$139+ Cheap flights from Seattle to San Antonio (SEA - SAT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Antonio are usually found in February or January, booked 47 days in advance, depart on a Thursday or Tuesday and return on a Thursday
Cheap flight deals from Seattle to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to San AntonioExplore the most affordable flight options available from Seattle to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
Explore the most affordable flight options available from Seattle to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:27 pm -
1 stop24h 58m
Sun 9/2712:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$236
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:45 pm -
1 stop11h 59m
Tue 10/68:20 pm -
1 stop20h 48m
Deal found 9/2![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:14 pm -
1 stop7h 20m
Thu 10/2910:29 pm -
1 stop13h 16m
Deal found 9/1![Frontier logo]()
$251
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:45 pm -
1 stop21h 18m
Sun 9/2712:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$252
This Trip.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:27 pm -
1 stop24h 59m
Sun 10/1810:34 pm -
1 stop13h 14m
Deal found 9/1![Frontier logo]()
$253
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:13 pm -
1 stop22h 21m
Mon 11/910:29 pm -
1 stop14h 30m
Deal found 9/1![Frontier logo]()
$261
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:13 pm -
1 stop14h 36m
Sun 11/110:29 pm -
1 stop13h 16m
Deal found 9/2![Frontier logo]()
$262
This CheapOair deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:27 pm -
1 stop24h 58m
Fri 11/1310:29 pm -
1 stop14h 30m
Deal found 9/5![Frontier logo]()
$266
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:45 pm -
1 stop11h 59m
Sun 9/2012:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$268
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:19 pm -
1 stop6h 40m
Wed 10/145:58 pm -
1 stop7h 02m
Deal found 9/2![United Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 pm -
2 stops23h 34m
Wed 11/410:29 pm -
1 stop13h 16m
Deal found 9/4![Frontier logo]()
$276
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:15 am -
1 stop7h 57m
Tue 10/66:00 pm -
1 stop6h 05m
Deal found 9/2![Delta logo]()
$277
Best flights from Seattle to San AntonioDiscover carefully curated flight deals from Seattle to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from Seattle to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:35 pm -
1 stop5h 40m
Sat 11/145:55 am -
1 stop6h 55m
Deal found 9/5![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:30 pm -
1 stop7h 43m
Fri 10/164:45 pm -
1 stop9h 11m
Deal found 9/5![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:59 pm -
1 stop6h 39m
Wed 10/71:17 pm -
2 stops12h 09m
Deal found 9/4![United Airlines logo]()
$458
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:03 am -
Nonstop4h 13m
Wed 10/75:26 pm -
Nonstop4h 25m
Deal found 9/4![Alaska Airlines logo]()
$482
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:05 pm -
2 stops7h 35m
Wed 10/146:15 pm -
1 stop6h 25m
Deal found 9/2![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:22 am -
1 stop7h 44m
Thu 9/174:50 pm -
1 stop7h 15m
Deal found 9/1![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:05 pm -
2 stops7h 35m
Sat 11/712:40 pm -
2 stops9h 50m
Deal found 9/4![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:15 am -
2 stops8h 45m
Sun 10/46:05 am -
1 stop6h 50m
Deal found 9/1![Southwest logo]()
$321
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:50 am -
2 stops8h 55m
Thu 9/177:50 pm -
1 stop6h 55m
Deal found 9/1![Southwest logo]()
$378
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:40 am -
2 stops8h 20m
Sat 9/126:20 am -
2 stops8h 35m
Deal found 9/3![Southwest logo]()
$469
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:30 am -
2 stops8h 45m
Sat 11/285:40 am -
2 stops10h 30m
Deal found 8/31![Southwest logo]()
$483
Last-minute flights from Seattle to San AntonioDiscover last-minute flight deals from Seattle to San Antonio. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Antonio. Data last updated September 5, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:45 pm -
1 stop21h 18m
Sun 9/2712:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$252
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:27 pm -
1 stop24h 58m
Mon 9/2112:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:45 pm -
1 stop11h 59m
Wed 9/233:19 pm -
1 stop20h 23m
Deal found 9/3![Frontier logo]()
$278
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:27 pm -
1 stop24h 58m
Sun 9/2712:39 pm -
1 stop23h 03m
Deal found 9/1![Frontier logo]()
$236
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:15 am -
1 stop7h 57m
Sun 10/46:07 pm -
1 stop7h 48m
Deal found 9/2![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:45 pm -
1 stop14h 03m
Tue 10/63:19 pm -
1 stop20h 23m
Deal found 9/5![Frontier logo]()
$272
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:45 pm -
1 stop11h 59m
Tue 10/68:20 pm -
1 stop20h 48m
Deal found 9/2![Frontier logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:16 pm -
1 stop12h 59m
Sun 10/1810:34 pm -
1 stop13h 14m
Deal found 9/4![Frontier logo]()
$279
This Trip.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:27 pm -
1 stop24h 59m
Sun 10/1810:34 pm -
1 stop13h 14m
Deal found 9/1![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 pm -
2 stops23h 34m
Wed 11/410:29 pm -
1 stop13h 16m
Deal found 9/4![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:14 pm -
1 stop7h 20m
Thu 10/2910:29 pm -
1 stop13h 16m
Deal found 9/1![Frontier logo]()
$251
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:13 pm -
1 stop14h 36m
Sun 11/110:29 pm -
1 stop13h 16m
Deal found 9/2![Frontier logo]()
$262
One-way flights from Seattle to San AntonioSearch for one-way flight options from Seattle to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from Seattle to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:30 pm -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$139
