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$540+ Cheap flights from Porto (OPO) to Austin (AUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
Jun 11 — Jun 181
Thu 6/11
Thu 6/18
1 adult, Economy
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Cheap flight deals from Porto to Austin

Cheapest flights from Porto to Austin
Explore the most affordable flight options available from Porto to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2026.

This Delta deal was found by Cheapflights users on 5/7. 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.
Thu 5/215:00 am
OPO
-
AUS
1 stop17h 10m
Delta
Wed 5/272:48 pm
AUS
-
OPO
2 stops18h 37m
Delta
Deal found 5/7$962
This Delta deal was found by Cheapflights users on 5/10. 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.
Mon 5/185:00 am
OPO
-
AUS
1 stop17h 10m
Delta
Tue 5/2611:20 am
AUS
-
OPO
1 stop17h 10m
Delta
Deal found 5/10$969
This United Airlines deal was found by Cheapflights users on 5/10. 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 6/412:10 pm
OPO
-
AUS
1 stop31h 50m
United Airlines
Tue 6/97:05 am
AUS
-
OPO
1 stop20h 40m
United Airlines
Deal found 5/10$980
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/2112:35 pm
OPO
-
AUS
1 stop15h 49m
United Airlines
Wed 5/277:05 am
AUS
-
OPO
1 stop17h 50m
United Airlines
Deal found 5/7$986
This British Airways deal was found by Cheapflights users on 5/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:20 am
OPO
-
AUS
2 stops21h 27m
British Airways
Tue 5/265:55 pm
AUS
-
OPO
1 stop19h 35m
British Airways
Deal found 5/8$990

Find flight deals from Porto to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Austin (AUS). 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 May 12, 2026.

Round-trip from

$970
(Delta)

One-way from

$540
(Kiwi.com)
From Porto to Austin Bergstrom
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One-way flight from Porto to Austin Bergstrom
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Austin 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 2,558,603 searches. Data last updated May 12, 2026.
Use the filters below to find and compare flights from Porto to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 6/4

5:00 am-4:10 pm

1 stop17h 10m

Austin Bergstrom

Tue 6/9

3:45 pm-3:30 pm

2 stops17h 45m

$970

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 6/4

12:10 pm-2:00 pm

1 stop31h 50m

Austin Bergstrom

Tue 6/9

7:05 am-9:45 am

1 stop20h 40m

$980

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 7/20

1:30 pm-3:25 pm

1 stop31h 55m

Austin Bergstrom

Sat 8/1

5:23 pm-11:35 pm

2 stops48h 12m

$1,266

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 7/22

4:20 pm-4:10 pm

1 stop29h 50m

Austin Bergstrom

Mon 8/3

4:55 pm-3:25 pm

2 stops16h 30m

$1,339
Quickest round-trip

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 7/20

5:00 am-4:10 pm

1 stop17h 10m

Austin Bergstrom

Sat 8/1

11:15 am-10:20 am

1 stop17h 05m

$1,343

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 7/22

11:45 am-4:10 pm

1 stop34h 25m

Austin Bergstrom

Mon 8/3

11:10 am-10:30 am

1 stop17h 20m

$1,343

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 7/20

5:00 am-4:10 pm

1 stop17h 10m

Austin Bergstrom

Wed 7/29

11:15 am-10:30 am

1 stop17h 15m

$1,343
Cheapest one-way

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 9/17

8:20 am-10:40 pm

2 stops20h 20m

$600

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 7/20

1:30 pm-3:25 pm

1 stop31h 55m

$653

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 6/16

8:20 am-9:53 pm

2 stops19h 33m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 14 resultsSorted by cheapest first
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Best time to book a flight from Porto to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Porto with our price prediction graph.
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 Porto to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto to Austin?

    Departing from Porto to Austin will take you 17h 10m. The distance from Porto to Austin is about 4829 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Porto to Austin that include hotel bookings?

    Yes. In addition to deals on Porto to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Austin.

  • Can I find deals for business class flights from Porto to Austin?

    Yes. Cheapflights offers flight deals from Porto to Austin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
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