Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland to San Antonio from $73

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 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:47 pm - 11:21 am
PDX
-
SAT
20h 34m1 stop
Frontier Logo
11:55 am - 9:34 am
SAT
-
PDX
23h 39m1 stop
$195Frontier
dom., ene. 4 - jue., ene. 8
Frontier Logo
11:09 am - 12:25 pm
PDX
-
SAT
23h 16m1 stop
Frontier Logo
1:15 pm - 11:18 am
SAT
-
PDX
24h 03m1 stop
$203Frontier
dom., ene. 25 - dom., feb. 1
Frontier Logo
1:02 pm - 11:00 am
PDX
-
SAT
19h 58m2 stops
Frontier Logo
10:15 am - 11:04 am
SAT
-
PDX
26h 49m1 stop
$214Frontier
dom., ene. 11 - jue., ene. 15
Frontier Logo
12:47 pm - 12:17 am
PDX
-
SAT
9h 30m1 stop
Frontier Logo
3:55 pm - 11:15 am
SAT
-
PDX
21h 20m1 stop
$220Frontier
jue., dic. 25 - mié., ene. 7
Frontier Logo
11:59 am - 10:22 am
PDX
-
SAT
20h 23m1 stop
Frontier Logo
5:02 pm - 5:24 pm
SAT
-
PDX
26h 22m2 stops
$236Frontier
jue., ene. 15 - dom., ene. 18
Frontier Logo
12:04 pm - 12:17 am
PDX
-
SAT
10h 13m1 stop
Frontier Logo
6:45 am - 11:09 am
SAT
-
PDX
6h 24m1 stop
$238Frontier
dom., mar. 8 - lun., mar. 9
Frontier Logo
11:09 am - 7:33 pm
PDX
-
SAT
30h 24m2 stops
Frontier Logo
1:15 pm - 11:18 am
SAT
-
PDX
24h 03m1 stop
$248Frontier
dom., ene. 25 - dom., feb. 1
Frontier Logo
3:59 pm - 9:23 am
PDX
-
SAT
15h 24m1 stop
Frontier Logo
3:55 pm - 11:15 am
SAT
-
PDX
21h 20m1 stop
$261Frontier
mié., dic. 24 - mié., ene. 7
Frontier Logo
12:47 pm - 11:21 am
PDX
-
SAT
20h 34m1 stop
Frontier Logo
5:03 pm - 5:39 pm
SAT
-
PDX
26h 36m2 stops
$268Frontier
dom., ene. 4 - jue., ene. 8
Southwest Logo
6:10 am - 4:30 pm
PDX
-
SAT
8h 20m1 stop
Southwest Logo
10:15 am - 3:35 pm
SAT
-
PDX
7h 20m1 stop
$284Southwest
sáb., ene. 10 - sáb., ene. 17

American Airlines flights from Portland to San Antonio

Our best American Airlines deals on Portland to San Antonio flight tickets
American Airlines
Jan 29
PDX12:02 pmPortland
6h 02m
1 stop
SAT8:04 pmSan Antonio
Feb 3
SAT1:08 pmSan Antonio
11h 03m
1 stop
PDX10:11 pmPortland
$328
Find similar
American Airlines
Jan 8
PDX2:50 pmPortland
6h 19m
1 stop
SAT11:09 pmSan Antonio
Jan 12
SAT1:08 pmSan Antonio
11h 03m
1 stop
PDX10:11 pmPortland
$337
Find similar
American Airlines
Jan 11
PDX11:59 pmPortland
12h 17m
1 stop
SAT2:16 pmSan Antonio
Jan 15
SAT1:38 pmSan Antonio
8h 13m
1 stop
PDX7:51 pmPortland
$345
Find similar

United Airlines flights from Portland to San Antonio

Our best United Airlines deals on Portland to San Antonio flight tickets
United Airlines
Jan 10
PDX7:51 pmPortland
10h 50m
2 stops
SAT8:41 amSan Antonio
Jan 17
SAT8:30 amSan Antonio
7h 15m
1 stop
PDX1:45 pmPortland
$289
Find similar
United Airlines
Jan 15
PDX12:59 pmPortland
6h 22m
1 stop
SAT9:21 pmSan Antonio
Jan 18
SAT1:20 pmSan Antonio
6h 50m
1 stop
PDX6:10 pmPortland
$307
Find similar
United Airlines
Dec 24
PDX2:35 pmPortland
6h 13m
1 stop
SAT10:48 pmSan Antonio
Jan 14
SAT1:20 pmSan Antonio
6h 50m
1 stop
PDX6:10 pmPortland
$319
Find similar

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 diciembre 11, 2025.
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

dom. 1/4

12:47 pm-11:21 am

1 stop20h 34m

San Antonio

jue. 1/8

11:55 am-9:34 am

1 stop23h 39m

$195

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 1/25

11:09 am-12:25 pm

1 stop23h 16m

San Antonio

dom. 2/1

1:15 pm-11:18 am

1 stop24h 03m

$203

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 1/11

1:02 pm-11:00 am

2 stops19h 58m

San Antonio

jue. 1/15

10:15 am-11:04 am

1 stop26h 49m

$214

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

jue. 12/25

12:47 pm-12:17 am

1 stop9h 30m

San Antonio

mié. 1/7

3:55 pm-11:15 am

1 stop21h 20m

$220

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

jue. 1/15

11:59 am-10:22 am

1 stop20h 23m

San Antonio

dom. 1/18

5:02 pm-5:24 pm

2 stops26h 22m

$236

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 3/8

12:04 pm-12:17 am

1 stop10h 13m

San Antonio

lun. 3/9

6:45 am-11:09 am

1 stop6h 24m

$238

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 1/25

11:09 am-7:33 pm

2 stops30h 24m

San Antonio

dom. 2/1

1:15 pm-11:18 am

1 stop24h 03m

$248

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

mié. 12/24

3:59 pm-9:23 am

1 stop15h 24m

San Antonio

mié. 1/7

3:55 pm-11:15 am

1 stop21h 20m

$261

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

dom. 1/4

12:47 pm-11:21 am

1 stop20h 34m

San Antonio

jue. 1/8

5:03 pm-5:39 pm

2 stops26h 36m

$268

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

sáb. 1/10

6:10 am-4:30 pm

1 stop8h 20m

San Antonio

sáb. 1/17

10:15 am-3:35 pm

1 stop7h 20m

$284

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?

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.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Tuesday when prices can be found for as low as $347. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $459.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Portland to San Antonio in the evening for as low as $332. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the afternoon, with an average ticket price of $394. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $394 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 $320 on momondo.

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

As of December 2025, prices for Portland to San Antonio flights are approximately 17% 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

6h 15m

Direct flights

None
The fastest flight from Portland to San Antonio takes 6h 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

  • How far is Portland to San Antonio by plane?

    San Antonio is 1717.5 mi away from Portland. By plane, this route typically takes 6h 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
5.8
3,084 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
SouthwestPriceFrom $291Free CancellationRating
7.9
4,252 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.

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb. 1/10
sáb. 1/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States