Cheap flights from Portland, Maine to San Antonio from $113
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 5/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.Find the cheapest flights from Portland, Maine to San Antonio
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Southwest flights from Portland, Maine to San Antonio
Our best Southwest deals on Portland, Maine to San Antonio flight tickets
Delta flights from Portland, Maine to San Antonio
Our best Delta deals on Portland, Maine to San Antonio flight tickets
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 June, then book flights to San Antonio from Portland, Maine during July instead. Flights to San Antonio in July, while not as cheap as those in June, still average around $420.
What is the cheapest day to depart on your flight to San Antonio?
The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $426. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $666.
What is the cheapest time of day to depart on your flight to San Antonio?
According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Portland, Maine to San Antonio in the afternoon for as low as $446. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly at noon, with an average ticket price of $611. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to San Antonio?
You are more likely to see cheaper flights to San Antonio from Portland, Maine when booking 22 weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $495 when searching 22 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Portland, Maine for as low as $374 on momondo.
What is the cheapest airline that flies from Portland to San Antonio?
Frontier, Delta, and Southwest are the most popular carriers operating from Portland to San Antonio
What airlines fly to San Antonio?
Delta, American Airlines and JetBlue are the top three most popular airlines that fly to San Antonio from Portland, Maine according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 7 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland, Maine to San Antonio
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
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 6h 05m.
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?
There are 4 operators available for flights from Portland Airport to San Antonio Airport as of April 2025.
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?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to San Antonio is Southwest, representing 32% of all bookings. The subsequent popular airlines are Delta at 28%, United Airlines at 21%, and American Airlines at 19%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $297 | Free Cancellation | Rating 8.0 7,897 reviews | |||
| PriceFrom $336 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $346 | Free Cancellation | Rating 7.4 8,619 reviews | |||
| PriceFrom $366 | Free Cancellation | Rating 8.0 4,275 reviews |
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsWhy 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.