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Cheap flights from San Antonio to Portugal from $454

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 1/5. 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

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Cheap round-trip flights

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Multiple Airlines Logo
1:00 pm - 9:00 amSAT-LIS
15h 00m1 stop
Multiple Airlines Logo
10:40 am - 12:32 amLIS-SAT
18h 52m2 stops
$460Multiple Airlines
Find Deal
Tue, Mar 10 - Thu, Mar 19
Virgin Atlantic Logo
4:29 pm - 8:00 amSAT-LIS
33h 31m2 stops
Virgin Atlantic Logo
10:00 am - 12:38 amLIS-SAT
20h 38m2 stops
$470Virgin Atlantic
Find Deal
Sun, Jan 18 - Mon, Feb 2
KLM Logo
12:55 pm - 8:00 amSAT-LIS
13h 05m1 stop
KLM Logo
11:25 am - 12:38 amLIS-SAT
19h 13m2 stops
$475KLM
Find Deal
Sun, Jan 18 - Mon, Feb 2
Virgin Atlantic Logo
12:55 pm - 8:00 amSAT-LIS
13h 05m1 stop
Virgin Atlantic Logo
10:00 am - 12:38 amLIS-SAT
20h 38m2 stops
$476Virgin Atlantic
Find Deal
Sun, Jan 18 - Mon, Feb 2
Delta Logo
5:20 am - 8:00 amSAT-LIS
20h 40m2 stops
Delta Logo
5:00 am - 8:25 pmLIS-SAT
21h 25m2 stops
$487Delta
Find Deal
Sun, Jan 18 - Mon, Feb 2
Delta Logo
12:55 pm - 8:00 amSAT-LIS
13h 05m1 stop
Delta Logo
11:25 am - 8:25 pmLIS-SAT
39h 00m2 stops
$493Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2
Virgin Atlantic Logo
12:55 pm - 8:00 amSAT-LIS
13h 05m1 stop
Virgin Atlantic Logo
10:00 am - 11:35 amLIS-SAT
31h 35m1 stop
$495Virgin Atlantic
Find Deal
Sun, Jan 18 - Mon, Feb 2
Delta Logo
12:55 pm - 8:00 amSAT-LIS
13h 05m1 stop
Delta Logo
11:25 am - 12:38 amLIS-SAT
19h 13m2 stops
$496Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2
Delta Logo
12:55 pm - 3:10 pmSAT-LIS
20h 15m2 stops
Delta Logo
11:25 am - 12:38 amLIS-SAT
19h 13m2 stops
$499Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2
Delta Logo
6:30 am - 8:00 amSAT-LIS
19h 30m2 stops
Delta Logo
11:25 am - 12:38 amLIS-SAT
19h 13m2 stops
$500Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2

United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Mar 10
SAT12:17 pmSan Antonio
16h 58m
1 stop
LIS10:15 amLisbon Humberto Delgado
Mar 19
LIS11:55 amLisbon Humberto Delgado
13h 58m
1 stop
SAT8:53 pmSan Antonio
$544
Find similar
United Airlines
Feb 11
SAT9:50 amSan Antonio
17h 30m
2 stops
LIS9:20 amLisbon Humberto Delgado
Feb 27
LIS5:00 amLisbon Humberto Delgado
22h 15m
2 stops
SAT9:15 pmSan Antonio
$567
Find similar
United Airlines
Jan 8
SAT7:00 amSan Antonio
20h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 15
LIS11:20 amLisbon Humberto Delgado
39h 36m
2 stops
SAT8:56 pmSan Antonio
$602
Find similar

KLM flights from San Antonio to Portugal

Our best KLM deals on San Antonio to Portugal flight tickets
KLM
Jan 18
SAT12:55 pmSan Antonio
13h 05m
1 stop
LIS8:00 amLisbon Humberto Delgado
Feb 2
LIS11:25 amLisbon Humberto Delgado
19h 13m
2 stops
SAT12:38 amSan Antonio
$475
Find similar
KLM
Feb 4
SAT12:55 pmSan Antonio
13h 05m
1 stop
LIS8:00 amLisbon Humberto Delgado
Feb 11
LIS5:00 amLisbon Humberto Delgado
18h 22m
2 stops
SAT5:22 pmSan Antonio
$593
Find similar
KLM
Mar 10
SAT1:00 pmSan Antonio
15h 00m
1 stop
LIS9:00 amLisbon Humberto Delgado
Mar 26
LIS10:00 amLisbon Humberto Delgado
30h 23m
1 stop
SAT11:23 amSan Antonio
$612
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 November 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 3/10

1:00 pm-9:00 am

1 stop15h 00m

Lisbon Humberto Delgado

Thu 3/19

10:40 am-12:32 am

2 stops18h 52m

$460

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

4:29 pm-8:00 am

2 stops33h 31m

Lisbon Humberto Delgado

Mon 2/2

10:00 am-12:38 am

2 stops20h 38m

$470

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-12:38 am

2 stops19h 13m

$475

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 2/2

10:00 am-12:38 am

2 stops20h 38m

$476

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

5:20 am-8:00 am

2 stops20h 40m

Lisbon Humberto Delgado

Mon 2/2

5:00 am-8:25 pm

2 stops21h 25m

$487

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 1/29

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-8:25 pm

2 stops39h 00m

$493

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 2/2

10:00 am-11:35 am

1 stop31h 35m

$495

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 1/29

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-12:38 am

2 stops19h 13m

$496

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 1/29

12:55 pm-3:10 pm

2 stops20h 15m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-12:38 am

2 stops19h 13m

$499

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 1/29

6:30 am-8:00 am

2 stops19h 30m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-12:38 am

2 stops19h 13m

$500

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $598, 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 $679.

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 $962 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 $913 on momondo.

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

You could potentially save up to 23% 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

Fastest flight time

16h 58m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 16h 58m
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
7,539 reviews
Search British Airways flights
American AirlinesPriceFrom $607Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
DeltaPriceFrom $629Free CancellationRating
7.9
7,998 reviews
Search Delta flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
IberiaPriceFrom $765Free CancellationRating
7.0
3,034 reviews
Search Iberia flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,594 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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