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Cheap flights from Portland to San Antonio from $134

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
5:10 pm - 6:01 pmPDX  Portland-SAT San Antonio
22h 51m1 stop Denver Intl
Frontier Logo
11:48 am - 9:33 pmSAT  San Antonio-PDX Portland
11h 45m1 stop Las Vegas Harry Reid Intl
$258Frontier
Tue, Dec 15 - Tue, Dec 22
Frontier Logo
10:10 pm - 3:18 pmPDX  Portland-SAT San Antonio
15h 08m1 stop Las Vegas Harry Reid Intl
Frontier Logo
8:28 pm - 4:07 pmSAT  San Antonio-PDX Portland
21h 39m1 stop Denver Intl
$265Frontier
Wed, Nov 25 - Mon, Nov 30
Multiple Airlines Logo
4:29 pm - 7:27 pmPDX  Portland-SAT San Antonio
24h 58m1 stop Denver Intl
Multiple Airlines Logo
5:08 pm - 10:23 pmSAT  San Antonio-PDX Portland
7h 15m1 stop Seattle/Tacoma Intl
$333Multiple Airlines
Thu, Jan 14 - Wed, Jan 20
Multiple Airlines Logo
10:59 pm - 11:01 amPDX  Portland-SAT San Antonio
10h 02m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:22 pm - 5:00 pmSAT  San Antonio-PDX Portland
22h 38m2 stops Denver Intl Phoenix Sky Harbor Intl
$340Multiple Airlines
Thu, Jan 14 - Wed, Jan 20
Southwest Logo
6:55 am - 3:35 pmPDX  Portland-SAT San Antonio
6h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
11:00 am - 3:00 pmSAT  San Antonio-PDX Portland
6h 00m1 stop Phoenix Sky Harbor Intl
$372Southwest
Tue, Dec 1 - Tue, Dec 8
Southwest Logo
6:55 am - 3:35 pmPDX  Portland-SAT San Antonio
6h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
11:00 am - 3:00 pmSAT  San Antonio-PDX Portland
6h 00m1 stop Phoenix Sky Harbor Intl
$372Southwest
Wed, Dec 2 - Wed, Dec 9
Delta Logo
11:10 pm - 9:48 amPDX  Portland-SAT San Antonio
8h 38m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:01 am - 12:00 pmSAT  San Antonio-PDX Portland
6h 59m1 stop Los Angeles
$377Delta
Wed, Dec 2 - Mon, Dec 7
Delta Logo
5:23 pm - 12:48 amPDX  Portland-SAT San Antonio
5h 25m1 stop Salt Lake City
Delta Logo
7:25 am - 12:32 pmSAT  San Antonio-PDX Portland
7h 07m1 stop Salt Lake City
$377Delta
Wed, Feb 10 - Tue, Feb 16
American Airlines Logo
2:24 pm - 11:09 pmPDX  Portland-SAT San Antonio
6h 45m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
5:45 pm - 11:49 pmSAT  San Antonio-PDX Portland
8h 04m1 stop Dallas/Fort Worth
$377American Airlines
Tue, Dec 1 - Tue, Dec 8
American Airlines Logo
7:00 am - 4:05 pmPDX  Portland-SAT San Antonio
7h 05m1 stop Los Angeles
American Airlines Logo
5:00 am - 11:02 amSAT  San Antonio-PDX Portland
8h 02m1 stop Dallas/Fort Worth
$377American Airlines
Wed, Dec 2 - Wed, Dec 9

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Southwest flights from Portland to San Antonio

Our best Southwest deals on Portland to San Antonio flight tickets
Southwest
Dec 2
PDX6:55 amPortland
6h 40m
1 stop
SAT3:35 pmSan Antonio
Dec 9
SAT11:00 amSan Antonio
6h 00m
1 stop
PDX3:00 pmPortland
$372
Southwest
Dec 2
PDX10:15 amPortland
9h 15m
2 stops
SAT9:30 pmSan Antonio
Dec 9
SAT11:00 amSan Antonio
6h 00m
1 stop
PDX3:00 pmPortland
$378
Southwest
Dec 2
PDX10:15 amPortland
9h 15m
2 stops
SAT9:30 pmSan Antonio
Dec 5
SAT5:30 pmSan Antonio
5h 55m
1 stop
PDX9:25 pmPortland
$382

