Cheap Flights from San Antonio International to Seattle

Compare San Antonio International to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

Book the best Seattle fare with no extra fees

Flight deals from San Antonio International to Seattle

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

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

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

Direct flights from San Antonio International to Seattle

Alternative San Antonio International to Seattle routes

Looking for the cheapest, fastest or easiest route from San Antonio International to Seattle? You could fly into the following airports instead.

San Antonio to Seattle: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 288
Cheapest month to flyOctober
Average flight time4 hrs, 33 mins
Most popular airlineAlaska Airlines
Average flights per week120

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

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from San Antonio International to Seattle is ر.ق.‏ 530. 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 33 minutes is the average flight time from San Antonio International to Seattle.
Alaska Airlines, Hawaiian Airlines and Air Tahiti Nui fly direct from San Antonio International to Seattle.
As of September 2025, there are 40 flights per week flying from San Antonio International to Seattle.
The cheapest month to fly from San Antonio International to Seattle is usually November.
If you're flying from San Antonio International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from ر.ق.‏ 530.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Seattle on Saturday, 8 November 2025.
Yes – the average flight time is 4 hours and 33 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 Seattle 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In September, the average temperature is usually around 15°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to Seattle.

Travelling from San Antonio International Airport (SAT) to Seattle: what you need to know

  • The average length of a direct flight from San Antonio International Airport to Seattle is 4 hours 5 minutes.

  • San Antonio International Airport is located in San Antonio. Based in the UTC-7 timezone, Seattle is two hours behind San Antonio.

  • San Antonio International Airport (SAT) to Seattle-Tacoma International Airport (SEA) is the most traveled route, with 12 weekly departures to choose from. If you prefer starting your day later, the last flight from SAT to SEA is with Alaska Airlines at 19:37. Go for the first departure with Alaska Airlines at 06:30 if you want to get on your way earlier.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. That way, you can comfortably board your SAT to Seattle flight.

  • Longer lines at check-in and security are likely if you're flying during high season, so allow a bit more breathing room. A good rule of thumb for peak periods? Get there up to four hours early for international flights and at least two hours for domestic departures.

  • Begin your journey at SAT and fly nonstop to Seattle-Tacoma International Airport (SEA). That's where you can expect to land when searching for San Antonio International Airport to Seattle tickets.

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

  • SAT is around 13 kilometres from central San Antonio. If you're catching a cab, driving or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the trip time to be around 1 hour 30 minutes.

  • Planning to catch an early flight from San Antonio International Airport to Seattle? Avoid rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays near SAT:

  • San Antonio International Airport has an excellent on-time performance, so you're less likely to experience disruptions. Departures from SAT arrive at their destination as scheduled 83.17% of the time.

  • You'll find SAT at 9800 Airport Boulevard.

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

  • ر.ق.‏ 288 is the cheapest price we've seen for a one-way San Antonio International Airport to Seattle flight. A round-trip flight ticket right now is ر.ق.‏ 530. Depending on when you want to go and the availability, these fares may change.

  • To snag cheap flights from SAT to Seattle, book your journey one month before your departure date.

  • Organise your trip for May. That's the best month for landing an epic deal on San Antonio International Airport to Seattle tickets. If you're open to different travel dates, use the 'Whole month' tool to access the lowest price across every month.

  • Snapping up a cheap flight from SAT to Seattle is easy with Price Alerts. Simply create one of these automatic notifications and we'll get in touch when the price has dropped.

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

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. If you're opting for a ride-share or a cab, the drive takes roughly 20 minutes.

  • When travelling by public transport, expect a journey time of around 55 minutes.

  • The last thing you want is a long journey to your hotel if you're landing late on a flight from San Antonio International Airport to Seattle. Stay at one of these accommodation options near SEA instead:

  • Hit the road running by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget to explore Seattle and beyond.

  • Booking your ride from Seattle-Tacoma International Airport around one week before your flight from SAT to Seattle can help you secure the lowest rate.

Lake Union Sea Plane Base Airport (LKE)

  • Once your flight from San Antonio International Airport to Seattle has hit the runway, you can reach the city centre in around 10 minutes by car. Central Seattle is roughly 3 kilometres from Lake Union Sea Plane Base Airport (LKE).

  • You can expect the trip to take roughly 25 minutes on public transport.

  • Hang the 'Do not disturb' sign on your door and relax at a hotel near LKE. Here are a few options where you can kick back after your SAT to Seattle flight:

Best time to go to Seattle

  • Travel to Seattle during high season if you want a lively atmosphere, but remember that hotel prices are typically higher. Alternatively, book your flights from San Antonio International Airport to Seattle in the low season when prices are cheaper and it's quieter.

  • Before locking in your San Antonio International Airport to Seattle flight ticket, think about the type of weather you enjoy. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.

  • If you like travelling in cooler conditions, search for a cheap ticket from SAT to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

  • Start your Seattle trip right by choosing the perfect place to stay. After booking your flight from San Antonio International Airport to Seattle, browse our range of hotels including:

  • There are so many things to see and do in this city it can be hard to figure out where to start. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are leading attractions which should be on any good Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to explore more of United States. Journey about 241 kilometres south to Portland to tick off its top sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, there's plenty to keep you on the go.

  • Spokane is another essential stop in United States and is around 370 kilometres east of Seattle. No journey is complete without a visit to Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

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