Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland, Maine to San Antonio from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to San Antonio departing on 2/20. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland, Maine to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:42 pm - 11:08 pm
PWM
-
SAT
7h 26m
1 stop
Delta Logo
2:27 pm - 11:18 pm
SAT
-
PWM
7h 51m
1 stop
$317Delta
Wed, May 6 - Wed, May 13
Delta Logo
6:00 am - 3:23 pm
PWM
-
SAT
10h 23m
2 stops
Delta Logo
2:27 pm - 11:18 pm
SAT
-
PWM
7h 51m
1 stop
$322Delta
Wed, May 6 - Wed, May 13
Delta Logo
5:21 am - 3:49 pm
PWM
-
SAT
11h 28m
2 stops
Delta Logo
11:49 am - 11:18 pm
SAT
-
PWM
10h 29m
2 stops
$327Delta
Wed, May 6 - Wed, May 13
Breeze Airways Logo
5:01 pm - 9:05 am
PWM
-
SAT
17h 04m
1 stop
Breeze Airways Logo
11:30 am - 4:16 pm
SAT
-
PWM
27h 46m
2 stops
$329Breeze Airways
Wed, May 20 - Fri, May 29
Multiple Airlines Logo
5:01 pm - 9:05 am
PWM
-
SAT
17h 04m
1 stop
Multiple Airlines Logo
10:26 am - 7:16 pm
SAT
-
PWM
31h 50m
2 stops
$348Multiple Airlines
Wed, May 20 - Sat, May 30
Multiple Airlines Logo
5:01 pm - 8:15 am
PWM
-
SAT
16h 14m
1 stop
Multiple Airlines Logo
10:26 am - 2:26 pm
SAT
-
PWM
27h 00m
2 stops
$355Multiple Airlines
Wed, May 6 - Wed, May 13
Delta Logo
6:25 am - 12:25 pm
PWM
-
SAT
7h 00m
1 stop
Delta Logo
5:20 am - 11:57 am
SAT
-
PWM
5h 37m
1 stop
$367Delta
Sun, May 10 - Thu, May 14
Delta Logo
4:48 pm - 12:38 am
PWM
-
SAT
8h 50m
2 stops
Delta Logo
5:10 am - 12:09 pm
SAT
-
PWM
5h 59m
1 stop
$372Delta
Tue, Mar 10 - Tue, Mar 17
Delta Logo
4:48 pm - 12:38 am
PWM
-
SAT
8h 50m
2 stops
Delta Logo
5:10 am - 1:50 pm
SAT
-
PWM
7h 40m
2 stops
$378Delta
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
5:01 pm - 9:05 am
PWM
-
SAT
17h 04m
1 stop
Multiple Airlines Logo
10:26 am - 9:12 am
SAT
-
PWM
21h 46m
2 stops
$394Multiple Airlines
Wed, May 20 - Thu, May 28

Delta flights from Portland, Maine to San Antonio

Our best Delta deals on Portland, Maine to San Antonio flight tickets
Delta
May 6
PWM4:42 pmPortland
7h 26m
1 stop
SAT11:08 pmSan Antonio
May 13
SAT2:27 pmSan Antonio
7h 51m
1 stop
PWM11:18 pmPortland
$317
Delta
May 6
PWM6:00 amPortland
10h 23m
2 stops
SAT3:23 pmSan Antonio
May 13
SAT2:27 pmSan Antonio
7h 51m
1 stop
PWM11:18 pmPortland
$322
Delta
May 6
PWM5:21 amPortland
11h 28m
2 stops
SAT3:49 pmSan Antonio
May 13
SAT11:49 amSan Antonio
10h 29m
2 stops
PWM11:18 pmPortland
$327

