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$152+ Cheap flights from San Antonio to Portland, ME (SAT - PWM)

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — PWM
oct. 24 — oct. 311
vie. 10/24
vie. 10/31
1 adult, Economy
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Cheapflights Tip: The best prices from San Antonio to Portland are usually found in March or April, booked 42 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from San Antonio to Portland

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Portland (PWM). 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 septiembre 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Delta)

One-way from

$152
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$379
Provider with most accurate pricing for San Antonio-Portland flight deals.
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Provider most trusted by Cheapflights users for San Antonio-Portland flights.
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From San Antonio to Portland
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One-way flight from San Antonio to Portland
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Antonio to Portland

Cheapest flights from San Antonio to Portland
Explore the most affordable flight options available from San Antonio to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 24, 2025.

This Delta deal was found by Cheapflights users on 9/23. 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.
sáb. 12/63:30 pmSAT - PWM
1 stop5h 47mDelta
sáb. 12/136:00 amPWM - SAT
1 stop9h 21mDelta
Deal found 9/23$317
This United Airlines deal was found by Cheapflights users on 9/23. 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.
sáb. 12/67:00 amSAT - PWM
1 stop6h 19mUnited Airlines
sáb. 12/136:00 amPWM - SAT
2 stops11h 37mUnited Airlines
Deal found 9/23$322
This United Airlines deal was found by Cheapflights users on 9/24. 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.
sáb. 12/62:22 pmSAT - PWM
2 stops7h 50mUnited Airlines
mié. 12/103:00 pmPWM - SAT
2 stops8h 59mUnited Airlines
Deal found 9/24$327
This American Airlines deal was found by Cheapflights users on 9/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/86:48 amSAT - PWM
1 stop8h 40mAmerican Airlines
sáb. 12/135:17 pmPWM - SAT
1 stop6h 18mAmerican Airlines
Deal found 9/23$340
This United Airlines deal was found by Cheapflights users on 9/23. 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.
lun. 12/82:12 pmSAT - PWM
1 stop6h 48mUnited Airlines
sáb. 12/136:00 amPWM - SAT
2 stops11h 37mUnited Airlines
Deal found 9/23$345
This Delta deal was found by Cheapflights users on 9/24. 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.
mar. 11/253:00 pmSAT - PWM
1 stop6h 19mDelta
mié. 12/34:53 pmPWM - SAT
1 stop7h 03mDelta
Deal found 9/24$352
This United Airlines deal was found by Cheapflights users on 9/24. 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.
jue. 10/236:00 amSAT - PWM
1 stop6h 53mUnited Airlines
jue. 10/303:00 pmPWM - SAT
2 stops8h 56mUnited Airlines
Deal found 9/24$368
This United Airlines deal was found by Cheapflights users on 9/24. 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.
sáb. 10/256:45 amSAT - PWM
1 stop6h 48mUnited Airlines
vie. 11/74:54 pmPWM - SAT
1 stop7h 22mUnited Airlines
Deal found 9/24$382
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/205:45 pmSAT - PWM
2 stops39h 56mMultiple Airlines
vie. 10/249:46 amPWM - SAT
1 stop9h 29mMultiple Airlines
Deal found 9/24$386

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Portland 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 septiembre 24, 2025.
Use the filters below to find and compare flights from San Antonio to Portland that are best for you.

Fly from

San Antonio

Fly to

Portland

Route

Depart

Return

Price

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

sáb. 2/7

5:20 am-11:57 am

1 stop5h 37m

Portland

vie. 2/20

5:30 am-1:26 pm

1 stop8h 56m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

sáb. 12/6

5:30 am-12:05 pm

1 stop5h 35m

Portland

mié. 12/10

5:30 am-1:05 pm

1 stop8h 35m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 2/11

5:20 am-11:57 am

1 stop5h 37m

Portland

jue. 2/19

5:30 am-11:30 am

1 stop7h 00m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

sáb. 12/6

3:30 pm-10:17 pm

1 stop5h 47m

Portland

sáb. 12/13

6:00 am-2:21 pm

1 stop9h 21m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

sáb. 12/6

7:00 am-2:19 pm

1 stop6h 19m

Portland

sáb. 12/13

6:00 am-4:37 pm

2 stops11h 37m

$322

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

sáb. 12/6

2:12 pm-10:00 pm

1 stop6h 48m

Portland

mié. 12/10

3:00 pm-10:59 pm

2 stops8h 59m

$322

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 2/11

10:45 am-11:05 pm

2 stops11h 20m

Portland

vie. 2/20

5:30 am-1:26 pm

1 stop8h 56m

$322

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mar. 2/10

1:15 pm-9:59 pm

1 stop7h 44m

Portland

mié. 2/18

2:35 pm-10:19 pm

2 stops8h 44m

$322

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mar. 2/10

5:30 am-3:56 pm

2 stops9h 26m

Portland

jue. 2/19

6:00 am-5:22 pm

2 stops12h 22m

$327

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

lun. 12/8

6:48 am-4:28 pm

1 stop8h 40m

Portland

sáb. 12/13

5:17 pm-10:35 pm

1 stop6h 18m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 16 results
1
2

Compare providers for flights from San Antonio to Portland

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 San Antonio to Portland in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Portland, Maine 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 San Antonio-Portland, Maine 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 San Antonio to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from San Antonio 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 San Antonio to Portland

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Portland. Price data was last updated on September 19, 2025.

To ensure you get the cheapest price possible for a flight from San Antonio to Portland, Maine, you should look to book at least 42 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from San Antonio to Portland, Maine (average of $296). Flying from San Antonio to Portland, Maine in July is currently the most expensive (average of $394). 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.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated septiembre 24, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from San Antonio to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,244 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,244 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from San Antonio to Portland, Maine?

    For as low as $317, Delta can have you in Portland, Maine from San Antonio in 5h 35m. Airlines will cover a distance of 1827 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $172, American Airlines will fly you from San Antonio to Portland, Maine and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $296 and $311, respectively. You may be able to fly from San Antonio to Portland, Maine for 62% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to Portland 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 San Antonio to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from San Antonio to Portland, Maine (average of $296). Flying from San Antonio to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway

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Top 4 airlines flying from San Antonio to Portland

Discover the top 4 airlines that operate flights from San Antonio to Portland. 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 septiembre 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$355FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$311Average$459FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$456FlexibilityNo cancel feeOn-time63%

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