$128+ Cheap flights from Portland to San Antonio (PDX - 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SAT
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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.Cheap flight deals from Portland to San Antonio
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Best
Last-minute
One-way
Cheapest flights from Portland to San AntonioExplore the most affordable flight options available from Portland to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from Portland to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This Frontier deal was found by Cheapflights users on 8/16. 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.
Mon 10/512:38 pm -
1 stop28h 47m
Mon 10/128:21 pm -
1 stop16h 33m
Deal found 8/16![Frontier logo]()
$260
This Expedia deal was found by Cheapflights users on 8/17. 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 10/1512:11 pm -
1 stop7h 38m
Fri 10/3011:08 am -
1 stop7h 27m
Deal found 8/17![Frontier logo]()
$266
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/2812:39 pm -
1 stop23h 41m
Sat 10/38:20 pm -
1 stop17h 23m
Deal found 8/18![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/2512:38 pm -
1 stop28h 47m
Wed 9/303:19 pm -
1 stop22h 17m
Deal found 8/18![Frontier logo]()
$276
This Orbitz deal was found by Cheapflights users on 8/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:47 pm -
1 stop16h 25m
Fri 11/612:43 pm -
1 stop9h 25m
Deal found 8/16![Frontier logo]()
$281
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/15:56 pm -
1 stop23h 35m
Wed 9/303:19 pm -
1 stop22h 17m
Deal found 8/17![Frontier logo]()
$283
This CheapOair deal was found by Cheapflights users on 8/14. 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 10/1612:25 pm -
1 stop23h 27m
Mon 10/198:21 pm -
1 stop16h 33m
Deal found 8/14![Frontier logo]()
$284
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/2512:38 pm -
1 stop28h 47m
Sun 9/278:20 pm -
1 stop17h 23m
Deal found 8/17![Frontier logo]()
$291
This CheapOair deal was found by Cheapflights users on 8/14. 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 8/255:56 pm -
1 stop23h 35m
Thu 8/2710:24 pm -
1 stop20h 57m
Deal found 8/14![Frontier logo]()
$298
This CheapOair deal was found by Cheapflights users on 8/16. 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 9/2412:38 pm -
1 stop28h 47m
Thu 10/18:20 pm -
1 stop17h 23m
Deal found 8/16![Frontier logo]()
$303
This CheapOair deal was found by Cheapflights users on 8/16. 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 9/411:40 am -
1 stop7h 49m
Wed 9/93:19 pm -
1 stop22h 17m
Deal found 8/16![Frontier logo]()
$309
Best flights from Portland to San AntonioDiscover carefully curated flight deals from Portland to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from Portland to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
This CheapOair deal was found by Cheapflights users on 8/14. 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 8/255:56 pm -
1 stop23h 35m
Thu 8/2710:24 pm -
1 stop20h 57m
Deal found 8/14![Frontier logo]()
$298
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/164:07 pm -
1 stop5h 50m
Sat 9/191:45 pm -
1 stop6h 04m
Deal found 8/18![United Airlines logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/97:09 am -
1 stop7h 10m
Tue 9/155:29 pm -
1 stop6h 32m
Deal found 8/18![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/18. 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 9/910:57 pm -
1 stop9h 04m
Tue 9/156:00 am -
1 stop8h 37m
Deal found 8/18![Delta logo]()
$397
This Southwest deal was found by Cheapflights users on 8/14. 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 10/15:30 am -
2 stops8h 45m
Thu 10/226:45 pm -
2 stops8h 35m
Deal found 8/14![Southwest logo]()
$405
This United Airlines deal was found by Cheapflights users on 8/15. 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 9/2912:45 pm -
1 stop5h 57m
Sat 10/35:30 am -
1 stop6h 06m
Deal found 8/15![United Airlines logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 10/255:06 am -
1 stop9h 10m
Sat 10/315:14 pm -
1 stop6h 42m
Deal found 8/14![Alaska Airlines logo]()
$412
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/228:40 am -
1 stop6h 15m
Tue 9/299:00 am -
1 stop8h 06m
Deal found 8/16![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/18. 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 9/115:10 pm -
1 stop5h 21m
Sun 9/136:07 pm -
1 stop7h 03m
Deal found 8/18![Delta logo]()
$432
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/235:30 am -
2 stops9h 25m
Wed 9/305:30 am -
1 stop5h 58m
Deal found 8/16![United Airlines logo]()
$397
Last-minute flights from Portland to San AntonioDiscover last-minute flight deals from Portland to San Antonio. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Antonio. Data last updated August 19, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/16. 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 8/255:56 pm -
1 stop23h 35m
Thu 8/2710:24 pm -
1 stop20h 57m
Deal found 8/16![Frontier logo]()
$298
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/15:56 pm -
1 stop23h 35m
Wed 9/303:19 pm -
1 stop22h 17m
Deal found 8/17![Frontier logo]()
$283
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/25:56 pm -
1 stop23h 35m
Mon 9/78:26 pm -
1 stop22h 45m
Deal found 8/17![Frontier logo]()
$323
This CheapOair deal was found by Cheapflights users on 8/16. 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 9/411:40 am -
1 stop7h 49m
Wed 9/93:19 pm -
1 stop22h 17m
Deal found 8/16![Frontier logo]()
$309
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/411:40 am -
1 stop7h 49m
Mon 9/78:26 pm -
1 stop22h 45m
Deal found 8/17![Frontier logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/1112:38 pm -
1 stop28h 47m
Tue 9/158:20 pm -
2 stops39h 47m
Deal found 8/18![Frontier logo]()
$330
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/1412:39 pm -
1 stop23h 41m
Thu 9/1712:39 pm -
1 stop25h 15m
Deal found 8/19![Frontier logo]()
$308
This Expedia deal was found by Cheapflights users on 8/16. 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.
