HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$165+ Cheap flights from Portland, ME to San Antonio (PWM - SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to San Antonio are usually found in June or July, booked 40 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap flight deals from Portland to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$334
(Delta)

One-way from

$165
(Mytrip)

Popular in

April

Cheapest in

June

Average price

$394
From Portland to San Antonio
Search Deals
One-way flight from Portland to San Antonio
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Portland to San Antonio

Cheapest flights from Portland to San Antonio
Explore the most affordable flight options available from Portland to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:00 amPWM - SAT
1 stop6h 10mDelta
Sun 8/244:31 pmSAT - PWM
1 stop7h 17mDelta
Deal found 6/11$334
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/315:40 pmPWM - SAT
1 stop6h 00mSouthwest
Mon 8/44:40 pmSAT - PWM
1 stop6h 25mSouthwest
Deal found 6/11$362
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/282:14 pmPWM - SAT
1 stop7h 19mUnited Airlines
Sun 8/316:48 amSAT - PWM
1 stop6h 38mUnited Airlines
Deal found 6/12$387
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/212:39 pmPWM - SAT
1 stop7h 00mAmerican Airlines
Sun 7/68:04 amSAT - PWM
1 stop8h 06mAmerican Airlines
Deal found 6/11$392
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1312:46 pmPWM - SAT
1 stop22h 01mMultiple Airlines
Sat 7/1911:13 amSAT - PWM
2 stops23h 32mMultiple Airlines
Deal found 6/10$420

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Portland to San Antonio that are best for you.

Fly from

Portland

Fly to

San Antonio

Route

Depart

Return

Price

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 8/20

6:00 am-11:10 am

1 stop6h 10m

San Antonio

Sun 8/24

4:31 pm-12:48 am

1 stop7h 17m

$334

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Thu 7/31

5:40 pm-10:40 pm

1 stop6h 00m

San Antonio

Mon 8/4

4:40 pm-12:05 am

1 stop6h 25m

$362

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Thu 8/28

2:14 pm-8:33 pm

1 stop7h 19m

San Antonio

Sun 8/31

6:48 am-2:26 pm

1 stop6h 38m

$387

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 7/2

12:39 pm-6:39 pm

1 stop7h 00m

San Antonio

Sun 7/6

8:04 am-5:10 pm

1 stop8h 06m

$392

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Sun 7/13

12:46 pm-9:47 am

1 stop22h 01m

San Antonio

Sat 7/19

11:13 am-11:45 am

2 stops23h 32m

$420

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Thu 7/17

12:58 pm-9:47 am

1 stop21h 49m

$165

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 7/23

5:55 am-11:36 am

1 stop6h 41m

$184

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 7/23

6:05 am-3:31 pm

2 stops10h 26m

$189

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Mon 7/28

7:40 pm-12:45 am

1 stop6h 05m

$224

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Thu 7/17

12:58 pm-7:22 pm

3 stops31h 24m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 11 results
1
2

Best time to book a flight from Portland to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Portland, Maine to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Portland to San Antonio. Price data was last updated on June 9, 2025.

The price you pay for your flight from Portland, Maine to San Antonio may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland, Maine to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Portland, Maine to San Antonio (average of $295). Flying from Portland, Maine to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Weekly flight availability from Portland, Maine to San Antonio

Explore weekly flight availability from Portland to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from PWM to SAT are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated June 12, 2025.
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Sun Country Air
6.9
Okay
345 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Crew

8.6

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Portland to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Portland to San Antonio?

    San Antonio is the airport most travelers will use when flying to San Antonio from Portland. Booking flights from Portland (PWM) to San Antonio (SAT) should be relatively easy as there is 1 daily flight to San Antonio from 4 different airlines. 6h 00m is how long a flight from Portland to San Antonio will take if you book a nonstop flight.

  • What are the cheapest airlines flying from Portland, Maine to San Antonio round-trip?

    Our cheapest airline available from Portland, Maine to San Antonio is Delta. Our recent data shows that you can find tickets from as low as $334 on this airline. Additional options worth looking into are Southwest and United Airlines, starting at $362 and $387 round-trip. Delta is priced at 31% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Portland, Maine to San Antonio one-way?

    The cheapest airline one-way is Sun Country Air, with whom users have recently found tickets for as low as $165. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Portland, Maine to San Antonio for a low price.

  • Can I find deals for flights from Portland to San Antonio that include hotel bookings?

    Yes. In addition to deals on Portland to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to San Antonio.

  • Can I find deals for business class flights from Portland to San Antonio?

    Yes. Cheapflights offers flight deals from Portland to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Portland, Maine to San Antonio (average of $295). Flying from Portland, Maine to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
New Braunfels

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Dallas/Fort Worth flights
Boston to Hobby flights
Boston to George Bush Intcntl flights
Boston to Austin flights
Boston to San Antonio flights
Boston to Love Field flights
Portland to Dallas/Fort Worth flights
Portland to Hobby flights
Boston to El Paso flights
Portland to George Bush Intcntl flights
Bangor to Hobby flights
Portland to Love Field flights
Portland to Austin flights
Bangor to George Bush Intcntl flights
Boston to Harlingen flights
Bangor to Dallas/Fort Worth flights
Boston to Midland flights
Bangor to Austin flights
Bangor to San Antonio flights
Boston to Abilene flights
Boston to Amarillo flights
Boston to Brownsville flights
Boston to Corpus Christi flights
Portland to El Paso flights
Boston to Killeen flights
Boston to Waco flights
Boston to McAllen flights
Boston to Tyler flights
Boston to Lubbock flights
Boston to Longview flights
Portland to San Angelo flights
Boston to College Station flights
Boston to San Angelo flights
Presque Isle to San Antonio flights
Portland to Harlingen flights
Portland to Killeen flights
Rockland to Dallas/Fort Worth flights
Augusta to Dallas/Fort Worth flights
Presque Isle to Hobby flights
Presque Isle to Dallas/Fort Worth flights
Boston to Laredo flights
Boston to Carlsbad flights
Boston to Beaumont flights
Bangor to Love Field flights
Bangor to Abilene flights

Top 4 airlines flying from Portland to San Antonio

Discover the top 4 airlines that operate flights from Portland to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$234Average$427FlexibilityNo cancel feeOn-time71%
DeltaCheapest$238Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$346Average$593FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$366Average$534FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.