$867+ Cheap flights from San Antonio (SAT) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — OPO
Nov 28 — Dec 51
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Antonio to Porto
Cheapest
Best
Last-minute
Cheapest flights from San Antonio to PortoExplore the most affordable flight options available from San Antonio to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2026.
Explore the most affordable flight options available from San Antonio to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2026.
This KLM deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:45 am -
2 stops16h 50m
Sun 11/1511:30 am -
2 stops17h 24m
Deal found 10/24![Multiple Airlines logo]()
$867
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:45 am -
2 stops16h 50m
Sun 11/155:00 am -
2 stops23h 54m
Deal found 10/28![Delta logo]()
$869
This KLM deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:04 am -
2 stops17h 26m
Sun 11/1511:30 am -
2 stops17h 24m
Deal found 10/25![KLM logo]()
$871
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:45 pm -
1 stop14h 45m
Sun 11/1512:30 pm -
2 stops40h 21m
Deal found 10/26![United Airlines logo]()
$896
This KAYAK deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:45 pm -
1 stop14h 45m
Sun 11/156:15 am -
2 stops18h 55m
Deal found 10/25![Lufthansa logo]()
$911
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:10 pm -
2 stops32h 20m
Thu 12/1712:35 pm -
2 stops30h 13m
Deal found 10/26![United Airlines logo]()
$930
Best flights from San Antonio to PortoDiscover carefully curated flight deals from San Antonio to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2026.
Discover carefully curated flight deals from San Antonio to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2026.
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:45 am -
2 stops16h 50m
Sun 11/155:00 am -
2 stops23h 54m
Deal found 10/28![Delta logo]()
$869
This KLM deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:04 am -
2 stops17h 26m
Sun 11/1511:30 am -
2 stops17h 24m
Deal found 10/25![KLM logo]()
$871
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:45 pm -
1 stop14h 45m
Sun 11/1512:30 pm -
2 stops40h 21m
Deal found 10/26![United Airlines logo]()
$896
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:15 am -
1 stop21h 15m
Sun 11/1512:35 pm -
1 stop29h 04m
Deal found 10/28![Multiple Airlines logo]()
$1,096
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/127:00 pm -
2 stops56h 30m
Sun 3/216:00 am -
2 stops34h 21m
Deal found 10/24![United Airlines logo]()
$902
Last-minute flights from San Antonio to PortoDiscover last-minute flight deals from San Antonio to Porto. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Porto. Data last updated October 29, 2026 and is based on user searches.
This KLM deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:45 am -
2 stops16h 50m
Sun 11/1511:30 am -
2 stops17h 24m
Deal found 10/24![Multiple Airlines logo]()
$867
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:45 am -
2 stops16h 50m
Sun 11/155:00 am -
2 stops23h 54m
Deal found 10/28![Delta logo]()
$869
This KLM deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:04 am -
2 stops17h 26m
Sun 11/1511:30 am -
2 stops17h 24m
Deal found 10/25![KLM logo]()
$871
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:45 pm -
1 stop14h 45m
Sun 11/1512:30 pm -
2 stops40h 21m
Deal found 10/26![United Airlines logo]()
$896
This KAYAK deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:45 pm -
1 stop14h 45m
Sun 11/156:15 am -
2 stops18h 55m
Deal found 10/25![Lufthansa logo]()
$911
This Ovago deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:20 pm -
2 stops18h 50m
Sat 11/286:00 am -
2 stops20h 53m
Deal found 10/24![Lufthansa logo]()
$1,494
Find flight deals from San Antonio to Porto
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $867 (KLM) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Porto 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, Cheapflights users made 7,457,451 searches. Data last updated October 29, 2026.
Use the filters below to find and compare flights from San Antonio to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioPorto
SAT San Antonio - OPO Porto
SATOPO
San Antonio
Tue 11/10
11:45 am-10:35 am
2 stops16h 50m
Porto
Sun 11/15
5:00 am-10:54 pm
2 stops23h 54m
$869
Quickest round-trip
San AntonioPorto
SAT San Antonio - OPO Porto
SATOPO
San Antonio
Tue 11/10
11:04 am-10:30 am
2 stops17h 26m
Porto
Sun 11/15
11:30 am-10:54 pm
2 stops17h 24m
$871
San AntonioPorto
SAT San Antonio - OPO Porto
SATOPO
San Antonio
Tue 11/10
12:45 pm-9:30 am
1 stop14h 45m
Porto
Sun 11/15
12:30 pm-10:51 pm
2 stops40h 21m
$896
San AntonioPorto
SAT San Antonio - OPO Porto
SATOPO
San Antonio
Fri 3/12
7:00 pm-9:30 am
2 stops56h 30m
Porto
Sun 3/21
6:00 am-11:21 am
2 stops34h 21m
$902
San AntonioPorto
SAT San Antonio - OPO Porto
SATOPO
San Antonio
Tue 11/10
6:15 am-9:30 am
1 stop21h 15m
Porto
Sun 11/15
12:35 pm-11:39 am
1 stop29h 04m
$1,096
Sorted by cheapest first
Compare providers for flights from San Antonio to Porto
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Porto in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Antonio-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Antonio to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from San Antonio with our price prediction graph.
SAT-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from San Antonio to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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