Alaska Airlines flights from Portland to San Antonio

Our best Alaska Airlines deals on Portland to San Antonio flight tickets
Alaska Airlines
Dec 9
PDX6:26 amPortland
7h 36m
1 stop
SAT4:02 pmSan Antonio
Dec 16
SAT5:00 pmSan Antonio
6h 52m
1 stop
PDX9:52 pmPortland
$392
Alaska Airlines
Nov 10
PDX6:08 amPortland
10h 13m
2 stops
SAT6:21 pmSan Antonio
Nov 14
SAT7:00 amSan Antonio
7h 29m
1 stop
PDX12:29 pmPortland
$592
Alaska Airlines
Nov 12
PDX12:04 pmPortland
9h 55m
2 stops
SAT11:59 pmSan Antonio
Nov 16
SAT7:00 amSan Antonio
11h 50m
2 stops
PDX4:50 pmPortland
$597

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

Tue 12/15

5:10 pm-6:01 pm

1 stop22h 51m

San Antonio

Tue 12/22

11:48 am-9:33 pm

1 stop11h 45m

$258

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 11/25

10:10 pm-3:18 pm

1 stop15h 08m

San Antonio

Mon 11/30

8:28 pm-4:07 pm

1 stop21h 39m

$265

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 1/14

4:29 pm-7:27 pm

1 stop24h 58m

San Antonio

Wed 1/20

5:08 pm-10:23 pm

1 stop7h 15m

$333

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 1/14

10:59 pm-11:01 am

1 stop10h 02m

San Antonio

Wed 1/20

8:22 pm-5:00 pm

2 stops22h 38m

$340

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 12/1

6:55 am-3:35 pm

1 stop6h 40m

San Antonio

Tue 12/8

11:00 am-3:00 pm

1 stop6h 00m

$372

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 12/2

6:55 am-3:35 pm

1 stop6h 40m

San Antonio

Wed 12/9

11:00 am-3:00 pm

1 stop6h 00m

$372

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 12/2

11:10 pm-9:48 am

1 stop8h 38m

San Antonio

Mon 12/7

7:01 am-12:00 pm

1 stop6h 59m

$377
Quickest round-trip

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 2/10

5:23 pm-12:48 am

1 stop5h 25m

San Antonio

Tue 2/16

7:25 am-12:32 pm

1 stop7h 07m

$377

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 12/1

2:24 pm-11:09 pm

1 stop6h 45m

San Antonio

Tue 12/8

5:45 pm-11:49 pm

1 stop8h 04m

$377

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 12/2

7:00 am-4:05 pm

1 stop7h 05m

San Antonio

Wed 12/9

5:00 am-11:02 am

1 stop8h 02m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 low for flights on this route.

Typical prices usually range from $374 to $568.
The lowest price recently found on this route was $258.

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 $395.

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 $435 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 $373 on momondo.

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

As of November 2026, prices for Portland to San Antonio flights are approximately 110% 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

$134

Fastest flight time

5h 50m

Direct flights

None
The best one-way flight to San Antonio from Portland in the past 72 hours is $134. The best round-trip flight deal from Portland to San Antonio found on momondo in the last 72 hours is $258.
The fastest flight from Portland to San Antonio takes 5h 50m
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 50m.

  • 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
2,512 reviews
Search Frontier flights
United AirlinesPriceFrom $242Free CancellationRating
7.3
10,461 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $248Free CancellationRating
7.9
13,138 reviews
Search Alaska Airlines flights
DeltaPriceFrom $284Free CancellationRating
7.8
8,698 reviews
Search Delta flights
SouthwestPriceFrom $302Free CancellationRating
8.0
4,215 reviews
Search Southwest flights
American AirlinesPriceFrom $305Free CancellationRating
7.0
12,234 reviews
Search American Airlines 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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