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$84+ Cheap flights from Seattle to San Antonio (SEA - SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
dic. 26 — ene. 21
vie. 12/26
vie. 1/2
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Antonio are usually found in August or September, booked 69 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Seattle to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$215
(Delta)

One-way from

$84
(eDestinos)

Popular in

December

Cheapest in

August

Average price

$405

Good round-trip deal

$277 or less

Good one-way deal

$148 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Antonio flights.
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From Seattle/Tacoma Intl to San Antonio
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One-way flight from Seattle/Tacoma Intl to San Antonio
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Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Antonio.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Antonio.
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Find flight deals from Seattle to San Antonio

Cheapest flights from Seattle to San Antonio
Explore the most affordable flight options available from Seattle to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1112:48 pmSEA - SAT
2 stops22h 08mFrontier
vie. 12/129:25 pmSAT - SEA
1 stop21h 11mFrontier
Deal found 11/25$219
This Kiwi.com deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/811:01 amSEA - SAT
1 stop28h 04mMultiple Airlines
jue. 12/182:09 pmSAT - SEA
1 stop24h 21mMultiple Airlines
Deal found 11/25$220
This Kiwi.com deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/811:01 amSEA - SAT
1 stop28h 04mMultiple Airlines
dom. 12/147:56 pmSAT - SEA
1 stop17h 57mMultiple Airlines
Deal found 11/25$223
This Trip.com deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/41:09 pmSEA - SAT
1 stop27h 51mFrontier
jue. 12/117:56 pmSAT - SEA
1 stop17h 57mFrontier
Deal found 11/24$226
This Trip.com deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/212:54 pmSEA - SAT
1 stop7h 23mFrontier
mar. 12/3012:18 pmSAT - SEA
1 stop26h 12mFrontier
Deal found 11/24$227
This Kiwi.com deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1112:48 pmSEA - SAT
2 stops20h 54mMultiple Airlines
vie. 12/129:25 pmSAT - SEA
1 stop21h 11mMultiple Airlines
Deal found 11/25$228

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 26, 2025.
Use the filters below to find and compare flights from Seattle to San Antonio that are best for you.

Fly from

Seattle

Fly to

San Antonio

Route

Depart

Return

Price

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/26

10:59 pm-9:50 am

1 stop8h 51m

San Antonio

mié. 1/28

4:40 pm-11:22 pm

1 stop8h 42m

$215

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/26

2:05 pm-9:55 pm

1 stop5h 50m

San Antonio

mié. 1/28

6:10 am-10:45 am

1 stop6h 35m

$217

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/5

11:03 pm-5:05 am

Nonstop4h 02m

San Antonio

jue. 1/22

6:46 pm-9:22 pm

Nonstop4h 36m

$237

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/5

11:03 pm-5:05 am

Nonstop4h 02m

San Antonio

lun. 1/12

6:46 pm-9:22 pm

Nonstop4h 36m

$237

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

jue. 2/12

5:30 am-1:43 pm

1 stop6h 13m

San Antonio

mar. 2/17

7:35 am-2:44 pm

1 stop9h 09m

$238

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/26

12:57 pm-9:21 pm

1 stop6h 24m

San Antonio

mié. 1/28

1:20 pm-9:12 pm

2 stops9h 52m

$242

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

dom. 12/7

6:00 am-5:15 pm

1 stop9h 15m

San Antonio

mié. 12/17

6:00 pm-11:25 pm

1 stop7h 25m

$256

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

sáb. 12/6

2:15 pm-11:49 pm

1 stop7h 34m

San Antonio

mié. 12/17

6:00 pm-11:25 pm

1 stop7h 25m

$256

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

lun. 1/5

11:03 pm-5:05 am

Nonstop4h 02m

San Antonio

mar. 1/6

6:25 am-9:05 am

Nonstop4h 40m

$271

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

vie. 12/12

1:46 pm-10:59 pm

1 stop7h 13m

San Antonio

mar. 12/16

1:34 pm-9:00 pm

2 stops9h 26m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Seattle to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to San Antonio in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-San Antonio flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Seattle-San Antonio flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Seattle-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-San Antonio flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to San Antonio

How far ahead should I book a flight from Seattle to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to San Antonio. Price data was last updated on November 21, 2025.

