$119+ Cheap flights from Seattle to San Antonio (SEA - SAT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
Aug 6 — Aug 131
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 September or February, 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 July 7, 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 July 7, 2026.
This Frontier deal was found by Cheapflights users on 7/6. 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.
Thu 7/308:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Wed 8/59:32 pm
SAT
- SEA
1 stop15h 32m
Frontier
Deal found 7/6![Frontier logo]()
$240
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/271:16 pm
SEA
- SAT
1 stop6h 43m
United Airlines
Sun 8/305:30 am
SAT
- SEA
1 stop8h 14m
United Airlines
Deal found 7/2![United Airlines logo]()
$242
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 10/306:00 am
SEA
- SAT
1 stop9h 34m
Delta
Sun 11/112:34 pm
SAT
- SEA
1 stop6h 18m
Delta
Deal found 7/3![Delta logo]()
$247
This CheapOair deal was found by Cheapflights users on 7/5. 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.
Wed 8/57:06 pm
SEA
- SAT
1 stop21h 48m
Frontier
Sat 8/87:49 pm
SAT
- SEA
1 stop15h 15m
Frontier
Deal found 7/5![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 7/6. 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 8/2011:00 pm
SEA
- SAT
2 stops9h 35m
Southwest
Thu 8/2711:15 am
SAT
- SEA
1 stop9h 30m
Southwest
Deal found 7/6![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 7/6. 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 9/199:20 am
SEA
- SAT
1 stop11h 30m
Southwest
Tue 9/2912:55 pm
SAT
- SEA
2 stops9h 20m
Southwest
Deal found 7/6![Southwest logo]()
$258
This CheapOair deal was found by Cheapflights users on 7/6. 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 7/207:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Tue 7/287:39 pm
SAT
- SEA
1 stop15h 38m
Frontier
Deal found 7/6![Frontier logo]()
$259
This Flightnetwork deal was found by Cheapflights users on 7/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Sat 7/259:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/3![Frontier logo]()
$260
This Southwest deal was found by Cheapflights users on 7/6. 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 8/48:15 am
SEA
- SAT
1 stop12h 10m
Southwest
Thu 8/67:50 pm
SAT
- SEA
1 stop6h 50m
Southwest
Deal found 7/6![Southwest logo]()
$261
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Sun 7/199:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/3![Frontier logo]()
$264
This Southwest deal was found by Cheapflights users on 7/2. 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 9/96:25 am
SEA
- SAT
1 stop6h 25m
Southwest
Wed 9/95:55 pm
SAT
- SEA
1 stop7h 30m
Southwest
Deal found 7/2![Southwest logo]()
$265
This CheapOair deal was found by Cheapflights users on 7/2. 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.
Thu 7/168:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Mon 7/209:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/2![Frontier logo]()
$268
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 July 7, 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 July 7, 2026.
This Delta deal was found by Cheapflights users on 7/2. 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.
Fri 9/45:30 am
SEA
- SAT
1 stop8h 24m
Delta
Mon 9/76:04 pm
SAT
- SEA
1 stop7h 50m
Delta
Deal found 7/2![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/1. 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.
Tue 7/2112:00 pm
SEA
- SAT
2 stops10h 35m
Southwest
Wed 7/298:25 pm
SAT
- SEA
1 stop6h 20m
Southwest
Deal found 7/1![Southwest logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/6. 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 9/911:59 pm
SEA
- SAT
1 stop9h 00m
United Airlines
Wed 9/231:45 pm
SAT
- SEA
2 stops11h 41m
United Airlines
Deal found 7/6![United Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Tue 7/2110:58 pm
SEA
- SAT
Nonstop4h 02m
Multiple Airlines
Wed 7/297:39 pm
SAT
- SEA
1 stop15h 38m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 7/1. 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.
Fri 8/1412:36 pm
SEA
- SAT
1 stop9h 20m
Delta
Fri 8/214:49 pm
SAT
- SEA
1 stop8h 55m
Delta
Deal found 7/1![Delta logo]()
$247
This Delta deal was found by Cheapflights users on 7/5. 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 9/222:30 pm
SEA
- SAT
1 stop7h 43m
Delta
Thu 9/244:50 pm
SAT
- SEA
1 stop7h 20m
Delta
Deal found 7/5![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/4. 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.
