$178+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAT
5月 28 — 6月 41
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
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Best
Last-minute
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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 4月 28, 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 4月 28, 2026.
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週四 6/46:00 am
PWM
- SAT
1 stop8h 32m
Delta
週一 6/82:29 pm
SAT
- PWM
1 stop7h 46m
Delta
Deal found 4/23![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/23. 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.
週二 9/16:00 am
PWM
- SAT
1 stop7h 11m
United Airlines
週三 9/26:40 am
SAT
- PWM
1 stop6h 48m
United Airlines
Deal found 4/23![United Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 4/25. 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.
週一 6/84:45 pm
PWM
- SAT
1 stop6h 36m
Delta
週五 6/122:40 pm
SAT
- PWM
1 stop7h 25m
Delta
Deal found 4/25![Delta logo]()
$411
This Southwest deal was found by Cheapflights users on 4/25. 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.
週一 6/81:00 pm
PWM
- SAT
2 stops7h 35m
Southwest
週五 6/123:45 pm
SAT
- PWM
2 stops7h 20m
Southwest
Deal found 4/25![Southwest logo]()
$464
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 4月 28, 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 4月 28, 2026.
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週四 6/46:00 am
PWM
- SAT
1 stop8h 32m
Delta
週一 6/82:29 pm
SAT
- PWM
1 stop7h 46m
Delta
Deal found 4/23![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/23. 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.
週二 9/16:00 am
PWM
- SAT
2 stops10h 39m
United Airlines
週三 9/25:30 am
SAT
- PWM
2 stops8h 05m
United Airlines
Deal found 4/23![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 4/24. 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.
週五 8/215:55 am
PWM
- SAT
1 stop7h 30m
Southwest
週二 8/252:35 pm
SAT
- PWM
1 stop6h 30m
Southwest
Deal found 4/24![Southwest logo]()
$437
This Delta deal was found by Cheapflights users on 4/25. 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.
週一 6/84:45 pm
PWM
- SAT
1 stop6h 36m
Delta
週五 6/122:40 pm
SAT
- PWM
1 stop7h 25m
Delta
Deal found 4/25![Delta logo]()
$411
This United Airlines deal was found by Cheapflights users on 4/27. 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.
週二 8/256:00 am
PWM
- SAT
1 stop7h 11m
United Airlines
週三 8/266:00 am
SAT
- PWM
1 stop6h 54m
United Airlines
Deal found 4/27![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 4/25. 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.
週一 6/81:00 pm
PWM
- SAT
2 stops7h 35m
Southwest
週五 6/123:45 pm
SAT
- PWM
2 stops7h 20m
Southwest
Deal found 4/25![Southwest logo]()
$464
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週五 7/2411:47 am
PWM
- SAT
2 stops13h 37m
Delta
週日 7/267:50 am
SAT
- PWM
1 stop9h 02m
Delta
Deal found 4/23![Delta logo]()
$472
Last-minute flights from Portland to San AntonioDiscover last-minute flight deals from Portland to San Antonio. Data last updated 4月 28, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Antonio. Data last updated 4月 28, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週日 5/106:00 am
PWM
- SAT
1 stop8h 32m
Delta
週四 5/142:27 pm
SAT
- PWM
1 stop7h 42m
Delta
Deal found 4/23![Delta logo]()
$573
This Southwest deal was found by Cheapflights users on 4/26. 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.
週一 5/115:30 am
PWM
- SAT
2 stops9h 25m
Southwest
週五 5/151:25 pm
SAT
- PWM
2 stops9h 00m
Southwest
Deal found 4/26![Southwest logo]()
$597
This American Airlines deal was found by Cheapflights users on 4/25. 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.
週六 5/166:01 pm
PWM
- SAT
1 stop6h 58m
American Airlines
週五 5/221:40 pm
SAT
- PWM
1 stop9h 11m
American Airlines
Deal found 4/25![American Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 4/23. 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.
