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Cheap flights from Portland to San Antonio from $125

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
12:39 pm - 2:20 pmPDX  Portland-SAT San Antonio
23h 41m1 stop Las Vegas Harry Reid Intl
Frontier Logo
3:19 pm - 11:26 amSAT  San Antonio-PDX Portland
22h 07m1 stop Las Vegas Harry Reid Intl
$239Frontier
Mon, Sep 28 - Wed, Oct 7
Frontier Logo
12:38 pm - 7:25 pmPDX  Portland-SAT San Antonio
28h 47m1 stop Denver Intl
Frontier Logo
3:19 pm - 11:26 amSAT  San Antonio-PDX Portland
22h 07m1 stop Las Vegas Harry Reid Intl
$248Frontier
Thu, Oct 1 - Wed, Oct 7
Multiple Airlines Logo
12:31 pm - 9:34 pmPDX  Portland-SAT San Antonio
7h 03m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
5:29 pm - 9:55 pmSAT  San Antonio-PDX Portland
6h 26m1 stop Seattle/Tacoma Intl
$304Multiple Airlines
Thu, Nov 5 - Thu, Nov 12
Multiple Airlines Logo
12:38 pm - 7:25 pmPDX  Portland-SAT San Antonio
28h 47m1 stop Denver Intl
Multiple Airlines Logo
5:29 pm - 10:01 pmSAT  San Antonio-PDX Portland
6h 32m1 stop Seattle/Tacoma Intl
$331Multiple Airlines
Fri, Sep 11 - Mon, Sep 21
Southwest Logo
6:55 am - 5:10 pmPDX  Portland-SAT San Antonio
8h 15m1 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
$332Southwest
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
5:15 am - 1:05 pmPDX  Portland-SAT San Antonio
5h 50m1 stop Denver Intl
United Airlines Logo
5:55 pm - 11:18 pmSAT  San Antonio-PDX Portland
7h 23m1 stop Houston George Bush Intcntl
$332United Airlines
Wed, Jan 13 - Wed, Jan 13
Southwest Logo
5:50 am - 2:50 pmPDX  Portland-SAT San Antonio
7h 00m1 stop Las Vegas Harry Reid Intl
Southwest Logo
6:20 am - 12:50 pmSAT  San Antonio-PDX Portland
8h 30m1 stop Phoenix Sky Harbor Intl
$337Southwest
Wed, Sep 23 - Sat, Sep 26
United Airlines Logo
7:00 am - 6:03 pmPDX  Portland-SAT San Antonio
9h 03m1 stop Houston George Bush Intcntl
United Airlines Logo
1:52 pm - 6:09 pmSAT  San Antonio-PDX Portland
6h 17m1 stop Denver Intl
$337United Airlines
Sat, Oct 31 - Mon, Nov 2
American Airlines Logo
5:10 am - 1:02 pmPDX  Portland-SAT San Antonio
5h 52m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
3:12 pm - 7:20 pmSAT  San Antonio-PDX Portland
6h 08m1 stop Dallas/Fort Worth
$337American Airlines
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
5:20 am - 1:15 pmPDX  Portland-SAT San Antonio
5h 55m1 stop Dallas/Fort Worth
American Airlines Logo
4:28 pm - 9:11 pmSAT  San Antonio-PDX Portland
6h 43m1 stop Dallas/Fort Worth
$337American Airlines
Tue, Oct 6 - 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 28
PDX12:39 pmPortland
23h 41m
1 stop
SAT2:20 pmSan Antonio
Oct 7
SAT3:19 pmSan Antonio
22h 07m
1 stop
PDX11:26 amPortland
$239
Frontier
Oct 1
PDX12:38 pmPortland
28h 47m
1 stop
SAT7:25 pmSan Antonio
Oct 7
SAT3:19 pmSan Antonio
22h 07m
1 stop
PDX11:26 amPortland
$248
Frontier
Oct 22
PDX11:49 amPortland
5h 37m
1 stop
SAT7:26 pmSan Antonio
Oct 26
SAT8:21 pmSan Antonio
16h 46m
1 stop
PDX11:07 amPortland
$252

Southwest flights from Portland to San Antonio

Our best Southwest deals on Portland to San Antonio flight tickets
Southwest
Nov 3
PDX6:55 amPortland
8h 15m
1 stop
SAT5:10 pmSan Antonio
Nov 10
SAT11:00 amSan Antonio
6h 00m
1 stop
PDX3:00 pmPortland
$332
Southwest
Oct 6
PDX5:30 amPortland
7h 50m
1 stop
SAT3:20 pmSan Antonio
Oct 12
SAT9:20 pmSan Antonio
6h 00m
1 stop
PDX1:20 amPortland
$337
Southwest
Oct 1
PDX3:30 pmPortland
5h 30m
1 stop
SAT11:00 pmSan Antonio
Oct 7
SAT6:30 pmSan Antonio
7h 05m
2 stops
PDX11:35 pmPortland
$342

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

Mon 9/28

12:39 pm-2:20 pm

1 stop23h 41m

San Antonio

Wed 10/7

3:19 pm-11:26 am

1 stop22h 07m

$239

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 10/1

12:38 pm-7:25 pm

1 stop28h 47m

San Antonio

Wed 10/7

3:19 pm-11:26 am

1 stop22h 07m

$248

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 11/5

12:31 pm-9:34 pm

1 stop7h 03m

San Antonio

Thu 11/12

5:29 pm-9:55 pm

1 stop6h 26m

$304

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Fri 9/11

12:38 pm-7:25 pm

1 stop28h 47m

San Antonio

Mon 9/21

5:29 pm-10:01 pm

1 stop6h 32m

$331

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 11/3

6:55 am-5:10 pm

1 stop8h 15m

San Antonio

Tue 11/10

11:00 am-3:00 pm

1 stop6h 00m

$332

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 1/13

5:15 am-1:05 pm

1 stop5h 50m

San Antonio

Wed 1/13

5:55 pm-11:18 pm

1 stop7h 23m

$332

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 9/23

5:50 am-2:50 pm

1 stop7h 00m

San Antonio

Sat 9/26

6:20 am-12:50 pm

1 stop8h 30m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 10/31

7:00 am-6:03 pm

1 stop9h 03m

San Antonio

Mon 11/2

1:52 pm-6:09 pm

1 stop6h 17m

$337
Quickest round-trip

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 9/17

5:10 am-1:02 pm

1 stop5h 52m

San Antonio

Mon 9/21

3:12 pm-7:20 pm

1 stop6h 08m

$337

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Tue 10/6

5:20 am-1:15 pm

1 stop5h 55m

San Antonio

Tue 10/20

4:28 pm-9:11 pm

1 stop6h 43m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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 $314 to $444.
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 September, then book flights to San Antonio from Portland during October instead. Flights to San Antonio in October, while not as cheap as those in September, still average around $369.

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 $422 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 $256 on momondo.

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

As of August 2026, prices for Portland to San Antonio flights are approximately 99% 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

$125

Fastest flight time

5h 20m

Direct flights

None
The best one-way flight to San Antonio from Portland in the past 72 hours is $125. 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 20m
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 20m.

  • 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
2,651 reviews
Search Frontier flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
10,116 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
7.9
12,840 reviews
Search Alaska Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.8
8,518 reviews
Search Delta flights
American AirlinesPriceFrom $292Free CancellationRating
7.1
11,985 reviews
Search American Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,209 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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