$328 Find Cheap Flights from San Antonio to Portugal - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheap Flights from San Antonio to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lisbon
Lisbon1 stop$717
Porto
Porto1 stop$807
Lisbon
Lisbon1 stop$717
Porto
Porto1 stop$807

Price, demand and travel trends for San Antonio to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from San Antonio to Portugal cheaper or more expensive than last year?

Fares from San Antonio to Portugal are running about 16% lower than they were around this time last year, averaging $849 round-trip.

What are the cheapest fares from San Antonio to Portugal right now?

Here are the cheapest round-trip fares from San Antonio to Portugal on KAYAK in the last week:

• Lisbon Humberto Delgado (LIS) from $717
• Faro (FAO) from $763
• Funchal Madeira (FNC) from $814
• Porto (OPO) from $815

What’s the cheapest month to fly from San Antonio to Portugal?

January is the cheapest time of year to fly, with average fares of $692. Prices are highest in June, when average flight costs increase to around $1,348.

Which airport in Portugal is the cheapest to fly to from San Antonio?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Portugal are:

• Porto (OPO) from $880
• Lisbon Humberto Delgado (LIS) from $901
• Faro (FAO) from $958

What’s the cheapest day to fly from San Antonio to Portugal?

Thursday tends to be the cheapest day to fly from San Antonio to Portugal, while Friday is the most expensive. Fares run about 42% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from San Antonio to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the evening with average prices of $762. The morning is the most expensive time to fly, with average prices of $958.

Key details for San Antonio to Portugal flights

Low season

November

Cheapest flight

$328
Beat the crowds with an average 43% drop in travelers.
The most popular month to fly with an average 46% increase in travelers.
One-way flight from San Antonio to Porto

Your San Antonio to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from San Antonio to Portugal?

    Yes. Fares from San Antonio to Portugal are low right now. As a rule of thumb, a round-trip under $725 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from San Antonio to Portugal?

    Over the past 12 months, round-trip fares from San Antonio to Portugal have ranged from $725 to $1,192.

  • What are the main airports serving Portugal?

    Portugal has 15 airports. The three busiest are Lisbon Humberto Delgado (LIS) (66% of arrivals), Porto (OPO) (17%) and Faro (FAO) (10%).

  • What airlines fly nonstop from San Antonio to Portugal?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from San Antonio to Portugal. One-stop options include:

    • Delta
    • United Airlines
    • American Airlines

  • Which cabin classes are available on flights from San Antonio to Portugal?

    On flights from San Antonio to Portugal you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Praça do Marquês de Pombal

Your guide to booking San Antonio to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for January when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Friday cost about 42% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Porto (OPO) is the cheapest airport to fly into from San Antonio. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.

Reviews of the top airlines flying from San Antonio to Portugal

 
Need help choosing which airline to fly with from San Antonio to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10366 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
6.7Food
8.1Crew
Airline reviews

Just having a little bit more legroom would've been nice.

8.0 ExcellentIsabella, Sep 2026
Read more United Airlines reviews

Just having a little bit more legroom would've been nice.

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Nothing they cancelled my connection and couldn't get me on a flight for 3 more days

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Flight DFW > CVG was delayed with late notice. My flight into DFW from CVG (previous) was delayed by multiple hours with very poor communication & advance notice. And having the flight attendants announce the credit card during the flight when I can't opt felt very insulting and cheap. I already paid you for the flight, you shouldn't be able to take my time and attention hostage for further advertising.

It was freezing in the cabin. That's on me to be better prepared in the future.

They delayed my flight 6 hours and gave me $12 for food that I couldn't use it anywhere.

Staff are polite,and even offer us to tag our baggages upon seeing us from the entry

There was an issue with engine, flight delayed for several hours, lost a connection

Had to find alternative flights because of AA lateness and bad planning

When we landed, there was only one gate agent to handle three planes, including retrieval of carry on luggage. I was stuck in the jet way waiting on my carry on for almost 20-30 minutes. NOT GOOD

Deplaning time. Having to wait 10 to 25 minutes after boarding to leave the gate. Having to wait 10 minutes to park at the gate to deplane.☹️

When you pay for Premium Economy on an 787 and you’re promised amenities for the extra money, you expect them to work. They didn’t. USB connector wouldn’t charge continuously. 120v outlet wouldn’t hold anything you plugged into it. The adapter would just fall out. The noise canceling headphones stopped noise cancelling in the first 15 minutes for EVERYONE. No one on the plane knew how to fix it so I couldn’t listen to any movies. I just put in my AirPods and went to sleep. Very unhappy with the crappy Panasonic entertainment system. I won’t buy premium again.

My first time flying American Airlines, my first flight to CLT was wonderful and flight attendants was nice and had great customer service. My second flight from CLT to NY was very delayed due to whatever reason the crew was not greeting other than that I’m rate 8 .

More options for your flight from San Antonio to Portugal

Complete your trip to Portugal with a hotel stay or car rental