Your next trip, last seen at €148
When to fly
Explore datesFind the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €148, departing 25 Dec 2026 (Last checked: 21 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Alaska Airlines, American Airlines, Frontier Airlines, United Airlines
- Reported fastest flight
- 3h 57m
- Non-stop
- Yes
About this route
Explore the fares we observed from Seattle to San Antonio. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,874 km
- Reported fastest flight
- 3h 57m
- Alternative airports
- BFI
Route-level information; individual journeys vary.
Published schedules report non-stop service with Alaska Airlines. Check current timetables.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
- San Antonio International Airport (SAT) → San Antonio, city gazetteer reference point (29.4241, -98.4936): ≈ 12 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Frequently asked
How much is a flight from Seattle to San Antonio?
The lowest fare Routavio has observed is €148, found on 21 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Seattle to San Antonio?
In our observations December 2026 is the cheapest month so far, at €148.
Are there direct flights from Seattle to San Antonio?
Yes. Published schedules report non-stop flights on this route with Alaska Airlines.
Which airlines fly from Seattle to San Antonio?
Routavio has seen these carriers on the route: Alaska Airlines, American Airlines, Frontier Airlines, United Airlines.
How long does the flight from Seattle to San Antonio take?
Across the 73 fares Routavio observed, the average journey time is 17h 08m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to San Antonio fares were non-stop?
8 of the 75 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
Keep exploring
Similar routes
Non-stop airlines on this route
More routes from Seattle
Show all 36 routes →Show fewer ↑
More routes to San Antonio
Show all 30 routes →Show fewer ↑
Recently observed fares. Prices may change.