How many flights depart from Seattle to San Antonio on average per week?

The number of flights available between Seattle and San Antonio is 4 per week as of February 2026. The most frequent departure day is Wed, with 75% of weekly flights leaving on this day.

Which layover airport offers the lowest fares from Seattle to San Antonio?

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $222.

What airlines fly to San Antonio?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to San Antonio from Seattle according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 8 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Antonio?

Frontier and Delta are the most popular carriers operating from Seattle/Tacoma Intl to San Antonio

Which airport is the most popular layover for flights between Seattle and San Antonio?

Salt Lake City (SLC) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Seattle to San Antonio?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 5h 55m.

Which layover airport has the shortest connection time from Seattle to San Antonio?

Dallas (DFW) has the shortest average layover time for this route: 0h 58m.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Antonio Airport?

Prices for flights from Seattle/Tacoma Intl Airport to San Antonio Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Antonio Airport?

The number of operators available for flights from Seattle/Tacoma Intl Airport to San Antonio Airport is 8 as of February 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Antonio Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Antonio Airport.

What documentation or ID do you need to fly to San Antonio Airport?

The travel and health documents you'll need for your trip to San Antonio Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Antonio Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$76 Cheap Flights from Seattle to San Antonio in 2026

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:59 am - 9:33 am

SEA

SAT

6h 34m

1 stop

8:08 pm - 12:55 am

SAT

SEA

6h 47m

1 stop

$197American Airlines

Tue, Mar 10 - Wed, Mar 18

9:23 pm - 9:58 am

SEA

SAT

10h 35m

1 stop

11:35 am - 8:51 am

SAT

SEA

23h 16m

1 stop

$201Frontier

Thu, Feb 26 - Sun, Mar 1

11:57 pm - 8:33 am

SEA

SAT

6h 36m

1 stop

8:08 pm - 12:55 am

SAT

SEA

6h 47m

1 stop

$206American Airlines

Sat, Mar 7 - Mon, Mar 9

12:42 pm - 2:19 pm

SEA

SAT

23h 37m

1 stop

3:14 pm - 9:27 am

SAT

SEA

20h 13m

1 stop

$207Frontier

Mon, Apr 13 - Fri, Apr 17

10:42 am - 2:19 pm

SEA

SAT

25h 37m

2 stops

3:14 pm - 3:05 pm

SAT

SEA

25h 51m

1 stop

$210Frontier

Wed, Apr 15 - Sun, Apr 19

12:42 pm - 12:19 am

SEA

SAT

9h 37m

1 stop

6:45 am - 11:37 am

SAT

SEA

6h 52m

1 stop

$211Frontier

Thu, Apr 9 - Mon, Apr 13

10:08 pm - 4:03 pm

SEA

SAT

15h 55m

1 stop

7:45 am - 11:37 am

SAT

SEA

29h 52m

1 stop

$212Frontier

Wed, Mar 25 - Wed, Apr 1

2:00 pm - 11:43 pm

SEA

SAT

7h 43m

1 stop

5:59 pm - 12:01 am

SAT

SEA

8h 02m

1 stop

$215Delta

Fri, Mar 6 - Mon, Mar 9

6:57 pm - 2:19 pm

SEA

SAT

17h 22m

1 stop

3:34 pm - 9:27 am

SAT

SEA

19h 53m

1 stop

$217Frontier

Sat, May 2 - Sat, May 9

6:57 pm - 2:19 pm

SEA

SAT

17h 22m

1 stop

3:14 pm - 3:05 pm

SAT

SEA

25h 51m

1 stop

$218Frontier

Wed, May 13 - Sun, May 17

American Airlines flights from Seattle to San Antonio

Our best American Airlines deals on Seattle to San Antonio flight tickets

American Airlines

Mar 10

SEA12:59 amSeattle/Tacoma Intl

6h 34m

1 stop

SAT9:33 amSan Antonio

Mar 18

SAT8:08 pmSan Antonio

6h 47m

1 stop

SEA12:55 amSeattle/Tacoma Intl

$197

American Airlines

Mar 7

SEA11:57 pmSeattle/Tacoma Intl

6h 36m

1 stop

SAT8:33 amSan Antonio

Mar 9

SAT8:08 pmSan Antonio

6h 47m

1 stop

SEA12:55 amSeattle/Tacoma Intl

$206

American Airlines

Mar 10

SEA12:59 amSeattle/Tacoma Intl

6h 34m

1 stop

SAT9:33 amSan Antonio

Mar 15

SAT8:08 pmSan Antonio

6h 47m

1 stop