Booking 69 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $123). Flying from Seattle to San Antonio in June is currently the most expensive (average of $222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SAT?

Find hourly flight availability from Seattle to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 26, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 34% on flights from Seattle to San Antonio by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Seattle to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Seattle to San Antonio. Price data was last updated on November 25, 2025.

Travelers seeking maximum savings on their Seattle to San Antonio flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Seattle to San Antonio flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to San Antonio trip
Airports
SEA

Plan to arrive at SEA at least two hours before your flight due to potentially long security lines.

Read more about SEAby Brandon Schultz
SAT

Use rideshare services from SAT for a convenient and quick 15-minute trip to downtown San Antonio.

Read more about SATby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated noviembre 26, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Seattle to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,354 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,814 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,038 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to San Antonio?

    San Antonio is the airport most travelers will use when flying to San Antonio from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to San Antonio (SAT) should be relatively easy as there are 6 daily flights to San Antonio from 8 different airlines. 4h 00m is how long a flight from Seattle to San Antonio will take if you book a nonstop flight.

  • How popular is this Seattle to San Antonio flight route?

    Within the past month, 9 users have taken a look at flights from Seattle/Tacoma Intl to San Antonio.

  • How long is the flight from Seattle to San Antonio?

    Delta, Southwest, and Alaska Airlines can get you from Seattle to San Antonio in just under 4h 02m. Your travel time can differ by up to 4h 49m. The distance between Seattle and San Antonio is about 1772 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to San Antonio round-trip?

    Currently priced at $130, Spirit Airlines will fly you from Seattle to San Antonio and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $164 and $176, respectively. Users have found that Spirit Airlines is 62% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Seattle to San Antonio?

    Before booking your flight to San Antonio from Seattle, check out the most reliable airlines to get you to your destination on time: Air Tahiti Nui (90%), Qatar Airways (89%), Alaska Airlines( 88%).

  • What are the cheapest flights from Seattle to San Antonio?

    Looking for the cheapest flight from Seattle to San Antonio? While on average our users pay $294, our data indicates the cheapest price to be $148. The most popular route (Seattle/Tacoma Intl - San Antonio), is priced around $165.

  • Where are the most common layover locations when flying from Seattle to San Antonio?

    Of the flights from Seattle to San Antonio that have layovers, most of them stop in Salt Lake City.

  • What are some popular things to do or see while on a layover in Salt Lake City?

    Temple Square, Hogle Zoo, and Salt Lake Temple are currently the most popular points of interest in Salt Lake City at the moment. Temple Square, Hogle Zoo and Salt Lake Temple are located about 4.7 mi, 9.1 mi, and 4.8 mi, respectively from Salt Lake City if you are interested in checking them out. Those landing in Salt Lake City looking to spend some time exploring during their layover can rent a car for about $46 per day.

  • Where are the least popular layover locations for Seattle to San Antonio flights?

    The least popular layover on flights from Seattle to San Antonio is Dallas.

  • Can I find deals for flights from Seattle to San Antonio that include hotel bookings?

    Yes. In addition to deals on Seattle to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Antonio.

  • Can I find deals for business class flights from Seattle to San Antonio?

    Yes. Cheapflights offers flight deals from Seattle to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $123). Flying from Seattle to San Antonio in June is currently the most expensive (average of $222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

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

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Alternative routes for Seattle to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Seattle to San Antonio

Discover the top 8 airlines that operate flights from Seattle to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$130Average$213FlexibilityNo cancel feeOn-time65%
FrontierCheapest$164Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$176Average$264FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$195Average$299FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$196Average$358FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$197Average$377FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$201Average$301FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$237Average$422FlexibilityNo cancel feeOn-time75%

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