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$274+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Porto to Austin

One-way flights from Porto to Austin
Search for one-way flight options from Porto to Austin. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Tue 1/278:25 amOPO - AUS
3 stops55h 56mMultiple Airlines
Deal found 12/3$274
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 1/289:55 pmOPO - AUS
3 stops48h 09mMultiple Airlines
Deal found 12/3$285
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 1/291:00 pmOPO - AUS
3 stops33h 04mMultiple Airlines
Deal found 12/3$302
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Mon 2/26:15 amOPO - AUS
3 stops45h 20mMultiple Airlines
Deal found 12/3$315
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Fri 1/309:55 pmOPO - AUS
3 stops48h 09mMultiple Airlines
Deal found 12/3$319
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Sat 1/317:45 amOPO - AUS
3 stops38h 19mMultiple Airlines
Deal found 12/3$322
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Sun 2/16:00 amOPO - AUS
3 stops48h 16mMultiple Airlines
Deal found 12/3$374

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 4, 2025.

Popular in

December

Cheapest in

January

Average price

$1,134
Highest demand for flights based on searches. 7% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 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 4, 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 1/27

8:25 am-10:21 am

3 stops55h 56m

$274

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 1/28

9:55 pm-4:04 pm

3 stops48h 09m

$285

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 1/29

1:00 pm-4:04 pm

3 stops33h 04m

$302

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 2/2

6:15 am-9:35 pm

3 stops45h 20m

$315

PortoAustin

OPO - AUS

OPOAUS

Porto

Fri 1/30

9:55 pm-4:04 pm

3 stops48h 09m

$319

PortoAustin

OPO - AUS

OPOAUS

Porto

Sat 1/31

7:45 am-11:24 pm

2 stops45h 39m

$361

PortoAustin

OPO - AUS

OPOAUS

Porto

Sun 2/1

6:00 am-12:16 am

3 stops48h 16m

$374

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 5/27

8:20 am-11:59 pm

2 stops21h 39m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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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