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Cheap flights from San Antonio to Portugal from $402

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 3/9. 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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Find the cheapest flights from San Antonio to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 am - 9:05 am
SAT
-
LIS
17h 35m2 stops
Multiple Airlines Logo
4:10 pm - 7:15 pm
LIS
-
SAT
33h 05m2 stops
$487Multiple Airlines
Sun, Jan 18 - Sat, Jan 31
United Airlines Logo
5:59 pm - 8:55 am
SAT
-
LIS
32h 56m2 stops
United Airlines Logo
11:20 am - 11:12 pm
LIS
-
SAT
41h 52m2 stops
$490United Airlines
Fri, Feb 6 - Sat, Feb 14
Delta Logo
12:55 pm - 8:00 am
SAT
-
LIS
13h 05m1 stop
Delta Logo
11:25 am - 12:38 am
LIS
-
SAT
19h 13m2 stops
$497Delta
Sun, Jan 18 - Sat, Jan 31
Delta Logo
12:25 pm - 3:10 pm
SAT
-
LIS
20h 45m2 stops
Delta Logo
5:00 am - 10:55 pm
LIS
-
SAT
23h 55m2 stops
$501Delta
Fri, Jan 30 - Fri, Feb 6
Virgin Atlantic Logo
12:55 pm - 8:00 am
SAT
-
LIS
13h 05m1 stop
Virgin Atlantic Logo
10:00 am - 10:10 pm
LIS
-
SAT
18h 10m1 stop
$506Virgin Atlantic
Sun, Jan 18 - Sat, Jan 31
Multiple Airlines Logo
1:37 pm - 8:00 am
SAT
-
LIS
13h 23m2 stops
Multiple Airlines Logo
10:00 am - 12:32 am
LIS
-
SAT
19h 32m2 stops
$511Multiple Airlines
Tue, Mar 10 - Thu, Mar 26
KLM Logo
12:22 pm - 8:00 am
SAT
-
LIS
14h 38m1 stop
KLM Logo
10:00 am - 11:23 am
LIS
-
SAT
30h 23m1 stop
$512KLM
Tue, Mar 10 - Thu, Mar 26
United Airlines Logo
7:25 am - 9:20 am
SAT
-
LIS
19h 55m2 stops
United Airlines Logo
10:15 am - 8:56 pm
LIS
-
SAT
16h 41m2 stops
$517United Airlines
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
7:00 am - 7:55 am
SAT
-
LIS
18h 55m2 stops
Multiple Airlines Logo
11:20 am - 8:43 am
LIS
-
SAT
27h 23m3 stops
$519Multiple Airlines
Thu, Feb 5 - Thu, Feb 19
Air Canada Logo
7:40 am - 7:55 am
SAT
-
LIS
18h 15m3 stops
Air Canada Logo
11:20 am - 8:43 am
LIS
-
SAT
27h 23m3 stops
$526Air Canada
Thu, Feb 5 - Thu, Feb 19

United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Feb 6
SAT5:59 pmSan Antonio
32h 56m
2 stops
LIS8:55 amLisbon Humberto Delgado
Feb 14
LIS11:20 amLisbon Humberto Delgado
41h 52m
2 stops
SAT11:12 pmSan Antonio
$490
Find similar
United Airlines
Jan 23
SAT7:25 amSan Antonio
19h 55m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 27
LIS10:15 amLisbon Humberto Delgado
16h 41m
2 stops
SAT8:56 pmSan Antonio
$517
Find similar
United Airlines
Jan 10
SAT7:20 pmSan Antonio
32h 00m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 20
LIS11:20 amLisbon Humberto Delgado
33h 30m
2 stops
SAT2:50 pmSan Antonio
$562
Find similar

KLM flights from San Antonio to Portugal

Our best KLM deals on San Antonio to Portugal flight tickets
KLM
Mar 10
SAT12:22 pmSan Antonio
14h 38m
1 stop
LIS8:00 amLisbon Humberto Delgado
Mar 26
LIS10:00 amLisbon Humberto Delgado
17h 30m
2 stops
SAT10:30 pmSan Antonio
$511
Find similar
KLM
Mar 10
SAT12:22 pmSan Antonio
14h 38m
1 stop
LIS8:00 amLisbon Humberto Delgado
Mar 26
LIS10:00 amLisbon Humberto Delgado
30h 23m
1 stop
SAT11:23 amSan Antonio
$512
Find similar
KLM
Mar 8
SAT12:22 pmSan Antonio
14h 38m
1 stop
LIS8:00 amLisbon Humberto Delgado
Mar 16
LIS10:00 amLisbon Humberto Delgado
30h 23m
1 stop
SAT11:23 amSan Antonio
$597
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 December 18, 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

Sun 1/18

9:30 am-9:05 am

2 stops17h 35m

Lisbon Humberto Delgado

Sat 1/31

4:10 pm-7:15 pm

2 stops33h 05m

$487

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Fri 2/6

5:59 pm-8:55 am

2 stops32h 56m

Lisbon Humberto Delgado

Sat 2/14

11:20 am-11:12 pm

2 stops41h 52m

$490

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Sat 1/31

11:25 am-12:38 am

2 stops19h 13m

$497

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Fri 1/30

12:25 pm-3:10 pm

2 stops20h 45m

Lisbon Humberto Delgado

Fri 2/6

5:00 am-10:55 pm

2 stops23h 55m

$501

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/18

12:55 pm-8:00 am

1 stop13h 05m

Lisbon Humberto Delgado

Sat 1/31

10:00 am-10:10 pm

1 stop18h 10m

$506

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 3/10

1:37 pm-8:00 am

2 stops13h 23m

Lisbon Humberto Delgado

Thu 3/26

10:00 am-12:32 am

2 stops19h 32m

$511

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 3/10

12:22 pm-8:00 am

1 stop14h 38m

Lisbon Humberto Delgado

Thu 3/26

10:00 am-11:23 am

1 stop30h 23m

$512

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Fri 1/23

7:25 am-9:20 am

2 stops19h 55m

Lisbon Humberto Delgado

Tue 1/27

10:15 am-8:56 pm

2 stops16h 41m

$517

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 2/5

7:00 am-7:55 am

2 stops18h 55m

Lisbon Humberto Delgado

Thu 2/19

11:20 am-8:43 am

3 stops27h 23m

$519

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Thu 2/5

7:40 am-7:55 am

3 stops18h 15m

Lisbon Humberto Delgado

Thu 2/19

11:20 am-8:43 am

3 stops27h 23m

$526

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 November instead. Flights to Portugal in November, while not as cheap as those in January, still average around $720.

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 $969 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 $565 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

14h 27m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 14h 27m
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
7,586 reviews
Search British Airways flights
DeltaPriceFrom $581Free CancellationRating
7.9
8,008 reviews
Search Delta flights
American AirlinesPriceFrom $615Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $659Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
IberiaPriceFrom $765Free CancellationRating
7.0
3,054 reviews
Search Iberia flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,637 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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Popular flights according to clicks in the last 7 days on momondo
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