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$110+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — PWM
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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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 11, 2025.

Round-trip from

$328
(Delta)

One-way from

$110
(United Airlines)

Popular in

February

Cheapest in

March

Average price

$436
From San Antonio to Portland
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One-way flight from San Antonio to Portland
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($23 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 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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.
jue. 10/23:25 pmSAT - PWM
1 stop7h 46mDelta
mié. 10/84:48 pmPWM - SAT
1 stop6h 54mDelta
Deal found 9/10$328
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/16:00 amSAT - PWM
1 stop6h 53mUnited Airlines
mié. 10/154:57 pmPWM - SAT
1 stop6h 58mUnited Airlines
Deal found 9/10$363
This American Airlines deal was found by Cheapflights users on 9/11. 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.
jue. 9/256:35 amSAT - PWM
1 stop8h 59mAmerican Airlines
mar. 9/306:01 amPWM - SAT
1 stop7h 22mAmerican Airlines
Deal found 9/11$383
This American Airlines deal was found by Cheapflights users on 9/11. 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.
mié. 10/17:50 amSAT - PWM
1 stop8h 49mAmerican Airlines
mié. 10/154:15 pmPWM - SAT
1 stop6h 42mAmerican Airlines
Deal found 9/11$406
This Delta deal was found by Cheapflights users on 9/11. 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.
jue. 9/255:29 amSAT - PWM
1 stop6h 00mDelta
mar. 9/301:40 pmPWM - SAT
2 stops10h 45mDelta
Deal found 9/11$417

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 11, 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

jue. 10/2

3:25 pm-12:11 am

1 stop7h 46m

Portland

mié. 10/8

4:48 pm-10:42 pm

1 stop6h 54m

$328

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 10/1

2:25 pm-11:59 pm

2 stops8h 34m

Portland

mié. 10/15

4:57 pm-10:55 pm

1 stop6h 58m

$368

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

jue. 9/25

6:35 am-4:34 pm

1 stop8h 59m

Portland

mar. 9/30

6:01 am-12:23 pm

1 stop7h 22m

$383

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 10/1

7:50 am-5:39 pm

1 stop8h 49m

Portland

mié. 10/15

4:15 pm-9:57 pm

1 stop6h 42m

$406

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

jue. 9/25

5:29 am-12:29 pm

1 stop6h 00m

Portland

mar. 9/30

1:40 pm-11:25 pm

2 stops10h 45m

$417

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

vie. 9/26

3:25 pm-12:11 am

1 stop7h 46m

Portland

mar. 9/30

6:00 am-3:36 pm

2 stops10h 36m

$417

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 10/8

1:05 pm-9:44 pm

1 stop7h 39m

$110

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 10/8

11:35 am-12:05 am

2 stops11h 30m

$144

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

vie. 11/28

5:15 am-12:30 pm

1 stop6h 15m

$157

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

mié. 10/8

6:35 am-1:37 pm

1 stop6h 02m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
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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

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 11, 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
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

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
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

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
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

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 $328, Delta can have you in Portland, Maine from San Antonio in 7h 46m. 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 64% 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
Lewiston

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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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$373FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$311Average$471FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$458FlexibilityNo cancel feeOn-time63%

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