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:27 pm -
1 stop24h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$141
This Trip.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:45 pm -
1 stop11h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$142
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:40 pm -
1 stop12h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$144
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:45 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Delta logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:30 am -
2 stops10h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:09 pm -
2 stops21h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:00 pm -
2 stops47h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$159
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop8h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$160
This United Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:59 pm -
1 stop6h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$161
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:16 pm -
1 stop6h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$164
Find flight deals from Seattle to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $236 (Expedia) |
One-way from | $139 (Delta) |
Popular in | June |
Cheapest in | February |
Average price | $306 |
Good round-trip deal | $539 or less |
Good one-way deal | $288 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 5, 2026.
Use the filters below to find and compare flights from Seattle to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Mon 10/12
8:40 pm-11:05 am
1 stop12h 25m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$144
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Mon 9/14
11:05 pm-10:39 am
1 stop9h 34m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$169
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Thu 10/1
11:10 am-9:15 pm
2 stops8h 05m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$174
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Fri 9/11
7:20 am-6:46 pm
1 stop9h 26m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$179
Quickest round-trip
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Sat 9/12
5:45 am-1:40 pm
1 stop5h 55m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$179
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Fri 9/25
8:29 pm-8:52 am
2 stops10h 23m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$194
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Tue 9/15
9:00 am-10:44 pm
2 stops11h 44m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$194
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Fri 9/11
9:00 am-10:44 pm
2 stops11h 44m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$201
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Tue 9/22
9:00 am-10:44 pm
2 stops11h 44m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$204
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Sun 9/13
9:25 pm-10:25 am
1 stop11h 00m
San Antonio
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$229
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Seattle to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to San Antonio in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Seattle with our price prediction graph.
SEA-SAT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to San Antonio
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How far ahead should I book a flight from Seattle to San Antonio?
Booking 46 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to San Antonio?
Currently, February is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $290). Flying from Seattle to San Antonio in June is currently the most expensive (average of $425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to SAT?
Find hourly flight availability from Seattle to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 5, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to San Antonio as you normally would.
What’s the top layover airport for flights from Seattle to San Antonio?
Share of 1-stop round-trip flights from Seattle to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.
Phoenix (PHX) – chosen by Cheapflights users on 27% of 1-stop itineraries from Seattle to San Antonio on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to San Antonio?
Average round-trip fare for 1-stop flights from Seattle to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $204.
What’s the fastest layover option from Seattle to San Antonio?
Shortest average travel time for 1-stop one-way flights from Seattle to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 5h 53m.
Which airport typically offers the quickest layover for flights from Seattle to San Antonio?
Average layover duration for 1-stop one-way flights from Seattle to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 0h 49m.
The best insider tips for Seattle to San Antonio flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to San Antonio trip
Our travel experts
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated September 5, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Seattle to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Seattle and San Antonio flights
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Top 7 airlines flying from Seattle to San Antonio
Discover the top 7 airlines that operate flights from Seattle to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$297 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$169 | Average$288 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$390 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$201 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$217 | Average$417 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$358 | FlexibilityNo cancel fee | On-time63% |