Thu 7/301:30 pm
SEA
- SAT
2 stops10h 10m
Southwest
Mon 8/32:40 pm
SAT
- SEA
1 stop7h 30m
Southwest
Deal found 7/4![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 8/259:05 am
SEA
- SAT
1 stop6h 51m
United Airlines
Wed 8/262:15 pm
SAT
- SEA
2 stops9h 43m
United Airlines
Deal found 7/1![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 7/2. 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.
Mon 9/219:45 am
SEA
- SAT
2 stops8h 30m
Southwest
Sat 9/266:20 am
SAT
- SEA
2 stops8h 35m
Southwest
Deal found 7/2![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 7/4. 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.
Thu 8/611:00 pm
SEA
- SAT
2 stops9h 35m
Southwest
Thu 8/133:30 pm
SAT
- SEA
2 stops10h 25m
Southwest
Deal found 7/4![Southwest logo]()
$439
Last-minute flights from Seattle to San AntonioDiscover last-minute flight deals from Seattle to San Antonio. Data last updated July 7, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Antonio. Data last updated July 7, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 7/3. 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.
Tue 7/147:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Thu 8/137:49 pm
SAT
- SEA
1 stop15h 15m
Frontier
Deal found 7/3![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 7/1. 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 7/168:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Sun 7/199:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/1![Frontier logo]()
$268
This Flightnetwork deal was found by Cheapflights users on 7/3. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Sat 7/259:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/3![Frontier logo]()
$260
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Sun 7/199:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/3![Frontier logo]()
$264
This CheapOair deal was found by Cheapflights users on 7/6. 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 7/207:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Tue 7/287:39 pm
SAT
- SEA
1 stop15h 38m
Frontier
Deal found 7/6![Frontier logo]()
$259
This Booking.com deal was found by Cheapflights users on 7/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2112:35 pm
SEA
- SAT
1 stop28h 09m
Frontier
Wed 7/229:32 pm
SAT
- SEA
1 stop15h 07m
Frontier
Deal found 7/6![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 7/6. 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.
Thu 7/308:53 pm
SEA
- SAT
1 stop21h 44m
Frontier
Wed 8/59:32 pm
SAT
- SEA
1 stop15h 32m
Frontier
Deal found 7/6![Frontier logo]()
$240
This Southwest deal was found by Cheapflights users on 7/6. 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 8/48:15 am
SEA
- SAT
1 stop12h 10m
Southwest
Thu 8/67:50 pm
SAT
- SEA
1 stop6h 50m
Southwest
Deal found 7/6![Southwest logo]()
$261
This CheapOair deal was found by Cheapflights users on 7/5. 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.
Wed 8/57:06 pm
SEA
- SAT
1 stop21h 48m
Frontier
Sat 8/87:49 pm
SAT
- SEA
1 stop15h 15m
Frontier
Deal found 7/5![Frontier logo]()
$250
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 8/1412:36 pm
SEA
- SAT
1 stop9h 20m
Delta
Sun 8/236:04 pm
SAT
- SEA
1 stop7h 50m
Delta
Deal found 7/3![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/6. 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 8/2011:00 pm
SEA
- SAT
2 stops9h 35m
Southwest
Thu 8/2711:15 am
SAT
- SEA
1 stop9h 30m
Southwest
Deal found 7/6![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/271:16 pm
SEA
- SAT
1 stop6h 43m
United Airlines
Sun 8/305:30 am
SAT
- SEA
1 stop8h 14m
United Airlines
Deal found 7/2![United Airlines logo]()
$242
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 July 7, 2026.
Search for one-way flight options from Seattle to San Antonio. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.
