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Cheap flights from Portland to San Antonio from $119

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
12:38 pm - 7:25 pmPDX  Portland-SAT San Antonio
28h 47m1 stop Denver Intl
Frontier Logo
3:19 pm - 11:36 amSAT  San Antonio-PDX Portland
22h 17m1 stop Las Vegas Harry Reid Intl
$239Frontier
Thu, Sep 24 - Wed, Sep 30
Frontier Logo
11:49 am - 7:26 pmPDX  Portland-SAT San Antonio
5h 37m1 stop Denver Intl
Frontier Logo
8:21 pm - 11:07 amSAT  San Antonio-PDX Portland
16h 46m1 stop Denver Intl
$248Frontier
Thu, Oct 22 - Mon, Oct 26
Multiple Airlines Logo
11:49 am - 7:26 pmPDX  Portland-SAT San Antonio
5h 37m1 stop Denver Intl
Multiple Airlines Logo
5:26 pm - 11:02 pmSAT  San Antonio-PDX Portland
7h 36m1 stop Seattle/Tacoma Intl
$288Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
12:57 pm - 9:31 pmPDX  Portland-SAT San Antonio
6h 34m1 stop Houston George Bush Intcntl
United Airlines Logo
5:30 am - 9:28 amSAT  San Antonio-PDX Portland
5h 58m1 stop Denver Intl
$332United Airlines
Tue, Oct 6 - Wed, Oct 7
Southwest Logo
2:05 pm - 9:45 pmPDX  Portland-SAT San Antonio
5h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
12:05 pm - 7:00 pmSAT  San Antonio-PDX Portland
8h 55m1 stop Denver Intl
$337Southwest
Wed, Feb 10 - Tue, Feb 16
Southwest Logo
10:45 pm - 11:00 amPDX  Portland-SAT San Antonio
10h 15m1 stop Baltimore/Washington
Southwest Logo
5:50 am - 9:55 amSAT  San Antonio-PDX Portland
6h 05m1 stop Dallas Love Field
$337Southwest
Wed, Sep 30 - Wed, Oct 7
United Airlines Logo
1:03 pm - 9:59 pmPDX  Portland-SAT San Antonio
6h 56m1 stop San Francisco
United Airlines Logo
5:58 pm - 10:21 pmSAT  San Antonio-PDX Portland
6h 23m1 stop Houston George Bush Intcntl
$337United Airlines
Thu, Oct 1 - Sat, Oct 3
American Airlines Logo
7:00 am - 5:48 pmPDX  Portland-SAT San Antonio
8h 48m1 stop Dallas/Fort Worth
American Airlines Logo
5:43 pm - 11:39 pmSAT  San Antonio-PDX Portland
7h 56m1 stop Dallas/Fort Worth
$337American Airlines
Sat, Sep 26 - Sat, Oct 10
American Airlines Logo
2:25 pm - 11:59 pmPDX  Portland-SAT San Antonio
7h 34m1 stop Dallas/Fort Worth
American Airlines Logo
3:00 pm - 9:11 pmSAT  San Antonio-PDX Portland
8h 11m1 stop Dallas/Fort Worth
$337American Airlines
Wed, Oct 7 - Sat, Oct 10
Multiple Airlines Logo
11:49 am - 7:26 pmPDX  Portland-SAT San Antonio
5h 37m1 stop Denver Intl
Multiple Airlines Logo
10:36 am - 8:40 pmSAT  San Antonio-PDX Portland
12h 04m2 stops Dallas/Fort Worth San Diego
$343Multiple Airlines
Tue, Oct 13 - Tue, Oct 20

