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Cheap flights from Portland to San Antonio from $166

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 7/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Delta Logo
9:45 am - 5:14 pm
PDX
-
SAT
5h 29m
1 stop
Delta Logo
12:39 pm - 4:03 pm
SAT
-
PDX
5h 24m
1 stop
$296Delta
Wed, Aug 19 - Sat, Aug 22
United Airlines Logo
6:56 am - 3:48 pm
PDX
-
SAT
6h 52m
1 stop
United Airlines Logo
2:15 pm - 7:18 pm
SAT
-
PDX
7h 03m
1 stop
$312United Airlines
Tue, Sep 29 - Tue, Oct 6
Alaska Airlines Logo
6:19 am - 3:46 pm
PDX
-
SAT
7h 27m
1 stop
Alaska Airlines Logo
4:44 pm - 11:59 pm
SAT
-
PDX
9h 15m
1 stop
$323Alaska Airlines
Fri, Aug 14 - Tue, Aug 18
Frontier Logo
5:21 pm - 6:44 pm
PDX
-
SAT
23h 23m
1 stop
Frontier Logo
7:39 pm - 4:51 pm
SAT
-
PDX
23h 12m
1 stop
$327Frontier
Wed, Jul 15 - Sat, Jul 18
Frontier Logo
12:20 pm - 6:44 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
7:39 pm - 4:36 pm
SAT
-
PDX
22h 57m
1 stop
$333Frontier
Fri, Jul 24 - Tue, Jul 28
Multiple Airlines Logo
6:20 am - 4:19 pm
PDX
-
SAT
7h 59m
1 stop
Multiple Airlines Logo
11:08 am - 4:35 pm
SAT
-
PDX
7h 27m
1 stop
$338Multiple Airlines
Wed, Sep 30 - Mon, Oct 5
Frontier Logo
5:21 pm - 6:44 pm
PDX
-
SAT
23h 23m
1 stop
Frontier Logo
7:39 pm - 4:31 pm
SAT
-
PDX
22h 52m
1 stop
$339Frontier
Wed, Jul 8 - Mon, Jul 13
Frontier Logo
8:42 pm - 8:11 pm
PDX
-
SAT
21h 29m
1 stop
Frontier Logo
7:51 pm - 4:35 pm
SAT
-
PDX
22h 44m
1 stop
$340Frontier
Fri, Jun 19 - Tue, Jun 23
Delta Logo
5:08 pm - 12:26 am
PDX
-
SAT
5h 18m
1 stop
Delta Logo
2:22 pm - 8:17 pm
SAT
-
PDX
7h 55m
1 stop
$342Delta
Mon, Aug 10 - Wed, Aug 19
Southwest Logo
2:00 pm - 9:30 pm
PDX
-
SAT
5h 30m
1 stop
Southwest Logo
3:25 pm - 10:00 pm
SAT
-
PDX
8h 35m
2 stops
$346Southwest
Wed, Sep 30 - Sat, Oct 3

Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets
Delta
Aug 19
PDX9:45 amPortland
5h 29m
1 stop
SAT5:14 pmSan Antonio
Aug 22
SAT12:39 pmSan Antonio
5h 24m
1 stop
PDX4:03 pmPortland
$296
Delta
Aug 10
PDX5:08 pmPortland
5h 18m
1 stop
SAT12:26 amSan Antonio
Aug 19
SAT2:22 pmSan Antonio
7h 55m
1 stop
PDX8:17 pmPortland
$342
Delta
Aug 19
PDX2:08 pmPortland
8h 20m
1 stop
SAT12:28 amSan Antonio
Aug 22
SAT7:30 amSan Antonio
11h 44m
2 stops
PDX5:14 pmPortland
$347

Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets
Frontier
Jul 15
PDX5:21 pmPortland
23h 23m
1 stop
SAT6:44 pmSan Antonio
Jul 18
SAT7:39 pmSan Antonio
23h 12m
1 stop
PDX4:51 pmPortland
$327
Frontier
Jul 24
PDX12:20 pmPortland
28h 24m
1 stop
SAT6:44 pmSan Antonio
Jul 28
SAT7:39 pmSan Antonio
22h 57m
1 stop
PDX4:36 pmPortland
$333
Frontier
Jul 8
PDX5:21 pmPortland
23h 23m
1 stop
SAT6:44 pmSan Antonio
Jul 13
SAT7:39 pmSan Antonio
22h 52m
1 stop
PDX4:31 pmPortland
$339

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 June 1, 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

Cheapest round-trip
Quickest round-trip

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 8/19

9:45 am-5:14 pm

1 stop5h 29m

San Antonio

Sat 8/22

12:39 pm-4:03 pm

1 stop5h 24m

$296

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Tue 9/29

6:56 am-3:48 pm

1 stop6h 52m

San Antonio

Tue 10/6

2:15 pm-7:18 pm

1 stop7h 03m

$312

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 8/14

6:19 am-3:46 pm

1 stop7h 27m

San Antonio

Tue 8/18

4:44 pm-11:59 pm

1 stop9h 15m

$323

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 7/15

5:21 pm-6:44 pm

1 stop23h 23m

San Antonio

Sat 7/18

7:39 pm-4:51 pm

1 stop23h 12m

$327

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 7/24

12:20 pm-6:44 pm

1 stop28h 24m

San Antonio

Tue 7/28

7:39 pm-4:36 pm

1 stop22h 57m

$333

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 9/30

6:20 am-4:19 pm

1 stop7h 59m

San Antonio

Mon 10/5

11:08 am-4:35 pm

1 stop7h 27m

$338

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 7/8

5:21 pm-6:44 pm

1 stop23h 23m

San Antonio

Mon 7/13

7:39 pm-4:31 pm

1 stop22h 52m

$339

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 6/19

8:42 pm-8:11 pm

1 stop21h 29m

San Antonio

Tue 6/23

7:51 pm-4:35 pm

1 stop22h 44m

$340

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 8/10

5:08 pm-12:26 am

1 stop5h 18m

San Antonio

Wed 8/19

2:22 pm-8:17 pm

1 stop7h 55m

$342

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 9/30

2:00 pm-9:30 pm

1 stop5h 30m

San Antonio

Sat 10/3

3:25 pm-10:00 pm

2 stops8h 35m

$346

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 typical price of a round-trip flight between Portland and San Antonio?

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 August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $308.

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 $403 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 $252 on momondo.

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

As of June 2026, prices for Portland to San Antonio flights are approximately 31% cheaper 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 16m

Direct flights

None
The fastest flight from Portland to San Antonio takes 5h 16m
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 16m.

  • 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
2,923 reviews
Search Frontier flights
American AirlinesPriceFrom $188Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,768 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $248Free CancellationRating
7.9
12,442 reviews
Search Alaska Airlines flights
DeltaPriceFrom $270Free CancellationRating
7.9
8,402 reviews
Search Delta flights
SouthwestPriceFrom $300Free CancellationRating
8.0
4,256 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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