Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to San Antonio from $80

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 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
11:40 am - 5:45 pm
SEA
-
SAT
4h 05mnonstop
Alaska Airlines Logo
6:46 pm - 9:22 pm
SAT
-
SEA
4h 36mnonstop
$197Alaska Airlines
sáb., feb. 7 - mié., feb. 11
American Airlines Logo
10:00 am - 8:04 pm
SEA
-
SAT
8h 04m1 stop
American Airlines Logo
7:00 pm - 11:51 pm
SAT
-
SEA
6h 51m1 stop
$198American Airlines
vie., feb. 6 - lun., feb. 9
Frontier Logo
12:34 pm - 7:33 pm
SEA
-
SAT
28h 59m1 stop
Frontier Logo
5:12 pm - 8:13 am
SAT
-
SEA
17h 01m2 stops
$203Frontier
dom., feb. 8 - mié., feb. 11
Delta Logo
1:30 pm - 11:29 pm
SEA
-
SAT
7h 59m1 stop
Delta Logo
7:35 am - 2:39 pm
SAT
-
SEA
9h 04m1 stop
$206Delta
lun., mar. 9 - vie., mar. 13
Multiple Airlines Logo
10:51 am - 12:25 pm
SEA
-
SAT
23h 34m2 stops
Multiple Airlines Logo
8:24 pm - 11:19 am
SAT
-
SEA
16h 55m1 stop
$211Multiple Airlines
jue., feb. 5 - dom., feb. 8
Delta Logo
8:30 am - 5:04 pm
SEA
-
SAT
6h 34m1 stop
Delta Logo
1:47 pm - 6:28 pm
SAT
-
SEA
6h 41m1 stop
$215Delta
vie., mar. 6 - vie., mar. 13
Frontier Logo
9:25 pm - 7:33 pm
SEA
-
SAT
20h 08m2 stops
Frontier Logo
8:24 pm - 11:19 am
SAT
-
SEA
16h 55m1 stop
$216Frontier
dom., feb. 1 - dom., feb. 8
Alaska Airlines Logo
11:09 am - 5:10 pm
SEA
-
SAT
4h 01mnonstop
Alaska Airlines Logo
6:06 pm - 8:43 pm
SAT
-
SEA
4h 37mnonstop
$217Alaska Airlines
vie., mar. 6 - mié., mar. 11
Frontier Logo
9:35 pm - 10:40 am
SEA
-
SAT
11h 05m1 stop
Frontier Logo
10:05 am - 8:21 pm
SAT
-
SEA
36h 16m2 stops
$218Frontier
dom., mar. 8 - jue., mar. 12
Multiple Airlines Logo
9:25 pm - 12:25 pm
SEA
-
SAT
13h 00m1 stop
Multiple Airlines Logo
6:46 pm - 9:22 pm
SAT
-
SEA
4h 36mnonstop
$219Multiple Airlines
jue., ene. 22 - mié., ene. 28

American Airlines flights from Seattle to San Antonio

Our best American Airlines deals on Seattle to San Antonio flight tickets
American Airlines
Feb 6
SEA10:00 amSeattle/Tacoma Intl
8h 04m
1 stop
SAT8:04 pmSan Antonio
Feb 9
SAT7:00 pmSan Antonio
6h 51m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
$198
Find similar
American Airlines
Jan 22
SEA11:55 amSeattle/Tacoma Intl
7h 57m
1 stop
SAT9:52 pmSan Antonio
Jan 26
SAT5:00 amSan Antonio
8h 01m
1 stop
SEA11:01 amSeattle/Tacoma Intl
$239
Find similar
American Airlines
Feb 14
SEA12:59 amSeattle/Tacoma Intl
6h 34m
1 stop
SAT9:33 amSan Antonio
Feb 19
SAT8:08 pmSan Antonio
6h 47m
1 stop
SEA12:55 amSeattle/Tacoma Intl
$259
Find similar

