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Cheap flights from San Antonio to Portugal from $270

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 12/8. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:05 am - 9:20 amSAT-LIS
20h 15m2 stops
Multiple Airlines Logo
5:00 am - 10:27 pmLIS-SAT
23h 27m2 stops
$552Multiple Airlines
Find Deal
Tue, Nov 18 - Tue, Nov 25
Multiple Airlines Logo
7:20 am - 9:20 amSAT-LIS
20h 00m2 stops
Multiple Airlines Logo
6:10 am - 8:53 pmLIS-SAT
20h 43m2 stops
$554Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
7:20 am - 10:15 amSAT-LIS
20h 55m1 stop
United Airlines Logo
6:10 am - 11:47 pmLIS-SAT
23h 37m2 stops
$563United Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 24
Delta Logo
2:15 pm - 8:00 amSAT-LIS
11h 45m1 stop
Delta Logo
5:00 am - 9:53 pmLIS-SAT
22h 53m2 stops
$565Delta
Find Deal
Mon, Dec 8 - Wed, Dec 24
Delta Logo
2:15 pm - 8:00 amSAT-LIS
11h 45m1 stop
Delta Logo
11:15 am - 10:11 amLIS-SAT
28h 56m2 stops
$567Delta
Find Deal
Sun, Dec 7 - Tue, Dec 23
Delta Logo
4:35 pm - 5:30 pmSAT-LIS
18h 55m2 stops
Delta Logo
5:00 am - 9:53 pmLIS-SAT
22h 53m2 stops
$569Delta
Find Deal
Mon, Dec 8 - Wed, Dec 24
United Airlines Logo
7:20 am - 10:15 amSAT-LIS
20h 55m1 stop
United Airlines Logo
11:55 am - 8:24 pmLIS-SAT
14h 29m1 stop
$575United Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 24
Lufthansa Logo
12:40 pm - 8:10 amSAT-LIS
13h 30m1 stop
Lufthansa Logo
5:00 am - 10:27 pmLIS-SAT
23h 27m2 stops
$590Lufthansa
Find Deal
Tue, Nov 18 - Tue, Nov 25
Lufthansa Logo
1:23 pm - 1:20 pmSAT-LIS
17h 57m2 stops
Lufthansa Logo
3:55 pm - 10:27 pmLIS-SAT
36h 32m2 stops
$605Lufthansa
Find Deal
Mon, Nov 10 - Mon, Nov 24
British Airways Logo
6:50 pm - 5:45 pmSAT-LIS
17h 55m2 stops
British Airways Logo
6:40 pm - 5:42 pmLIS-SAT
28h 02m2 stops
$700British Airways
Find Deal
Sun, Mar 8 - Sat, Mar 14

United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Dec 10
SAT7:20 amSan Antonio
20h 55m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 24
LIS6:10 amLisbon Humberto Delgado
23h 37m
2 stops
SAT11:47 pmSan Antonio
$563
Find similar
United Airlines
Dec 8
SAT7:20 amSan Antonio
20h 55m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 24
LIS11:55 amLisbon Humberto Delgado
14h 29m
1 stop
SAT8:24 pmSan Antonio
$575
Find similar
United Airlines
Mar 10
SAT2:15 pmSan Antonio
15h 00m
2 stops
LIS10:15 amLisbon Humberto Delgado
Mar 26
LIS11:55 amLisbon Humberto Delgado
27h 53m
2 stops
SAT10:48 amSan Antonio
$579
Find similar

Delta flights from San Antonio to Portugal

Our best Delta deals on San Antonio to Portugal flight tickets
Delta
Dec 8
SAT2:15 pmSan Antonio
11h 45m
1 stop
LIS8:00 amLisbon Humberto Delgado
Dec 24
LIS5:00 amLisbon Humberto Delgado
22h 53m
2 stops
SAT9:53 pmSan Antonio
$565
Find similar
Delta
Dec 7
SAT6:30 amSan Antonio
20h 25m
2 stops
LIS8:55 amLisbon Humberto Delgado
Dec 24
LIS11:15 amLisbon Humberto Delgado
17h 52m
2 stops
SAT11:07 pmSan Antonio
$567
Find similar
Delta
Dec 8
SAT4:35 pmSan Antonio
18h 55m
2 stops
LIS5:30 pmLisbon Humberto Delgado
Dec 24
LIS5:00 amLisbon Humberto Delgado
22h 53m
2 stops
SAT9:53 pmSan Antonio
$569
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Portugal 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 October 26, 2025.
Use the filters below to find and compare flights from San Antonio to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 11/18

7:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Tue 11/25

5:00 am-10:27 pm

2 stops23h 27m

$552

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 12/9

7:20 am-9:20 am

2 stops20h 00m

Lisbon Humberto Delgado

Tue 12/16

6:10 am-8:53 pm

2 stops20h 43m

$554

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 12/10

7:20 am-10:15 am

1 stop20h 55m

Lisbon Humberto Delgado

Wed 12/24

6:10 am-11:47 pm

2 stops23h 37m

$563

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 12/8

2:15 pm-8:00 am

1 stop11h 45m

Lisbon Humberto Delgado

Wed 12/24

5:00 am-9:53 pm

2 stops22h 53m

$565

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 12/7

2:15 pm-8:00 am

1 stop11h 45m

Lisbon Humberto Delgado

Tue 12/23

11:15 am-10:11 am

2 stops28h 56m

$567

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 12/8

4:35 pm-5:30 pm

2 stops18h 55m

Lisbon Humberto Delgado

Wed 12/24

5:00 am-9:53 pm

2 stops22h 53m

$569

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 12/8

7:20 am-10:15 am

1 stop20h 55m

Lisbon Humberto Delgado

Wed 12/24

11:55 am-8:24 pm

1 stop14h 29m

$575

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 11/18

12:40 pm-8:10 am

1 stop13h 30m

Lisbon Humberto Delgado

Tue 11/25

5:00 am-10:27 pm

2 stops23h 27m

$590

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 11/10

1:23 pm-1:20 pm

2 stops17h 57m

Lisbon Humberto Delgado

Mon 11/24

3:55 pm-10:27 pm

2 stops36h 32m

$605

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 3/8

6:50 pm-5:45 pm

2 stops17h 55m

Lisbon Humberto Delgado

Sat 3/14

6:40 pm-5:42 pm

2 stops28h 02m

$700

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

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 January. Flight prices, which tend to average around $741, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from San Antonio during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $767.

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 $989 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 $745 on momondo.

Can stopping save me money on San Antonio to Portugal flights?

You could potentially save up to 35% on your flight if you consider stops on a San Antonio to Portugal flight.

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

Direct flights

None
There are no direct flights from San Antonio to Portugal. There are no popular flight routes from San Antonio to Portugal.
Search flight deals

  • 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?

  • 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
British AirwaysPriceFrom $558Free CancellationRating
6.7
7,476 reviews
Search British Airways flights
American AirlinesPriceFrom $607Free CancellationRating
7.2
11,030 reviews
Search American Airlines flights
DeltaPriceFrom $629Free CancellationRating
7.9
7,997 reviews
Search Delta flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
IberiaPriceFrom $765Free CancellationRating
7.0
3,000 reviews
Search Iberia flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,532 reviews
Search Lufthansa flights

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.

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Find better results for your trip to Portugal

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