This United Airlines deal was found by Cheapflights users on 7/3. 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
SEA
- SAT
1 stop6h 43m
United Airlines
Deal found 7/3![United Airlines logo]()
$119
This Delta deal was found by Cheapflights users on 7/2. 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 9/1012:36 pm
SEA
- SAT
1 stop9h 13m
Delta
Deal found 7/2![Delta logo]()
$124
This Super.com deal was found by Cheapflights users on 7/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Deal found 7/5![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 8/57:06 pm
SEA
- SAT
1 stop21h 48m
Frontier
Deal found 7/6![Frontier logo]()
$128
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 9/59:05 am
SEA
- SAT
2 stops11h 34m
United Airlines
Deal found 7/2![United Airlines logo]()
$129
This CheapOair deal was found by Cheapflights users on 7/6. 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 8/309:29 pm
SEA
- SAT
1 stop22h 00m
Frontier
Deal found 7/6![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:13 pm
SEA
- SAT
1 stop22h 24m
Frontier
Deal found 7/3![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Deal found 7/3![Frontier logo]()
$134
This Southwest deal was found by Cheapflights users on 7/3. 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.
Thu 9/1011:00 pm
SEA
- SAT
2 stops9h 35m
Southwest
Deal found 7/3![Southwest logo]()
$138
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:35 pm
SEA
- SAT
1 stop28h 09m
Frontier
Deal found 7/3![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 7/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:06 pm
SEA
- SAT
1 stop21h 38m
Frontier
Deal found 7/3![Frontier logo]()
$143
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 July 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $240 (Frontier) |
One-way from | $119 (United Airlines) |
Popular in | June |
Cheapest in | September |
Average price | $393 |
Good round-trip deal | $418 or less |
Good one-way deal | $223 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 2,558,603 searches. Data last updated July 7, 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 - SAT
SEASAT
Seattle/Tacoma Intl
Fri 9/4
5:30 am-3:54 pm
1 stop8h 24m
San Antonio
Mon 9/7
6:04 pm-11:54 pm
1 stop7h 50m
$247
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Fri 8/14
12:36 pm-11:56 pm
1 stop9h 20m
San Antonio
Fri 8/21
4:49 pm-11:44 pm
1 stop8h 55m
$247
Quickest round-trip
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Tue 9/22
2:30 pm-12:13 am
1 stop7h 43m
San Antonio
Thu 9/24
4:50 pm-10:10 pm
1 stop7h 20m
$247
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Tue 7/21
12:00 pm-12:35 am
2 stops10h 35m
San Antonio
Wed 7/29
8:25 pm-12:45 am
1 stop6h 20m
$308
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Thu 7/30
1:30 pm-1:40 am
2 stops10h 10m
San Antonio
Mon 8/3
2:40 pm-8:10 pm
1 stop7h 30m
$337
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Wed 9/9
11:59 pm-10:59 am
1 stop9h 00m
San Antonio
Wed 9/23
1:45 pm-11:26 pm
2 stops11h 41m
$348
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Tue 7/21
10:58 pm-5:00 am
Nonstop4h 02m
San Antonio
Wed 7/29
7:39 pm-9:17 am
1 stop15h 38m
$350
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Mon 9/21
9:45 am-8:15 pm
2 stops8h 30m
San Antonio
Sat 9/26
6:20 am-12:55 pm
2 stops8h 35m
$351
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Tue 8/25
9:05 am-5:56 pm
1 stop6h 51m
San Antonio
Wed 8/26
2:15 pm-9:58 pm
2 stops9h 43m
$352
SeattleSan Antonio
SEA - SAT
SEASAT
Seattle/Tacoma Intl
Thu 8/6
11:00 pm-10:35 am
2 stops9h 35m
San Antonio
Thu 8/13
3:30 pm-11:55 pm
2 stops10h 25m
$439
Showing 1-10 of 21 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 July.
| 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
Prices
More
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, September is the cheapest month in which you can book a flight from Seattle to San Antonio (average of $266). 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 July 7, 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.
Houston (IAH) – chosen by Cheapflights users on 33% 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 $168.
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 July 7, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, 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.
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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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Search flights from Seattle to San Antonio by cabin class
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Seattle and San Antonio flights
Browse other Seattle and San Antonio flight options. Last updated on July 7, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on July 7, 2026.
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Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 7, 2026.
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 2,558,603 searches. Data last updated July 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$255 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$297 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$176 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$180 | Average$390 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$201 | Average$310 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$215 | Average$360 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$217 | Average$398 | FlexibilityNo cancel fee | On-time75% |