Fri 9/1812:38 pm -
1 stop28h 47m
Mon 9/285:29 pm -
1 stop6h 32m
Deal found 8/16![Multiple Airlines logo]()
$331
This CheapOair deal was found by Cheapflights users on 8/16. 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 9/2412:38 pm -
1 stop28h 47m
Thu 10/18:20 pm -
1 stop17h 23m
Deal found 8/16![Frontier logo]()
$303
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/2512:38 pm -
1 stop28h 47m
Wed 9/303:19 pm -
1 stop22h 17m
Deal found 8/18![Frontier logo]()
$276
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/2512:38 pm -
1 stop28h 47m
Sun 9/278:20 pm -
1 stop17h 23m
Deal found 8/17![Frontier logo]()
$291
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/2812:39 pm -
1 stop23h 41m
Sat 10/38:20 pm -
1 stop17h 23m
Deal found 8/18![Frontier logo]()
$268
One-way flights from Portland to San AntonioSearch for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 10/293:47 pm -
1 stop16h 25m
Deal found 8/14![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 8/18. 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 10/1512:11 pm -
1 stop7h 38m
Deal found 8/18![Frontier logo]()
$129
This Booking.com deal was found by Cheapflights users on 8/17. 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.
Mon 10/512:38 pm -
1 stop28h 47m
Deal found 8/17![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 8/16. 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.
Fri 10/2312:25 pm -
1 stop7h 24m
Deal found 8/16![Frontier logo]()
$137
This Expedia deal was found by Cheapflights users on 8/14. 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.
Fri 9/2512:38 pm -
1 stop28h 47m
Deal found 8/14![Frontier logo]()
$143
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:40 am -
1 stop7h 49m
Deal found 8/19![Frontier logo]()
$144
This Trip.com deal was found by Cheapflights users on 8/19. 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.
Sat 10/312:24 pm -
1 stop21h 20m
Deal found 8/19![Frontier logo]()
$147
This Booking.com deal was found by Cheapflights users on 8/15. 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 9/15:56 pm -
1 stop23h 35m
Deal found 8/15![Frontier logo]()
$150
This American Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 9/1212:01 pm -
1 stop8h 49m
Deal found 8/15![American Airlines logo]()
$189
Find flight deals from Portland to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $260 (Frontier) |
One-way from | $128 (Kiwi.com) |
Popular in | July |
Cheapest in | September |
Average price | $406 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 August 19, 2026.
Use the filters below to find and compare flights from Portland to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Tue 8/25
5:56 pm-7:31 pm
1 stop23h 35m
San Antonio
Thu 8/27
10:24 pm-5:21 pm
1 stop20h 57m
$298
Quickest round-trip
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Wed 9/16
4:07 pm-11:57 pm
1 stop5h 50m
San Antonio
Sat 9/19
1:45 pm-5:49 pm
1 stop6h 04m
$377
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Wed 9/9
7:09 am-4:19 pm
1 stop7h 10m
San Antonio
Tue 9/15
5:29 pm-10:01 pm
1 stop6h 32m
$377
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Tue 9/29
12:45 pm-8:42 pm
1 stop5h 57m
San Antonio
Sat 10/3
5:30 am-9:36 am
1 stop6h 06m
$377
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Tue 9/22
8:40 am-4:55 pm
1 stop6h 15m
San Antonio
Tue 9/29
9:00 am-3:06 pm
1 stop8h 06m
$377
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Wed 9/9
10:57 pm-10:01 am
1 stop9h 04m
San Antonio
Tue 9/15
6:00 am-12:37 pm
1 stop8h 37m
$397
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Wed 9/23
5:30 am-4:55 pm
2 stops9h 25m
San Antonio
Wed 9/30
5:30 am-9:28 am
1 stop5h 58m
$397
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Thu 10/1
5:30 am-4:15 pm
2 stops8h 45m
San Antonio
Thu 10/22
6:45 pm-1:20 am
2 stops8h 35m
$405
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Sun 10/25
5:06 am-4:16 pm
1 stop9h 10m
San Antonio
Sat 10/31
5:14 pm-9:56 pm
1 stop6h 42m
$412
PortlandSan Antonio
PDX Portland - SAT San Antonio
PDXSAT
Portland
Fri 9/11
5:10 pm-12:31 am
1 stop5h 21m
San Antonio
Sun 9/13
6:07 pm-11:10 pm
1 stop7h 03m
$432
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to San Antonio in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Portland with our price prediction graph.
PDX-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 Portland to San Antonio
How far ahead should I book a flight from Portland to San Antonio?
Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland 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 Portland to San Antonio?
Currently, September is the cheapest month in which you can book a flight from Portland to San Antonio (average of $334). Flying from Portland to San Antonio in July is currently the most expensive (average of $516). 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.
How much does it cost to fly round-trip from Portland to San Antonio?
Airfare is below average for this route at the moment.
Portland to San Antonio flights typically cost between $358 and $498 in October.The cheapest round-trip price found within the last 5 days was $260 on Frontier (Oct 5-Oct 12).
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 19, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to San Antonio. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Portland to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Portland and San Antonio flights
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Top 6 airlines flying from Portland to San Antonio
Discover the top 6 airlines that operate flights from Portland 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 August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$136 | Average$328 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$431 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$247 | Average$380 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$268 | Average$431 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$461 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$316 | Average$443 | FlexibilityNo cancel fee | On-time63% |