Route guide
Cheap Flights from Seattle to San Antonio: Book Airline Tickets
- Distance
- about 1,770 mi
- Typical flight time
- 3 h 45 min – 4 h 45 min
- Airports
- 1 × 1
- Time difference
- 2 h ahead
This page covers the practical side of flying between Seattle and San Antonio: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Seattle to San Antonio is about 1,770 miles (2,850 km) and a typical flight takes 3 h 45 min to 4 h 45 min. San Antonio is 2 hours ahead of Seattle. Seattle has 1 airport to compare and San Antonio has 1.
Airport pairs to compare
Seattle's airport is connected to downtown by light rail, which makes arrival simple even at busy times. San Antonio's airport is north of downtown and straightforward to use.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| SEA to SAT | Seattle-Tacoma International | San Antonio International |
About the airports
- SEA · Seattle-Tacoma International
Connected to downtown by Link light rail. - SAT · San Antonio International
The main airport, north of downtown.
Airlines with a major base at either end
- At Seattle: Delta Air Lines, Alaska Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Seattle
July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower.
San Antonio
Spring and fall are the most comfortable seasons. Summers are hot, and winters are mild.
How long is Seattle to San Antonio?
At about 1,770 miles, Seattle to San Antonio is a long domestic-style flight of several hours. Meal options, seat choice and baggage rules matter more on a trip this long, so compare the full total rather than just the base fare.
Time zones and timing
San Antonio is 2 hours ahead of Seattle, so you land at a local time 2 hours later than departure time plus flight time would suggest. Plan your arrival day around local time at the destination.
Getting between the airport and town
Seattle: Link light rail runs from the airport to downtown in roughly 40 minutes.
San Antonio: Rental cars, taxis and ride-hail are the most common ways into the city. City buses also serve the airport.
Planning ground transport too? See our car rental guide.
Good to know
- Alaska cruises depart from the city roughly from spring through early fall, which can lift demand and hotel prices at that time.
- Thunderstorms in spring and summer can cause delays, so leave extra connection time in those seasons.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying San Antonio to Seattle?
This route guide works in both directions. For other trips, see all flights from Seattle or all flights from San Antonio.
Frequently asked questions
How far is Seattle from San Antonio?
The straight-line distance between the main airports is about 1,770 miles (2,850 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Seattle to San Antonio?
A typical scheduled flight takes roughly 3 h 45 min to 4 h 45 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Seattle: SEA (Seattle-Tacoma International). At San Antonio: SAT (San Antonio International). Ask for prices on more than one pairing.
Is there a time difference?
San Antonio is 2 hours ahead of Seattle.
When is the best time to fly from Seattle to San Antonio?
In Seattle: July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower. In San Antonio: Spring and fall are the most comfortable seasons. Summers are hot, and winters are mild. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Seattle to San Antonio?
Airlines with a major base at either end include Delta Air Lines and Alaska Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.