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Cheap flights from Portland to San Antonio from $144

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:51 pm - 7:56 pmPDX  Portland-SAT San Antonio
22h 05m2 stops Los Angeles Denver Intl
Frontier Logo
6:47 pm - 1:03 pmSAT  San Antonio-PDX Portland
20h 16m1 stop Denver Intl
$376Frontier
Thu, Dec 3 - Sat, Dec 12
American Airlines Logo
6:51 am - 4:09 pmPDX  Portland-SAT San Antonio
7h 18m1 stop Los Angeles
American Airlines Logo
7:06 pm - 12:16 amSAT  San Antonio-PDX Portland
7h 10m1 stop Dallas/Fort Worth
$377American Airlines
Sat, Nov 14 - Sat, Nov 21
Southwest Logo
6:55 am - 3:35 pmPDX  Portland-SAT San Antonio
6h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
8:25 pm - 12:30 amSAT  San Antonio-PDX Portland
6h 05m1 stop Phoenix Sky Harbor Intl
$377Southwest
Wed, Dec 16 - Tue, Dec 22
Delta Logo
6:45 am - 5:25 pmPDX  Portland-SAT San Antonio
8h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:45 am - 12:18 pmSAT  San Antonio-PDX Portland
6h 33m1 stop Salt Lake City
$377Delta
Sat, Nov 14 - Tue, Nov 17
Delta Logo
6:20 am - 2:55 pmPDX  Portland-SAT San Antonio
6h 35m1 stop Los Angeles
Delta Logo
7:01 am - 12:00 pmSAT  San Antonio-PDX Portland
6h 59m1 stop Los Angeles
$377Delta
Thu, Dec 3 - Tue, Dec 8
Southwest Logo
5:55 am - 6:25 pmPDX  Portland-SAT San Antonio
10h 30m2 stops Phoenix Sky Harbor Intl Los Angeles
Southwest Logo
11:00 am - 3:00 pmSAT  San Antonio-PDX Portland
6h 00m1 stop Phoenix Sky Harbor Intl
$378Southwest
Sat, Nov 14 - Tue, Nov 17
Frontier Logo
12:31 pm - 9:34 pmPDX  Portland-SAT San Antonio
7h 03m1 stop Las Vegas Harry Reid Intl
Frontier Logo
10:29 pm - 11:19 amSAT  San Antonio-PDX Portland
14h 50m1 stop Las Vegas Harry Reid Intl
$378Frontier
Mon, Nov 2 - Wed, Nov 4
United Airlines Logo
10:59 am - 10:51 pmPDX  Portland-SAT San Antonio
9h 52m2 stops San Francisco Houston George Bush Intcntl
United Airlines Logo
8:56 am - 1:25 pmSAT  San Antonio-PDX Portland
6h 29m1 stop Denver Intl
$382United Airlines
Wed, Nov 4 - Sat, Nov 7
American Airlines Logo
2:34 pm - 12:06 amPDX  Portland-SAT San Antonio
7h 32m1 stop Dallas/Fort Worth
American Airlines Logo
7:06 pm - 12:16 amSAT  San Antonio-PDX Portland
7h 10m1 stop Dallas/Fort Worth
$402American Airlines
Thu, Nov 19 - Sat, Nov 21
United Airlines Logo
12:57 pm - 9:26 pmPDX  Portland-SAT San Antonio
6h 29m1 stop Houston George Bush Intcntl
United Airlines Logo
6:03 pm - 11:15 pmSAT  San Antonio-PDX Portland
7h 12m1 stop Houston George Bush Intcntl
$408United Airlines
Mon, Nov 16 - Sun, Nov 22

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Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets
Delta
Dec 2
PDX6:20 amPortland
6h 35m
1 stop
SAT2:55 pmSan Antonio
Dec 10
SAT7:01 amSan Antonio
6h 59m
1 stop
PDX12:00 pmPortland
$377
Delta
Dec 2
PDX5:30 amPortland
16h 35m
2 stops
SAT12:05 amSan Antonio
Dec 9
SAT6:08 pmSan Antonio
7h 51m
1 stop
PDX11:59 pmPortland
$389
Delta
Dec 2
PDX11:32 amPortland
10h 33m
2 stops
SAT12:05 amSan Antonio
Dec 8
SAT12:51 pmSan Antonio
8h 07m
2 stops
PDX6:58 pmPortland
$401

