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Cheap flights from Portland to San Antonio from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to San Antonio departing on 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:14 pm - 5:00 am
PDX
-
SAT
7h 46m
1 stop
United Airlines Logo
4:45 pm - 9:14 pm
SAT
-
PDX
6h 29m
1 stop
$237United Airlines
mié., abr. 22 - sáb., abr. 25
Frontier Logo
12:04 pm - 9:06 am
PDX
-
SAT
19h 02m
1 stop
Frontier Logo
10:05 am - 11:09 am
SAT
-
PDX
27h 04m
1 stop
$239Frontier
jue., mar. 12 - dom., mar. 15
United Airlines Logo
12:57 pm - 9:15 pm
PDX
-
SAT
6h 18m
1 stop
United Airlines Logo
5:47 am - 12:33 pm
SAT
-
PDX
8h 46m
2 stops
$242United Airlines
mar., mar. 3 - mar., mar. 10
Multiple Airlines Logo
6:58 pm - 8:35 am
PDX
-
SAT
11h 37m
1 stop
Multiple Airlines Logo
6:12 pm - 6:06 pm
SAT
-
PDX
25h 54m
2 stops
$267Multiple Airlines
dom., feb. 22 - mié., feb. 25
United Airlines Logo
7:57 pm - 8:43 am
PDX
-
SAT
10h 46m
2 stops
United Airlines Logo
9:10 am - 1:44 pm
SAT
-
PDX
6h 34m
1 stop
$270United Airlines
mar., feb. 17 - mar., feb. 24
United Airlines Logo
7:57 pm - 8:43 am
PDX
-
SAT
10h 46m
2 stops
United Airlines Logo
1:18 pm - 5:51 pm
SAT
-
PDX
6h 33m
1 stop
$271United Airlines
mar., feb. 17 - mar., feb. 24
United Airlines Logo
7:00 am - 3:46 pm
PDX
-
SAT
6h 46m
1 stop
United Airlines Logo
1:25 pm - 8:48 pm
SAT
-
PDX
9h 23m
2 stops
$272United Airlines
mié., abr. 22 - sáb., abr. 25
Delta Logo
1:02 pm - 11:43 pm
PDX
-
SAT
8h 41m
1 stop
Delta Logo
5:59 pm - 11:53 pm
SAT
-
PDX
7h 54m
1 stop
$287Delta
jue., feb. 12 - mar., feb. 17
Delta Logo
6:00 am - 1:38 pm
PDX
-
SAT
5h 38m
1 stop
Delta Logo
7:35 am - 5:03 pm
SAT
-
PDX
11h 28m
2 stops
$290Delta
mié., abr. 22 - sáb., abr. 25
Multiple Airlines Logo
6:58 pm - 8:35 am
PDX
-
SAT
11h 37m
1 stop
Multiple Airlines Logo
4:32 pm - 6:43 pm
SAT
-
PDX
28h 11m
1 stop
$291Multiple Airlines
dom., feb. 22 - jue., feb. 26

United Airlines flights from Portland to San Antonio

Our best United Airlines deals on Portland to San Antonio flight tickets
United Airlines
Apr 22
PDX7:14 pmPortland
7h 46m
1 stop
SAT5:00 amSan Antonio
Apr 25
SAT4:45 pmSan Antonio
6h 29m
1 stop
PDX9:14 pmPortland
$237
United Airlines
Feb 17
PDX7:57 pmPortland
10h 46m
2 stops
SAT8:43 amSan Antonio
Feb 24
SAT9:10 amSan Antonio
6h 34m
1 stop
PDX1:44 pmPortland
$270
United Airlines
Feb 17
PDX7:57 pmPortland
10h 46m
2 stops
SAT8:43 amSan Antonio
Feb 24
SAT1:18 pmSan Antonio
6h 33m
1 stop
PDX5:51 pmPortland
$271

Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets
Frontier
Mar 12
PDX12:04 pmPortland
19h 02m
1 stop
SAT9:06 amSan Antonio
Mar 15
SAT10:05 amSan Antonio
27h 04m
1 stop
PDX11:09 amPortland
$239
Frontier
Mar 29
PDX12:52 pmPortland
19h 48m
1 stop
SAT10:40 amSan Antonio
Apr 12
SAT11:38 amSan Antonio
25h 25m
2 stops
PDX11:03 amPortland
$383
Frontier
Mar 26
PDX12:04 pmPortland
10h 13m
1 stop
SAT12:17 amSan Antonio
Mar 30
SAT6:45 amSan Antonio
6h 24m
1 stop
PDX11:09 amPortland
$389

momondo Fare Finder

 
Customize your flight search to find flights from Portland to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated enero 20, 2026.
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

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mié. 4/22

7:14 pm-5:00 am

1 stop7h 46m

San Antonio

sáb. 4/25

4:45 pm-9:14 pm

1 stop6h 29m

$237

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

jue. 3/12

12:04 pm-9:06 am

1 stop19h 02m

San Antonio

dom. 3/15

10:05 am-11:09 am

1 stop27h 04m

$239

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mar. 3/3

12:57 pm-9:15 pm

1 stop6h 18m

San Antonio

mar. 3/10

5:47 am-12:33 pm

2 stops8h 46m

$242

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 2/22

6:58 pm-8:35 am

1 stop11h 37m

San Antonio

mié. 2/25

6:12 pm-6:06 pm

2 stops25h 54m

$267

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mar. 2/17

7:57 pm-8:43 am

2 stops10h 46m

San Antonio

mar. 2/24

9:10 am-1:44 pm

1 stop6h 34m

$270

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mar. 2/17

7:57 pm-8:43 am

2 stops10h 46m

San Antonio

mar. 2/24

1:18 pm-5:51 pm

1 stop6h 33m

$271

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mié. 4/22

7:00 am-3:46 pm

1 stop6h 46m

San Antonio

sáb. 4/25

1:25 pm-8:48 pm

2 stops9h 23m

$272

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

jue. 2/12

1:02 pm-11:43 pm

1 stop8h 41m

San Antonio

mar. 2/17

5:59 pm-11:53 pm

1 stop7h 54m

$287

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mié. 4/22

6:00 am-1:38 pm

1 stop5h 38m

San Antonio

sáb. 4/25

7:35 am-5:03 pm

2 stops11h 28m

$290

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 2/22

6:58 pm-8:35 am

1 stop11h 37m

San Antonio

jue. 2/26

4:32 pm-6:43 pm

1 stop28h 11m

$291

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 cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Portland during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $314.

How far in advance should I book a flight 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 $391 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 $333 on momondo.

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

As of January 2026, prices for Portland to San Antonio flights are approximately 124% 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

Fastest flight time

5h 14m

Direct flights

None
The fastest flight from Portland to San Antonio takes 5h 14m
There are no direct flights from Portland to San Antonio. There are no popular flight routes from Portland to San Antonio.
Search flight deals

  • 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 14m.

  • 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
5.7
3,056 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,350 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $211Free CancellationRating
7.2
11,164 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
8.0
11,760 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,180 reviews
Search United Airlines flights
DeltaPriceFrom $270Free CancellationRating
7.9
8,078 reviews
Search Delta flights
SouthwestPriceFrom $286Free CancellationRating
8.0
4,267 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
Boerne
Schertz
Pleasanton

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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