Cheap Flights from Seattle to San Antonio International

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Flight deals from Seattle to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Seattle to San Antonio International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to San Antonio International flights are currently cheapest in August.

Direct flights from Seattle to San Antonio International

Seattle to San Antonio International: Alternative routes

Compare routes from Seattle to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

Seattle to San Antonio: Flight information

The things to know before you go.
Cheapest flight foundR 1,609
Cheapest month to flyAugust
Average flight time4 hrs, 4 mins
Most popular airlineAir Tahiti Nui
Average flights per week53

Finding cheap flights from Seattle to San Antonio International: Frequently asked questions

The best price we found for a return flight from Seattle to San Antonio International is R 3,218. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 4 minutes is the average flight time from Seattle to San Antonio International.
Air Tahiti Nui, Hawaiian Airlines and Alaska Airlines fly direct from Seattle to San Antonio International.
As of June 2025, there are 53 flights per week flying from Seattle to San Antonio International.
The cheapest month to fly from Seattle to San Antonio International is usually June 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to San Antonio International Airport on Friday, 5 September 2025.
Yes – the average flight time is 4 hours and 4 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Seattle to San Antonio International Airport (SAT): What you need to know

  • Kick off your travels at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Search for flights from Seattle to San Antonio International Airport (SAT) that jet out of this terminal.

  • Around 4 hours 5 minutes is the usual time it takes for a direct Seattle to San Antonio International Airport flight.

  • San Antonio International Airport is located in San Antonio. The city operates on the UTC-5 timezone and is two hours ahead of Seattle.

  • The busiest route is from Seattle-Tacoma International Airport (SEA) to San Antonio International Airport (SAT), with 12 direct services every week. If you're eager to be on your way, the earliest flight from SEA to SAT is the 7:59am Alaska Airlines service. If a later start suits your schedule, the last departure is at 11:41pm with Alaska Airlines.

  • Arrive at the airport on time so you don't miss your flight from Seattle to SAT. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.

  • With more people on the move during peak seasons, you'll want to get to your terminal earlier than usual. Two hours for domestic flights and up to four for international journeys will allow for extra wait times.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) makes it easy to travel directly to your destination. Nonstop flights from Seattle to San Antonio International Airport (SAT) leave from this terminal.

  • Alaska Airlines is a popular carrier that operates direct flights from Seattle to San Antonio International Airport taking off from SEA.

  • Alaska Airlines is the most frequently booked airline offering flights from SEA to SAT.

  • Alaska Airlines is the most punctual carrier on this route, with 75.53% of its services arriving on schedule.

  • SEA is about 23 kilometres from central Seattle. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the travel time to be around 55 minutes.

  • Catching an early flight from Seattle to San Antonio International Airport? Avoid the last-minute rush to the terminal (and sneak in some bonus sleep) by picking one of these stays close to Seattle-Tacoma International Airport:

  • Seattle-Tacoma International Airport scores high marks for on-time performance. 81.27% of flights that depart SEA arrive at their destination on time.

Lake Union Sea Plane Base Airport (LKE)

  • You can arrive at LKE from central Seattle in approximately 10 minutes by car, depending on traffic. The ride by public transport takes roughly 25 minutes to cover the 3 kilometres or so.

  • Want to treat yourself to an extra night away before boarding your Seattle to SAT flight? Relax in a hotel near Lake Union Sea Plane Base Airport before your adventure officially begins. These stays are calling your name:

About San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • Central San Antonio is roughly 13 kilometres from San Antonio International Airport. Journey times by car hire or cab will vary depending on traffic conditions and time of day, so do a little research ahead of your trip.

  • It'll take around 1 hour 30 minutes if you're using public transport.

How to find the cheapest flights from Seattle to San Antonio International Airport (SAT)

  • The lowest price we've found for a one-way ticket from Seattle to San Antonio International Airport is R 1,609. For a return flight on this route, the best price is R 3,218. Depending on how early you book and the availability, these fares could change.

  • Snap up cheap flights from Seattle to SAT by booking one month ahead. According to our research, that's the sweet spot for finding a bargain.

  • The best month for scoring cheap Seattle to San Antonio International Airport tickets is June. Use the 'Whole month' tool to compare flight prices, then select the dates offering the lowest fares.

  • Stay on top of deals for plane tickets from Seattle to SAT by creating a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.

  • Tailor your trip using filters. Choose your preferred arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Seattle to San Antonio International Airport.

The best time to fly from Seattle to San Antonio International Airport (SAT)

  • Picture the kind of break you want when planning the timing of your trip. April is the quietest month to go to San Antonio. July is when most people book flights from Seattle to San Antonio International Airport (SAT), which may be perfect if you enjoy travelling when it's busier.

  • The warmest month in San Antonio is August, with temperatures ranging between 23ºC (73ºF) and 40ºC (104ºF). Book your Seattle to SAT plane ticket then if that's your ideal forecast.

  • January has temperatures of between 3ºC (37ºF) and 20ºC (68ºF). Look for cheap tickets from Seattle to San Antonio International Airport around that time if you'd rather travel in cooler conditions.

More about San Antonio

  • When it comes to searching for somewhere to lay your head, you'll find the best stays in San Antonio right here. Explore these options once you've booked your flight from Seattle to San Antonio International Airport:

  • There are so many things to see and do in this city, it can be hard to know where to begin. The San Antonio River Walk, San Antonio River walk and Alamo Plaza are top attractions which should feature on every San Antonio itinerary.

Explore more of the United States

  • San Antonio has plenty going for it, but there are so many other corners of the United States waiting to be discovered. About 105 kilometres north-east of San Antonio, a visit to Austin will keep your itinerary packed. Start with popular sights like Texas State Capitol, Central Park and Austin Museum of Art, Downtown.

  • Corpus Christi is another favourite destination in the United States and is around 225 kilometres south-east of San Antonio. No journey is complete without a visit to Texas State Aquarium, Bayfront Park and Corpus Christi Cathedral.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.