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Cheap flights from San Antonio to Portugal from $331

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 5/13. 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.
United Airlines Logo
6:49 am - 9:20 am
SAT
-
LIS
20h 31m
2 stops
United Airlines Logo
5:05 am - 10:59 pm
LIS
-
SAT
23h 54m
2 stops
$499United Airlines
Tue, Apr 21 - Tue, Apr 28
Delta Logo
1:42 pm - 2:55 pm
SAT
-
LIS
19h 13m
2 stops
Delta Logo
5:00 am - 9:30 pm
LIS
-
SAT
22h 30m
2 stops
$501Delta
Tue, Apr 28 - Wed, May 6
Delta Logo
4:44 pm - 5:50 pm
SAT
-
LIS
19h 06m
2 stops
Delta Logo
11:55 am - 12:46 am
LIS
-
SAT
18h 51m
2 stops
$502Delta
Tue, Apr 14 - Wed, Apr 29
Delta Logo
4:30 pm - 6:45 pm
SAT
-
LIS
20h 15m
2 stops
Delta Logo
5:00 am - 11:08 pm
LIS
-
SAT
24h 08m
2 stops
$506Delta
Mon, Apr 13 - Wed, May 6
Delta Logo
6:33 pm - 6:45 pm
SAT
-
LIS
18h 12m
2 stops
Delta Logo
5:00 am - 12:46 am
LIS
-
SAT
25h 46m
2 stops
$507Delta
Mon, Apr 13 - Mon, Apr 20
Delta Logo
4:44 pm - 5:50 pm
SAT
-
LIS
19h 06m
2 stops
Delta Logo
5:35 am - 11:08 pm
LIS
-
SAT
23h 33m
2 stops
$508Delta
Tue, Apr 21 - Tue, Apr 28
Iberia Logo
1:32 pm - 4:05 pm
SAT
-
LIS
20h 33m
2 stops
Iberia Logo
12:30 pm - 10:52 pm
LIS
-
SAT
16h 22m
2 stops
$509Iberia
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
6:49 am - 9:20 am
SAT
-
LIS
20h 31m
2 stops
United Airlines Logo
11:25 am - 3:46 pm
LIS
-
SAT
34h 21m
3 stops
$515United Airlines
Tue, Apr 21 - Tue, Apr 28
Iberia Logo
5:36 pm - 11:25 pm
SAT
-
LIS
47h 49m
2 stops
Iberia Logo
12:30 pm - 11:56 pm
LIS
-
SAT
17h 26m
2 stops
$517Iberia
Mon, Apr 6 - Mon, Apr 13
Lufthansa Logo
7:15 am - 9:20 am
SAT
-
LIS
20h 05m
2 stops
Lufthansa Logo
10:25 am - 10:39 am
LIS
-
SAT
30h 14m
1 stop
$519Lufthansa
Wed, Apr 22 - Tue, May 5

United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Apr 13
SAT12:09 pmSan Antonio
39h 11m
2 stops
LIS9:20 amLisbon Humberto Delgado
Apr 20
LIS11:25 amLisbon Humberto Delgado
36h 18m
3 stops
SAT5:43 pmSan Antonio
$576
United Airlines
Apr 28
SAT12:15 pmSan Antonio
14h 05m
1 stop
LIS8:20 amLisbon Humberto Delgado
May 6
LIS12:20 pmLisbon Humberto Delgado
14h 15m
1 stop
SAT8:35 pmSan Antonio
$593
United Airlines
Apr 13
SAT12:09 pmSan Antonio
39h 11m
2 stops
LIS9:20 amLisbon Humberto Delgado
Apr 20
LIS12:20 pmLisbon Humberto Delgado
28h 43m
1 stop
SAT11:03 amSan Antonio
$602

British Airways flights from San Antonio to Portugal

Our best British Airways deals on San Antonio to Portugal flight tickets
British Airways
Apr 8
SAT1:19 pmSan Antonio
27h 56m
2 stops
LIS11:15 pmLisbon Humberto Delgado
Apr 15
LIS7:20 amLisbon Humberto Delgado
22h 39m
2 stops
SAT11:59 pmSan Antonio
$595
British Airways
Apr 15
SAT4:28 pmSan Antonio
19h 27m
2 stops
LIS5:55 pmLisbon Humberto Delgado
Apr 21
LIS11:00 amLisbon Humberto Delgado
18h 59m
2 stops
SAT11:59 pmSan Antonio
$604
British Airways
Apr 15
SAT4:28 pmSan Antonio
19h 27m
2 stops
LIS5:55 pmLisbon Humberto Delgado
Apr 28
LIS7:10 amLisbon Humberto Delgado
22h 49m
2 stops
SAT11:59 pmSan Antonio
$605

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 February 22, 2026.
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 4/21

6:49 am-9:20 am

2 stops20h 31m

Lisbon Humberto Delgado

Tue 4/28

5:05 am-10:59 pm

2 stops23h 54m

$499

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/28

1:42 pm-2:55 pm

2 stops19h 13m

Lisbon Humberto Delgado

Wed 5/6

5:00 am-9:30 pm

2 stops22h 30m

$501

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/14

4:44 pm-5:50 pm

2 stops19h 06m

Lisbon Humberto Delgado

Wed 4/29

11:55 am-12:46 am

2 stops18h 51m

$502

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 4/13

4:30 pm-6:45 pm

2 stops20h 15m

Lisbon Humberto Delgado

Wed 5/6

5:00 am-11:08 pm

2 stops24h 08m

$506

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 4/13

6:33 pm-6:45 pm

2 stops18h 12m

Lisbon Humberto Delgado

Mon 4/20

5:00 am-12:46 am

2 stops25h 46m

$507

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/21

4:44 pm-5:50 pm

2 stops19h 06m

Lisbon Humberto Delgado

Tue 4/28

5:35 am-11:08 pm

2 stops23h 33m

$508

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/21

1:32 pm-4:05 pm

2 stops20h 33m

Lisbon Humberto Delgado

Tue 4/28

12:30 pm-10:52 pm

2 stops16h 22m

$509

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/21

6:49 am-9:20 am

2 stops20h 31m

Lisbon Humberto Delgado

Tue 4/28

11:25 am-3:46 pm

3 stops34h 21m

$515

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 4/6

5:36 pm-11:25 pm

2 stops47h 49m

Lisbon Humberto Delgado

Mon 4/13

12:30 pm-11:56 pm

2 stops17h 26m

$517

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 4/22

7:15 am-9:20 am

2 stops20h 05m

Lisbon Humberto Delgado

Tue 5/5

10:25 am-10:39 am

1 stop30h 14m

$519

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 $513, 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.

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 $936 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 7% 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 45m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 14h 45m
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 $445Free CancellationRating
6.7
7,757 reviews
Search British Airways flights
American AirlinesPriceFrom $522Free CancellationRating
7.2
11,338 reviews
Search American Airlines flights
DeltaPriceFrom $578Free CancellationRating
7.9
8,240 reviews
Search Delta flights
United AirlinesPriceFrom $648Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,802 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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