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$692+ Cheap flights from Porto (OPO) to Austin (AUS)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Porto to Austin

Best flights from Porto to Austin
Discover carefully curated flight deals from Porto to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:35 pmOPO - AUS
1 stop14h 22mUnited Airlines
Tue 4/72:00 pmAUS - OPO
1 stop13h 45mUnited Airlines
Deal found 12/11$749
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/157:00 amOPO - AUS
2 stops22h 24mMultiple Airlines
Thu 1/227:25 amAUS - OPO
3 stops23h 50mMultiple Airlines
Deal found 12/11$819
This KLM deal was found by Cheapflights users on 12/11. 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.
Thu 1/156:35 amOPO - AUS
1 stop15h 35mKLM
Thu 1/226:05 pmAUS - OPO
1 stop34h 25mKLM
Deal found 12/11$854
This Delta deal was found by Cheapflights users on 12/10. 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 1/1211:15 amOPO - AUS
2 stops41h 40mDelta
Sun 1/185:55 pmAUS - OPO
2 stops34h 35mDelta
Deal found 12/10$877
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/228:20 amOPO - AUS
2 stops36h 11mAmerican Airlines
Mon 1/266:55 pmAUS - OPO
2 stops54h 45mAmerican Airlines
Deal found 12/10$882
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:35 pmOPO - AUS
1 stop14h 22mUnited Airlines
Mon 4/132:00 pmAUS - OPO
1 stop13h 45mUnited Airlines
Deal found 12/11$749
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:35 pmOPO - AUS
1 stop14h 22mUnited Airlines
Tue 4/72:00 pmAUS - OPO
1 stop13h 45mUnited Airlines
Deal found 12/11$749
This Delta deal was found by Cheapflights users on 12/10. 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 1/1211:15 amOPO - AUS
2 stops41h 40mDelta
Mon 1/196:10 pmAUS - OPO
1 stop15h 15mDelta
Deal found 12/10$883
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:35 pmOPO - AUS
1 stop14h 22mUnited Airlines
Thu 4/93:35 pmAUS - OPO
1 stop12h 10mUnited Airlines
Deal found 12/11$764
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:35 pmOPO - AUS
1 stop14h 22mUnited Airlines
Wed 4/83:35 pmAUS - OPO
1 stop12h 10mUnited Airlines
Deal found 12/11$824
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2712:35 pmOPO - AUS
1 stop16h 19mUnited Airlines
Mon 4/133:35 pmAUS - OPO
1 stop12h 10mUnited Airlines
Deal found 12/11$854

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 December 12, 2025.

Round-trip from

$692
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,134
From Porto to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 2025.
Use the filters below to find and compare flights from Porto to Austin that are best for you.

Fly from

Porto

Fly to

Austin

Route

Depart

Return

Price

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 3/31

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Tue 4/7

2:00 pm-9:45 am

1 stop13h 45m

$749

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 3/31

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Mon 4/13

2:00 pm-9:45 am

1 stop13h 45m

$749

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 3/30

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Tue 4/7

2:00 pm-9:45 am

1 stop13h 45m

$749

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 3/30

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Thu 4/9

3:35 pm-9:45 am

1 stop12h 10m

$764

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

7:00 am-11:24 pm

2 stops22h 24m

Austin Bergstrom

Thu 1/22

7:25 am-1:15 pm

3 stops23h 50m

$819

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 3/30

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Wed 4/8

3:35 pm-9:45 am

1 stop12h 10m

$824

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

6:35 am-4:10 pm

1 stop15h 35m

Austin Bergstrom

Thu 1/22

6:05 pm-10:30 am

1 stop34h 25m

$854

PortoAustin

OPO - AUS

OPOAUS

Porto

Fri 3/27

12:35 pm-11:54 pm

1 stop16h 19m

Austin Bergstrom

Mon 4/13

3:35 pm-9:45 am

1 stop12h 10m

$854

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 1/12

11:15 am-10:55 pm

2 stops41h 40m

Austin Bergstrom

Sun 1/18

5:55 pm-10:30 am

2 stops34h 35m

$877

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/22

8:20 am-2:31 pm

2 stops36h 11m

Austin Bergstrom

Mon 1/26

6:55 pm-7:40 am

2 stops54h 45m

$882

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 11 results
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2

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 14h 22m. The distance from Porto to Austin is about 4829 mi.

  • 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?

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Round Rock
San Marcos
Georgetown
Fredericksburg
Pflugerville
Dripping Springs
Canyon Lake
Seguin
Horseshoe Bay

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