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$109+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
Jun 5 — Jun 121
Fri 6/5
Fri 6/12
1 adult, Economy
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Find cheap flights from Seattle to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Antonio are usually found in September or August, booked 47 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap 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 May 6, 2026.

This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 6/181:30 pm
SEA
-
SAT
1 stop8h 46m
Delta
Sun 6/216:03 pm
SAT
-
SEA
1 stop7h 56m
Delta
Deal found 4/30$255
This Southwest deal was found by Cheapflights users on 5/4. 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 6/115:30 am
SEA
-
SAT
2 stops9h 25m
Southwest
Mon 6/155:35 pm
SAT
-
SEA
1 stop5h 55m
Southwest
Deal found 5/4$256
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/512:45 pm
SEA
-
SAT
2 stops10h 25m
Southwest
Tue 6/95:55 pm
SAT
-
SEA
1 stop8h 45m
Southwest
Deal found 5/5$260
This eDestinos deal was found by Cheapflights users on 5/2. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:50 pm
SEA
-
SAT
1 stop21h 09m
Frontier
Mon 5/257:54 pm
SAT
-
SEA
1 stop16h 12m
Frontier
Deal found 5/2$262
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Mon 6/18:20 pm
SEA
-
SAT
2 stops20h 39m
Frontier
Mon 6/88:59 pm
SAT
-
SEA
1 stop15h 36m
Frontier
Deal found 5/2$264
This Southwest deal was found by Cheapflights users on 5/1. 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 9/1011:00 pm
SEA
-
SAT
2 stops9h 35m
Southwest
Tue 9/159:25 am
SAT
-
SEA
1 stop10h 30m
Southwest
Deal found 5/1$265
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Tue 6/238:12 pm
SEA
-
SAT
1 stop21h 59m
Frontier
Tue 6/308:56 pm
SAT
-
SEA
1 stop15h 39m
Frontier
Deal found 5/2$266
This Southwest deal was found by Cheapflights users on 5/2. 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.
Wed 8/58:30 am
SEA
-
SAT
1 stop11h 55m
Southwest
Tue 8/1112:55 pm
SAT
-
SEA
2 stops9h 20m
Southwest
Deal found 5/2$271
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 5/2311:30 am
SEA
-
SAT
1 stop11h 14m
Delta
Tue 6/24:47 pm
SAT
-
SEA
1 stop8h 08m
Delta
Deal found 4/30$272
This Delta deal was found by Cheapflights users on 5/2. 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.
Fri 7/173:10 pm
SEA
-
SAT
1 stop6h 44m
Delta
Sun 7/194:44 pm
SAT
-
SEA
1 stop9h 19m
Delta
Deal found 5/2$277
This Trip.com deal was found by Cheapflights users on 5/1. 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.
Fri 5/87:50 pm
SEA
-
SAT
1 stop21h 09m
Frontier
Mon 5/117:54 pm
SAT
-
SEA
1 stop15h 55m
Frontier
Deal found 5/1$278

Find 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 May 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(Delta)

One-way from

$109
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$381

Good round-trip deal

$457 or less

Good one-way deal

$248 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Antonio flights.
Search Deals
From Seattle/Tacoma Intl to San Antonio
Search Deals
One-way flight from Seattle/Tacoma Intl to San Antonio
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Antonio.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Antonio.
Search Deals

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 May 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

Cheapest round-trip

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Tue 6/2

11:59 pm-11:45 am

1 stop9h 46m

San Antonio

Fri 6/5

5:55 pm-12:10 am

1 stop8h 15m

$255

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 6/5

5:35 pm-1:35 am

1 stop6h 00m

San Antonio

Tue 6/9

5:55 pm-12:40 am

1 stop8h 45m

$255

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 6/24

7:15 am-5:13 pm

1 stop7h 58m

San Antonio

Wed 7/8

12:39 pm-6:33 pm

1 stop7h 54m

$307

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 6/19

2:25 pm-1:10 am

1 stop8h 45m

San Antonio

Wed 6/24

7:55 pm-12:30 am

1 stop6h 35m

$327

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 6/25

12:35 pm-11:52 pm

1 stop9h 17m

San Antonio

Mon 6/29

7:10 am-12:29 pm

1 stop7h 19m

$329

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Tue 6/30

11:55 am-12:30 am

2 stops10h 35m

San Antonio

Fri 7/3

9:40 pm-1:40 am

1 stop6h 00m

$333

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Wed 5/27

9:20 am-6:15 pm

2 stops6h 55m

San Antonio

Wed 6/3

5:55 pm-11:35 pm

2 stops7h 40m

$341
Quickest round-trip

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Fri 7/3

11:10 am-9:00 pm

2 stops7h 50m

San Antonio

Mon 7/6

6:30 pm-11:05 pm

1 stop6h 35m

$344

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Sun 6/14

8:05 pm-10:50 am

1 stop12h 45m

San Antonio

Wed 6/17

8:25 pm-12:40 am

1 stop6h 15m

$344

SeattleSan Antonio

SEA - SAT

SEASAT

Seattle/Tacoma Intl

Thu 6/11

5:30 am-4:55 pm

2 stops9h 25m

San Antonio

Tue 6/23

6:45 am-1:35 pm

2 stops8h 50m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 22 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Antonio flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

Booking 46 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, September is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $266). Flying from Seattle to San Antonio in November is currently the most expensive (average of $396). 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 May 6, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to San Antonio as you normally would.

How much does it cost to fly round-trip from Seattle to San Antonio?

The best insider tips for Seattle to San Antonio flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to San Antonio trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT

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 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 May 6, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta 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
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,332 reviews
Alaska Airlines
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
7.9
Good
4,305 reviews
Alaska Airlines
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,456 reviews
Alaska Airlines
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,684 reviews
Alaska Airlines
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.1
Good
11,666 reviews
Alaska Airlines
7.9
Good
12,332 reviews

Boarding

8.1

Comfort

7.8

Overall

7.9

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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.

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

    Within the past month, 12 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 and Southwest can get you from Seattle to San Antonio in just under 6h. Your travel time can differ by up to 3h 46m. 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 $84, Frontier will fly you from Seattle to San Antonio and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Delta - these airlines can fly you to your destination from $118 and $159, respectively. Users have found that Frontier is 75% 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 Frontier, with whom users have recently found tickets for as low as $74. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Seattle to San Antonio for a low price.

  • 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 $413, our data indicates the cheapest price to be $189. The most popular route (Seattle/Tacoma Intl - San Antonio), is priced around $250.

  • 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 Abravanel Hall are currently the most popular points of interest in Salt Lake City at the moment. Temple Square, Hogle Zoo and Abravanel Hall are located about 4.7 mi, 9.1 mi, and 4.7 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 $47 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, September is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $266). Flying from Seattle to San Antonio in November is currently the most expensive (average of $396). 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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Top 7 airlines flying from Seattle to San Antonio

Discover the top 7 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 May 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$253FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$118Average$377FlexibilityNo cancel feeOn-time85%
DeltaCheapest$159Average$273FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$380FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$196Average$346FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$201Average$299FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$217Average$382FlexibilityNo cancel feeOn-time75%

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