週六 5/164:50 pm
PWM
- SAT
1 stop7h 04m
United Airlines
週五 5/2212:01 pm
SAT
- PWM
1 stop10h 50m
United Airlines
Deal found 4/23![United Airlines logo]()
$695
This Southwest deal was found by Cheapflights users on 4/25. 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.
週二 5/193:55 pm
PWM
- SAT
2 stops8h 55m
Southwest
週五 5/224:30 pm
SAT
- PWM
1 stop5h 55m
Southwest
Deal found 4/25![Southwest logo]()
$572
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 4月 28, 2026.
Search for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated 4月 28, 2026.
This United Airlines deal was found by Cheapflights users on 4/28. 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.
週一 5/256:00 am
PWM
- SAT
1 stop7h 12m
United Airlines
Deal found 4/28![United Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
週日 5/317:56 pm
PWM
- SAT
3 stops49h 18m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$201
This United Airlines deal was found by Cheapflights users on 4/26. 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.
週日 5/315:15 am
PWM
- SAT
1 stop6h 39m
United Airlines
Deal found 4/26![United Airlines logo]()
$234
This Delta deal was found by Cheapflights users on 4/24. 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.
週一 7/136:00 am
PWM
- SAT
2 stops12h 14m
Delta
Deal found 4/24![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 4/25. 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.
週一 7/135:20 pm
PWM
- SAT
1 stop7h 00m
Southwest
Deal found 4/25![Southwest logo]()
$244
This Southwest deal was found by Cheapflights users on 4/28. 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.
週一 5/255:30 am
PWM
- SAT
2 stops8h 45m
Southwest
Deal found 4/28![Southwest logo]()
$255
This Southwest deal was found by Cheapflights users on 4/26. 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.
週日 5/315:30 am
PWM
- SAT
2 stops11h 50m
Southwest
Deal found 4/26![Southwest logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
週一 7/137:00 am
PWM
- SAT
3 stops38h 14m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
週一 5/253:51 pm
PWM
- SAT
3 stops52h 08m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$277
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 4月 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $317 (Delta) |
One-way from | $178 (United Airlines) |
Popular in | January |
Cheapest in | February |
Average price | $463 |
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 4月 28, 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
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週四 6/4
6:00 am-1:32 pm
1 stop8h 32m
San Antonio
週一 6/8
2:29 pm-11:15 pm
1 stop7h 46m
$317
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週一 6/8
4:45 pm-10:21 pm
1 stop6h 36m
San Antonio
週五 6/12
2:40 pm-11:05 pm
1 stop7h 25m
$411
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週二 9/1
6:00 am-3:39 pm
2 stops10h 39m
San Antonio
週三 9/2
5:30 am-2:35 pm
2 stops8h 05m
$414
Quickest round-trip
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週五 8/21
5:55 am-12:25 pm
1 stop7h 30m
San Antonio
週二 8/25
2:35 pm-10:05 pm
1 stop6h 30m
$437
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週二 8/25
6:00 am-12:11 pm
1 stop7h 11m
San Antonio
週三 8/26
6:00 am-1:54 pm
1 stop6h 54m
$437
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週一 6/8
1:00 pm-7:35 pm
2 stops7h 35m
San Antonio
週五 6/12
3:45 pm-12:05 am
2 stops7h 20m
$464
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週五 7/24
11:47 am-12:24 am
2 stops13h 37m
San Antonio
週日 7/26
7:50 am-5:52 pm
1 stop9h 02m
$472
Cheapest one-way
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週一 5/25
6:00 am-12:12 pm
1 stop7h 12m
$178
Quickest one-way
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週一 7/13
6:00 am-11:09 am
1 stop6h 09m
$234
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
週日 5/31
5:36 pm-11:06 pm
1 stop6h 30m
$234
Showing 1-10 of 16 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 April.
| 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, February is the cheapest month in which you can book a flight from Portland, Maine to San Antonio (average of $381). 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?
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 4月 28, 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.
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 4月 28, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on 4月 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4月 28, 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 2,558,603 searches. Data last updated 4月 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$223 | Average$397 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$263 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$281 | Average$426 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$324 | Average$647 | FlexibilityNo cancel fee | On-time63% |