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$144+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — PWM
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Find cheap flights from San Antonio to Portland with Cheapflights

1. Tell us where you want to go

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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

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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 12/267:05 amSAT - PWM
1 stop6h 35mUnited Airlines
Tue 12/306:00 amPWM - SAT
1 stop10h 03mUnited Airlines
Deal found 12/11$703
This Delta deal was found by Cheapflights users on 12/11. 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.
Sun 12/285:20 amSAT - PWM
1 stop5h 56mDelta
Tue 12/305:45 amPWM - SAT
1 stop7h 43mDelta
Deal found 12/11$788
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/137:20 amSAT - PWM
2 stops14h 52mUnited Airlines
Fri 1/25:30 amPWM - SAT
1 stop6h 53mUnited Airlines
Deal found 12/11$814
This Southwest deal was found by Cheapflights users on 12/11. 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.
Sun 12/285:25 pmSAT - PWM
1 stop5h 40mSouthwest
Tue 12/303:15 pmPWM - SAT
2 stops9h 40mSouthwest
Deal found 12/11$827
This Southwest deal was found by Cheapflights users on 12/11. 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.
Sat 12/135:30 amSAT - PWM
1 stop5h 35mSouthwest
Fri 1/23:15 pmPWM - SAT
2 stops9h 40mSouthwest
Deal found 12/11$843
This American Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/136:47 amSAT - PWM
1 stop13h 55mAmerican Airlines
Fri 1/27:17 amPWM - SAT
1 stop14h 13mAmerican Airlines
Deal found 12/11$849
This Delta deal was found by Cheapflights users on 12/10. 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.
Tue 12/165:20 amSAT - PWM
1 stop5h 53mDelta
Thu 12/184:53 pmPWM - SAT
1 stop7h 04mDelta
Deal found 12/10$897

Find 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 December 12, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$364
(United Airlines)

One-way from

$144
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$706
Provider with most accurate pricing for San Antonio-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Portland flights.
Search Deals
From San Antonio to Portland
Search Deals
One-way flight from San Antonio to Portland
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Sat 2/14

2:10 pm-9:14 pm

1 stop6h 04m

Portland

Wed 2/18

6:00 am-3:38 pm

2 stops10h 38m

$364

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 2/3

12:52 pm-10:07 pm

1 stop8h 15m

Portland

Tue 2/17

12:17 pm-8:43 pm

1 stop9h 26m

$368

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 2/3

5:45 am-12:10 pm

1 stop5h 25m

Portland

Tue 2/17

1:00 pm-9:55 pm

2 stops9h 55m

$403

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 2/3

9:00 am-11:28 pm

2 stops13h 28m

Portland

Tue 2/17

6:00 am-10:47 am

3 stops29h 47m

$590

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Fri 12/26

7:05 am-2:40 pm

1 stop6h 35m

Portland

Tue 12/30

6:00 am-3:03 pm

1 stop10h 03m

$703

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Fri 1/30

6:30 am-10:22 am

1 stop26h 52m

$144

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 2/11

1:40 pm-10:27 pm

1 stop7h 47m

$159

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 2/11

12:52 pm-10:07 pm

1 stop8h 15m

$159

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 2/11

9:00 am-11:21 pm

2 stops13h 21m

$164

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 2/11

5:12 pm-10:49 am

3 stops40h 37m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 12 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on San Antonio-Portland, Maine flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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 December 5, 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, March is the cheapest month in which you can book a flight from San Antonio to Portland, Maine (average of $120). Flying from San Antonio to Portland, Maine in April is currently the most expensive (average of $198). 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 December 12, 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
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 $403, United Airlines can have you in Portland, Maine from San Antonio in 5h 25m. 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 $286 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.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $86. United Airlines flights start at $148 while deals on Delta start at $148 one-way.

  • 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, March is the cheapest month in which you can book a flight from San Antonio to Portland, Maine (average of $120). Flying from San Antonio to Portland, Maine in April is currently the most expensive (average of $198). 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
North Conway
Brunswick
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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$363FlexibilityNo cancel feeOn-time71%
DeltaCheapest$286Average$407FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$311Average$438FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$466FlexibilityNo cancel feeOn-time63%

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