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Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets
Frontier
Sep 24
PDX12:38 pmPortland
28h 47m
1 stop
SAT7:25 pmSan Antonio
Sep 30
SAT3:19 pmSan Antonio
22h 17m
1 stop
PDX11:36 amPortland
$239
Frontier
Oct 13
PDX11:49 amPortland
5h 37m
1 stop
SAT7:26 pmSan Antonio
Oct 17
SAT8:21 pmSan Antonio
16h 33m
1 stop
PDX10:54 amPortland
$248
Frontier
Oct 22
PDX12:11 pmPortland
7h 38m
1 stop
SAT9:49 pmSan Antonio
Oct 24
SAT8:21 pmSan Antonio
16h 33m
1 stop
PDX10:54 amPortland
$250

American Airlines flights from Portland to San Antonio

Our best American Airlines deals on Portland to San Antonio flight tickets
American Airlines
Sep 26
PDX7:00 amPortland
8h 48m
1 stop
SAT5:48 pmSan Antonio
Oct 10
SAT5:43 pmSan Antonio
7h 56m
1 stop
PDX11:39 pmPortland
$337
American Airlines
Oct 22
PDX3:00 pmPortland
5h 59m
1 stop
SAT10:59 pmSan Antonio
Oct 24
SAT4:28 pmSan Antonio
6h 43m
1 stop
PDX9:11 pmPortland
$352
American Airlines
Feb 10
PDX1:33 pmPortland
8h 26m
1 stop
SAT11:59 pmSan Antonio
Feb 16
SAT12:45 pmSan Antonio
8h 57m
1 stop
PDX7:42 pmPortland
$356

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 9/24

12:38 pm-7:25 pm

1 stop28h 47m

San Antonio

Wed 9/30

3:19 pm-11:36 am

1 stop22h 17m

$239

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 10/22

11:49 am-7:26 pm

1 stop5h 37m

San Antonio

Mon 10/26

8:21 pm-11:07 am

1 stop16h 46m

$248

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 10/13

11:49 am-7:26 pm

1 stop5h 37m

San Antonio

Tue 10/20

5:26 pm-11:02 pm

1 stop7h 36m

$288
Quickest round-trip

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 10/6

12:57 pm-9:31 pm

1 stop6h 34m

San Antonio

Wed 10/7

5:30 am-9:28 am

1 stop5h 58m

$332

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 2/10

2:05 pm-9:45 pm

1 stop5h 40m

San Antonio

Tue 2/16

12:05 pm-7:00 pm

1 stop8h 55m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 9/30

10:45 pm-11:00 am

1 stop10h 15m

San Antonio

Wed 10/7

5:50 am-9:55 am

1 stop6h 05m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 10/1

1:03 pm-9:59 pm

1 stop6h 56m

San Antonio

Sat 10/3

5:58 pm-10:21 pm

1 stop6h 23m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 9/26

7:00 am-5:48 pm

1 stop8h 48m

San Antonio

Sat 10/10

5:43 pm-11:39 pm

1 stop7h 56m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 10/7

2:25 pm-11:59 pm

1 stop7h 34m

San Antonio

Sat 10/10

3:00 pm-9:11 pm

1 stop8h 11m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 10/13

11:49 am-7:26 pm

1 stop5h 37m

San Antonio

Tue 10/20

10:36 am-8:40 pm

2 stops12h 04m

$343

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 low for flights on this route.

Typical prices usually range from $346 to $429.
The lowest price recently found on this route was $239.

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 October instead. Flights to San Antonio in October, while not as cheap as those in February, still average around $382.

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 $427 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 $326 on momondo.

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

As of September 2026, prices for Portland to San Antonio flights are approximately 15% 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

$119

Fastest flight time

5h 30m

Direct flights

None
The best one-way flight to San Antonio from Portland in the past 72 hours is $119. The best round-trip flight deal from Portland to San Antonio found on momondo in the last 72 hours is $239.
The fastest flight from Portland to San Antonio takes 5h 30m
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 30m.

  • 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
5.6
2,618 reviews
Search Frontier flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
10,172 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
7.9
12,882 reviews
Search Alaska Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.8
8,558 reviews
Search Delta flights
American AirlinesPriceFrom $305Free CancellationRating
7.1
12,041 reviews
Search American Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,202 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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