Cheap flights from San Antonio to Portugal from $258
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 Portugal departing on 7/22. 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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How to get the cheapest flight ticket from San Antonio to Portugal
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 Portugal?
The cheapest month to fly to Portugal from San Antonio is in March. Flight prices, which tend to average around $734, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from San Antonio during February instead. Flights to Portugal in February, while not as cheap as those in March, still average around $797.
What is the cheapest day to depart on your flight to Portugal?
According to our data, Thursday is the cheapest day to fly to Portugal from San Antonio. The lowest ticket price found for a Thursday departure recently was $939. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,226.
What is the cheapest time of day to depart on your flight to Portugal?
Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from San Antonio to Portugal during this time can be as low as $822. In the morning is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,206 per ticket.
How far in advance should I book a flight to Portugal?
You are more likely to see cheaper flights to Portugal from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,053 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from San Antonio for as low as $919 on momondo.
What is the cheapest airline that flies from San Antonio to Portugal?
United Airlines, American Airlines, and Air Canada are the most popular carriers operating from San Antonio to Portugal
What airlines fly to Portugal?
United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to Portugal from San Antonio according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 10 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.
Cheap San Antonio to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to Portugal
When did momondo last update prices for flights from San Antonio Airport to Portugal?
Prices for flights from San Antonio Airport to Portugal refresh daily.
How many operators does momondo search for flights from San Antonio Airport to Portugal?
As of July 2025, there are 4 operators available to choose from for flights from San Antonio Airport to Portugal.
How old do you have to be to fly from San Antonio Airport to Portugal?
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 Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal 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 Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from San Antonio to Portugal
Compare and see reviews for airlines that fly from San Antonio to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $615 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $635 | Free Cancellation | Rating 8.0 7,974 reviews | |||
| PriceFrom $666 | Free Cancellation | Rating 6.6 7,086 reviews | |||
| PriceFrom $687 | Free Cancellation | Rating 7.4 8,858 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Antonio to Portugal?
It is quick and easy to find San Antonio to Portugal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portugal that suits you.
Can I find flights from San Antonio to Portugal with flexible booking policies on momondo?
Flights from San Antonio to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from San Antonio to Portugal?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Portugal.
I’m not ready to book a flight from San Antonio to Portugal right now. Can momondo alert me if prices change?
Yes. momondo can track prices for San Antonio to Portugal flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.