Cheap flights from San Antonio to Portland from $179

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 9/25. 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 (SAT-PWM)

Cheap round-trip flights

American Airlines Logo
6:35 am - 4:34 pmSAT-PWM
8h 59m1 stop
American Airlines Logo
2:02 pm - 10:36 pmPWM-SAT
9h 34m1 stop
$277American Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 1
United Airlines Logo
12:00 pm - 7:29 pmSAT-PWM
6h 29m1 stop
United Airlines Logo
6:00 am - 3:58 pmPWM-SAT
10h 58m2 stops
$282United Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 1
Delta Logo
11:26 am - 12:11 amSAT-PWM
11h 45m2 stops
Delta Logo
1:40 pm - 11:59 pmPWM-SAT
11h 19m2 stops
$287Delta
Find Deal
Wed, Sep 24 - Wed, Oct 1
Delta Logo
2:55 pm - 10:19 pmSAT-PWM
6h 24m1 stop
Delta Logo
5:42 am - 3:56 pmPWM-SAT
11h 14m2 stops
$292Delta
Find Deal
Sat, Oct 18 - Wed, Oct 22
American Airlines Logo
6:35 am - 4:34 pmSAT-PWM
8h 59m1 stop
American Airlines Logo
5:21 pm - 10:56 pmPWM-SAT
6h 35m1 stop
$295American Airlines
Find Deal
Thu, Oct 2 - Wed, Oct 8
United Airlines Logo
12:50 pm - 11:13 pmSAT-PWM
9h 23m1 stop
United Airlines Logo
6:00 am - 11:37 amPWM-SAT
6h 37m1 stop
$309United Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 7
United Airlines Logo
12:50 pm - 11:13 pmSAT-PWM
9h 23m1 stop
United Airlines Logo
6:14 am - 11:58 amPWM-SAT
6h 44m1 stop
$312United Airlines
Find Deal
Thu, Oct 2 - Wed, Oct 8
United Airlines Logo
1:05 pm - 11:13 pmSAT-PWM
9h 08m2 stops
United Airlines Logo
6:14 am - 11:58 amPWM-SAT
6h 44m1 stop
$317United Airlines
Find Deal
Thu, Oct 2 - Wed, Oct 8
Delta Logo
11:26 am - 11:03 pmSAT-PWM
10h 37m2 stops
Delta Logo
5:42 am - 3:56 pmPWM-SAT
11h 14m2 stops
$328Delta
Find Deal
Wed, Oct 1 - Tue, Oct 7
American Airlines Logo
7:08 am - 4:17 pmSAT-PWM
8h 09m1 stop
American Airlines Logo
3:56 pm - 9:54 pmPWM-SAT
6h 58m1 stop
$347American Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 29

United Airlines flights from San Antonio to Portland, Maine

Our best United Airlines deals on San Antonio to Portland, Maine flight tickets
United Airlines
Sep 24
SAT12:00 pmSan Antonio
6h 29m
1 stop
PWM7:29 pmPortland
Oct 1
PWM6:00 amPortland
10h 58m
2 stops
SAT3:58 pmSan Antonio
United Airlines
Oct 1
SAT12:50 pmSan Antonio
9h 23m
1 stop
PWM11:13 pmPortland
Oct 7
PWM6:00 amPortland
6h 37m
1 stop
SAT11:37 amSan Antonio
United Airlines
Oct 2
SAT12:50 pmSan Antonio
9h 23m
1 stop
PWM11:13 pmPortland
Oct 8
PWM6:14 amPortland
6h 44m
1 stop
SAT11:58 amSan Antonio

Delta flights from San Antonio to Portland, Maine

Our best Delta deals on San Antonio to Portland, Maine flight tickets
Delta
Sep 24
SAT11:26 amSan Antonio
11h 45m
2 stops
PWM12:11 amPortland
Oct 1
PWM1:40 pmPortland
11h 19m
2 stops
SAT11:59 pmSan Antonio
Delta
Oct 18
SAT2:55 pmSan Antonio
6h 24m
1 stop
PWM10:19 pmPortland
Oct 22
PWM5:42 amPortland
11h 14m
2 stops
SAT3:56 pmSan Antonio
Delta
Oct 1
SAT11:26 amSan Antonio
10h 37m
2 stops
PWM11:03 pmPortland
Oct 7
PWM5:42 amPortland
11h 14m
2 stops
SAT3:56 pmSan Antonio

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 August 28, 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

Wed 9/24

6:35 am-4:34 pm

1 stop8h 59m

Portland

Wed 10/1

2:02 pm-10:36 pm

1 stop9h 34m

$277

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 9/24

12:00 pm-7:29 pm

1 stop6h 29m

Portland

Wed 10/1

6:00 am-3:58 pm

2 stops10h 58m

$282

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 9/24

11:26 am-12:11 am

2 stops11h 45m

Portland

Wed 10/1

1:40 pm-11:59 pm

2 stops11h 19m

$287

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Sat 10/18

2:55 pm-10:19 pm

1 stop6h 24m

Portland

Wed 10/22

5:42 am-3:56 pm

2 stops11h 14m

$292

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 10/2

6:35 am-4:34 pm

1 stop8h 59m

Portland

Wed 10/8

5:21 pm-10:56 pm

1 stop6h 35m

$295

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 10/1

12:50 pm-11:13 pm

1 stop9h 23m

Portland

Tue 10/7

6:00 am-11:37 am

1 stop6h 37m

$309

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 10/2

12:50 pm-11:13 pm

1 stop9h 23m

Portland

Wed 10/8

6:14 am-11:58 am

1 stop6h 44m

$312

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Thu 10/2

1:05 pm-11:13 pm

2 stops9h 08m

Portland

Wed 10/8

6:14 am-11:58 am

1 stop6h 44m

$317

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Wed 10/1

11:26 am-11:03 pm

2 stops10h 37m

Portland

Tue 10/7

5:42 am-3:56 pm

2 stops11h 14m

$328

San AntonioPortland

SAT - PWM

SATPWM

San Antonio

Mon 9/22

7:08 am-4:17 pm

1 stop8h 09m

Portland

Mon 9/29

3:56 pm-9:54 pm

1 stop6h 58m

$347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 $205, 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 have San Antonio to Portland, Maine flight prices changed over time?

As of August 2025, prices for San Antonio to Portland, Maine flights are approximately 44% cheaper 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

Direct flights

None
There are no direct flights from San Antonio to Portland, Maine. There are no popular flight routes 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 5h 49m, 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
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $296Free CancellationRating
7.9
7,977 reviews
Search Delta flights
SouthwestPriceFrom $347Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $356Free CancellationRating
7.4
8,944 reviews
Search United Airlines 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
Gorham
Brunswick
Auburn
Intervale
Windham
Bath
Oxford
Georgetown
Tamworth
Falmouth

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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1 adult
Tue 9/2
Tue 9/9

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