your ticket as well.
What day of the week has the most flights from SAT to SEA?
If you fly on a Friday, you'll get the biggest range of options for flights from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
Take the earliest flight at around 3:03PM UTC-6, departing from San Antonio Intl. Airport (SAT). You'll be traveling for roughly 4h 37m, reaching Seattle - Tacoma Intl. Airport (SEA) at approximately 5:40PM UTC-8.
How long does it take to fly from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
Flights from SAT to SEA have an average travel time of 4 hours and 37 minutes. The total distance between these two airports is 1,800 mi.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
To reach Seattle - Tacoma Intl. Airport (SEA) on schedule, select a flight that takes off from San Antonio Intl. Airport (SAT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Seattle from San Antonio Intl. Airport (SAT)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from San Antonio Intl. Airport (SAT). Consider your options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book a flight from SAT to SEA generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans to boost your chances of getting a bargain.
Is it cheaper to book a SAT to SEA flight and hotel package?
You can save money by booking a SAT to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your preferred accommodations and flights, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Seattle - Tacoma Intl. Airport (SEA)?
Usually, it's possible to cancel or reschedule your SAT to SEA flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
San Antonio Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$160
Distance
1773 mi
Average flight time
3 hours 32 mins

Book with confidence

Book with confidence

San Antonio to Seattle Flights

The cheapest times to fly from San Antonio to Seattle

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

 

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

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

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 San Antonio to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $91 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 San Antonio to Seattle 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 San Antonio to Seattle 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.

 

San Antonio to Seattle Flights

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