Which layover airport offers the lowest fares from Portland to San Antonio?

Flights via Phoenix (PHX) offer the lowest average round-trip price of $296.

Which airport is the most popular layover for flights between Portland and San Antonio?

Denver (DEN) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Portland to San Antonio?

Denver (DEN) has the shortest average layover time for this route: 1h 02m.

Which layover airport has the shortest travel time from Portland to San Antonio?

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 5h 15m.

What is the cheapest airline that flies from Portland to San Antonio?

Delta is the most popular carrier operating from Portland to San Antonio

How many flights depart from Portland to San Antonio on average per week?

The number of flights available between Portland and San Antonio is 5 per week as of November 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

What airlines fly to San Antonio?

Alaska Airlines, Delta and Southwest are the top three most popular airlines that fly to San Antonio from Portland according to our data. Alaska Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 8 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

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?

As of November 2025, there are 7 operators available to choose from 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.

$56 Cheap Flights from Portland to San Antonio in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to San Antonio

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:32 pm - 6:59 pmPDX-SAT

23h 27m1 stop

5:40 am - 4:37 pmSAT-PDX

12h 57m1 stop

$184Multiple Airlines

Find Deal

Fri, Dec 12 - Mon, Dec 15

6:19 pm - 8:41 pmPDX-SAT

24h 22m1 stop

12:31 pm - 9:49 amSAT-PDX

23h 18m2 stops

$219Frontier

Find Deal

Thu, Jan 15 - Thu, Jan 22

12:05 pm - 9:18 amPDX-SAT

19h 13m1 stop

10:13 am - 9:34 amSAT-PDX

25h 21m2 stops

$226Frontier

Find Deal

Thu, Jan 8 - Sun, Jan 11

11:14 am - 7:00 pmPDX-SAT

29h 46m2 stops

5:40 am - 4:37 pmSAT-PDX

12h 57m1 stop

$249Multiple Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

5:32 pm - 6:59 pmPDX-SAT

23h 27m1 stop

5:40 am - 4:37 pmSAT-PDX

12h 57m1 stop

$253Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

11:35 am - 11:49 pmPDX-SAT

10h 14m2 stops

6:00 am - 3:33 pmSAT-PDX

11h 33m2 stops

$256Delta

Find Deal

Wed, Dec 10 - Wed, Dec 17

7:26 pm - 11:08 amPDX-SAT

13h 42m1 stop

7:11 pm - 3:00 pmSAT-PDX

45h 49m2 stops

$258Frontier

Find Deal

Sun, Dec 7 - Mon, Dec 22

2:23 pm - 12:37 amPDX-SAT

8h 14m2 stops

6:00 am - 3:33 pmSAT-PDX

11h 33m2 stops

$265Delta

Find Deal

Fri, Dec 12 - Mon, Dec 15

7:26 pm - 11:08 amPDX-SAT

13h 42m1 stop

2:01 pm - 1:24 pmSAT-PDX

25h 23m1 stop

$266Frontier

Find Deal

Sun, Dec 7 - Mon, Dec 22

12:47 pm - 12:17 amPDX-SAT

9h 30m1 stop

6:45 am - 11:43 amSAT-PDX

6h 58m1 stop

$268Frontier

Find Deal

Thu, Dec 25 - Tue, Dec 30

Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets

Frontier

Dec 18

PDX12:47 pmPortland

9h 30m

1 stop

SAT12:17 amSan Antonio

Dec 25

SAT6:45 amSan Antonio

6h 58m

1 stop

PDX11:43 amPortland

$216

Find similar

Frontier

Jan 15

PDX6:19 pmPortland

24h 22m

1 stop

SAT8:41 pmSan Antonio

Jan 22

SAT12:31 pmSan Antonio

23h 18m

2 stops

PDX9:49 amPortland

$219

Find similar

Frontier

Dec 7

PDX7:26 pmPortland

13h 42m

1 stop

SAT11:08 amSan Antonio

Dec 22

SAT7:11 pmSan Antonio

45h 49m

2 stops

PDX3:00 pmPortland

$258

Find similar

Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets

Delta

Dec 10

PDX11:35 amPortland

10h 14m

2 stops

SAT11:49 pmSan Antonio

Dec 17

SAT6:00 amSan Antonio

11h 33m

2 stops

PDX3:33 pmPortland

$256

Find similar

Delta

Dec 12

PDX2:23 pmPortland

8h 14m

2 stops

SAT12:37 amSan Antonio

Dec 15

SAT6:00 amSan Antonio

11h 33m

2 stops

PDX3:33 pmPortland

$265

Find similar

Delta

Dec 3

PDX6:29 amPortland

6h 21m

1 stop

SAT2:50 pmSan Antonio

Dec 10

SAT12:46 pmSan Antonio

13h 29m

2 stops

PDX12:15 amPortland

$281

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 12/12

5:32 pm-6:59 pm

1 stop23h 27m

San Antonio

Mon 12/15

5:40 am-4:37 pm

1 stop12h 57m

$184

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/15

6:19 pm-8:41 pm

1 stop24h 22m

San Antonio

Thu 1/22

12:31 pm-9:49 am

2 stops23h 18m

$219

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 1/8

12:05 pm-9:18 am

1 stop19h 13m

San Antonio

Sun 1/11

10:13 am-9:34 am

2 stops25h 21m

$226

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 12/4

11:14 am-7:00 pm

2 stops29h 46m

San Antonio

Sun 12/7

5:40 am-4:37 pm

1 stop12h 57m

$249

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 12/5

5:32 pm-6:59 pm

1 stop23h 27m

San Antonio

Sun 12/7

5:40 am-4:37 pm

1 stop12h 57m

$253

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Wed 12/10

11:35 am-11:49 pm

2 stops10h 14m

San Antonio

Wed 12/17

