PDX - SAT

$86 Find Cheap Flights from Portland to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to San Antonio departing on 5/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to San Antonio.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to San Antonio.
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Everything you should know

Cheapest round-trip
$216
Typical prices: $556-$373
Frontier
Sat 5/23Thu 5/28
PDX - SAT • 1 stop
Cheapest one-way
$86
Typical prices: $143-$307
Frontier
Sat 5/23
PDX - SAT • 1 stop
Top airlines
Cheapest • from $216 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and San Antonio. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $396 (round-trip)
Shortest trip • 5h 25m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 22% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to San Antonio (PDX-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to San Antonio

Sat, May 23 - Thu, May 28
Frontier Logo
12:35 pm - 6:59 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
9:09 pm - 10:20 am
SAT
-
PDX
15h 11m
1 stop
$216Frontier
Thu, May 28 - Sun, May 31
Frontier Logo
12:35 pm - 6:59 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
8:59 pm - 10:20 am
SAT
-
PDX
15h 21m
1 stop
$221Frontier
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
12:35 pm - 6:59 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
7:54 pm - 4:46 pm
SAT
-
PDX
22h 52m
1 stop
$223Frontier
Fri, Jun 5 - Mon, Jun 8
Frontier Logo
11:15 am - 8:14 pm
PDX
-
SAT
6h 59m
1 stop
Frontier Logo
7:54 pm - 4:35 pm
SAT
-
PDX
22h 41m
1 stop
$230Frontier
Wed, Aug 19 - Sat, Aug 22
Frontier Logo
5:42 pm - 6:56 pm
PDX
-
SAT
23h 14m
1 stop
Frontier Logo
7:51 pm - 4:57 pm
SAT
-
PDX
23h 06m
1 stop
$241Frontier
Fri, Jun 26 - Tue, Jun 30
Frontier Logo
12:26 pm - 6:56 pm
PDX
-
SAT
28h 30m
1 stop
Frontier Logo
7:51 pm - 4:35 pm
SAT
-
PDX
22h 44m
1 stop
$243Frontier
Fri, Jun 12 - Sun, Jun 14
Frontier Logo
8:42 pm - 8:11 pm
PDX
-
SAT
21h 29m
1 stop
Frontier Logo
8:56 pm - 7:47 pm
SAT
-
PDX
24h 51m
1 stop
$261Frontier
Fri, May 22 - Mon, May 25
Frontier Logo
12:35 pm - 6:59 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
7:54 pm - 5:01 pm
SAT
-
PDX
23h 07m
1 stop
$270Frontier
Sun, Jun 7 - Thu, Jun 11
Frontier Logo
12:35 pm - 6:59 pm
PDX
-
SAT
28h 24m
1 stop
Frontier Logo
7:51 pm - 4:57 pm
SAT
-
PDX
23h 06m
1 stop
$281Frontier
Fri, Jun 26 - Sat, Jul 4
Frontier Logo
12:26 pm - 6:56 pm
PDX
-
SAT
28h 30m
1 stop
Frontier Logo
8:56 pm - 6:04 pm
SAT
-
PDX
23h 08m
1 stop
$282Frontier
Booking Insights

KAYAK's insights & trends for Portland to San Antonio flights

Get data-powered insights and trends into flights from Portland to San Antonio to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Portland to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to San Antonio departing in May.

What is the cheapest month to fly from Portland to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to San Antonio is August, where tickets cost $307 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $491 and $436 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to San Antonio, you should book around 5 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$86
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from Portland to San Antonio

When to book flights from Portland to San Antonio

Are your dates flexible? Find out the best times to travel from Portland to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to San Antonio

  • What parking options are available at Portland International Airport?

    Portland International Airport offers a variety of safe parking options to passengers at different rates, which include short-term parking, long-term parking, economy parking, and valet parking. The cheapest parking option is the economy parking lot, while valet parking is the most expensive but most convenient. Passengers using the airport’s parking can pay using Visa, MasterCard, Discover, American Express, debit cards, and cash.

  • What accessibility services are provided at San Antonio International Airport?

    San Antonio International Airport provides passengers with multiple accessibility facilities to improve the passenger experience. These facilities include designated parking for disabled passengers and family and accessible restrooms in each of the terminals. Additionally, the airport uses Aira to give assistance to passengers with visual impairments, as well as providing TTY phones at the gate concourse and ticket counter lobby of Terminal A, and concourse walkway at Terminal B.

