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Cheap flights from Portland to San Antonio from $141

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
11:49 am - 7:26 pmPDX  Portland-SAT San Antonio
5h 37m1 stop Denver Intl
Frontier Logo
8:21 pm - 10:54 amSAT  San Antonio-PDX Portland
16h 33m1 stop Denver Intl
$250Frontier
Tue, Oct 20 - Sat, Oct 24
Frontier Logo
5:09 pm - 7:56 pmPDX  Portland-SAT San Antonio
24h 47m1 stop Denver Intl
Frontier Logo
6:47 pm - 4:10 pmSAT  San Antonio-PDX Portland
23h 23m1 stop Denver Intl
$273Frontier
Thu, Dec 3 - Sat, Dec 12
Alaska Airlines Logo
6:26 am - 4:02 pmPDX  Portland-SAT San Antonio
7h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:00 pm - 9:52 pmSAT  San Antonio-PDX Portland
6h 52m1 stop Seattle/Tacoma Intl
$294Alaska Airlines
Wed, Dec 9 - Mon, Dec 14
Alaska Airlines Logo
6:26 am - 4:02 pmPDX  Portland-SAT San Antonio
7h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:40 pm - 10:28 pmSAT  San Antonio-PDX Portland
7h 48m1 stop Los Angeles Los Angeles
$325Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Delta Logo
1:00 pm - 11:18 pmPDX  Portland-SAT San Antonio
8h 18m1 stop Los Angeles Los Angeles
Delta Logo
4:10 pm - 10:26 pmSAT  San Antonio-PDX Portland
8h 16m1 stop Los Angeles Los Angeles
$351Delta
Fri, Jan 15 - Fri, Jan 22
Southwest Logo
4:20 pm - 1:25 amPDX  Portland-SAT San Antonio
7h 05m1 stop Phoenix Sky Harbor Intl
Southwest Logo
6:15 am - 11:35 amSAT  San Antonio-PDX Portland
7h 20m1 stop Las Vegas Harry Reid Intl
$362Southwest
Mon, Oct 19 - Wed, Oct 21
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
$369Multiple Airlines
Thu, Nov 5 - Sat, Nov 14
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 - 11:00 pmSAT  San Antonio-PDX Portland
7h 31m1 stop Seattle/Tacoma Intl
$369Multiple Airlines
Thu, Nov 5 - Fri, Nov 13
Southwest Logo
11:25 am - 7:20 pmPDX  Portland-SAT San Antonio
5h 55m1 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, Nov 4 - Wed, Nov 11
Delta Logo
11:12 pm - 10:41 amPDX  Portland-SAT San Antonio
9h 29m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:00 pm - 11:47 pmSAT  San Antonio-PDX Portland
7h 47m1 stop Salt Lake City
$377Delta
Mon, Oct 19 - Mon, Oct 26

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Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets
Frontier
Oct 20
PDX11:49 amPortland
5h 37m
1 stop
SAT7:26 pmSan Antonio
Oct 24
SAT8:21 pmSan Antonio
16h 33m
1 stop
PDX10:54 amPortland
$250
Frontier
Dec 3
PDX5:09 pmPortland
24h 47m
1 stop
SAT7:56 pmSan Antonio
Dec 12
SAT6:47 pmSan Antonio
23h 23m
1 stop
PDX4:10 pmPortland
$273
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
$295

Southwest flights from Portland to San Antonio

Our best Southwest deals on Portland to San Antonio flight tickets
Southwest
Dec 5
PDX10:20 amPortland
7h 25m
2 stops
SAT7:45 pmSan Antonio
Dec 9
SAT6:45 amSan Antonio
8h 25m
2 stops
PDX1:10 pmPortland
$286
Southwest
Oct 19
PDX4:20 pmPortland
7h 05m
1 stop
SAT1:25 amSan Antonio
Oct 21
SAT6:15 amSan Antonio
7h 20m
1 stop
PDX11:35 amPortland
$362
Southwest
Nov 4
PDX11:25 amPortland
5h 55m
1 stop
SAT7:20 pmSan Antonio
Nov 11
SAT11:00 amSan Antonio
6h 00m
1 stop
PDX3:00 pmPortland
$372

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 10/20

11:49 am-7:26 pm

1 stop5h 37m

San Antonio

Sat 10/24

8:21 pm-10:54 am

1 stop16h 33m

$250

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 12/3

5:09 pm-7:56 pm

1 stop24h 47m

San Antonio

Sat 12/12

6:47 pm-4:10 pm

1 stop23h 23m

$273

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 12/9

6:26 am-4:02 pm

1 stop7h 36m

San Antonio

Mon 12/14

5:00 pm-9:52 pm

1 stop6h 52m

$294

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Sat 12/5

6:26 am-4:02 pm

1 stop7h 36m

San Antonio

Wed 12/9

4:40 pm-10:28 pm

1 stop7h 48m

$325

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Fri 1/15

1:00 pm-11:18 pm

1 stop8h 18m

San Antonio

Fri 1/22

4:10 pm-10:26 pm

1 stop8h 16m

$351

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Mon 10/19

4:20 pm-1:25 am

1 stop7h 05m

San Antonio

Wed 10/21

6:15 am-11:35 am

1 stop7h 20m

$362

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 11/5

12:31 pm-9:34 pm

1 stop7h 03m

San Antonio

Sat 11/14

5:29 pm-9:55 pm

1 stop6h 26m

$369

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Thu 11/5

12:31 pm-9:34 pm

1 stop7h 03m

San Antonio

Fri 11/13

5:29 pm-11:00 pm

1 stop7h 31m

$369
Quickest round-trip

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Wed 11/4

11:25 am-7:20 pm

1 stop5h 55m

San Antonio

Wed 11/11

11:00 am-3:00 pm

1 stop6h 00m

$372

PortlandSan Antonio

PDX Portland - SAT San Antonio

PDXSAT

Portland

Mon 10/19

11:12 pm-10:41 am

1 stop9h 29m

San Antonio

Mon 10/26

6:00 pm-11:47 pm

1 stop7h 47m

$377

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 $372 to $480.
The lowest price recently found on this route was $250.

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 $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 $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 $384 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 86% 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

$141

Fastest flight time

5h 15m

Direct flights

None
The best one-way flight to San Antonio from Portland in the past 72 hours is $141. The best round-trip flight deal from Portland to San Antonio found on momondo in the last 72 hours is $250.
The fastest flight from Portland to San Antonio takes 5h 15m
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 15m.

  • 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
2,581 reviews
Search Frontier flights
United AirlinesPriceFrom $237Free CancellationRating
7.4
10,230 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
7.9
12,956 reviews
Search Alaska Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.8
8,595 reviews
Search Delta flights
American AirlinesPriceFrom $305Free CancellationRating
7.0
12,080 reviews
Search American Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,196 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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