SEA - SAT

$122 Find Cheap Flights from Seattle to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to San Antonio departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Antonio.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Antonio.
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Everything you should know

Cheapest round-trip
$260
Typical prices: $378-$217
United Airlines
Thu 8/27Sun 8/30
SEA - SAT • 1 stop
Cheapest non-stop
$462
Typical prices: $607-$456
Alaska Airlines
Sat 6/13Sun 6/14
SEA - SAT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Use SEA Spot Saver for faster security at SEA.
Take the #5 VIA bus from SAT to downtown San Antonio.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $260 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines. Average duration is 4h 05m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $254 (round-trip)
Shortest trip • 6h 02m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
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Flight Deals

Cheap Flights from Seattle to San Antonio (SEA-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to San Antonio

Thu, Aug 27 - Sun, Aug 30
United Airlines Logo
1:16 pm - 9:59 pm
SEA
-
SAT
6h 43m
1 stop
United Airlines Logo
5:30 am - 10:01 am
SAT
-
SEA
6h 31m
1 stop
$260United Airlines
Wed, Jul 1 - Mon, Jul 6
Delta Logo
5:30 am - 1:40 pm
SEA
-
SAT
6h 10m
1 stop
Delta Logo
4:44 pm - 12:06 am
SAT
-
SEA
9h 22m
1 stop
$265Delta
Tue, Jul 21 - Tue, Jul 28
Southwest Logo
10:45 pm - 10:20 am
SEA
-
SAT
9h 35m
1 stop
Southwest Logo
5:55 pm - 11:30 pm
SAT
-
SEA
7h 35m
2 stops
$270Southwest
Wed, Jul 8 - Wed, Jul 15
Southwest Logo
5:15 am - 2:00 pm
SEA
-
SAT
6h 45m
1 stop
Southwest Logo
5:55 pm - 12:40 am
SAT
-
SEA
8h 45m
1 stop
$275Southwest
Wed, Jul 8 - Wed, Jul 15
Southwest Logo
5:15 am - 2:00 pm
SEA
-
SAT
6h 45m
1 stop
Southwest Logo
5:55 pm - 11:30 pm
SAT
-
SEA
7h 35m
2 stops
$280Southwest
Wed, Jun 17 - Sun, Jun 21
Southwest Logo
6:30 am - 5:15 pm
SEA
-
SAT
8h 45m
1 stop
Southwest Logo
7:40 pm - 12:50 am
SAT
-
SEA
7h 10m
1 stop
$285Southwest
Wed, Aug 5 - Wed, Aug 12
Southwest Logo
8:30 am - 10:25 pm
SEA
-
SAT
11h 55m
1 stop
Southwest Logo
1:30 pm - 9:15 pm
SAT
-
SEA
9h 45m
2 stops
$286Southwest
Wed, Jul 22 - Tue, Aug 4
Southwest Logo
6:30 am - 5:15 pm
SEA
-
SAT
8h 45m
1 stop
Southwest Logo
12:55 pm - 8:15 pm
SAT
-
SEA
9h 20m
2 stops
$290Southwest
Tue, Jul 28 - Sun, Aug 2
Delta Logo
6:05 am - 5:11 pm
SEA
-
SAT
9h 06m
1 stop
Delta Logo
4:44 pm - 10:05 pm
SAT
-
SEA
7h 21m
1 stop
$292Delta
Wed, Jul 15 - Wed, Aug 12
Southwest Logo
3:05 pm - 12:20 am
SEA
-
SAT
7h 15m
1 stop
Southwest Logo
12:55 pm - 8:15 pm
SAT
-
SEA
9h 20m
2 stops
$293Southwest
Booking Insights

KAYAK's insights & trends for Seattle to San Antonio flights

Get data-powered insights and trends into flights from Seattle to San Antonio to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to San Antonio departing in August.

What’s the cheapest day of the week to fly from Seattle to San Antonio?

The average price of all round-trip flights from Seattle to San Antonio clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to San Antonio, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Antonio, Thursday is the cheapest day to fly and Saturday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to San Antonio is September, where tickets cost $266 (return) on average. On the other hand, the most expensive months are May and November, where the average cost of round-trip tickets is $422 and $396 respectively.

Can I save money by flying with a layover from Seattle to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $392, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to San Antonio, you should book around 4 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to San Antonio

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAT

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.

Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonAugust
Cheapest flight$122
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Seattle to San Antonio

When to book flights from Seattle to San Antonio

Are your dates flexible? Find out the best times to travel from Seattle to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to San Antonio

  • Can I find long-term parking at Seattle Tacoma International Airport?

    SEA Airport has over 12,000 parking spaces for anyone looking to leave their car at the airport. These parking spaces are easily accessible from International Blvd and have bridges and pathways leading to the airport terminal. There is an option to reserve parking days before your flight, and if you’re a frequent flyer, you can qualify for discounts and other perks.

  • How do I make my flight from Seattle to San Antonio more sustainable?

    While flying is not the most sustainable way to travel, it is very difficult to avoid. Therefore, the onus is on you to make your flight more sustainable and do your best for the environment. You can start by booking a direct flight instead of connecting flights since connecting flights are often longer and result in more carbon emissions. Another way to make your trip more sustainable is by flying economy. It has a higher capacity and therefore carries more people reducing the number of overall flights.