American Airlines flights from Portland, Maine to San Antonio

Our best American Airlines deals on Portland, Maine to San Antonio flight tickets
American Airlines
Apr 9
PWM5:51 pmPortland
7h 08m
1 stop
SAT11:59 pmSan Antonio
Apr 11
SAT1:19 pmSan Antonio
9h 08m
1 stop
PWM11:27 pmPortland
$467
American Airlines
Apr 9
PWM5:51 pmPortland
7h 08m
1 stop
SAT11:59 pmSan Antonio
Apr 11
SAT7:05 amSan Antonio
6h 32m
1 stop
PWM2:37 pmPortland
$491
American Airlines
May 16
PWM10:54 amPortland
7h 41m
1 stop
SAT5:35 pmSan Antonio
May 22
SAT8:00 amSan Antonio
7h 46m
1 stop
PWM4:46 pmPortland
$513

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to San Antonio 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 February 7, 2026.
Use the filters below to find and compare flights from Portland, Maine to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/6

4:42 pm-11:08 pm

1 stop7h 26m

San Antonio

Wed 5/13

2:27 pm-11:18 pm

1 stop7h 51m

$317

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/6

6:00 am-3:23 pm

2 stops10h 23m

San Antonio

Wed 5/13

2:27 pm-11:18 pm

1 stop7h 51m

$322

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/6

5:21 am-3:49 pm

2 stops11h 28m

San Antonio

Wed 5/13

11:49 am-11:18 pm

2 stops10h 29m

$327

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/20

5:01 pm-9:05 am

1 stop17h 04m

San Antonio

Fri 5/29

11:30 am-4:16 pm

2 stops27h 46m

$329

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/20

5:01 pm-9:05 am

1 stop17h 04m

San Antonio

Sat 5/30

10:26 am-7:16 pm

2 stops31h 50m

$348

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/6

5:01 pm-8:15 am

1 stop16h 14m

San Antonio

Wed 5/13

10:26 am-2:26 pm

2 stops27h 00m

$355

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Sun 5/10

6:25 am-12:25 pm

1 stop7h 00m

San Antonio

Thu 5/14

5:20 am-11:57 am

1 stop5h 37m

$367

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Tue 3/10

4:48 pm-12:38 am

2 stops8h 50m

San Antonio

Tue 3/17

5:10 am-12:09 pm

1 stop5h 59m

$372

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Tue 3/10

4:48 pm-12:38 am

2 stops8h 50m

San Antonio

Tue 3/17

5:10 am-1:50 pm

2 stops7h 40m

$378

PortlandSan Antonio

PWM - SAT

PWMSAT

Portland

Wed 5/20

5:01 pm-9:05 am

1 stop17h 04m

San Antonio

Thu 5/28

10:26 am-9:12 am

2 stops21h 46m

$394

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to San Antonio from

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

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 San Antonio?

If you aren’t able to travel during the month of July, then book flights to San Antonio from Portland, Maine during June instead. Flights to San Antonio in June, while not as cheap as those in July, still average around $416.

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

As of February 2026, prices for Portland, Maine to San Antonio flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Portland, Maine to San Antonio

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

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

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

Fastest flight time

7h 26m

Direct flights

None
The fastest flight from Portland, Maine to San Antonio takes 7h 26m
There are no direct flights from Portland, Maine to San Antonio. There are no popular flight routes from Portland, Maine to San Antonio.
Search flight deals

  • How far is Portland to San Antonio by plane?

    The distance between Portland and San Antonio is about 1835.4 mi. In terms of flight time, this usually takes a little over 7h 26m.

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

    Prices for flights from Portland Airport to San Antonio Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Antonio Airport.

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

    The travel and health documents you'll need for your trip to San Antonio 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 San Antonio 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 Portland, Maine to San Antonio?

Best airlines flying from Portland, Maine to San Antonio

Compare and see reviews for airlines that fly from Portland, Maine to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $175Free CancellationRating
7.9
8,162 reviews
Search Delta flights
American AirlinesPriceFrom $234Free CancellationRating
7.2
11,248 reviews
Search American Airlines flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
9,245 reviews
Search United Airlines flights
SouthwestPriceFrom $358Free CancellationRating
8.0
4,280 reviews
Search Southwest flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Pleasanton
Schertz

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to San Antonio. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Portland to San Antonio on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to San Antonio from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to San Antonio from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 3/9
Mon 3/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States