$190+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAT
Apr 11 — Apr 181
Round-trip
1 adult, Economy
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Find cheap flights from Portland to San Antonio with Cheapflights
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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
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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 March 12, 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 March 12, 2026.
This Delta deal was found by Cheapflights users on 3/9. 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 5/65:21 am
PWM
- SAT
1 stop7h 00m
Delta
Tue 5/125:20 am
SAT
- PWM
1 stop5h 40m
Delta
Deal found 3/9![Delta logo]()
$337
This Delta deal was found by Cheapflights users on 3/8. 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 4/95:23 am
PWM
- SAT
1 stop7h 16m
Delta
Sat 4/115:10 am
SAT
- PWM
1 stop5h 59m
Delta
Deal found 3/8![Delta logo]()
$379
This American Airlines deal was found by Cheapflights users on 3/7. 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 5/1610:54 am
PWM
- SAT
1 stop7h 41m
American Airlines
Sun 5/246:00 am
SAT
- PWM
1 stop6h 38m
American Airlines
Deal found 3/7![American Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 3/8. 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 6/95:30 am
PWM
- SAT
1 stop6h 15m
Southwest
Fri 6/123:45 pm
SAT
- PWM
1 stop7h 20m
Southwest
Deal found 3/8![Southwest logo]()
$407
This Delta deal was found by Cheapflights users on 3/9. 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.
Sun 5/106:25 am
PWM
- SAT
1 stop7h 03m
Delta
Thu 5/1412:08 pm
SAT
- PWM
2 stops11h 35m
Delta
Deal found 3/9![Delta logo]()
$418
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/96:01 pm
PWM
- SAT
1 stop6h 58m
American Airlines
Sat 4/111:19 pm
SAT
- PWM
1 stop9h 08m
American Airlines
Deal found 3/9![American Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 3/7. 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 5/165:40 am
PWM
- SAT
2 stops10h 10m
Southwest
Sun 5/243:05 pm
SAT
- PWM
2 stops7h 05m
Southwest
Deal found 3/7![Southwest logo]()
$423
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 March 12, 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 March 12, 2026.
This Southwest deal was found by Cheapflights users on 3/8. 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 6/93:45 pm
PWM
- SAT
2 stops8h 55m
Southwest
Fri 6/123:45 pm
SAT
- PWM
2 stops7h 20m
Southwest
Deal found 3/8![Southwest logo]()
$417
This Delta deal was found by Cheapflights users on 3/9. 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.
Sun 5/106:25 am
PWM
- SAT
1 stop7h 03m
Delta
Thu 5/1412:08 pm
SAT
- PWM
2 stops11h 35m
Delta
Deal found 3/9![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 3/6. 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 5/24:50 pm
PWM
- SAT
1 stop7h 04m
United Airlines
Tue 5/52:00 pm
SAT
- PWM
1 stop6h 19m
United Airlines
Deal found 3/6![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 3/9. 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 4/154:43 pm
PWM
- SAT
1 stop7h 25m
Delta
Sun 4/195:10 am
SAT
- PWM
1 stop5h 55m
Delta
Deal found 3/9![Delta logo]()
$443
Last-minute flights from Portland to San AntonioDiscover last-minute flight deals from Portland to San Antonio. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Antonio. Data last updated March 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/8. 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 4/95:23 am
PWM
- SAT
1 stop7h 16m
Delta
Sat 4/115:10 am
SAT
- PWM
1 stop5h 59m
Delta
Deal found 3/8![Delta logo]()
$379
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/96:01 pm
PWM
- SAT
1 stop6h 58m
American Airlines
Sat 4/111:19 pm
SAT
- PWM
1 stop9h 08m
American Airlines
Deal found 3/9![American Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:50 pm
PWM
- SAT
1 stop6h 25m
Southwest
Sun 4/195:15 am
SAT
- PWM
1 stop5h 50m
Southwest
Deal found 3/10![Southwest logo]()
$457
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:48 pm
PWM
- SAT
1 stop6h 54m
Delta
Sun 4/195:10 am
SAT
- PWM
2 stops8h 01m
Delta
Deal found 3/10![Delta logo]()
$472
This Delta deal was found by Cheapflights users on 3/9. 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 4/154:43 pm
PWM
- SAT
1 stop7h 25m
Delta
Sun 4/195:10 am
SAT
- PWM
1 stop5h 55m
Delta
Deal found 3/9![Delta logo]()
$443
This Southwest deal was found by Cheapflights users on 3/6. 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 4/234:50 pm
PWM
- SAT
1 stop6h 25m
Southwest
Mon 4/275:00 am
SAT
- PWM
1 stop8h 10m
Southwest
Deal found 3/6![Southwest logo]()
$500
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/236:04 am
PWM
- SAT
2 stops10h 42m
United Airlines
Mon 4/276:49 am
SAT
- PWM
1 stop6h 31m
United Airlines
Deal found 3/6![United Airlines logo]()
$508
This Southwest deal was found by Cheapflights users on 3/9. 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.
