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$98+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Antonio are usually found in January or August, booked 87 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

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 July 1, 2025.

Round-trip from

$195
(Delta)

One-way from

$98
(Delta)

Popular in

December

Cheapest in

January

Average price

$358

Good round-trip deal

$377 or less

Good one-way deal

$238 or less
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. 3% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 1, 2025.

This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/232:24 pmSEA - SAT
1 stop7h 26mDelta
Wed 8/204:00 pmSAT - SEA
1 stop8h 25mDelta
Deal found 6/30$195
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1410:45 pmSEA - SAT
1 stop8h 10mSouthwest
Wed 8/205:00 pmSAT - SEA
2 stops9h 05mSouthwest
Deal found 6/30$200
This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/36:25 amSEA - SAT
1 stop10h 49mFrontier
Tue 7/86:59 pmSAT - SEA
1 stop6h 43mFrontier
Deal found 6/29$230
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:43 pmSEA - SAT
1 stop7h 13mUnited Airlines
Fri 11/74:24 pmSAT - SEA
2 stops8h 46mUnited Airlines
Deal found 6/29$232
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Thu 8/1412:33 pmSEA - SAT
Nonstop4h 04mHawaiian Airlines
Wed 8/206:30 amSAT - SEA
Nonstop4h 25mHawaiian Airlines
Deal found 6/30$233
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1312:33 pmSEA - SAT
Nonstop4h 04mMultiple Airlines
Sat 8/166:59 pmSAT - SEA
1 stop6h 43mMultiple Airlines
Deal found 6/30$236
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/313:38 pmSEA - SAT
1 stop6h 20mAmerican Airlines
Thu 8/78:36 pmSAT - SEA
1 stop6h 20mAmerican Airlines
Deal found 6/30$239
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:36 pmSEA - SAT
Nonstop4h 04mAlaska Airlines
Sun 8/247:42 pmSAT - SEA
Nonstop4h 23mAlaska Airlines
Deal found 6/30$257
This Justfly.com deal was found by Cheapflights users on 6/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/185:30 pmSEA - SAT
1 stop14h 38mSpirit Airlines
Mon 7/217:52 pmSAT - SEA
1 stop22h 33mSpirit Airlines
Deal found 6/30$264

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 July 1, 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

Wed 7/23

2:24 pm-11:50 pm

1 stop7h 26m

San Antonio

Wed 8/20

4:00 pm-10:25 pm

1 stop8h 25m

$195

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 8/14

10:45 pm-8:55 am

1 stop8h 10m

San Antonio

Wed 8/20

5:00 pm-12:05 am

2 stops9h 05m

$200

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Sun 9/7

11:58 pm-8:57 am

1 stop6h 59m

San Antonio

Tue 9/9

11:45 am-5:31 pm

1 stop7h 46m

$227

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 8/14

12:33 pm-6:37 pm

Nonstop4h 04m

San Antonio

Wed 8/20

6:30 am-8:55 am

Nonstop4h 25m

$233

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 8/13

12:33 pm-6:37 pm

Nonstop4h 04m

San Antonio

Sat 8/16

6:59 pm-11:42 pm

1 stop6h 43m

$236

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 8/14

12:33 pm-6:37 pm

Nonstop4h 04m

San Antonio

Tue 8/19

7:37 pm-9:53 pm

Nonstop4h 16m

$237

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 7/31

3:38 pm-11:58 pm

1 stop6h 20m

San Antonio

Thu 8/7

8:36 pm-12:56 am

1 stop6h 20m

$239

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 8/29

6:17 am-7:33 pm

1 stop11h 16m

San Antonio

Mon 9/1

8:18 pm-11:01 pm

1 stop28h 43m

$242

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 7/18

5:30 pm-10:08 am

1 stop14h 38m

San Antonio

Mon 7/21

7:52 pm-4:25 pm

1 stop22h 33m

$264

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 8/13

5:30 am-1:39 pm

1 stop6h 09m

$98

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 17 results
1
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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

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 June 27, 2025.

Booking 87 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 $295). Flying from Seattle to San Antonio in March is currently the most expensive (average of $376). 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 July 1, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 33% on flights from Seattle to San Antonio by exploring options for tickets at noon.

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 June 29, 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.

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 July 1, 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
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,974 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.8
Good
2,538 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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 4 daily flights to San Antonio from 8 different airlines. 3h 58m 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, 10 users have taken a look at flights from Seattle/Tacoma Intl to San Antonio.

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

    Currently priced at $195, Delta will fly you from Seattle to San Antonio and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $200 and $227, respectively. Users have found that Delta is 45% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to San Antonio one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from Frontier and Southwest, as they are both options that can get you from Seattle to San Antonio for a low price.

  • 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: Qatar Airways (95%), Alaska Airlines (90%), Finnair( 89%).

  • 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 $672, our data indicates the cheapest price to be $188. The most popular route (Seattle/Tacoma Intl - San Antonio), is priced around $190.

  • 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, Salt Lake Temple, and Hogle Zoo are currently the most popular points of interest in Salt Lake City at the moment. Temple Square, Salt Lake Temple and Hogle Zoo are located about 4.7 mi, 4.8 mi, and 9.1 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 $57 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 $295). Flying from Seattle to San Antonio in March is currently the most expensive (average of $376). 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

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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$112Average$199FlexibilityNo cancel feeOn-time65%
FrontierCheapest$129Average$245FlexibilityNo cancel feeOn-time62%
DeltaCheapest$176Average$268FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$196Average$293FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$332FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$222Average$384FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$223Average$398FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$238Average$428FlexibilityNo cancel feeOn-time75%

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