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Cheap flights from San Antonio to Portugal from $406

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 9/26. 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.
Lufthansa Logo
12:41 pm - 1:30 pm-
18h 49m
Lufthansa Logo
5:00 am - 9:26 pm-
22h 26m
$719Lufthansa
Wed, Nov 11 - Wed, Nov 18
Multiple Airlines Logo
6:43 am - 9:20 am-
20h 37m
Multiple Airlines Logo
5:00 am - 9:13 pm-
22h 13m
$720Multiple Airlines
Sun, Jan 10 - Fri, Jan 22
United Airlines Logo
7:00 am - 8:10 am-
19h 10m
United Airlines Logo
11:20 am - 3:30 pm-
34h 10m
$726United Airlines
Sun, Jan 17 - Fri, Jan 29
United Airlines Logo
7:00 am - 8:10 am-
19h 10m
United Airlines Logo
11:20 am - 11:47 am-
30h 27m
$726United Airlines
Tue, Jan 12 - Tue, Jan 19
Delta Logo
12:10 pm - 8:00 am-
13h 50m
Delta Logo
11:30 am - 12:28 am-
18h 58m
$735Delta
Wed, Jan 13 - Tue, Jan 19
Delta Logo
10:45 am - 3:10 pm-
22h 25m
Delta Logo
5:00 am - 12:28 am-
25h 28m
$739Delta
Wed, Jan 13 - Tue, Jan 19
British Airways Logo
3:00 pm - 9:50 pm-
24h 50m
British Airways Logo
7:40 pm - 10:59 pm-
33h 19m
$931British Airways
Wed, Dec 16 - Tue, Dec 22
British Airways Logo
4:30 pm - 9:50 pm-
23h 20m
British Airways Logo
10:35 am - 11:58 pm-
19h 23m
$932British Airways
Wed, Dec 16 - Tue, Dec 22
American Airlines Logo
7:14 am - 9:05 am-
19h 51m
American Airlines Logo
11:05 am - 8:24 pm-
15h 19m
$1,030American Airlines
Mon, Sep 21 - Fri, Oct 2
American Airlines Logo
6:20 pm - 5:55 pm-
17h 35m
American Airlines Logo
11:05 am - 8:57 pm-
15h 52m
$1,079American Airlines
Mon, Aug 17 - Fri, Aug 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
Jan 17
SAT12:50 pmSan Antonio
13h 20m
1 stop
LIS8:10 amLisbon Humberto Delgado
Jan 28
LIS11:20 amLisbon Humberto Delgado
34h 10m
2 stops
SAT3:30 pmSan Antonio
$726
United Airlines
Oct 25
SAT6:25 amSan Antonio
20h 45m
1 stop
LIS8:10 amLisbon Humberto Delgado
Nov 11
LIS11:20 amLisbon Humberto Delgado
33h 53m
2 stops
SAT3:13 pmSan Antonio
$731
United Airlines
Jan 10
SAT5:30 amSan Antonio
20h 40m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 20
LIS11:20 amLisbon Humberto Delgado
30h 27m
2 stops
SAT11:47 amSan Antonio
$735

Delta flights from San Antonio to Portugal

Our best Delta deals on San Antonio to Portugal flight tickets
Delta
Jan 20
SAT12:10 pmSan Antonio
17h 10m
2 stops
LIS11:20 amLisbon Humberto Delgado
Jan 26
LIS5:00 amLisbon Humberto Delgado
18h 18m
2 stops
SAT5:18 pmSan Antonio
$740
Delta
Sep 21
SAT6:35 amSan Antonio
20h 15m
2 stops
LIS8:50 amLisbon Humberto Delgado
Oct 2
LIS5:00 amLisbon Humberto Delgado
25h 08m
2 stops
SAT12:08 amSan Antonio
$799
Delta
Dec 16
SAT12:53 pmSan Antonio
20h 17m
2 stops
LIS3:10 pmLisbon Humberto Delgado
Dec 22
LIS5:00 amLisbon Humberto Delgado
24h 20m
2 stops
SAT11:20 pmSan Antonio
$892

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 August 4, 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

Wed 11/11

12:41 pm-1:30 pm

2 stops18h 49m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-9:26 pm

2 stops22h 26m

$719

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/10

6:43 am-9:20 am

2 stops20h 37m

Lisbon Humberto Delgado

Fri 1/22

5:00 am-9:13 pm

2 stops22h 13m

$720

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Sun 1/17

7:00 am-8:10 am

1 stop19h 10m

Lisbon Humberto Delgado

Fri 1/29

11:20 am-3:30 pm

2 stops34h 10m

$726

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Tue 1/12

7:00 am-8:10 am

1 stop19h 10m

Lisbon Humberto Delgado

Tue 1/19

11:20 am-11:47 am

2 stops30h 27m

$726
Quickest round-trip

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 1/13

12:10 pm-8:00 am

1 stop13h 50m

Lisbon Humberto Delgado

Tue 1/19

11:30 am-12:28 am

2 stops18h 58m

$735

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 1/13

10:45 am-3:10 pm

2 stops22h 25m

Lisbon Humberto Delgado

Tue 1/19

5:00 am-12:28 am

2 stops25h 28m

$739

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 12/16

3:00 pm-9:50 pm

2 stops24h 50m

Lisbon Humberto Delgado

Tue 12/22

7:40 pm-10:59 pm

2 stops33h 19m

$931

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Wed 12/16

4:30 pm-9:50 pm

2 stops23h 20m

Lisbon Humberto Delgado

Tue 12/22

10:35 am-11:58 pm

2 stops19h 23m

$932

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 9/21

7:14 am-9:05 am

1 stop19h 51m

Lisbon Humberto Delgado

Fri 10/2

11:05 am-8:24 pm

1 stop15h 19m

$1,030

San AntonioLisbon

SAT - LIS

SATLIS

San Antonio

Mon 8/17

6:20 pm-5:55 pm

2 stops17h 35m

Lisbon Humberto Delgado

Fri 8/28

11:05 am-8:57 pm

1 stop15h 52m

$1,079

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 February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $659.

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

You could potentially save up to 16% 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

18h 03m

Direct flights

None
The fastest flight from San Antonio to Portugal takes 18h 03m
There are no direct flights from San Antonio to Portugal. There are no popular flight routes from San Antonio to Portugal.
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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
8,150 reviews
Search British Airways flights
United AirlinesPriceFrom $492Free CancellationRating
7.4
10,060 reviews
Search United Airlines flights
DeltaPriceFrom $502Free CancellationRating
7.8
8,487 reviews
Search Delta flights
American AirlinesPriceFrom $522Free CancellationRating
7.1
11,849 reviews
Search American Airlines flights
LufthansaPriceFrom $807Free CancellationRating
6.8
8,175 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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