Cheap Flights from Seattle, WA to San Antonio, TX from $126

Return flight: San Antonio – Seattle

On Cheapflightsplus.com you will find 2 direct and 59 connecting flights from Seattle to San Antonio. You can compare airfare deals from 5 airlines and multiple travel sites from $126, book and save on cheap plane tickets and last minute offers. Also check out SEA-SAT flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to San Antonio Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $126 (one-way), $216 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Seattle to San Antonio. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
12:33 — 18:37
12:33 — 18:37 HA6891 Hawaiian Airlines
Seattle — San Antonio
4h 4m
Find flight
from$126
23:36 — 05:40
+1 day
23:36 — 05:40 AS423 Alaska Airlines
Seattle — San Antonio
4h 4m
Find flight
from$148
00:20 — 11:45
00:20 — 06:28 UA1832 United Airlines
Seattle — Chicago
2h 17m stop
08:45 — 11:45 UA490 United Airlines
Chicago — San Antonio
9h 25m
including layover
Find flight
from$677
05:00 — 13:19
05:00 — 11:19 UA1668 United Airlines
Seattle — Houston
51m stop
12:10 — 13:19 UA6017 United Airlines
Houston — San Antonio
6h 19m
including layover
Find flight
from$176
05:00 — 15:32
05:00 — 11:19 UA1668 United Airlines
Seattle — Houston
3h 6m stop
14:25 — 15:32 UA6058 United Airlines
Houston — San Antonio
8h 32m
including layover
Find flight
from$177
06:00 — 14:14
06:00 — 12:00 AS491 Alaska Airlines
Seattle — Dallas
1h 9m stop
13:09 — 14:14 AS6304 Alaska Airlines
Dallas — San Antonio
6h 14m
including layover
Find flight
from$218
06:25 — 19:13
06:25 — 10:14 F93406 Frontier Airlines
Seattle — Denver
5h 41m stop
15:55 — 19:13 F92098 Frontier Airlines
Denver — San Antonio
10h 48m
including layover
Find flight
from$140
07:10 — 17:42
07:10 — 13:39 UA2135 United Airlines
Seattle — Houston
3h 4m stop
16:35 — 17:42 UA636 United Airlines
Houston — San Antonio
8h 32m
including layover
Find flight
from$177
07:10 — 19:12
07:05 — 13:33 UA2135 United Airlines
Seattle — Houston
4h 34m stop
18:45 — 19:52 UA1477 United Airlines
Houston — San Antonio
10h 2m
including layover
Find flight
from$267
08:17 — 17:40
08:17 — 14:19 AS414 Alaska Airlines
Seattle — Dallas
2h 16m stop
16:40 — 17:48 AS4653 Alaska Airlines
Dallas — San Antonio
7h 23m
including layover
Find flight
from$217
08:17 — 16:30
08:17 — 14:19 AS414 Alaska Airlines
Seattle — Dallas
1h 11m stop
15:30 — 16:30 AS4014 Alaska Airlines
Dallas — San Antonio
6h 13m
including layover
Find flight
from$261
09:50 — 19:46
09:50 — 15:48 AS426 Alaska Airlines
Seattle — Dallas
2h 55m stop
18:43 — 19:46 AS6612 Alaska Airlines
Dallas — San Antonio
7h 56m
including layover
Find flight
from$617
10:50 — 21:39
10:50 — 16:57 AS429 Alaska Airlines
Seattle — Chicago
1h 43m stop
18:40 — 21:39 AS4233 Alaska Airlines
Chicago — San Antonio
8h 49m
including layover
Find flight
from$1348
11:11 — 23:59
11:11 — 14:58 UA1969 United Airlines
Seattle — Denver
5h 45m stop
20:43 — 23:59 UA1801 United Airlines
Denver — San Antonio
10h 48m
including layover
Find flight
from$405
11:57 — 22:59
11:57 — 18:25 UA787 United Airlines
Seattle — Houston
3h 30m stop
21:55 — 22:59 UA1475 United Airlines
Houston — San Antonio
9h 2m
including layover
Find flight
from$507
12:00 — 23:00
12:00 — 14:54 AS1144 Alaska Airlines
Seattle — Los Angeles
3h 3m stop
17:57 — 23:00 AS6792 Alaska Airlines
Los Angeles — San Antonio
9h
including layover
Find flight
from$510
13:35 — 23:57
13:35 — 16:29 AS700 Alaska Airlines
Seattle — Phoenix
3h 16m stop
19:45 — 23:57 AS4116 Alaska Airlines
Phoenix — San Antonio
8h 22m
including layover
Find flight
from$620
13:40 — 21:46
13:40 — 19:36 AS549 Alaska Airlines
Seattle — Dallas
1h 6m stop
20:45 — 21:53 AS4113 Alaska Airlines
Dallas — San Antonio
6h 6m
including layover
Find flight
from$218
14:24 — 23:59
14:24 — 18:15 UA2859 United Airlines
Seattle — Denver
2h 28m stop
20:43 — 23:59 UA1801 United Airlines
Denver — San Antonio
7h 35m
including layover
Find flight
from$177
14:57 — 23:59
14:57 — 18:48 UA1747 United Airlines
Seattle — Denver
1h 55m stop
20:43 — 23:59 UA1801 United Airlines
Denver — San Antonio
7h 2m
including layover
Find flight
from$409
15:49 — 23:59
15:49 — 19:32 HA6650 Hawaiian Airlines
Seattle — Denver
1h 11m stop
20:43 — 23:59 UA1801 United Airlines
Denver — San Antonio
6h 10m
including layover
Find flight
from$659
17:15 — 08:50
+1 day
17:15 — 23:35 UA485 United Airlines
Seattle — Houston
8h 8m stop
07:43 — 08:50 UA491 United Airlines
Houston — San Antonio
13h 35m
including layover
Find flight
from$258
17:15 — 17:42
+1 day
17:15 — 23:35 UA485 United Airlines
Seattle — Houston
17h stop
16:35 — 17:42 UA636 United Airlines
Houston — San Antonio
22h 27m
including layover
Find flight
from$258
23:58 — 08:50
+1 day
23:58 — 06:16 UA2379 United Airlines
Seattle — Houston
1h 27m stop
07:43 — 08:50 UA491 United Airlines
Houston — San Antonio
6h 52m
including layover
Find flight
from$313
18:16 — 19:23
+1 day
18:16 — 23:33 SY286 Sun Country Airlines
Seattle — Minneapolis
6h 33m stop
06:06 — 07:56 SY421 Sun Country Airlines
Minneapolis — Los Angeles
6h 30m stop
14:26 — 19:23 NK1273 Spirit Airlines
Los Angeles — San Antonio
23h 7m
including layover
Find flight
from$394
*Departure and arrival times - local. Updated on July 30, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to San Antonio depends on and how to choose the most interesting flight option for you.