Sun 4/264:20 pm
PWM
- SAT
1 stop9h 25m
Southwest
Sun 5/35:15 am
SAT
- PWM
1 stop10h 35m
Southwest
Deal found 3/9![Southwest logo]()
$494
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 March 12, 2026.
Search for one-way flight options from Portland to San Antonio. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:50 pm
PWM
- SAT
1 stop8h 25m
Southwest
Deal found 3/10![Southwest logo]()
$190
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/236:04 am
PWM
- SAT
2 stops10h 42m
United Airlines
Deal found 3/6![United Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/275:06 pm
PWM
- SAT
2 stops41h 21m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/275:45 am
PWM
- SAT
1 stop7h 42m
United Airlines
Deal found 3/11![United Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:19 pm
PWM
- SAT
3 stops43h 08m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 3/216:18 pm
PWM
- SAT
2 stops40h 09m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$374
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 March 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $337 (Delta) |
One-way from | $190 (Southwest) |
Popular in | January |
Cheapest in | February |
Average price | $457 |
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 March 12, 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
Tue 6/9
3:45 pm-11:40 pm
2 stops8h 55m
San Antonio
Fri 6/12
3:45 pm-12:05 am
2 stops7h 20m
$417
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Sun 5/10
6:25 am-12:28 pm
1 stop7h 03m
San Antonio
Thu 5/14
12:08 pm-12:43 am
2 stops11h 35m
$418
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Sat 5/2
4:50 pm-10:54 pm
1 stop7h 04m
San Antonio
Tue 5/5
2:00 pm-9:19 pm
1 stop6h 19m
$427
Quickest round-trip
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Wed 4/15
4:43 pm-11:08 pm
1 stop7h 25m
San Antonio
Sun 4/19
5:10 am-12:05 pm
1 stop5h 55m
$443
Cheapest one-way
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Thu 4/23
4:43 pm-11:08 pm
1 stop7h 25m
$190
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Thu 4/23
6:04 am-3:46 pm
2 stops10h 42m
$195
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Thu 4/9
2:50 pm-11:00 pm
2 stops9h 10m
$225
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Fri 3/27
5:06 pm-9:27 am
2 stops41h 21m
$284
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Fri 3/27
5:45 am-12:27 pm
1 stop7h 42m
$339
PortlandSan Antonio
PWM - SAT
PWMSAT
Portland
Sat 3/21
6:18 pm-9:27 am
2 stops40h 09m
$374
Showing 1-10 of 11 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 March.
| 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
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 March 12, 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
Overall
8.0
Comfort
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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 March 12, 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 March 12, 2026.
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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 March 12, 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 March 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$148 | Average$393 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$234 | Average$426 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$358 | Average$596 | FlexibilityNo cancel fee | On-time63% |