Southwest flights from Portland to San Antonio

Our best Southwest deals on Portland to San Antonio flight tickets
Southwest
Nov 14
PDX5:55 amPortland
10h 30m
2 stops
SAT6:25 pmSan Antonio
Nov 21
SAT6:05 amSan Antonio
8h 00m
1 stop
PDX12:05 pmPortland
$382
Southwest
Nov 14
PDX5:55 amPortland
10h 30m
2 stops
SAT6:25 pmSan Antonio
Nov 17
SAT3:00 pmSan Antonio
8h 50m
2 stops
PDX9:50 pmPortland
$387
Southwest
Nov 4
PDX6:40 amPortland
13h 50m
2 stops
SAT10:30 pmSan Antonio
Nov 7
SAT7:25 amSan Antonio
9h 15m
2 stops
PDX2:40 pmPortland
$393

momondo Fare Finder

 
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 Portland - SAT San Antonio

PDXSAT

Portland

Thu 12/3

7:51 pm-7:56 pm

2 stops22h 05m

San Antonio

Sat 12/12

6:47 pm-1:03 pm

1 stop20h 16m

$376

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 11/14

6:51 am-4:09 pm

1 stop7h 18m

San Antonio

Sat 11/21

7:06 pm-12:16 am

1 stop7h 10m

$377
Quickest round-trip

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 12/16

6:55 am-3:35 pm

1 stop6h 40m

San Antonio

Tue 12/22

8:25 pm-12:30 am

1 stop6h 05m

$377

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 11/14

6:45 am-5:25 pm

1 stop8h 40m

San Antonio

Tue 11/17

7:45 am-12:18 pm

1 stop6h 33m

$377

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 12/3

6:20 am-2:55 pm

1 stop6h 35m

San Antonio

Tue 12/8

7:01 am-12:00 pm

1 stop6h 59m

$377

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 11/14

5:55 am-6:25 pm

2 stops10h 30m

San Antonio

Tue 11/17

11:00 am-3:00 pm

1 stop6h 00m

$378

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Mon 11/2

12:31 pm-9:34 pm

1 stop7h 03m

San Antonio

Wed 11/4

10:29 pm-11:19 am

1 stop14h 50m

$378

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 11/4

10:59 am-10:51 pm

2 stops9h 52m

San Antonio

Sat 11/7

8:56 am-1:25 pm

1 stop6h 29m

$382

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 11/19

2:34 pm-12:06 am

1 stop7h 32m

San Antonio

Sat 11/21

7:06 pm-12:16 am

1 stop7h 10m

$402

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Mon 11/16

12:57 pm-9:26 pm

1 stop6h 29m

San Antonio

Sun 11/22

6:03 pm-11:15 pm

1 stop7h 12m

$408

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

How to get the cheapest flight ticket from Portland to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland and San Antonio?

Prices are currently typical for flights on this route.

Typical prices usually range from $369 to $497.
The lowest price recently found on this route was $376.

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of February, then book flights to San Antonio from Portland during November instead. Flights to San Antonio in November, while not as cheap as those in February, still average around $403.

How far in advance should I book a flight from Portland to San Antonio?

You are more likely to see cheaper flights to San Antonio from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Portland for as low as $367 on momondo.

How have Portland to San Antonio flight prices changed over time?

As of October 2026, prices for Portland to San Antonio flights are approximately 62% more expensive when compared to flights at the same time last year.

When to book flights from Portland to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to San Antonio (PDX to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to San Antonio

Best Price Found

$144

Fastest flight time

5h 55m

Direct flights

None
The best one-way flight to San Antonio from Portland in the past 72 hours is $144. The best round-trip flight deal from Portland to San Antonio found on momondo in the last 72 hours is $376.
The fastest flight from Portland to San Antonio takes 5h 55m
There are no direct flights from Portland to San Antonio. There are no popular flight routes from Portland to San Antonio.
Search flight deals

Frequently asked questions about flying from Portland to San Antonio

  • How far is Portland to San Antonio by plane?

    San Antonio is 1717.5 mi away from Portland. By plane, this route typically takes 5h 55m.

  • When did momondo last update prices for flights from Portland Airport to San Antonio Airport?

    Prices for flights from Portland Airport to San Antonio Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to San Antonio Airport?

  • How old do you have to be to fly from Portland Airport to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Portland to San Antonio?

Best airlines flying from Portland to San Antonio

Compare and see reviews for airlines that fly from Portland to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $136Free CancellationRating
5.5
2,525 reviews
Search Frontier flights
United AirlinesPriceFrom $242Free CancellationRating
7.3
10,390 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $248Free CancellationRating
7.9
13,088 reviews
Search Alaska Airlines flights
DeltaPriceFrom $284Free CancellationRating
7.8
8,649 reviews
Search Delta flights
American AirlinesPriceFrom $298Free CancellationRating
7.0
12,182 reviews
Search American Airlines flights
SouthwestPriceFrom $340Free CancellationRating
7.9
4,211 reviews
Search Southwest flights

Traveling to a place near San Antonio?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to San Antonio?

Finding the right flight to San Antonio from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Antonio quick and easy, saving you time and money.

Can I find flights from Portland to San Antonio with flexible booking policies on momondo?

Flights from Portland to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to San Antonio?

momondo helps you find the best flight between Portland and San Antonio by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to San Antonio right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to San Antonio flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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