Distance between Seattle and San Antonio is 2854 miles. Time difference between the cities is 2h. Airplanes depart 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 5 San Antonio airports. Average flight time is 4h 4m.

  • The fastest flight 4h 4m
  • Average flight time 4h 4m
  • The earliest flight 00:20
  • The latest flight 23:59
  • Distance 1774 ml

The cheapest months to travel to San Antonio are august (from 126 $), july (from 175 $), may (from 187 $).

The most expensive months are february (from 288 $), december (from 277 $), june (from 207 $).

What is the lowest airfare Seattle to San Antonio?

The cheapest plane ticket found by our users is $126. This airfare is for economy class on one-way HA6891 flight by Hawaiian Airlines for August 16, 2025 which leaves Seattle-Tacoma Intl in Seattle at 12:33 am and arrives at San Antonio San Antonio at 18:37.

Economy class
$126
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Business class
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First class
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Popular Airlines on the Route

The flight Seattle — San Antonio is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 13 departures per week at the price of from $ 148 . And the most expensive tickets are offered by United Airlines airline - from $ 1906.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is HA6891 by Hawaiian Airlines takes 4h 4m and the cheapest is HA6891 by Hawaiian Airlines for $126.

  • AS - Alaska Airlines
    from $148
    Find
  • HA - Hawaiian Airlines
    from $126
    Find
See more direct flights

Connecting Flights

There are 59 flights with layovers on the route. The fastest connecting flight is UA2269 by United Airlines takes 5h 47m and the cheapest is HA6891 by Hawaiian Airlines for $140.

  • AS - Alaska Airlines
    from $217
    Find
  • F9 - Frontier Airlines
    from $140
    Find
  • SY - Sun Country Airlines
    from $328
    Find
  • HA - Hawaiian Airlines
    from $625
    Find
  • UA - United Airlines
    from $176
    Find
See more connecting flights

Airports

You can fly from Seattle to San Antonio from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

  • Boeing Field International Airport-BFI
    Find
  • Seattle-Tacoma Intl-SEA
    from $126
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

San Antonio airports

  • Randolph AFB-RND
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  • Martindale AAF-MDA
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  • San Antonio-SAT
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  • Kelly AFB-SKF
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  • Stinson Municipal-SSF
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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