Portland

$149+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — PWM
Aug 3 — Aug 101
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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 July 29, 2025.

Round-trip from

$297
(American Airlines)

One-way from

$149
(American Airlines)

Popular in

February

Cheapest in

March

Average price

$439
From San Antonio to Portland
One-way flight from San Antonio to Portland
High demand for flights, 4% potential price rise
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:35 amSAT - PWM
1 stop8h 59mAmerican Airlines
Tue 9/95:20 pmPWM - SAT
1 stop6h 16mAmerican Airlines
Deal found 7/27$297
This Delta deal was found by Cheapflights users on 7/29. 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 9/311:34 amSAT - PWM
2 stops12h 14mDelta
Tue 9/91:34 pmPWM - SAT
1 stop7h 45mDelta
Deal found 7/29$302
This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 10/1512:45 pmSAT - PWM
2 stops8h 45mSouthwest
Tue 10/285:45 amPWM - SAT
1 stop6h 10mSouthwest
Deal found 7/29$381
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Mon 8/182:15 pmSAT - PWM
2 stops18h 54mUnited Airlines
Sat 8/236:00 amPWM - SAT
2 stops10h 26mUnited Airlines
Deal found 7/28$487
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:28 pmSAT - PWM
3 stops38h 00mMultiple Airlines
Wed 9/36:18 pmPWM - SAT
2 stops18h 32mMultiple Airlines
Deal found 7/28$541

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 July 29, 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

Wed 9/3

6:35 am-4:34 pm

1 stop8h 59m

Portland

Tue 9/9

5:20 pm-10:36 pm

1 stop6h 16m

$297

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 9/3

11:34 am-12:48 am

2 stops12h 14m

Portland

Tue 9/9

1:34 pm-8:19 pm

1 stop7h 45m

$302

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 10/15

12:45 pm-10:30 pm

2 stops8h 45m

Portland

Tue 10/28

5:45 am-10:55 am

1 stop6h 10m

$381

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Mon 8/18

2:15 pm-10:09 am

2 stops18h 54m

Portland

Sat 8/23

6:00 am-3:26 pm

2 stops10h 26m

$487

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 8/27

8:28 pm-11:28 am

3 stops38h 00m

Portland

Wed 9/3

6:18 pm-11:50 am

2 stops18h 32m

$541

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 8/20

8:00 am-3:30 pm

1 stop6h 30m

$149

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 8/19

11:27 am-12:03 am

2 stops11h 36m

$154

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Fri 8/8

6:27 pm-11:35 am

1 stop16h 08m

$219

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 8/28

12:39 pm-11:28 am

2 stops21h 49m

$268

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 9/11

8:55 am-11:03 pm

3 stops13h 08m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 July 25, 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 July 29, 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.

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
8.0
Very good

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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

    Currently priced at $297, 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 Southwest - these airlines can fly you to your destination from $302 and $381, respectively. You may be able to fly from San Antonio to Portland, Maine for 38% 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 $149. Delta flights start at $154 while deals on Sun Country Air start at $219 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, 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$380FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$426FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$347Average$456FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$356Average$484FlexibilityNo cancel feeOn-time69%

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