Frontier flights from Seattle to San Antonio

Our best Frontier deals on Seattle to San Antonio flight tickets
Frontier
Feb 8
SEA12:34 pmSeattle/Tacoma Intl
28h 59m
1 stop
SAT7:33 pmSan Antonio
Feb 11
SAT5:12 pmSan Antonio
17h 01m
2 stops
SEA8:13 amSeattle/Tacoma Intl
$203
Find similar
Frontier
Feb 1
SEA9:25 pmSeattle/Tacoma Intl
20h 08m
2 stops
SAT7:33 pmSan Antonio
Feb 8
SAT8:24 pmSan Antonio
16h 55m
1 stop
SEA11:19 amSeattle/Tacoma Intl
$216
Find similar
Frontier
Mar 8
SEA9:35 pmSeattle/Tacoma Intl
11h 05m
1 stop
SAT10:40 amSan Antonio
Mar 12
SAT10:05 amSan Antonio
36h 16m
2 stops
SEA8:21 pmSeattle/Tacoma Intl
$218
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated enero 6, 2026.
Use the filters below to find and compare flights from Seattle to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

sáb. 2/7

11:40 am-5:45 pm

Nonstop4h 05m

San Antonio

mié. 2/11

6:46 pm-9:22 pm

Nonstop4h 36m

$197

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

vie. 2/6

10:00 am-8:04 pm

1 stop8h 04m

San Antonio

lun. 2/9

7:00 pm-11:51 pm

1 stop6h 51m

$198

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

dom. 2/8

12:34 pm-7:33 pm

1 stop28h 59m

San Antonio

mié. 2/11

5:12 pm-8:13 am

2 stops17h 01m

$203

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 3/9

1:30 pm-11:29 pm

1 stop7h 59m

San Antonio

vie. 3/13

7:35 am-2:39 pm

1 stop9h 04m

$206

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

jue. 2/5

10:51 am-12:25 pm

2 stops23h 34m

San Antonio

dom. 2/8

8:24 pm-11:19 am

1 stop16h 55m

$211

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

vie. 3/6

8:30 am-5:04 pm

1 stop6h 34m

San Antonio

vie. 3/13

1:47 pm-6:28 pm

1 stop6h 41m

$215

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

dom. 2/1

9:25 pm-7:33 pm

2 stops20h 08m

San Antonio

dom. 2/8

8:24 pm-11:19 am

1 stop16h 55m

$216

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

vie. 3/6

11:09 am-5:10 pm

Nonstop4h 01m

San Antonio

mié. 3/11

6:06 pm-8:43 pm

Nonstop4h 37m

$217

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

dom. 3/8

9:35 pm-10:40 am

1 stop11h 05m

San Antonio

jue. 3/12

10:05 am-8:21 pm

2 stops36h 16m

$218

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

jue. 1/22

9:25 pm-12:25 pm

1 stop13h 00m

San Antonio

mié. 1/28

6:46 pm-9:22 pm

Nonstop4h 36m

$219

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Antonio from

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

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Seattle during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $257.

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 Wednesday when prices can be found for as low as $354. 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 $467.

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 morning, with an average ticket price of $404. Departure times in the morning 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 $334 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 January 2026, prices for Seattle to San Antonio flights are approximately 19% cheaper 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

$368

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 $368. The best round-trip flight deal from Seattle to San Antonio found on momondo in the last 72 hours is $217.
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?

  • 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?

  • What is the most popular airline from Seattle to 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
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $163Free CancellationRating
6.3
8,277 reviews
Search Spirit Airlines flights
FrontierPriceFrom $164Free CancellationRating
5.7
3,064 reviews
Search Frontier flights
DeltaPriceFrom $172Free CancellationRating
7.9
8,018 reviews
Search Delta flights
American AirlinesPriceFrom $180Free CancellationRating
7.2
11,083 reviews
Search American Airlines flights
SouthwestPriceFrom $194Free CancellationRating
8.0
4,247 reviews
Search Southwest flights
Hawaiian AirlinesPriceFrom $197Free CancellationRating
7.8
2,825 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $201Free CancellationRating
7.4
9,134 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $223Free CancellationRating
8.0
11,651 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to San Antonio

    Alaska Airlines operates around 2 flights from Seattle to San Antonio every week. The average price of these flights found in the last 72 hours has been $398, but momondo users have found Alaska Airlines deals from Seattle to San Antonio from as low as $223 round-trip. Alaska Airlines has been scored 8.0/10 in 11,651 reviews.

  • Hawaiian Airlines Flights From Seattle to San Antonio

    Hawaiian Airlines (7.8/10 from 2,825 reviews) operates around 2 flights from Seattle to San Antonio in any given week. The average Hawaiian Airlines airfare for this route is around $377, with deals from around $197 rare but found on momondo. Referenced prices are for round-trip Seattle to San Antonio flight searches in the last 72 hours.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Schertz
Pleasanton

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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
jue. 2/5
jue. 2/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States