$103+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAT
Sep 9 — Sep 161
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 September, booked 47 days in advance, depart on a Thursday or Friday 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 August 10, 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 August 10, 2026.
This Frontier deal was found by Cheapflights users on 8/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:45 pm -
1 stop11h 59m
Thu 10/1510:41 pm -
1 stop13h 19m
Deal found 8/5![Frontier logo]()
$196
This Frontier deal was found by Cheapflights users on 8/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:37 pm -
1 stop26h 54m
Wed 9/210:24 pm -
1 stop19h 04m
Deal found 8/5![Frontier logo]()
$197
This Southwest deal was found by Cheapflights users on 8/9. 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 11/125:15 am -
1 stop10h 50m
Tue 11/172:40 pm -
1 stop10h 50m
Deal found 8/9![Southwest logo]()
$203
This CheapOair deal was found by Cheapflights users on 8/5. 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.
Sat 10/34:27 pm -
1 stop24h 58m
Tue 10/63:19 pm -
1 stop20h 23m
Deal found 8/5![Frontier logo]()
$206
This Super.com deal was found by Cheapflights users on 8/9. 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 9/17:07 pm -
1 stop22h 24m
Sun 9/1312:39 pm -
1 stop23h 03m
Deal found 8/9![Frontier logo]()
$207
This Southwest deal was found by Cheapflights users on 8/9. 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 11/59:25 pm -
1 stop12h 10m
Mon 11/95:55 pm -
2 stops9h 00m
Deal found 8/9![Southwest logo]()
$208
This Trip.com deal was found by Cheapflights users on 8/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop15h 32m
Tue 9/153:19 pm -
1 stop20h 23m
Deal found 8/6![Frontier logo]()
$209
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:37 pm -
1 stop26h 54m
Tue 9/88:26 pm -
1 stop20h 42m
Deal found 8/5![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/39:29 pm -
1 stop22h 00m
Fri 9/119:50 pm -
1 stop13h 52m
Deal found 8/8![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/39:29 pm -
1 stop22h 00m
Wed 9/93:19 pm -
1 stop20h 23m
Deal found 8/8![Frontier logo]()
$222
This Southwest deal was found by Cheapflights users on 8/9. 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 12/19:25 am -
1 stop10h 15m
Sat 12/51:55 pm -
1 stop7h 15m
Deal found 8/9![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 8/9. 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 11/135:30 am -
2 stops8h 45m
Tue 11/176:10 am -
1 stop8h 00m
Deal found 8/9![Southwest logo]()
$227
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 August 10, 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 August 10, 2026.
This Delta deal was found by Cheapflights users on 8/5. 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.
Wed 8/195:30 am -
1 stop8h 24m
Fri 8/286:04 pm -
1 stop7h 50m
Deal found 8/5![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 8/4. 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 9/311:00 pm -
2 stops9h 35m
Thu 9/107:50 pm -
1 stop6h 55m
Deal found 8/4![Southwest logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/8. 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 8/1912:44 pm -
1 stop6h 08m
Fri 8/281:45 pm -
2 stops11h 41m
Deal found 8/8![United Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 8/5. 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.
Wed 9/27:10 am -
2 stops8h 45m
Tue 9/812:55 pm -
2 stops9h 25m
Deal found 8/5![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 8/8. 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 9/59:15 am -
1 stop11h 40m
Sat 9/122:30 pm -
2 stops9h 00m
Deal found 8/8![Southwest logo]()
$327
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 8/219:05 am -
2 stops11h 34m
Sun 8/237:14 am -
1 stop9h 10m
Deal found 8/7![United Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 8/4. 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.
Fri 9/411:00 pm -
1 stop9h 00m
Mon 9/75:35 am -
2 stops11h 25m
Deal found 8/4![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/16:30 am -
2 stops11h 28m
Thu 9/37:14 am -
1 stop9h 10m
Deal found 8/8![United Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 8/8. 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 8/1311:50 am -
2 stops8h 25m
Tue 8/181:30 pm -
2 stops7h 40m
Deal found 8/8![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 8/8. 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 9/145:00 am -
2 stops7h 55m
Sun 9/205:40 pm -
2 stops9h 15m
Deal found 8/8![Southwest logo]()
$473
Last-minute flights from Seattle to San AntonioDiscover last-minute flight deals from Seattle to San Antonio. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Antonio. Data last updated August 10, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:29 pm -
1 stop22h 00m
Mon 8/3110:24 pm -
1 stop14h 15m
Deal found 8/6![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 8/5. 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 8/267:06 pm -
1 stop22h 25m
Sun 8/308:26 pm -
1 stop14h 53m
Deal found 8/5![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 8/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:37 pm -
1 stop26h 54m
Wed 9/210:24 pm -
1 stop19h 04m
Deal found 8/5![Frontier logo]()
$197
This Super.com deal was found by Cheapflights users on 8/9. 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 9/17:07 pm -
1 stop22h 24m
Sun 9/1312:39 pm -
1 stop23h 03m
Deal found 8/9![Frontier logo]()
$207
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:37 pm -
1 stop26h 54m
Tue 9/88:26 pm -
1 stop20h 42m
Deal found 8/5![Frontier logo]()
$212
This CheapOair deal was found by Cheapflights users on 8/6. 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.