6:00 am-3:33 pm

2 stops11h 33m

$256

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sun 12/7

7:26 pm-11:08 am

1 stop13h 42m

San Antonio

Mon 12/22

7:11 pm-3:00 pm

2 stops45h 49m

$258

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Fri 12/12

2:23 pm-12:37 am

2 stops8h 14m

San Antonio

Mon 12/15

6:00 am-3:33 pm

2 stops11h 33m

$265

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Sun 12/7

7:26 pm-11:08 am

1 stop13h 42m

San Antonio

Mon 12/22

2:01 pm-1:24 pm

1 stop25h 23m

$266

PortlandSan Antonio

PDX - SAT

PDXSAT

Portland

Thu 12/25

12:47 pm-12:17 am

1 stop9h 30m

San Antonio

Tue 12/30

6:45 am-11:43 am

1 stop6h 58m

$268

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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 05m.
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?
As of November 2025, there are 7 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to San Antonio is American Airlines (27% of total bookings). The next most popular airlines are Southwest (23%), Delta (21%), and United Airlines (15%).

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
Frontier	PriceFrom $135	Free Cancellation	Rating 5.8 3,104 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $144	Free Cancellation	Rating 6.3 8,156 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $238	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $247	Free Cancellation	Rating 8.0 11,321 reviews	Search Alaska Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,027 reviews	Search United Airlines flights
Southwest	PriceFrom $296	Free Cancellation	Rating 8.0 4,249 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 5 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.

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.

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

Sat 12/20

Sat 12/27

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Texas

Popular cities in the United States

Flights to New Yorkfrom $44

Flights to Los Angelesfrom $48

Flights to Miamifrom $48

Flights to Chicagofrom $48

Flights to Orlandofrom $39

Flights to Las Vegasfrom $49

Flights to San Franciscofrom $55

Flights to Washington, D.C.from $36

Flights to Bostonfrom $58

Flights to Atlantafrom $38

Flights to Dallasfrom $45

Flights to Seattlefrom $57

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 12/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to San Antonio

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Frontier flights from Portland to San Antonio

Our best Frontier deals on Portland to San Antonio flight tickets

Delta flights from Portland to San Antonio

Our best Delta deals on Portland to San Antonio flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to San Antonio that are best for you.

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?

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

How far in advance should I book a flight to San Antonio?

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.

What is the cheapest airline that flies from Portland to San Antonio?

Delta is the most popular carrier operating from Portland to San Antonio

What airlines fly to San Antonio?

Which airport is the most popular layover for flights between Portland and San Antonio?

Denver (DEN) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Portland to San Antonio?

Flights via Phoenix (PHX) offer the lowest average round-trip price of $296.

Which layover airport has the shortest travel time from Portland to San Antonio?

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 5h 15m.

Which layover airport has the shortest connection time from Portland to San Antonio?

Denver (DEN) has the shortest average layover time for this route: 1h 02m.

How many flights depart from Portland to San Antonio on average per week?

The number of flights available between Portland and San Antonio is 5 per week as of November 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

When to book flights from Portland to San Antonio

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

How far is Portland to San Antonio by plane?

When did momondo last update prices for flights from Portland Airport to San Antonio Airport?

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?

What documentation or ID do you need to fly to San Antonio Airport?

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

United Airlines Flights From Portland to San Antonio

Traveling to a place near San Antonio?

Why use momondo?

Why should I use momondo to find a flight deal from Portland to San Antonio?

Can I find flights from Portland to San Antonio with flexible booking policies on momondo?

How can momondo help me find flights from Portland to San Antonio?

I’m not ready to book a flight from Portland to San Antonio right now. Can momondo alert me if prices change?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Texas