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Cheap flights from San Antonio to Portugal from $346

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 10/21. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 8:10 am
SAT
-
LIS
19h 10m
1 stop
United Airlines Logo
11:20 am - 3:30 pm
LIS
-
SAT
34h 10m
2 stops
$745United Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
12:50 pm - 8:10 am
SAT
-
LIS
13h 20m
1 stop
United Airlines Logo
11:20 am - 3:38 pm
LIS
-
SAT
34h 18m
2 stops
$746United Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
7:30 am - 8:10 am
SAT
-
LIS
18h 40m
2 stops
United Airlines Logo
11:20 am - 3:30 pm
LIS
-
SAT
34h 10m
2 stops
$750United Airlines
Sun, Dec 6 - Tue, Dec 8
Air Canada Logo
7:30 am - 11:00 am
SAT
-
LIS
21h 30m
2 stops
Air Canada Logo
11:20 am - 12:10 pm
LIS
-
SAT
30h 50m
2 stops
$754Air Canada
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
12:10 pm - 10:15 am
SAT
-
LIS
16h 05m
1 stop
United Airlines Logo
11:55 am - 8:06 pm
LIS
-
SAT
14h 11m
1 stop
$766United Airlines
Sun, Dec 6 - Tue, Dec 8
Air Canada Logo
9:00 am - 11:05 am
SAT
-
LIS
20h 05m
1 stop
Air Canada Logo
11:20 am - 8:06 pm
LIS
-
SAT
38h 46m
2 stops
$893Air Canada
Tue, Sep 8 - Tue, Nov 17
TAP AIR PORTUGAL Logo
9:00 am - 11:15 pm
SAT
-
TER
33h 15m
2 stops
TAP AIR PORTUGAL Logo
11:50 am - 11:48 am
TER
-
SAT
51h 58m
2 stops
$1,147TAP AIR PORTUGAL
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
4:17 pm - 12:55 pm
SAT
-
TER
39h 38m
3 stops
Multiple Airlines Logo
11:50 am - 11:48 am
TER
-
SAT
51h 58m
2 stops
$1,189Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
9:00 am - 11:15 pm
SAT
-
TER
33h 15m
2 stops
Multiple Airlines Logo
6:40 am - 11:16 am
TER
-
SAT
32h 36m
2 stops
$1,200Multiple Airlines
Tue, Oct 20 - Mon, Oct 26
TAP AIR PORTUGAL Logo
9:00 am - 11:15 pm
SAT
-
TER
33h 15m
2 stops
TAP AIR PORTUGAL Logo
2:55 pm - 11:48 am
TER
-
SAT
48h 53m
2 stops
$1,468TAP AIR PORTUGAL
Tue, Oct 20 - Wed, Oct 28

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United Airlines flights from San Antonio to Portugal

Our best United Airlines deals on San Antonio to Portugal flight tickets
United Airlines
Dec 6
SAT7:00 amSan Antonio
19h 10m
1 stop
LIS8:10 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
34h 10m
2 stops
SAT3:30 pmSan Antonio
$745
United Airlines
Dec 6
SAT12:50 pmSan Antonio
13h 20m
1 stop
LIS8:10 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
34h 18m
2 stops
SAT3:38 pmSan Antonio
$746
United Airlines
Dec 6
SAT7:30 amSan Antonio
18h 40m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
34h 10m
2 stops
SAT3:30 pmSan Antonio
$750

Air Canada flights from San Antonio to Portugal

Our best Air Canada deals on San Antonio to Portugal flight tickets
Air Canada
Dec 6
SAT7:30 amSan Antonio
21h 30m
2 stops
LIS11:00 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
30h 50m
2 stops
SAT12:10 pmSan Antonio
$754
Air Canada
Sep 8
SAT9:00 amSan Antonio
20h 05m
1 stop
LIS11:05 amLisbon Humberto Delgado
Nov 18
LIS11:20 amLisbon Humberto Delgado
34h 10m
2 stops
SAT3:30 pmSan Antonio
$893
Air Canada
Sep 8
SAT9:00 amSan Antonio
20h 05m
1 stop
LIS11:05 amLisbon Humberto Delgado
Nov 12
LIS1:00 pmLisbon Humberto Delgado
37h 06m
2 stops
SAT8:06 pmSan Antonio
$898

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 June 18, 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 12/6

7:00 am-8:10 am

1 stop19h 10m

Lisbon Humberto Delgado

Tue 12/8

11:20 am-3:30 pm

2 stops34h 10m

$745

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 12/6

12:50 pm-8:10 am

1 stop13h 20m

Lisbon Humberto Delgado

Tue 12/8

11:20 am-3:38 pm

2 stops34h 18m

$746

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 12/6

7:30 am-8:10 am

2 stops18h 40m

Lisbon Humberto Delgado

Tue 12/8

11:20 am-3:30 pm

2 stops34h 10m

$750

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 12/6

7:30 am-11:00 am

2 stops21h 30m

Lisbon Humberto Delgado

Tue 12/8

11:20 am-12:10 pm

2 stops30h 50m

$754
Quickest round-trip

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 12/6

12:10 pm-10:15 am

1 stop16h 05m

Lisbon Humberto Delgado

Tue 12/8

11:55 am-8:06 pm

1 stop14h 11m

$766

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 9/8

9:00 am-11:05 am

1 stop20h 05m

Lisbon Humberto Delgado

Tue 11/17

11:20 am-8:06 pm

2 stops38h 46m

$893

San AntonioLajes

SAT - TER

SATTER

San Antonio

Tue 10/20

9:00 am-11:15 pm

2 stops33h 15m

Lajes

Tue 10/27

11:50 am-11:48 am

2 stops51h 58m

$1,147

San AntonioLajes

SAT - TER

SATTER

San Antonio

Tue 10/20

4:17 pm-12:55 pm

3 stops39h 38m

Lajes

Tue 10/27

11:50 am-11:48 am

2 stops51h 58m

$1,189

San AntonioLajes

SAT - TER

SATTER

San Antonio

Tue 10/20

9:00 am-11:15 pm

2 stops33h 15m

Lajes

Mon 10/26

6:40 am-11:16 am

2 stops32h 36m

$1,200

San AntonioLajes

SAT - TER

SATTER

San Antonio

Tue 10/20

9:00 am-11:15 pm

2 stops33h 15m

Lajes

Wed 10/28

2:55 pm-11:48 am

2 stops48h 53m

$1,468

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 27% 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

13h 20m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 13h 20m
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
8,054 reviews
Search British Airways flights
United AirlinesPriceFrom $492Free CancellationRating
7.4
9,859 reviews
Search United Airlines flights
American AirlinesPriceFrom $522Free CancellationRating
7.1
11,684 reviews
Search American Airlines flights
DeltaPriceFrom $578Free CancellationRating
7.8
8,410 reviews
Search Delta flights
LufthansaPriceFrom $807Free CancellationRating
6.8
8,071 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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