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$350+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
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 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/148:55 amOPO - AUS
2 stops20h 29mMultiple Airlines
Tue 1/205:50 amAUS - OPO
1 stop24h 00mMultiple Airlines
Deal found 12/15$673
This deal was found by Cheapflights users on 12/15. 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
Thu 4/93:35 pmAUS - OPO
1 stop12h 10mUnited Airlines
Deal found 12/15$748
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/156:00 amOPO - AUS
2 stops20h 49mLufthansa
Thu 1/224:10 pmAUS - OPO
1 stop24h 15mLufthansa
Deal found 12/17$827
This lol.travel deal was found by Cheapflights users on 12/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/156:00 amOPO - AUS
2 stops36h 19mAir Canada
Thu 1/2211:30 amAUS - OPO
2 stops18h 10mAir Canada
Deal found 12/17$854
This Delta deal was found by Cheapflights users on 12/15. 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 1/135:00 amOPO - AUS
2 stops25h 20mDelta
Thu 1/227:20 amAUS - OPO
2 stops21h 05mDelta
Deal found 12/15$860
This KLM deal was found by Cheapflights users on 12/15. 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 12/15$861
This Mytrip deal was found by Cheapflights users on 12/17. 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.
Sat 1/316:35 pmOPO - AUS
2 stops27h 29mMultiple Airlines
Sat 2/75:50 amAUS - OPO
2 stops20h 10mMultiple Airlines
Deal found 12/17$713
This deal was found by Cheapflights users on 12/15. 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
Mon 4/133:35 pmAUS - OPO
1 stop12h 10mUnited Airlines
Deal found 12/15$748
This Mytrip deal was found by Cheapflights users on 12/17. 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 1/156:35 pmOPO - AUS
2 stops27h 29mMultiple Airlines
Thu 1/227:25 amAUS - OPO
3 stops25h 35mMultiple Airlines
Deal found 12/17$722
This United Airlines deal was found by Cheapflights users on 12/17. 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 1/156:00 amOPO - AUS
2 stops20h 49mUnited Airlines
Thu 1/224:10 pmAUS - OPO
1 stop13h 30mUnited Airlines
Deal found 12/17$861

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 17, 2025.

Round-trip from

$673
(Kiwi.com)

One-way from

$464
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,134
From Porto to Austin Bergstrom
Search Deals
One-way flight 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
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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 December 17, 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

Wed 1/14

8:55 am-11:24 pm

2 stops20h 29m

Austin Bergstrom

Tue 1/20

5:50 am-11:50 am

1 stop24h 00m

$673

PortoAustin

OPO - AUS

OPOAUS

Porto

Sat 1/31

6:35 pm-4:04 pm

2 stops27h 29m

Austin Bergstrom

Sat 2/7

5:50 am-8:00 am

2 stops20h 10m

$713

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

6:35 pm-4:04 pm

2 stops27h 29m

Austin Bergstrom

Thu 1/22

7:25 am-3:00 pm

3 stops25h 35m

$722

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 3/31

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Thu 4/9

3:35 pm-9:45 am

1 stop12h 10m

$748

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 3/30

12:35 pm-8:57 pm

1 stop14h 22m

Austin Bergstrom

Mon 4/13

3:35 pm-9:45 am

1 stop12h 10m

$748

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

6:00 am-8:49 pm

2 stops20h 49m

Austin Bergstrom

Thu 1/22

4:10 pm-10:25 pm

1 stop24h 15m

$827

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

6:00 am-12:19 pm

2 stops36h 19m

Austin Bergstrom

Thu 1/22

11:30 am-11:40 am

2 stops18h 10m

$854

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 1/13

5:00 am-12:20 am

2 stops25h 20m

Austin Bergstrom

Thu 1/22

7:20 am-10:25 am

2 stops21h 05m

$860

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

$861

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/15

6:00 am-8:49 pm

2 stops20h 49m

Austin Bergstrom

Thu 1/22

4:10 pm-11:40 am

1 stop13h 30m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 17 results
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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.

  • 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.

Traveling to a place near Austin?

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