Wed 9/28:48 pm -
1 stop22h 41m
Mon 9/710:24 pm -
1 stop14h 15m
Deal found 8/6![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/39:29 pm -
1 stop22h 00m
Fri 9/119:50 pm -
1 stop13h 52m
Deal found 8/8![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/39:29 pm -
1 stop22h 00m
Wed 9/93:19 pm -
1 stop20h 23m
Deal found 8/8![Frontier logo]()
$222
This CheapOair deal was found by Cheapflights users on 8/5. 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.
Thu 9/39:29 pm -
1 stop22h 00m
Mon 9/710:24 pm -
1 stop14h 15m
Deal found 8/5![Frontier logo]()
$241
This Trip.com deal was found by Cheapflights users on 8/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop15h 32m
Tue 9/153:19 pm -
1 stop20h 23m
Deal found 8/6![Frontier logo]()
$209
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:45 pm -
1 stop11h 59m
Sun 9/2012:39 pm -
1 stop23h 03m
Deal found 8/6![Frontier logo]()
$196
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 August 10, 2026.
Search for one-way flight options from Seattle to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:48 pm -
1 stop22h 41m
Deal found 8/6![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 8/7. 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 10/229:16 pm -
1 stop12h 32m
Deal found 8/7![Frontier logo]()
$104
This CheapOair deal was found by Cheapflights users on 8/7. 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 9/104:27 pm -
1 stop24h 58m
Deal found 8/7![Frontier logo]()
$107
This Super.com deal was found by Cheapflights users on 8/7. 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.
Thu 8/277:06 pm -
1 stop22h 25m
Deal found 8/7![Frontier logo]()
$128
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:06 pm -
1 stop22h 25m
Deal found 8/5![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 8/7. 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 9/149:45 pm -
1 stop14h 35m
Deal found 8/7![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 8/5. 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.
Sun 8/309:29 pm -
1 stop22h 00m
Deal found 8/5![Frontier logo]()
$137
This Delta deal was found by Cheapflights users on 8/7. 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 9/112:36 pm -
1 stop9h 20m
Deal found 8/7![Delta logo]()
$139
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Tue 9/19:05 am -
2 stops11h 34m
Deal found 8/6![United Airlines logo]()
$144
This Super.com deal was found by Cheapflights users on 8/5. 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.
Wed 8/127:06 pm -
1 stop21h 48m
Deal found 8/5![Frontier logo]()
$148
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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $196 (Frontier) |
One-way from | $103 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $378 |
Good round-trip deal | $387 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 August 10, 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
Wed 8/19
5:30 am-3:54 pm
1 stop8h 24m
San Antonio
Fri 8/28
6:04 pm-11:54 pm
1 stop7h 50m
$277
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Thu 9/3
11:00 pm-10:35 am
2 stops9h 35m
San Antonio
Thu 9/10
7:50 pm-12:45 am
1 stop6h 55m
$303
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Wed 9/2
7:10 am-5:55 pm
2 stops8h 45m
San Antonio
Tue 9/8
12:55 pm-8:20 pm
2 stops9h 25m
$308
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Sat 9/5
9:15 am-10:55 pm
1 stop11h 40m
San Antonio
Sat 9/12
2:30 pm-9:30 pm
2 stops9h 00m
$327
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Fri 9/4
11:00 pm-10:00 am
1 stop9h 00m
San Antonio
Mon 9/7
5:35 am-3:00 pm
2 stops11h 25m
$387
Quickest round-trip
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Thu 8/13
11:50 am-10:15 pm
2 stops8h 25m
San Antonio
Tue 8/18
1:30 pm-7:10 pm
2 stops7h 40m
$399
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Wed 8/19
12:44 pm-8:52 pm
1 stop6h 08m
San Antonio
Fri 8/28
1:45 pm-11:26 pm
2 stops11h 41m
$408
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Fri 8/21
9:05 am-10:39 pm
2 stops11h 34m
San Antonio
Sun 8/23
7:14 am-2:24 pm
1 stop9h 10m
$462
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Tue 9/1
6:30 am-7:58 pm
2 stops11h 28m
San Antonio
Thu 9/3
7:14 am-2:24 pm
1 stop9h 10m
$462
SeattleSan Antonio
SEA Seattle/Tacoma Intl - SAT San Antonio
SEASAT
Seattle/Tacoma Intl
Mon 9/14
5:00 am-2:55 pm
2 stops7h 55m
San Antonio
Sun 9/20
5:40 pm-12:55 am
2 stops9h 15m
$473
Showing 1-10 of 18 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 August.
| 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
Airlines
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, 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 August 10, 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 30% 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 August 10, 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.
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
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 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$307 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$176 | Average$281 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$194 | Average$395 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$201 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$216 | Average$360 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$217 | Average$404 | FlexibilityNo cancel fee | On-time75% |