United Airlines Seattle to San Antonio Flights

Cheapflightsplus.com will find cheap United Airlines flights from Seattle to San Antonio. Compare airline ticket prices and book air tickets starting from $221 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — San Antonio (TX) by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in march: one-way - $221, two-way – $379.
Direct flights
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
11:20 pm — 3:18 pm
+1 day
11:20 pm — 7:26 am UA341 United Airlines
Seattle — Newark
4h 32m stop
11:58 am — 3:18 pm UA1027 United Airlines
Newark — San Antonio
13h 58m
including layover
Find flight
from$394
12:37 pm — 1:49 pm
+1 day
12:37 pm — 2:55 pm UA1482 United Airlines
Seattle — San Francisco
17h 25m stop
8:20 am — 1:49 pm UA5468 United Airlines
San Francisco — San Antonio
23h 12m
including layover
Find flight
from$336
12:46 pm — 9:04 pm
12:46 pm — 4:31 pm UA423 United Airlines
Seattle — Denver
1h 19m stop
5:50 pm — 9:04 pm UA1762 United Airlines
Denver — San Antonio
6h 18m
including layover
Find flight
from$272
1:56 pm — 11:15 pm
1:56 pm — 8:20 pm UA1746 United Airlines
Seattle — Houston
1h 48m stop
10:08 pm — 11:15 pm UA2142 United Airlines
Houston — San Antonio
7h 19m
including layover
Find flight
from$272
3:16 pm — 8:33 am
+1 day
3:16 pm — 7:01 pm UA757 United Airlines
Seattle — Denver
1h 29m stop
8:30 pm — 11:58 pm UA2419 United Airlines
Denver — Houston
7h 22m stop
7:20 am — 8:33 am UA6089 United Airlines
Houston — San Antonio
15h 17m
including layover
Find flight
from$406
3:24 pm — 1:49 pm
+1 day
3:24 pm — 5:42 pm UA589 United Airlines
Seattle — San Francisco
14h 38m stop
8:20 am — 1:49 pm UA5468 United Airlines
San Francisco — San Antonio
20h 25m
including layover
Find flight
from$336
4:58 pm — 1:49 pm
+1 day
4:58 pm — 7:10 pm UA2482 United Airlines
Seattle — San Francisco
13h 10m stop
8:20 am — 1:49 pm UA5468 United Airlines
San Francisco — San Antonio
18h 51m
including layover
Find flight
from$336
5:02 am — 1:10 pm
5:00 am — 8:47 am UA2269 United Airlines
Seattle — Denver
1h 10m stop
9:57 am — 1:09 pm UA1131 United Airlines
Denver — San Antonio
6h 8m
including layover
Find flight
from$221
7:13 pm — 1:27 pm
+1 day
7:13 pm — 10:57 pm UA1387 United Airlines
Seattle — Denver
6h 3m stop
5:00 am — 8:31 am UA320 United Airlines
Denver — Houston
3h 44m stop
12:15 pm — 1:27 pm UA2378 United Airlines
Houston — San Antonio
16h 14m
including layover
Find flight
from$260
7:13 pm — 1:10 pm
+1 day
7:13 pm — 10:57 pm UA1387 United Airlines
Seattle — Denver
10h 57m stop
9:54 am — 1:10 pm UA1131 United Airlines
Denver — San Antonio
15h 57m
including layover
Find flight
from$298
7:13 pm — 11:27 am
+1 day
7:13 pm — 10:57 pm UA1387 United Airlines
Seattle — Denver
6h 3m stop
5:00 am — 8:31 am UA320 United Airlines
Denver — Houston
1h 44m stop
10:15 am — 11:27 am UA2337 United Airlines
Houston — San Antonio
14h 14m
including layover
Find flight
from$303
7:15 am — 11:15 pm
7:15 am — 9:36 am UA1403 United Airlines
Seattle — San Francisco
5h 17m stop
2:53 pm — 8:44 pm UA2855 United Airlines
San Francisco — Houston
1h 24m stop
10:08 pm — 11:15 pm UA2142 United Airlines
Houston — San Antonio
14h
including layover
Find flight
from$342
7:32 pm — 8:33 am
+1 day
7:32 pm — 9:50 pm UA737 United Airlines
Seattle — San Francisco
2h 9m stop
11:59 pm — 5:47 am UA505 United Airlines
San Francisco — Houston
1h 33m stop
7:20 am — 8:33 am UA6089 United Airlines
Houston — San Antonio
11h 1m
including layover
Find flight
from$234
7:32 pm — 1:49 pm
+1 day
7:32 pm — 9:50 pm UA737 United Airlines
Seattle — San Francisco
10h 30m stop
8:20 am — 1:49 pm UA5468 United Airlines
San Francisco — San Antonio
16h 17m
including layover
Find flight
from$336
8:50 am — 11:15 pm
8:50 am — 12:36 pm UA1829 United Airlines
Seattle — Denver
4h 44m stop
5:20 pm — 8:50 pm UA726 United Airlines
Denver — Houston
1h 18m stop
10:08 pm — 11:15 pm UA2142 United Airlines
Houston — San Antonio
12h 25m
including layover
Find flight
from$346
9:20 am — 11:15 pm
9:20 am — 11:39 am UA1960 United Airlines
Seattle — San Francisco
3h 14m stop
2:53 pm — 8:44 pm UA2855 United Airlines
San Francisco — Houston
1h 24m stop
10:08 pm — 11:15 pm UA2142 United Airlines
Houston — San Antonio
11h 55m
including layover
Find flight
from$277
9:20 am — 1:49 pm
+1 day
9:20 am — 11:39 am UA1960 United Airlines
Seattle — San Francisco
20h 41m stop
8:20 am — 1:49 pm UA5468 United Airlines
San Francisco — San Antonio
26h 29m
including layover
Find flight
from$336
9:20 am — 9:37 pm
9:20 am — 11:39 am UA1960 United Airlines
Seattle — San Francisco
1h 25m stop
1:04 pm — 6:55 pm UA1314 United Airlines
San Francisco — Houston
1h 30m stop
8:25 pm — 9:37 pm UA2338 United Airlines
Houston — San Antonio
10h 17m
including layover
Find flight
from$418
*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There are 19 flights by United Airlines from Seattle to San Antonio every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at San Antonio, Kelly AFB, Stinson Municipal, Randolph AFB, Martindale AAF.

Departures start from 11:20 pm to 9:20 am. Nonstop flight is 6h 8m. The time difference between Seattle and San Antonio is 2h.

  • The fastest flight 6h 8m
  • Average flight time 14h 7m
  • The earliest flight 11:20 pm
  • The latest flight 9:20 am
  • Distance 1774 ml

The cheapest months for traveling to San Antonio are december (from 221 $), february (from 229 $).

The cheapest flight by United Airlines that our users were able to find is $221. This airfare is economy class on one-way UA2269 flight for February 21, 2025 leaving Seattle-Tacoma Intl in Seattle at 5:02 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 5 airline carriers between Seattle and San Antonio. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to San Antonio.

Nonstop flights

There’re no direct flights on this route. Try flights with stops.

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Connecting Flights

List of flights with layovers (1 and more stops):

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How to book an air 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 airfare.
  • 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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