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Cheap flights from San Antonio to Portugal from $338

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 10/14. 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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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
7:00 am - 10:30 am
SAT
-
LIS
21h 30m
1 stop
United Airlines Logo
11:25 am - 3:09 pm
LIS
-
SAT
33h 44m
2 stops
$840United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
6:27 am - 9:20 am
SAT
-
LIS
20h 53m
2 stops
United Airlines Logo
11:25 am - 3:09 pm
LIS
-
SAT
33h 44m
2 stops
$844United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
12:01 pm - 10:30 am
SAT
-
LIS
16h 29m
1 stop
United Airlines Logo
1:00 pm - 12:11 pm
LIS
-
SAT
29h 11m
2 stops
$845United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
7:00 am - 10:30 am
SAT
-
LIS
21h 30m
1 stop
United Airlines Logo
6:45 am - 10:55 pm
LIS
-
SAT
22h 10m
2 stops
$849United Airlines
Sun, Aug 9 - Tue, Aug 25
United Airlines Logo
5:32 pm - 9:20 am
SAT
-
LIS
33h 48m
2 stops
United Airlines Logo
6:45 am - 10:55 pm
LIS
-
SAT
22h 10m
2 stops
$853United Airlines
Sun, Aug 9 - Tue, Aug 25
Iberia Logo
7:10 pm - 4:05 pm
SAT
-
LIS
14h 55m
2 stops
Iberia Logo
8:45 pm - 10:50 pm
LIS
-
SAT
32h 05m
2 stops
$872Iberia
Mon, Aug 17 - Mon, Aug 24
Air Canada Logo
9:37 am - 9:20 am
SAT
-
LIS
17h 43m
3 stops
Air Canada Logo
11:25 am - 9:13 pm
LIS
-
SAT
39h 48m
2 stops
$874Air Canada
Sun, Aug 9 - Tue, Aug 25
Multiple Airlines Logo
9:37 am - 9:20 am
SAT
-
LIS
17h 43m
3 stops
Multiple Airlines Logo
1:00 pm - 10:58 am
LIS
-
SAT
27h 58m
2 stops
$886Multiple Airlines
Sun, Aug 9 - Tue, Aug 25
Multiple Airlines Logo
8:30 am - 9:20 pm
SAT
-
TER
31h 50m
3 stops
Multiple Airlines Logo
6:50 am - 6:37 pm
TER
-
SAT
40h 47m
3 stops
$1,303Multiple Airlines
Sat, Jun 13 - Sat, Jun 20
Air Canada Logo
7:43 am - 12:50 pm
SAT
-
TER
24h 07m
3 stops
Air Canada Logo
7:05 am - 8:27 am
TER
-
SAT
30h 22m
3 stops
$3,328Air Canada
Fri, Jul 24 - Mon, Aug 3

United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Aug 9
SAT7:00 amSan Antonio
21h 30m
1 stop
LIS10:30 amLisbon Humberto Delgado
Aug 25
LIS11:25 amLisbon Humberto Delgado
33h 44m
2 stops
SAT3:09 pmSan Antonio
$840
United Airlines
Aug 9
SAT6:27 amSan Antonio
20h 53m
2 stops
LIS9:20 amLisbon Humberto Delgado
Aug 25
LIS11:25 amLisbon Humberto Delgado
33h 44m
2 stops
SAT3:09 pmSan Antonio
$844
United Airlines
Aug 9
SAT12:01 pmSan Antonio
16h 29m
1 stop
LIS10:30 amLisbon Humberto Delgado
Aug 25
LIS1:00 pmLisbon Humberto Delgado
29h 11m
2 stops
SAT12:11 pmSan Antonio
$845

Iberia flights from San Antonio to Portugal

Our best Iberia deals on San Antonio to Portugal flight tickets
Iberia
Aug 17
SAT7:10 pmSan Antonio
14h 55m
2 stops
LIS4:05 pmLisbon Humberto Delgado
Aug 24
LIS8:45 pmLisbon Humberto Delgado
32h 05m
2 stops
SAT10:50 pmSan Antonio
$872
Iberia
May 19
SAT6:23 amSan Antonio
31h 42m
2 stops
LIS8:05 pmLisbon Humberto Delgado
May 25
LIS12:30 pmLisbon Humberto Delgado
40h 36m
2 stops
SAT11:06 pmSan Antonio
$8,179
Iberia
May 18
SAT1:32 pmSan Antonio
24h 33m
2 stops
LIS8:05 pmLisbon Humberto Delgado
May 26
LIS6:35 amLisbon Humberto Delgado
23h 26m
2 stops
SAT12:01 amSan Antonio
$8,418

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 May 5, 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

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

7:00 am-10:30 am

1 stop21h 30m

Lisbon Humberto Delgado

Tue 8/25

11:25 am-3:09 pm

2 stops33h 44m

$840

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

6:27 am-9:20 am

2 stops20h 53m

Lisbon Humberto Delgado

Tue 8/25

11:25 am-3:09 pm

2 stops33h 44m

$844

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

12:01 pm-10:30 am

1 stop16h 29m

Lisbon Humberto Delgado

Tue 8/25

1:00 pm-12:11 pm

2 stops29h 11m

$845
Quickest round-trip

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

7:00 am-10:30 am

1 stop21h 30m

Lisbon Humberto Delgado

Tue 8/25

6:45 am-10:55 pm

2 stops22h 10m

$849

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

5:32 pm-9:20 am

2 stops33h 48m

Lisbon Humberto Delgado

Tue 8/25

6:45 am-10:55 pm

2 stops22h 10m

$853

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 8/17

7:10 pm-4:05 pm

2 stops14h 55m

Lisbon Humberto Delgado

Mon 8/24

8:45 pm-10:50 pm

2 stops32h 05m

$872

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

9:37 am-9:20 am

3 stops17h 43m

Lisbon Humberto Delgado

Tue 8/25

11:25 am-9:13 pm

2 stops39h 48m

$874

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 8/9

9:37 am-9:20 am

3 stops17h 43m

Lisbon Humberto Delgado

Tue 8/25

1:00 pm-10:58 am

2 stops27h 58m

$886

San AntonioLajes

SAT - TER

SATTER

San Antonio

Sat 6/13

8:30 am-9:20 pm

3 stops31h 50m

Lajes

Sat 6/20

6:50 am-6:37 pm

3 stops40h 47m

$1,303

San AntonioLajes

SAT - TER

SATTER

San Antonio

Fri 7/24

7:43 am-12:50 pm

3 stops24h 07m

Lajes

Mon 8/3

7:05 am-8:27 am

3 stops30h 22m

$3,328

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 April. Flight prices, which tend to average around $355, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Portugal from San Antonio during March instead. Flights to Portugal in March, while not as cheap as those in April, still average around $492.

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

You could potentially save up to 39% 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

12h 27m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 12h 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

Frequently asked questions about flying from San Antonio to Portugal

  • 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
7,945 reviews
Search British Airways flights
DeltaPriceFrom $502Free CancellationRating
7.9
8,459 reviews
Search Delta flights
United AirlinesPriceFrom $624Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights
LufthansaPriceFrom $807Free CancellationRating
6.8
7,972 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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