SEA12:55 amSeattle/Tacoma Intl

$268

Alaska Airlines flights from Seattle to San Antonio

Our best Alaska Airlines deals on Seattle to San Antonio flight tickets

Alaska Airlines

May 7

SEA10:51 amSeattle/Tacoma Intl

4h 14m

SAT5:05 pmSan Antonio

May 11

SAT6:01 pmSan Antonio

4h 34m

SEA8:35 pmSeattle/Tacoma Intl

$247

Alaska Airlines

May 13

SEA11:22 pmSeattle/Tacoma Intl

4h 07m

SAT5:29 amSan Antonio

May 17

SAT7:00 amSan Antonio

4h 35m

SEA9:35 amSeattle/Tacoma Intl

$277

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Tue 3/10

12:59 am-9:33 am

1 stop6h 34m

San Antonio

Wed 3/18

8:08 pm-12:55 am

1 stop6h 47m

$197

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 2/26

9:23 pm-9:58 am

1 stop10h 35m

San Antonio

Sun 3/1

11:35 am-8:51 am

1 stop23h 16m

$201

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Sat 3/7

11:57 pm-8:33 am

1 stop6h 36m

San Antonio

Mon 3/9

8:08 pm-12:55 am

1 stop6h 47m

$206

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Mon 4/13

12:42 pm-2:19 pm

1 stop23h 37m

San Antonio

Fri 4/17

3:14 pm-9:27 am

1 stop20h 13m

$207

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 4/15

10:42 am-2:19 pm

2 stops25h 37m

San Antonio

Sun 4/19

3:14 pm-3:05 pm

1 stop25h 51m

$210

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 4/9

12:42 pm-12:19 am

1 stop9h 37m

San Antonio

Mon 4/13

6:45 am-11:37 am

1 stop6h 52m

$211

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 3/25

10:08 pm-4:03 pm

1 stop15h 55m

San Antonio

Wed 4/1

7:45 am-11:37 am

1 stop29h 52m

$212

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 3/6

2:00 pm-11:43 pm

1 stop7h 43m

San Antonio

Mon 3/9

5:59 pm-12:01 am

1 stop8h 02m

$215

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Sat 5/2

6:57 pm-2:19 pm

1 stop17h 22m

San Antonio

Sat 5/9

3:34 pm-9:27 am

1 stop19h 53m

$217

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 5/13

6:57 pm-2:19 pm

1 stop17h 22m

San Antonio

Sun 5/17

3:14 pm-3:05 pm

1 stop25h 51m

$218

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How to get the cheapest flight ticket from Seattle to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Seattle during August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $256.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Monday when prices can be found for as low as $337. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $447.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Seattle to San Antonio in the afternoon for as low as $277. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the evening, with an average ticket price of $420. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Seattle/Tacoma Intl to San Antonio flight route?

Fly from Seattle/Tacoma Intl to San Antonio for the best Seattle/Tacoma Intl - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $333 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Seattle for as low as $247 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to San Antonio flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to San Antonio flight prices changed over time?

As of February 2026, prices for Seattle to San Antonio flights are approximately 35% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Antonio according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to San Antonio (SEA to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Antonio

Best Price Found	$188
Fastest flight time	4h 01m
Direct flights	Every day
Airports in San Antonio	1 airport

The best one-way flight to San Antonio from Seattle in the past 72 hours is $188. The best round-trip flight deal from Seattle to San Antonio found on momondo in the last 72 hours is $287.

The fastest flight from Seattle to San Antonio takes 4h 01m

Direct flights go from Seattle to San Antonio every day.

There is 1 airport in San Antonio. From Seattle there are direct flights to San Antonio (SAT).

