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Cheap flights from San Antonio to Portland from $182

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Portland departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Antonio to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:29 pm - 10:00 pm
SAT
-
PWM
8h 31m
1 stop
American Airlines Logo
6:09 pm - 12:40 am
PWM
-
SAT
7h 31m
1 stop
$363American Airlines
Tue, Aug 18 - Thu, Aug 27
Delta Logo
2:22 pm - 12:59 am
SAT
-
PWM
9h 37m
2 stops
Delta Logo
6:05 am - 11:10 am
PWM
-
SAT
6h 05m
1 stop
$368Delta
Tue, Aug 18 - Thu, Aug 27
American Airlines Logo
12:29 pm - 10:00 pm
SAT
-
PWM
8h 31m
1 stop
American Airlines Logo
3:06 pm - 9:38 pm
PWM
-
SAT
7h 32m
1 stop
$370American Airlines
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
10:50 am - 9:10 pm
SAT
-
PWM
9h 20m
2 stops
Southwest Logo
5:40 am - 4:00 pm
PWM
-
SAT
11h 20m
2 stops
$373Southwest
Wed, Aug 26 - Sat, Aug 29
Delta Logo
10:46 am - 11:30 pm
SAT
-
PWM
11h 44m
2 stops
Delta Logo
6:00 am - 1:38 pm
PWM
-
SAT
8h 38m
2 stops
$374Delta
Tue, Aug 18 - Thu, Aug 27
American Airlines Logo
12:36 pm - 10:00 pm
SAT
-
PWM
8h 24m
2 stops
American Airlines Logo
3:06 pm - 9:38 pm
PWM
-
SAT
7h 32m
1 stop
$375American Airlines
Sat, Aug 22 - Sat, Aug 29
Delta Logo
1:55 pm - 11:29 pm
SAT
-
PWM
8h 34m
1 stop
Delta Logo
1:59 pm - 12:08 am
PWM
-
SAT
11h 09m
2 stops
$377Delta
Fri, Sep 11 - Mon, Sep 14
Delta Logo
6:50 am - 9:31 pm
SAT
-
PWM
13h 41m
2 stops
Delta Logo
2:14 pm - 9:04 pm
PWM
-
SAT
7h 50m
1 stop
$378Delta
Sat, Aug 22 - Tue, Aug 25
American Airlines Logo
12:36 pm - 10:00 pm
SAT
-
PWM
8h 24m
2 stops
American Airlines Logo
7:28 am - 3:48 pm
PWM
-
SAT
9h 20m
2 stops
$380American Airlines
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
6:30 am - 2:34 pm
SAT
-
PWM
7h 04m
1 stop
United Airlines Logo
5:15 am - 10:59 am
PWM
-
SAT
6h 44m
1 stop
$381United Airlines
Tue, Aug 18 - Mon, Aug 24

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American Airlines flights from San Antonio to Portland, Maine

Our best American Airlines deals on San Antonio to Portland, Maine flight tickets
American Airlines
Aug 18
SAT12:29 pmSan Antonio
8h 31m
1 stop
PWM10:00 pmPortland
Aug 27
PWM6:09 pmPortland
7h 31m
1 stop
SAT12:40 amSan Antonio
$363
American Airlines
Aug 22
SAT12:29 pmSan Antonio
8h 31m
1 stop
PWM10:00 pmPortland
Aug 29
PWM3:06 pmPortland
7h 32m
1 stop
SAT9:38 pmSan Antonio
$370
American Airlines
Aug 22
SAT12:36 pmSan Antonio
8h 24m
2 stops
PWM10:00 pmPortland
Aug 29
PWM3:06 pmPortland
7h 32m
1 stop
SAT9:38 pmSan Antonio
$375

Southwest flights from San Antonio to Portland, Maine

Our best Southwest deals on San Antonio to Portland, Maine flight tickets
Southwest
Aug 26
SAT10:50 amSan Antonio
9h 20m
2 stops
PWM9:10 pmPortland
Aug 29
PWM5:40 amPortland
11h 20m
2 stops
SAT4:00 pmSan Antonio
$373
Southwest
Oct 10
SAT2:40 pmSan Antonio
6h 30m
1 stop
PWM10:10 pmPortland
Oct 15
PWM5:20 amPortland
6h 40m
1 stop
SAT11:00 amSan Antonio
$382
Southwest
Aug 20
SAT2:55 pmSan Antonio
6h 30m
1 stop
PWM10:25 pmPortland
Aug 26
PWM5:45 amPortland
6h 15m
1 stop
SAT11:00 amSan Antonio
$431

