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Cheap flights from San Antonio to Portugal from $371

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 5/17. 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
4:44 pm - 2:55 pm
SAT
-
LIS
16h 11m
2 stops
Multiple Airlines Logo
11:55 am - 12:46 am
LIS
-
SAT
18h 51m
2 stops
$521Multiple Airlines
Mon, Apr 20 - Wed, May 6
Delta Logo
1:42 pm - 2:55 pm
SAT
-
LIS
19h 13m
2 stops
Delta Logo
5:00 am - 8:30 pm
LIS
-
SAT
21h 30m
2 stops
$522Delta
Tue, Apr 28 - Wed, May 6
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
$528Delta
Tue, Apr 21 - Tue, Apr 28
Delta Logo
6:12 pm - 6:45 pm
SAT
-
LIS
18h 33m
2 stops
Delta Logo
5:35 am - 11:08 pm
LIS
-
SAT
23h 33m
2 stops
$534Delta
Tue, Apr 21 - Tue, Apr 28
Finnair Logo
1:32 pm - 3:50 pm
SAT
-
LIS
20h 18m
2 stops
Finnair Logo
6:45 pm - 6:42 pm
LIS
-
SAT
29h 57m
2 stops
$555Finnair
Tue, Apr 28 - Wed, May 6
Multiple Airlines Logo
4:44 pm - 2:55 pm
SAT
-
LIS
16h 11m
2 stops
Multiple Airlines Logo
11:55 am - 12:46 am
LIS
-
SAT
18h 51m
2 stops
$558Multiple Airlines
Mon, Apr 20 - Wed, May 6
British Airways Logo
7:12 pm - 11:10 pm
SAT
-
LIS
21h 58m
2 stops
British Airways Logo
7:10 am - 11:59 pm
LIS
-
SAT
22h 49m
2 stops
$577British Airways
Sat, Apr 18 - Sat, Apr 25
Lufthansa Logo
4:45 pm - 10:45 pm
SAT
-
LIS
24h 00m
2 stops
Lufthansa Logo
12:20 pm - 8:35 pm
LIS
-
SAT
14h 15m
1 stop
$585Lufthansa
Tue, Apr 28 - Wed, May 6
Air Canada Logo
9:40 am - 12:50 pm
SAT
-
TER
22h 10m
3 stops
Air Canada Logo
7:05 am - 10:50 am
TER
-
SAT
32h 45m
3 stops
$1,903Air Canada
Mon, Apr 20 - Mon, Apr 27
Air Canada Logo
5:30 am - 12:50 pm
SAT
-
TER
26h 20m
3 stops
Air Canada Logo
7:10 am - 10:46 am
TER
-
SAT
32h 36m
3 stops
$2,212Air Canada
Mon, Jul 20 - Fri, Jul 24

Lufthansa flights from San Antonio to Portugal

Our best Lufthansa deals on San Antonio to Portugal flight tickets
Lufthansa
Apr 28
SAT4:45 pmSan Antonio
24h 00m
2 stops
LIS10:45 pmLisbon Humberto Delgado
May 6
LIS12:20 pmLisbon Humberto Delgado
14h 15m
1 stop
SAT8:35 pmSan Antonio
$585
Lufthansa
Apr 20
SAT7:00 amSan Antonio
19h 20m
1 stop
LIS8:20 amLisbon Humberto Delgado
May 6
LIS12:20 pmLisbon Humberto Delgado
14h 15m
1 stop
SAT8:35 pmSan Antonio
$713
Lufthansa
Apr 20
SAT7:00 amSan Antonio
19h 20m
1 stop
LIS8:20 amLisbon Humberto Delgado
May 6
LIS12:20 pmLisbon Humberto Delgado
14h 15m
1 stop
SAT8:35 pmSan Antonio
$714

Delta flights from San Antonio to Portugal

Our best Delta deals on San Antonio to Portugal flight tickets
Delta
Apr 28
SAT1:42 pmSan Antonio
19h 13m
2 stops
LIS2:55 pmLisbon Humberto Delgado
May 6
LIS5:00 amLisbon Humberto Delgado
21h 30m
2 stops
SAT8:30 pmSan Antonio
$522
Delta
Apr 21
SAT4:44 pmSan Antonio
19h 06m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Apr 28
LIS5:35 amLisbon Humberto Delgado
23h 33m
2 stops
SAT11:08 pmSan Antonio
$528
Delta
Apr 21
SAT6:12 pmSan Antonio
18h 33m
2 stops
LIS6:45 pmLisbon Humberto Delgado
Apr 28
LIS5:35 amLisbon Humberto Delgado
23h 33m
2 stops
SAT11:08 pmSan Antonio
$533

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 March 7, 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

Cheapest round-trip
Quickest round-trip

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 4/20

4:44 pm-2:55 pm

2 stops16h 11m

Lisbon Humberto Delgado

Wed 5/6

11:55 am-12:46 am

2 stops18h 51m

$521

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-8:30 pm

2 stops21h 30m

$522

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

$528

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/21

6:12 pm-6:45 pm

2 stops18h 33m

Lisbon Humberto Delgado

Tue 4/28

5:35 am-11:08 pm

2 stops23h 33m

$534

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/28

1:32 pm-3:50 pm

2 stops20h 18m

Lisbon Humberto Delgado

Wed 5/6

6:45 pm-6:42 pm

2 stops29h 57m

$555

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 4/20

4:44 pm-2:55 pm

2 stops16h 11m

Lisbon Humberto Delgado

Wed 5/6

11:55 am-12:46 am

2 stops18h 51m

$558

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sat 4/18

7:12 pm-11:10 pm

2 stops21h 58m

Lisbon Humberto Delgado

Sat 4/25

7:10 am-11:59 pm

2 stops22h 49m

$577

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 4/28

4:45 pm-10:45 pm

2 stops24h 00m

Lisbon Humberto Delgado

Wed 5/6

12:20 pm-8:35 pm

1 stop14h 15m

$585

San AntonioLajes

SAT - TER

SATTER

San Antonio

Mon 4/20

9:40 am-12:50 pm

3 stops22h 10m

Lajes

Mon 4/27

7:05 am-10:50 am

3 stops32h 45m

$1,903

San AntonioLajes

SAT - TER

SATTER

San Antonio

Mon 7/20

5:30 am-12:50 pm

3 stops26h 20m

Lajes

Fri 7/24

7:10 am-10:46 am

3 stops32h 36m

$2,212

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 31% 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

15h 55m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 15h 55m
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
7,778 reviews
Search British Airways flights
DeltaPriceFrom $502Free CancellationRating
7.9
8,270 reviews
Search Delta flights
United AirlinesPriceFrom $648Free CancellationRating
7.4
9,404 reviews
Search United Airlines flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,833 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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