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$129+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SAT
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
1 adult, Economy
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Cheap flight deals from Portland to San Antonio

Cheapest flights from Portland to San Antonio
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 May 20, 2026.

This CheapOair deal was found by Cheapflights users on 5/18. 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 6/158:42 pm
PDX
-
SAT
1 stop21h 29m
Frontier
Wed 6/178:56 pm
SAT
-
PDX
1 stop24h 51m
Frontier
Deal found 5/18$299
This CheapOair deal was found by Cheapflights users on 5/17. 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.
Thu 9/312:26 pm
PDX
-
SAT
1 stop28h 30m
Frontier
Tue 9/87:51 pm
SAT
-
PDX
1 stop20h 36m
Frontier
Deal found 5/17$300
This CheapOair deal was found by Cheapflights users on 5/17. 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.
Sat 7/1812:26 pm
PDX
-
SAT
1 stop28h 28m
Frontier
Sun 7/267:51 pm
SAT
-
PDX
1 stop23h 02m
Frontier
Deal found 5/17$314
This CheapOair deal was found by Cheapflights users on 5/18. 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 6/1212:26 pm
PDX
-
SAT
1 stop28h 30m
Frontier
Sun 6/147:51 pm
SAT
-
PDX
1 stop23h 06m
Frontier
Deal found 5/18$320
This CheapOair deal was found by Cheapflights users on 5/18. 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.
Thu 6/412:35 pm
PDX
-
SAT
1 stop28h 24m
Frontier
Mon 6/87:54 pm
SAT
-
PDX
1 stop22h 41m
Frontier
Deal found 5/18$334
This Trip.com deal was found by Cheapflights users on 5/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:15 am
PDX
-
SAT
1 stop6h 59m
Frontier
Sun 6/78:59 pm
SAT
-
PDX
1 stop15h 21m
Frontier
Deal found 5/17$337
This CheapOair deal was found by Cheapflights users on 5/18. 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 6/158:42 pm
PDX
-
SAT
1 stop21h 29m
Frontier
Fri 6/197:51 pm
SAT
-
PDX
1 stop23h 06m
Frontier
Deal found 5/18$339
This CheapOair deal was found by Cheapflights users on 5/18. 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 6/198:42 pm
PDX
-
SAT
1 stop21h 29m
Frontier
Tue 6/237:51 pm
SAT
-
PDX
1 stop22h 44m
Frontier
Deal found 5/18$340
This Expedia deal was found by Cheapflights users on 5/17. 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.
Tue 10/67:06 am
PDX
-
SAT
1 stop7h 07m
Multiple Airlines
Tue 10/1312:16 pm
SAT
-
PDX
1 stop6h 19m
Multiple Airlines
Deal found 5/17$341
This CheapOair deal was found by Cheapflights users on 5/17. 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 7/155:16 pm
PDX
-
SAT
1 stop23h 38m
Frontier
Sun 7/198:59 pm
SAT
-
PDX
1 stop23h 05m
Frontier
Deal found 5/17$349
This Frontier deal was found by Cheapflights users on 5/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/812:35 pm
PDX
-
SAT
1 stop28h 21m
Frontier
Tue 6/167:51 pm
SAT
-
PDX
1 stop22h 44m
Frontier
Deal found 5/19$351

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 May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(CheapOair)

One-way from

$129
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$447
Provider with most accurate pricing for Portland-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-San Antonio flights.
Search Deals
From Portland to San Antonio
Search Deals
One-way flight from Portland to San Antonio
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 2,558,603 searches. Data last updated May 20, 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

Price

Cheapest round-trip

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 8/19

11:17 am-11:54 pm

2 stops10h 37m

San Antonio

Sat 8/22

7:30 am-5:14 pm

2 stops11h 44m

$421

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Tue 6/16

1:02 pm-10:42 pm

1 stop7h 40m

San Antonio

Tue 6/23

5:30 am-9:47 am

1 stop6h 17m

$442

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 9/23

12:30 pm-9:55 pm

1 stop7h 25m

San Antonio

Sun 9/27

1:35 pm-8:25 pm

2 stops8h 50m

$449
Quickest round-trip

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 7/15

3:20 pm-10:55 pm

1 stop5h 35m

San Antonio

Sun 7/19

5:30 am-11:50 am

2 stops8h 20m

$449

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 9/2

6:55 am-6:00 pm

2 stops9h 05m

San Antonio

Mon 9/7

11:10 am-7:20 pm

2 stops10h 10m

$454

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 6/8

9:20 pm-10:45 am

1 stop11h 25m

San Antonio

Tue 6/9

3:55 pm-10:10 pm

2 stops8h 15m

$460

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 8/10

12:20 pm-10:15 pm

1 stop7h 55m

San Antonio

Fri 8/14

1:25 pm-9:35 pm

2 stops10h 10m

$465

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Tue 9/1

6:15 am-5:16 pm

1 stop9h 01m

San Antonio

Sun 9/6

6:30 am-6:41 pm

2 stops14h 11m

$486

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 9/3

5:30 am-5:25 pm

2 stops9h 55m

San Antonio

Tue 9/8

8:00 am-12:31 pm

1 stop6h 31m

$486

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 6/18

5:30 am-11:52 pm

2 stops16h 22m

San Antonio

Sat 6/20

7:10 am-12:25 pm

1 stop7h 15m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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 69 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, August is the cheapest month in which you can book a flight from Portland to San Antonio (average of $304). Flying from Portland to San Antonio in June is currently the most expensive (average of $487). 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?

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 May 20, 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.
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,284 reviews
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,454 reviews
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,736 reviews
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,642 reviews
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,944 reviews
Southwest
7.9
Good
4,284 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

7.9

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

  • How long is the flight from Portland to San Antonio?

    There are many flights that can get you from Portland to San Antonio in 7h 25m. Fly via Delta, United Airlines, or Southwest to get the fastest option. The distance between Portland and San Antonio is about 1712 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Portland to San Antonio round-trip?

    Flying on Frontier is currently your cheapest option to San Antonio, with prices starting at $136. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $188 and $236, respectively. Frontier is currently priced 66% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland to San Antonio one-way?

    $85 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $133 and $143, respectively.

  • Can I find deals for flights from Portland to San Antonio that include hotel bookings?

    Yes. In addition to deals on Portland to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to San Antonio.

  • Can I find deals for business class flights from Portland to San Antonio?

    Yes. Cheapflights offers flight deals from Portland to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Portland to San Antonio (average of $304). Flying from Portland to San Antonio in June is currently the most expensive (average of $487). 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.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

Browse thousands of different options on Cheapflights for your next trip

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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 2,558,603 searches. Data last updated May 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$136Average$247FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$188Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$236Average$401FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$248Average$380FlexibilityNo cancel feeOn-time75%
DeltaCheapest$270Average$415FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$300Average$436FlexibilityNo cancel feeOn-time63%

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