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Cheap flights from San Antonio to Portland from $224

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 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Antonio to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:45 am - 12:10 pmSAT-PWM
5h 25m1 stop
Southwest Logo
12:45 pm - 11:05 pmPWM-SAT
11h 20m2 stops
$277Southwest
Find Deal
Tue, Jan 6 - Thu, Jan 8
Southwest Logo
12:15 pm - 10:15 pmSAT-PWM
9h 00m2 stops
Southwest Logo
3:30 pm - 11:05 pmPWM-SAT
8h 35m2 stops
$304Southwest
Find Deal
Tue, Jan 6 - Thu, Jan 8
Multiple Airlines Logo
12:45 pm - 10:22 amSAT-PWM
20h 37m1 stop
Multiple Airlines Logo
11:02 am - 11:52 pmPWM-SAT
13h 50m1 stop
$315Multiple Airlines
Find Deal
Tue, Jan 6 - Sat, Jan 10
Delta Logo
5:30 am - 12:03 pmSAT-PWM
5h 33m1 stop
Delta Logo
2:35 pm - 10:10 pmPWM-SAT
8h 35m1 stop
$317Delta
Find Deal
Tue, Jan 27 - Sat, Jan 31
Delta Logo
5:30 am - 5:16 pmSAT-PWM
10h 46m2 stops
Delta Logo
2:35 pm - 10:10 pmPWM-SAT
8h 35m1 stop
$322Delta
Find Deal
Tue, Jan 27 - Sat, Jan 31
Delta Logo
6:30 am - 5:16 pmSAT-PWM
9h 46m2 stops
Delta Logo
2:35 pm - 12:38 amPWM-SAT
11h 03m2 stops
$327Delta
Find Deal
Tue, Jan 27 - Sat, Jan 31
Southwest Logo
5:45 am - 12:10 pmSAT-PWM
5h 25m1 stop
Southwest Logo
3:30 pm - 9:10 pmPWM-SAT
6h 40m1 stop
$331Southwest
Find Deal
Tue, Jan 6 - Thu, Jan 8
Southwest Logo
5:45 am - 2:55 pmSAT-PWM
8h 10m1 stop
Southwest Logo
12:45 pm - 9:10 pmPWM-SAT
9h 25m1 stop
$382Southwest
Find Deal
Thu, Jan 22 - Tue, Jan 27
Southwest Logo
10:15 am - 10:15 pmSAT-PWM
11h 00m2 stops
Southwest Logo
3:30 pm - 9:10 pmPWM-SAT
6h 40m1 stop
$387Southwest
Find Deal
Thu, Jan 22 - Tue, Jan 27
Southwest Logo
12:25 pm - 10:15 pmSAT-PWM
8h 50m2 stops
Southwest Logo
12:45 pm - 11:05 pmPWM-SAT
11h 20m2 stops
$392Southwest
Find Deal
Thu, Jan 22 - Tue, Jan 27

Southwest flights from San Antonio to Portland, Maine

Our best Southwest deals on San Antonio to Portland, Maine flight tickets
Southwest
Jan 6
SAT5:45 amSan Antonio
5h 25m
1 stop
PWM12:10 pmPortland
Jan 8
PWM12:45 pmPortland
11h 20m
2 stops
SAT11:05 pmSan Antonio
$277
Find similar
Southwest
Jan 6
SAT12:15 pmSan Antonio
9h 00m
2 stops
PWM10:15 pmPortland
Jan 8
PWM3:30 pmPortland
8h 35m
2 stops
SAT11:05 pmSan Antonio
$304
Find similar
Southwest
Jan 6
SAT5:45 amSan Antonio
5h 25m
1 stop
PWM12:10 pmPortland
Jan 8
PWM3:30 pmPortland
6h 40m
1 stop
SAT9:10 pmSan Antonio
$331
Find similar

