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Cheap flights from Portland to San Antonio from $66

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 4/21. 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.
Frontier Logo
1:48 pm - 2:19 pm
PDX
-
SAT
22h 31m
1 stop
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$201Frontier
Tue, Apr 14 - Mon, Apr 20
Frontier Logo
12:27 pm - 2:19 pm
PDX
-
SAT
23h 52m
1 stop
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$211Frontier
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
1:48 pm - 2:19 pm
PDX
-
SAT
22h 31m
1 stop
Frontier Logo
3:34 pm - 11:03 am
SAT
-
PDX
21h 29m
1 stop
$222Frontier
Wed, Apr 22 - Sat, Apr 25
Frontier Logo
12:04 pm - 12:17 am
PDX
-
SAT
10h 13m
1 stop
Frontier Logo
6:45 am - 11:09 am
SAT
-
PDX
6h 24m
1 stop
$228Frontier
Mon, Mar 9 - Thu, Mar 12
Frontier Logo
5:19 pm - 12:19 am
PDX
-
SAT
29h 00m
2 stops
Frontier Logo
4:04 pm - 1:02 pm
SAT
-
PDX
22h 58m
1 stop
$235Frontier
Thu, Apr 9 - Tue, Apr 14
Frontier Logo
11:48 am - 5:59 pm
PDX
-
SAT
28h 11m
2 stops
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$236Frontier
Fri, Apr 24 - Tue, May 5
Frontier Logo
11:48 am - 2:39 pm
PDX
-
SAT
24h 51m
1 stop
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$245Frontier
Fri, Apr 24 - Tue, Apr 28
Frontier Logo
12:04 pm - 9:06 am
PDX
-
SAT
19h 02m
1 stop
Frontier Logo
6:45 am - 11:09 am
SAT
-
PDX
6h 24m
1 stop
$250Frontier
Sun, Mar 15 - Sun, Mar 22
Frontier Logo
12:27 pm - 2:19 pm
PDX
-
SAT
23h 52m
1 stop
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$251Frontier
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
12:52 pm - 2:19 pm
PDX
-
SAT
23h 27m
2 stops
Frontier Logo
3:14 pm - 1:02 pm
SAT
-
PDX
23h 48m
1 stop
$255Frontier
Mon, Apr 27 - Mon, May 4

Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets
Delta
Apr 4
PDX10:30 pmPortland
9h 25m
1 stop
SAT9:55 amSan Antonio
Apr 18
SAT6:39 amSan Antonio
8h 10m
1 stop
PDX12:49 pmPortland
$277
Delta
Mar 18
PDX5:02 pmPortland
5h 14m
1 stop
SAT12:16 amSan Antonio
Mar 24
SAT7:35 amSan Antonio
6h 39m
1 stop
PDX12:14 pmPortland
$318
Delta
Apr 4
PDX10:30 pmPortland
9h 25m
1 stop
SAT9:55 amSan Antonio
Apr 11
SAT7:35 amSan Antonio
6h 39m
1 stop
PDX12:14 pmPortland
$328

Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets
Frontier
Apr 14
PDX1:48 pmPortland
22h 31m
1 stop
SAT2:19 pmSan Antonio
Apr 20
SAT3:14 pmSan Antonio
23h 48m
1 stop
PDX1:02 pmPortland
$201
Frontier
Apr 25
PDX12:27 pmPortland
23h 52m
1 stop
SAT2:19 pmSan Antonio
Apr 28
SAT3:14 pmSan Antonio
23h 48m
1 stop
PDX1:02 pmPortland
$211
Frontier
Apr 22
PDX1:48 pmPortland
22h 31m
1 stop
SAT2:19 pmSan Antonio
Apr 25
SAT3:34 pmSan Antonio
21h 29m
1 stop
PDX11:03 amPortland
$222

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 February 19, 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

Tue 4/14

1:48 pm-2:19 pm

1 stop22h 31m

San Antonio

Mon 4/20

3:14 pm-1:02 pm

1 stop23h 48m

$201

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sat 4/25

12:27 pm-2:19 pm

1 stop23h 52m

San Antonio

Tue 4/28

3:14 pm-1:02 pm

1 stop23h 48m

$211

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 4/22

1:48 pm-2:19 pm

1 stop22h 31m

San Antonio

Sat 4/25

3:34 pm-11:03 am

1 stop21h 29m

$222

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 3/9

12:04 pm-12:17 am

1 stop10h 13m

San Antonio

Thu 3/12

6:45 am-11:09 am

1 stop6h 24m

$228

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 4/9

5:19 pm-12:19 am

2 stops29h 00m

San Antonio

Tue 4/14

4:04 pm-1:02 pm

1 stop22h 58m

$235

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 4/24

11:48 am-5:59 pm

2 stops28h 11m

San Antonio

Tue 5/5

3:14 pm-1:02 pm

1 stop23h 48m

$236

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 4/24

11:48 am-2:39 pm

1 stop24h 51m

San Antonio

Tue 4/28

3:14 pm-1:02 pm

1 stop23h 48m

$245

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sun 3/15

12:04 pm-9:06 am

1 stop19h 02m

San Antonio

Sun 3/22

6:45 am-11:09 am

1 stop6h 24m

$250

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sat 4/25

12:27 pm-2:19 pm

1 stop23h 52m

San Antonio

Tue 4/28

3:14 pm-1:02 pm

1 stop23h 48m

$251

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 4/27

12:52 pm-2:19 pm

2 stops23h 27m

San Antonio

Mon 5/4

3:14 pm-1:02 pm

1 stop23h 48m

$255

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 $389 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 $290 on momondo.

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

As of February 2026, prices for Portland to San Antonio flights are approximately 128% 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 38m

Direct flights

None
The fastest flight from Portland to San Antonio takes 5h 38m
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 38m.

  • 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
3,048 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,473 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $211Free CancellationRating
7.2
11,313 reviews
Search American Airlines flights
United AirlinesPriceFrom $237Free CancellationRating
7.4
9,322 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $248Free CancellationRating
8.0
11,904 reviews
Search Alaska Airlines flights
DeltaPriceFrom $270Free CancellationRating
7.9
8,213 reviews
Search Delta flights
SouthwestPriceFrom $286Free CancellationRating
8.0
4,295 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
Pleasanton
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.

An easier way to manage your San Antonio trip

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