  • How do I get from downtown Portland to Portland International Airport?

    Portland’s light rail system is the most convenient method to go from Portland's downtown to the airport. The travel from downtown Portland to the airport on the MAX Red Line takes less than 40min. Every day at 4:45 a.m., the first train arrives at the airport. Alternatively, you can drive to the airport or take a taxi, which will save you approximately 20min.

  • Is Portland International Airport child friendly?

    When in Portland International Airport with children, make sure to visit the kids’ play areas, one of which is located close to gate C17 on Concourse C, and the other before security close to the D/E security checkpoint. The airport also provides two nursing rooms at the main terminal at Concourse B and D for the convenience of breastfeeding moms.

  • What is the cheapest flight from Portland to San Antonio?

    In the last 3 days, the lowest price for a flight from Portland to San Antonio was $86 for a one-way ticket and $216 for a round-trip.

  • Do I need a passport to fly between Portland and San Antonio?

    No

  • Which airports will I be using when flying from Portland to San Antonio?

    Portland and San Antonio are both served by 1 main airport. You will leave Portland from Portland and will be arriving at San Antonio.

  • Which aircraft models fly most regularly from Portland to San Antonio?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to San Antonio?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Portland and San Antonio, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Portland to San Antonio, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to San Antonio are Southwest and Delta. With an average price for the route of $429 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $414 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Portland to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Portland with another airline. Booking your flights between Portland and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Portland to San Antonio

  • Travelers exploring flights from Portland to San Antonio will find themselves departing from Portland International Airport. When taking a domestic flight out of Portland International Airport (PDX), it is recommended that you arrive at least 2h before your scheduled time of departure. Arriving early will allow you to go through the TSA security checks and check in.
  • If you happen to lose any of your items when moving through Portland International Airport, head on over to the Lost and Found Office located in the Baggage Level at the terminal. The office is open daily from 10 a.m. to 5 p.m.
  • When traveling from Portland International Airport, make sure to check out the art display in the terminal that exhibits the finest works of art from the region’s artists. Additionally, the airport welcomes volunteer musicians who perform in the airport terminal to offer a unique airport experience.
  • On touching down at San Antonio International Airport (SAT), make sure to visit the lounges available in the airport where you can enjoy a variety of services, such as free high-speed Wi-Fi, and food and drinks. The USO Lounge is located outside security in Terminal B while the United Airlines United Club Lounge is located inside security.
  • You have multiple options to get to downtown San Antonio from San Antonio International Airport. If traveling lightly, you can choose to use the Line 5 bus that will take you approximately 30min to get to the city. If you have more luggage or would like to get to San Antonio quicker, take a taxi or drive, which will take you approximately 12min.

Reviews of the top 5 airlines serving from Portland to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Portland to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4307 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.6Crew
8.1Boarding
Airline reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

4.0 OkayDavid, Apr 2026
COS - DAL
Read more Southwest reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Great flight but super high price. Glad it was a business trip and not personal

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

It isvvery small flight. No leg room . No space to put my personal item at feet.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Everything was on time and service on the flight was great!

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Got home at 3am after deboarding the plane. No compensation offered by American

Flights on time w/o delays. However, my baggage was damaged. Ground crew, throws baggage from plane to the baggage carrier, carelessly.

Business class was very good, one of my best flights

American flight was diverted and delayed but app didn’t show that information so I wasn’t able to change my connection until the last min.

The plane was very creaky and lots of ringing. Plane was dirty and dingy. I couldn't hear the captain's announcements from the flight deck. Not sure if it was the captain or the audio equipment, but good thing there wasn't an emergency where we needed clear instructions. The overhead compartments were clearly full, but the flight crew allowed people to stand in the back with their carry on luggage. Then after everyone boarded, they had to go to the front to gate check their luggage because there was no room for their bags and then they returned to their seats...such a waste of time when clearly the overhead compartments were full when they originally boarded.

Air condition was not working for long both after boarding and also after landing ; unbearably hot and suffocating

Human interaction. Thought there would be more service-even a smile would have been nice.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

Everything you need to know for your flight from Portland to San Antonio

Information on your arrival and departure airports