Delta flights from San Antonio to Portland, Maine

Our best Delta deals on San Antonio to Portland, Maine flight tickets
Delta
Jan 27
SAT5:30 amSan Antonio
5h 33m
1 stop
PWM12:03 pmPortland
Jan 31
PWM2:35 pmPortland
8h 35m
1 stop
SAT10:10 pmSan Antonio
$317
Find similar
Delta
Jan 27
SAT5:30 amSan Antonio
10h 46m
2 stops
PWM5:16 pmPortland
Jan 31
PWM2:35 pmPortland
8h 35m
1 stop
SAT10:10 pmSan Antonio
$322
Find similar
Delta
Jan 27
SAT6:30 amSan Antonio
9h 46m
2 stops
PWM5:16 pmPortland
Jan 31
PWM2:35 pmPortland
11h 03m
2 stops
SAT12:38 amSan Antonio
$327
Find similar

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 December 1, 2025.
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

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/6

5:45 am-12:10 pm

1 stop5h 25m

Portland

Thu 1/8

12:45 pm-11:05 pm

2 stops11h 20m

$277

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/6

12:15 pm-10:15 pm

2 stops9h 00m

Portland

Thu 1/8

3:30 pm-11:05 pm

2 stops8h 35m

$304

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/6

12:45 pm-10:22 am

1 stop20h 37m

Portland

Sat 1/10

11:02 am-11:52 pm

1 stop13h 50m

$315

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/27

5:30 am-12:03 pm

1 stop5h 33m

Portland

Sat 1/31

2:35 pm-10:10 pm

1 stop8h 35m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/27

5:30 am-5:16 pm

2 stops10h 46m

Portland

Sat 1/31

2:35 pm-10:10 pm

1 stop8h 35m

$322

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/27

6:30 am-5:16 pm

2 stops9h 46m

Portland

Sat 1/31

2:35 pm-12:38 am

2 stops11h 03m

$327

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Tue 1/6

5:45 am-12:10 pm

1 stop5h 25m

Portland

Thu 1/8

3:30 pm-9:10 pm

1 stop6h 40m

$331

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 1/22

5:45 am-2:55 pm

1 stop8h 10m

Portland

Tue 1/27

12:45 pm-9:10 pm

1 stop9h 25m

$382

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 1/22

10:15 am-10:15 pm

2 stops11h 00m

Portland

Tue 1/27

3:30 pm-9:10 pm

1 stop6h 40m

$387

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 1/22

12:25 pm-10:15 pm

2 stops8h 50m

Portland

Tue 1/27

12:45 pm-11:05 pm

2 stops11h 20m

$392

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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 cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from San Antonio is in March. Flight prices, which tend to average around $293, 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 March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $350.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from San Antonio is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $426. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $601.

What is the cheapest time of day to depart on your flight to Portland, Maine?

At noon is the cheapest time of day to fly from San Antonio to Portland, Maine when you can find flight prices for as low as $436. Flying to Portland, Maine at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $514. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from San Antonio for as low as $218 on momondo.

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

As of December 2025, prices for San Antonio to Portland, Maine flights are approximately 26% 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

5h 25m

Direct flights

None
The fastest flight from San Antonio to Portland, Maine takes 5h 25m
There are no direct flights from San Antonio to Portland, Maine. There are no popular flight routes from San Antonio to Portland, Maine.
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  • How far is San Antonio to Portland by plane?

    Portland is 1835.4 mi away from San Antonio. Flights usually cover this in 5h 25m, 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
American AirlinesPriceFrom $172Free CancellationRating
7.2
11,039 reviews
Search American Airlines flights
DeltaPriceFrom $296Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $311Free CancellationRating
7.4
9,056 reviews
Search United Airlines flights
SouthwestPriceFrom $347Free CancellationRating
8.0
4,252 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
Conway
Freeport
Lewiston
Bartlett
Brunswick
Auburn
Gorham
Windham
Intervale
Oxford
Bath
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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