  • How do I get wheelchair assistance at San Antonio International Airport?

    San Antonio International Airport offers free wheelchair services to anyone that may require one. To get these services, you will need to inform your airline or travel agent at least 48h before your flight is set to depart. That way, they will mark your record with a note informing the airport officials that you require special assistance. Upon seeing the information, the airport officials will make the necessary arrangements to ensure that you get a wheelchair as soon as your plane lands.

  • What is the fastest way to Seattle Tacoma International Airport from Downtown Seattle?

    Sea-Tac Airport is about 13 miles away from downtown Seattle. While there is a light rail that goes directly from Downtown to the airport, road transport provides the quickest way. Assuming normal traffic and weather conditions, it should take about 15min to get to the airport using the I-5S. A cab or driving to the airport would be most appropriate.

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

    In the last 7 days, the lowest price for a flight from Seattle to San Antonio was $122 for a one-way ticket and $260 for a round-trip.

  • Do I need a passport to fly between Seattle and San Antonio?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Seattle to San Antonio?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at San Antonio, also known as San Antonio.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to San Antonio?

    Alaska Airlines, Hawaiian Airlines, Delta, and American Airlines offer inflight Wi-Fi service on the Seattle to San Antonio flight route.

  • Which aircraft models fly most regularly from Seattle to San Antonio?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Seattle to San Antonio flight route.

  • Which airline alliances offer flights from Seattle to San Antonio?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Seattle and San Antonio, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to San Antonio?

    There are nonstop flights from Seattle to San Antonio on a daily basis.

  • Which is the best airline for flights from Seattle to San Antonio, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to San Antonio are Alaska Airlines and Delta. With an average price for the route of $396 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $287 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Seattle to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Seattle with another airline. Booking your flights between Seattle and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $313 or less one-way and $467 or less round-trip.
  • When flying out of Seattle Tacoma International Airport (SEA), ensure that you arrive at least 3h before your flight departs. This should give you enough time to navigate the long lines at the airport without risking missing your flight.
  • Delta Air Lines has a hub in Seattle Tacoma International Airport. For that reason, you should consider booking your flight with them since they always have more flight options than any other airline.
  • To enjoy the lounge facilities at SEA Airport, consider booking with Alaska Airlines, Delta, or United Airlines. They each have a lounge at the airport where you can hang out while waiting to board your flight.
  • San Antonio International Airport (SAT) has pet relief areas inside and outside the airport. The outdoor ones are the most conveniently located for arriving passengers and can be found at Terminal A on the 0 level of the hourly parking garage and Terminal B towards the baggage claim exit.
  • If you’re looking for specific in-flight services such as Wi-Fi, confirm that they are available during booking. Different flights tend to offer different services to passengers even when serviced by the same airline.

Prefer to fly direct from Seattle to San Antonio?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to San Antonio.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Antonio

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

San Antonio to Seattle/Tacoma Intl

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top 5 airlines serving from Seattle to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12422 reviews
7.0Entertainment
7.8Comfort
7.1Food
8.5Crew
8.1Boarding
Airline reviews

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

10.0 ExcellentBernard, May 2026
SEA - LAX
Read more Alaska Airlines reviews

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

The flight attendant and first class were very friendly, efficient, and wanted to make sure that service was great. Highly recommend this airline.

Thank you to everyone, the crew and pilots.. they were so amazing!!

Crew was so kind, flight was easy, thank you so much for everything

The plane was to narrow. Uncomfortable seats.. Kayak is Awesome!

I had to cancel this trip due to medical reasons. I took out flight insurance but I was unable to cancel my reservation on either Kayak or Alaska. I need proof that I did not take this flight to get my refund. I have tried for a week and a half together that information from either Kayak or Alaska but so far I have gotten no response. I am very disappointed!

We had paid for window seats just to not get window seats. When we ask the flight attendant to switch seats she said no because it was a full flight. It was the the worst experience I had ever.

The crew seem untrained and uncertain no one ever checked up on us in our first class cabin. I had to ask for water four times and the lady kept saying she was busy when they weren't really doing anything. Had to walk to the back of the plane to get water for myself. Crew seem new and unexperience. You can tell this by the fumbling they kept making trying to fight. (I miss Hawaiian air.)

Alaska airlines agent helped me greatly to reschedule my flight. The flight was also very comfortable and the flight attendants were very friendly.

The crew was great and everything went smoothly coming and going.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

The cabin temperature was nice and cool. The wifi was not working.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

First flight out and was 85 minutes delayed. Notification came out way too late

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

The flight had a delay but I made it to my connection. Flight was smooth overall

Very comfortable seating and the Flight staff were very attentive. The premium economy section that I was seated in was very clean, updated, and well appointed. I would highly recommend flying United Airlines as this experience was better than the Japan Airlines business class that I flew several months ago.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

It isvvery small flight. No leg room . No space to put my personal item at feet.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

There were flight delays making our flight arrive at our destination after midnight didn’t seem to have enough crew or airplanes for the flights laid over in Dallas should’ve had plenty of time to make it to our next flight only made it because that flight was also delayed because our plane wasn’t even at the airport yet overall have not had a good experience on American

Seat comfort was poor (no lumbar or lower back support).

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Got home at 3am after deboarding the plane. No compensation offered by American

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

Information on your arrival and departure airports