SEA - SAT

Find cheap flights from Seattle to San Antonio

1 adult
1 adult, Economy

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Antonio, as well as popular online travel agencies
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Booking Insights
Flights 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

Multiple Airlines Logo
SEA-SAT
4591 kmmulti-stop
Multiple Airlines Logo
SAT-SEA
4591 kmmulti-stop
Multiple Airlines
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Expert advice

Expert advice for your flight from Seattle to San Antonio

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
SEA

Use the SEA Spot Saver for expedited security screening without TSA PreCheck. Book online or via the flySEA app for free access to dedicated lanes.

Read more about SEAby Harriet Baskas
SAT

Take the #5 VIA bus from SAT to downtown San Antonio. It's affordable, takes about 30 minutes, and has plenty of room for luggage.

Read more about SATby Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz

Brandon Schultz

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet Baskas

Harriet Baskas

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.

Read more
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.

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 January, where tickets cost C$ 353 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is C$ 670 and C$ 574 respectively.

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 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.


Good to know

Low seasonAugust
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (37% more expensive on average)

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.

  • 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 9 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?

    oneworld is the only airline alliance operating flights between Seattle and San Antonio.

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

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

  • 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.

  • 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 C$ 552 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

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Thursday

Air Tahiti Nui,Alaska Airlines,Condor, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Friday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Saturday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Sunday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

See more nonstop flights

Direct returns

San Antonio to Seattle/Tacoma Intl

Monday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Thursday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Friday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Saturday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Sunday

Air Tahiti Nui,Alaska Airlines,Condor, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

See more nonstop flights

Reviews of the top airline flying 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.1Entertainment
7.1Food
Airline reviews

I was in the middle seat in the last row but that wasn’t their fault. It is why I rated the flight as mediocre, also the landing was a little rough. The good was really good. The self service luggage belt at SEATAC stopped working right when I reached it. I was literally placing my bag on the small belt when the main belt stopped. I understand that it wasn’t just Alaska but the entire side of the terminal. It took the agents about 20 minutes to arrive at a game plan and it certainly wasn’t flawless but they arranged for our luggage to be taken to the plane the old fashioned way by hand. Understandably, the plane was late in leaving. The flight took the proper amount of time and instead of arriving at OAK at 1:45, we got there at 2:30. I took my time getting to baggage claim because I knew it would be late if it was there at all. Sure enough it wasn’t but there was an agent there to greet me and inform me about my luggage. Long story longer, they delivered my luggage to where I was staying which was an hour away from the airport. Alaska has instituted a delivery type tracking system through my email that kept me informed of where my luggage was the whole time. WELL DONE!!

8.0 ExcellentMichael, Jul 2025SEA - OAK
Read more Alaska Airlines reviews

I was in the middle seat in the last row but that wasn’t their fault. It is why I rated the flight as mediocre, also the landing was a little rough. The good was really good. The self service luggage belt at SEATAC stopped working right when I reached it. I was literally placing my bag on the small belt when the main belt stopped. I understand that it wasn’t just Alaska but the entire side of the terminal. It took the agents about 20 minutes to arrive at a game plan and it certainly wasn’t flawless but they arranged for our luggage to be taken to the plane the old fashioned way by hand. Understandably, the plane was late in leaving. The flight took the proper amount of time and instead of arriving at OAK at 1:45, we got there at 2:30. I took my time getting to baggage claim because I knew it would be late if it was there at all. Sure enough it wasn’t but there was an agent there to greet me and inform me about my luggage. Long story longer, they delivered my luggage to where I was staying which was an hour away from the airport. Alaska has instituted a delivery type tracking system through my email that kept me informed of where my luggage was the whole time. WELL DONE!!

Crew was very friendly. Our bags showed up at the carousel within 20 minutes of arrival.

Flight was delayed and hour due to tire issue. First flight of the day, this issue should have been discovered prior to boarding.

Both legs of the trip were delayed about an hour. Planes were new, liked the WiFi availability and entertainment available. Crew was very good. People were happy and helpful. Liked the pilots - they provided updates throughout the flights. Snacks were underwhelming. Drinks were good! Like the smaller sodas and they actually came through the cabin 2x which was great. In Seattle airport the construction caused much confusion for Alaska. Process of printing own tags, etc was chaotic for people who didn’t check in online prior to arrival which in turn caused issues for those who did. Plus airport gates were too small for the number of people flying.

We did have to wait an hour for the runway to be cleared but other than that it was fine.

My seat row didn’t have tray tables which made it pretty difficult to get comfortable on a four hour flight. Good experience outside of that, though.

There was no sitting place in Sea-Tac airport. Even airline didn’t provide any food or dinner. I will never take this airline in my future travel.

Crew was very rude and uncaring. When someone tried to place their bag in overhead bin and they asked for help, crew told them they could not assist. Crew member then told the customer if they couldn’t place into overhead bin on their own, they should have checked in bag. When other customer helped to place the bag in the overhead bin, they were given evil look by crew member and told to hurry back to their uncomfortable middle seat. This was despite the fact that the plane did not leave until 30 minutes later. The flight was ~80% full; when final people boarded, they were forced into middle seats with no room for comfort. There were a handful of emergency row seats unoccupied. When asked if any of the emergency row seats may be used, the crew said that they would cost extra. Normally if a flight is completely boarded and there are open seats, the crew at least gives thought to asking someone if they want to re-locate to the more comfortable seat, especially on a long flight.

I am always uncomfortable about the boarding process. I think every airlines has their own procedures for boarding but all of their procedures are inconvenient because it takes too much time to board. If you board people from back seat to front, I think you can reduce the time to boarding.

Our original fluffy was cancelled. Our substitute flight didn't fly. We lost out on our hotel and car rental. Had to fly out the next morning. Alaska didn't give us any meaningful information. The first flight was scheduled to leave at 4pm and the substitute flight at 9pm. We left the airport at midnight for a hotel. No weather. Beyond disappointed.

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