Search flight deals

How far is Seattle/Tacoma Intl to San Antonio by plane?
There are 1785.1 mi between Seattle/Tacoma Intl and San Antonio. A reasonable flight in good conditions will take 4h 01m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Antonio Airport?
Prices for flights from Seattle/Tacoma Intl Airport to San Antonio Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Antonio Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to San Antonio Airport is 8 as of February 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The travel and health documents you'll need for your trip to San Antonio Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Antonio Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to San Antonio?
momondo data reveals that the most frequently booked plane model on the route from Seattle to San Antonio is Boeing 737 MAX 9, representing 39.02% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 21.95%, Boeing 737-800 Passenger/BBJ2 (winglets) at 15.45%, and Boeing 737 MAX 8 at 4.88%.
What is the most popular airline from Seattle to San Antonio?
momondo data reveals that the most frequently booked airline on the route from Seattle to San Antonio is Alaska Airlines, representing 49% of all bookings. The subsequent popular airlines are Delta at 17%, American Airlines at 10%, and Southwest at 8%.

Best airlines flying from Seattle to San Antonio

Compare and see reviews for airlines that fly from Seattle to San Antonio with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $84	Free Cancellation	Rating 5.7 3,052 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $118	Free Cancellation	Rating 7.8 2,832 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $138	Free Cancellation	Rating 7.9 8,180 reviews	Search Delta flights
Spirit Airlines	PriceFrom $163	Free Cancellation	Rating 6.3 8,444 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $178	Free Cancellation	Rating 7.4 9,273 reviews	Search United Airlines flights
American Airlines	PriceFrom $178	Free Cancellation	Rating 7.2 11,265 reviews	Search American Airlines flights
Southwest	PriceFrom $194	Free Cancellation	Rating 8.0 4,280 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 8.0 11,874 reviews	Search Alaska Airlines flights

Alaska Airlines Flights From Seattle to San Antonio
Alaska Airlines operates around 1 flight from Seattle to San Antonio every week. The average price of these flights found in the last 72 hours has been $383, but momondo users have found Alaska Airlines deals from Seattle to San Antonio from as low as $217 round-trip. Alaska Airlines has been scored 8.0/10 in 11,874 reviews.
Hawaiian Airlines Flights From Seattle to San Antonio
Hawaiian Airlines (7.8/10 from 2,832 reviews) operates around 2 flights from Seattle to San Antonio in any given week. The average Hawaiian Airlines airfare for this route is around $374, with deals from around $118 rare but found on momondo. Referenced prices are for round-trip Seattle to San Antonio flight searches in the last 72 hours.

New Braunfels

Kerrville

Boerne

Pleasanton

Schertz

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Antonio?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to San Antonio. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to San Antonio with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to San Antonio flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to San Antonio?

momondo helps you find the best flight between Seattle and San Antonio by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to San Antonio right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Antonio from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Seattle to San Antonio from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Antonio departing on 5/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Seattle to San Antonio

What is the cheapest month to fly to San Antonio?

What is the cheapest day to depart on your flight to San Antonio?

What is the cheapest time of day to depart on your flight to San Antonio?

What is the cheapest Seattle/Tacoma Intl to San Antonio flight route?

How far in advance should I book a flight to San Antonio?

What cabin class options are available on Seattle/Tacoma Intl to San Antonio flights?

How have Seattle to San Antonio flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Antonio?

What airlines fly to San Antonio?

Which airport is the most popular layover for flights between Seattle and San Antonio?

Which layover airport offers the lowest fares from Seattle to San Antonio?

Which layover airport has the shortest travel time from Seattle to San Antonio?

Which layover airport has the shortest connection time from Seattle to San Antonio?

How many flights depart from Seattle to San Antonio on average per week?

When to book flights from Seattle to San Antonio

Cheap Seattle to San Antonio (SEA to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Antonio

Best Price Found

Fastest flight time

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Airports in San Antonio

Best airlines flying from Seattle to San Antonio

Compare and see reviews for airlines that fly from Seattle to San Antonio with momondo

Alaska Airlines Flights From Seattle to San Antonio

Hawaiian Airlines Flights From Seattle to San Antonio

Traveling to a place near San Antonio?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Antonio?

Can I find flights from Seattle to San Antonio with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to San Antonio?

I’m not ready to book a flight from Seattle to San Antonio right now. Can momondo alert me if prices change?

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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