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Portland, Maine 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, momondo users made 832,500 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from San Antonio to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 8/18

12:29 pm-10:00 pm

1 stop8h 31m

Portland

Thu 8/27

6:09 pm-12:40 am

1 stop7h 31m

$363

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 8/18

2:22 pm-12:59 am

2 stops9h 37m

Portland

Thu 8/27

6:05 am-11:10 am

1 stop6h 05m

$368

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Sat 8/22

12:29 pm-10:00 pm

1 stop8h 31m

Portland

Sat 8/29

3:06 pm-9:38 pm

1 stop7h 32m

$370

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 8/26

10:50 am-9:10 pm

2 stops9h 20m

Portland

Sat 8/29

5:40 am-4:00 pm

2 stops11h 20m

$373

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 8/18

10:46 am-11:30 pm

2 stops11h 44m

Portland

Thu 8/27

6:00 am-1:38 pm

2 stops8h 38m

$374

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Sat 8/22

12:36 pm-10:00 pm

2 stops8h 24m

Portland

Sat 8/29

3:06 pm-9:38 pm

1 stop7h 32m

$375

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Fri 9/11

1:55 pm-11:29 pm

1 stop8h 34m

Portland

Mon 9/14

1:59 pm-12:08 am

2 stops11h 09m

$377

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Sat 8/22

6:50 am-9:31 pm

2 stops13h 41m

Portland

Tue 8/25

2:14 pm-9:04 pm

1 stop7h 50m

$378

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Sat 8/22

12:36 pm-10:00 pm

2 stops8h 24m

Portland

Sat 8/29

7:28 am-3:48 pm

2 stops9h 20m

$380
Quickest round-trip

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 8/18

6:30 am-2:34 pm

1 stop7h 04m

Portland

Mon 8/24

5:15 am-10:59 am

1 stop6h 44m

$381

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portland from

How to get the cheapest flight ticket from San Antonio to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between San Antonio and Portland, Maine?

Prices are currently low for flights on this route.

Typical prices usually range from $396 to $642.
The lowest price recently found on this route was $363.

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from San Antonio is in January. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $311.

How have San Antonio to Portland, Maine flight prices changed over time?

As of July 2026, prices for San Antonio to Portland, Maine flights are approximately 169% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Portland, Maine (SAT to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Portland, Maine

Fastest flight time

6h 00m

Direct flights

None
The fastest flight from San Antonio to Portland, Maine takes 6h 00m
There are no direct flights from San Antonio to Portland, Maine. There are no popular flight routes from San Antonio to Portland, Maine.
Search flight deals

Frequently asked questions about flying from San Antonio to Portland, Maine

  • How far is San Antonio to Portland by plane?

    Portland is 1835.4 mi away from San Antonio. Flights usually cover this in 6h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Antonio Airport to Portland Airport?

    Prices for flights from San Antonio Airport to Portland Airport were last updated today.

  • How many operators does momondo search for flights from San Antonio Airport to Portland Airport?

  • How old do you have to be to fly from San Antonio Airport to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Antonio Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Antonio to Portland, Maine?

Best airlines flying from San Antonio to Portland, Maine

Compare and see reviews for airlines that fly from San Antonio to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $218Free CancellationRating
7.4
10,027 reviews
Search United Airlines flights
American AirlinesPriceFrom $294Free CancellationRating
7.1
11,839 reviews
Search American Airlines flights
DeltaPriceFrom $296Free CancellationRating
7.8
8,487 reviews
Search Delta flights
SouthwestPriceFrom $378Free CancellationRating
8.0
4,238 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Lewiston
Brunswick
Conway
Freeport
Bartlett
Gorham
Auburn
Windham
Bath
Intervale
Oxford
Georgetown
Falmouth
Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Portland?

Finding the right flight to Portland from San Antonio is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

Can I find flights from San Antonio to Portland with flexible booking policies on momondo?

Yes. All flights to Portland from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Antonio to Portland?

Once all potential San Antonio to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Antonio to Portland right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Antonio to Portland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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