$159+ Cheap flights from Portland, ME to San Antonio (PWM - SAT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAT
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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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.Cheap flight deals from Portland to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to San AntonioExplore 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 October 25, 2026.
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 October 25, 2026.
This Delta deal was found by Cheapflights users on 10/20. 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.
Mon 12/144:53 pm -
1 stop7h 04m
Thu 12/241:00 pm -
1 stop7h 50m
Deal found 10/20![Delta logo]()
$281
This Delta deal was found by Cheapflights users on 10/21. 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.
Tue 12/14:00 pm -
2 stops9h 35m
Mon 12/74:36 pm -
1 stop6h 16m
Deal found 10/21![Delta logo]()
$304
This Southwest deal was found by Cheapflights users on 10/22. 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.
Tue 12/812:45 pm -
1 stop9h 40m
Fri 12/116:35 am -
2 stops8h 55m
Deal found 10/22![Southwest logo]()
$305
This Southwest deal was found by Cheapflights users on 10/21. 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.
Tue 12/13:25 pm -
1 stop7h 00m
Mon 12/75:30 am -
1 stop8h 15m
Deal found 10/21![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 10/20. 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 12/164:53 pm -
1 stop7h 04m
Thu 12/245:20 am -
1 stop5h 59m
Deal found 10/20![Delta logo]()
$320
This Southwest deal was found by Cheapflights users on 10/23. 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.
Mon 12/73:25 pm -
1 stop7h 00m
Fri 12/116:35 am -
2 stops8h 55m
Deal found 10/23![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 10/20. 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.
Mon 12/144:53 pm -
1 stop7h 04m
Fri 12/185:25 am -
1 stop5h 32m
Deal found 10/20![Delta logo]()
$360
Best flights from Portland to San AntonioDiscover carefully curated flight deals from Portland to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Portland to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This Southwest deal was found by Cheapflights users on 10/22. 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.
Tue 12/812:45 pm -
1 stop9h 40m
Fri 12/116:35 am -
2 stops8h 55m
Deal found 10/22![Southwest logo]()
$305
This Delta deal was found by Cheapflights users on 10/20. 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.
Tue 12/14:00 pm -
2 stops9h 35m
Mon 12/71:45 pm -
2 stops9h 36m
Deal found 10/20![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Tue 2/27:10 am -
1 stop8h 54m
Wed 2/35:15 am -
2 stops8h 18m
Deal found 10/22![United Airlines logo]()
$406
This Southwest deal was found by Cheapflights users on 10/24. 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.
Sat 1/165:05 am -
2 stops12h 20m
Thu 1/211:40 pm -
2 stops7h 05m
Deal found 10/24![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sat 11/215:08 pm -
1 stop6h 49m
Fri 11/271:15 pm -
2 stops9h 06m
Deal found 10/20![United Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 10/24. 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.
Thu 11/126:00 am -
1 stop7h 02m
Wed 11/186:30 am -
1 stop5h 31m
Deal found 10/24![Delta logo]()
$511
Last-minute flights from Portland to San AntonioDiscover last-minute flight deals from Portland to San Antonio. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Antonio. Data last updated October 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:09 pm -
1 stop16h 36m
Thu 11/58:20 pm -
2 stops44h 31m
Deal found 10/20![Multiple Airlines logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:09 pm -
1 stop16h 36m
Wed 11/118:20 pm -
2 stops35h 48m
Deal found 10/23![Multiple Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 11/72:05 pm -
1 stop7h 19m
Wed 11/111:15 pm -
1 stop7h 36m
Deal found 10/23![United Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 10/21. 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.
Thu 11/1911:39 am -
2 stops12h 15m
Sun 11/225:30 am -
1 stop5h 28m
Deal found 10/21![Delta logo]()
$383
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 11/195:45 am -
1 stop7h 54m
Sun 11/226:01 am -
1 stop8h 34m
Deal found 10/21![American Airlines logo]()
$446
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/195:50 am -
2 stops10h 48m
Sun 11/226:34 am -
2 stops11h 28m
Deal found 10/20![United Airlines logo]()
$496
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sat 11/215:08 pm -
1 stop6h 49m
Fri 11/276:34 am -
1 stop6h 42m
Deal found 10/20![United Airlines logo]()
$436
One-way flights from Portland to San AntonioSearch for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Delta deal was found by Cheapflights users on 10/20. 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.
Sat 11/216:00 am -
1 stop7h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$159
This Delta deal was found by Cheapflights users on 10/20. 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.
Fri 11/204:50 pm -
1 stop7h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$204
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 4/176:01 pm -
1 stop6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 12/265:35 am -
1 stop7h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 10/24. 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.
Sat 4/1712:50 pm -
2 stops9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Southwest logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sat 11/215:08 pm -
3 stops16h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:35 pm -
3 stops50h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 4/179:10 am -
3 stops14h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$460
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Sat 12/2611:19 am -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$553
Find 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 October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $281 (Delta) |
One-way from | $159 (Delta) |
Popular in | January |
Cheapest in | September |
Average price | $479 |
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 7,457,451 searches. Data last updated October 25, 2026.
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
Cheapest round-trip
Quickest round-trip
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Sat 11/21
6:00 am-12:02 pm
1 stop7h 02m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$159
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Fri 11/20
6:00 am-5:40 pm
2 stops12h 40m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$209
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Tue 12/8
12:45 pm-9:25 pm
1 stop9h 40m
San Antonio
Fri 12/11
6:35 am-4:30 pm
2 stops8h 55m
$305
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Tue 12/1
4:00 pm-12:35 am
2 stops9h 35m
San Antonio
Mon 12/7
1:45 pm-12:21 am
2 stops9h 36m
$309
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Sat 4/17
12:50 pm-9:25 pm
2 stops9h 35m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$369
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Sat 1/16
5:05 am-4:25 pm
2 stops12h 20m
San Antonio
Thu 1/21
1:40 pm-9:45 pm
2 stops7h 05m
$395
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Tue 2/2
7:10 am-3:04 pm
1 stop8h 54m
San Antonio
Wed 2/3
5:15 am-2:33 pm
2 stops8h 18m
$406
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Sat 11/21
5:08 pm-8:29 am
3 stops16h 21m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$410
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Fri 11/20
5:35 pm-7:33 pm
3 stops50h 58m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$451
PortlandSan Antonio
PWM Portland - SAT San Antonio
PWMSAT
Portland
Sat 4/17
9:10 am-11:08 pm
3 stops14h 58m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$460
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Portland to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to San Antonio in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
PWM-SAT
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
What is the cheapest month to book a flight from Portland, Maine to San Antonio?
Currently, September is the cheapest month in which you can book a flight from Portland, Maine to San Antonio (average of $341). Flying from Portland, Maine to San Antonio in January is currently the most expensive (average of $767). 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.
How much does it cost to fly round-trip from Portland, Maine to San Antonio?
Airfare is below average for this route at the moment.
Portland, Maine to San Antonio flights typically cost between $504 and $918 in December.The cheapest round-trip price found within the last 5 days was $281 on Delta (Dec 14-Dec 24).
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 October 25, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Portland to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Entertainment
7.4
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Comfort
8.0
Entertainment
7.4
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Comfort
8.0
Entertainment
7.4
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Comfort
8.0
Entertainment
7.4
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Comfort
8.0
Entertainment
7.4
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
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.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Portland and San Antonio flights
Browse other Portland and San Antonio flight options. Last updated on October 25, 2026.
Other flights from Portland
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Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
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 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$297 | Average$483 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$316 | Average$563 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$341 | Average$592 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$380 | Average$470 | FlexibilityNo cancel fee | On-time71% |