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Cheap flights from Portland to San Antonio from $56

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 12/7. 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.
Frontier Logo
12:51 pm - 7:00 pmPDX-SAT
28h 09m1 stop
Frontier Logo
3:06 pm - 11:56 amSAT-PDX
22h 50m1 stop
$131Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
12:51 pm - 8:30 pmPDX-SAT
29h 39m2 stops
Frontier Logo
1:51 pm - 9:34 amSAT-PDX
21h 43m1 stop
$156Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
11:59 am - 10:22 amPDX-SAT
20h 23m1 stop
Frontier Logo
12:31 pm - 9:49 amSAT-PDX
23h 18m2 stops
$179Frontier
Find Deal
Thu, Jan 15 - Thu, Jan 22
Frontier Logo
11:59 am - 10:22 amPDX-SAT
20h 23m1 stop
Frontier Logo
8:53 pm - 5:24 pmSAT-PDX
22h 31m2 stops
$184Frontier
Find Deal
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
5:32 pm - 6:59 pmPDX-SAT
23h 27m1 stop
Multiple Airlines Logo
5:40 am - 4:37 pmSAT-PDX
12h 57m1 stop
$194Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Multiple Airlines Logo
7:26 pm - 11:08 amPDX-SAT
13h 42m1 stop
Multiple Airlines Logo
5:10 am - 1:24 pmSAT-PDX
10h 14m1 stop
$199Multiple Airlines
Find Deal
Sun, Dec 14 - Thu, Dec 18
Frontier Logo
11:59 am - 10:22 amPDX-SAT
20h 23m1 stop
Frontier Logo
8:53 pm - 10:33 amSAT-PDX
15h 40m1 stop
$203Frontier
Find Deal
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
5:32 pm - 6:59 pmPDX-SAT
23h 27m1 stop
Multiple Airlines Logo
5:40 am - 4:37 pmSAT-PDX
12h 57m1 stop
$208Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
12:05 pm - 9:18 amPDX-SAT
19h 13m1 stop
Frontier Logo
11:55 am - 9:34 amSAT-PDX
23h 39m1 stop
$214Frontier
Find Deal
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
5:32 pm - 6:59 pmPDX-SAT
23h 27m1 stop
Multiple Airlines Logo
5:10 am - 1:24 pmSAT-PDX
10h 14m1 stop
$234Multiple Airlines
Find Deal
Mon, Dec 15 - Thu, Dec 18

Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets
Delta
Dec 12
PDX9:10 amPortland
12h 39m
2 stops
SAT11:49 pmSan Antonio
Dec 14
SAT6:00 amSan Antonio
11h 33m
2 stops
PDX3:33 pmPortland
$274
Find similar
Delta
Feb 14
PDX1:32 pmPortland
5h 56m
1 stop
SAT9:28 pmSan Antonio
Feb 21
SAT7:00 amSan Antonio
7h 04m
1 stop
PDX12:04 pmPortland
$285
Find similar
Delta
Feb 14
PDX9:45 pmPortland
10h 17m
1 stop
SAT10:02 amSan Antonio
Feb 23
SAT5:55 pmSan Antonio
18h 32m
2 stops
PDX10:27 amPortland
$289
Find similar

American Airlines flights from Portland to San Antonio

Our best American Airlines deals on Portland to San Antonio flight tickets
American Airlines
Feb 15
PDX11:48 amPortland
9h 40m
1 stop
SAT11:28 pmSan Antonio
Feb 21
SAT1:40 pmSan Antonio
10h 08m
1 stop
PDX9:48 pmPortland
$264
Find similar
American Airlines
Jan 14
PDX6:00 amPortland
6h 16m
1 stop
SAT2:16 pmSan Antonio
Jan 17
SAT7:00 amSan Antonio
17h 11m
1 stop
PDX10:11 pmPortland
$283
Find similar
American Airlines
Jan 14
PDX5:14 amPortland
8h 31m
2 stops
SAT3:45 pmSan Antonio
Jan 17
SAT7:00 amSan Antonio
17h 11m
1 stop
PDX10:11 pmPortland
$288
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 November 17, 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

Thu 12/4

12:51 pm-7:00 pm

1 stop28h 09m

San Antonio

Thu 12/11

3:06 pm-11:56 am

1 stop22h 50m

$131

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 12/4

12:51 pm-8:30 pm

2 stops29h 39m

San Antonio

Thu 12/11

1:51 pm-9:34 am

1 stop21h 43m

$156

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/15

11:59 am-10:22 am

1 stop20h 23m

San Antonio

Thu 1/22

12:31 pm-9:49 am

2 stops23h 18m

$179

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/15

11:59 am-10:22 am

1 stop20h 23m

San Antonio

Sun 1/18

8:53 pm-5:24 pm

2 stops22h 31m

$184

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 12/5

5:32 pm-6:59 pm

1 stop23h 27m

San Antonio

Mon 12/8

5:40 am-4:37 pm

1 stop12h 57m

$194

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sun 12/14

7:26 pm-11:08 am

1 stop13h 42m

San Antonio

Thu 12/18

5:10 am-1:24 pm

1 stop10h 14m

$199

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/15

11:59 am-10:22 am

1 stop20h 23m

San Antonio

Sun 1/18

8:53 pm-10:33 am

1 stop15h 40m

$203

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 12/5

5:32 pm-6:59 pm

1 stop23h 27m

San Antonio

Mon 12/8

5:40 am-4:37 pm

1 stop12h 57m

$208

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/8

12:05 pm-9:18 am

1 stop19h 13m

San Antonio

Sun 1/11

11:55 am-9:34 am

1 stop23h 39m

$214

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Mon 12/15

5:32 pm-6:59 pm

1 stop23h 27m

San Antonio

Thu 12/18

5:10 am-1:24 pm

1 stop10h 14m

$234

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.

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 $385 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 $307 on momondo.

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

As of November 2025, prices for Portland to San Antonio flights are approximately 32% 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

Direct flights

None
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 32m.

  • 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 $135Free CancellationRating
5.8
3,106 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $144Free CancellationRating
6.3
8,144 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $238Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $247Free CancellationRating
8.0
11,309 reviews
Search Alaska Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
8,006 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,014 reviews
Search United Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • United Airlines Flights From Portland to San Antonio

    United Airlines flight deals from Portland to San Antonio start from $278 round-trip. Over the 6 United Airlines flights for this route in a normal week, average airfare is usually $410 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Boerne
Kerrville
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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