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$338+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
1 adult, Economy
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Cheap 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 agosto 18, 2025.

Round-trip from

$762
(Mytrip)

One-way from

$338
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$1,253
From Porto to Austin Bergstrom
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One-way flight from Porto to Austin Bergstrom
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Highest demand for flights based on searches. 9% potential increase in price ($93 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 18, 2025.

This Mytrip deal was found by Cheapflights users on 8/18. 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.
jue. 9/46:40 amOPO - AUS
3 stops35h 40mMultiple Airlines
lun. 9/812:05 pmAUS - OPO
2 stops22h 40mMultiple Airlines
Deal found 8/18$762
This United Airlines deal was found by Cheapflights users on 8/18. 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.
jue. 9/46:00 amOPO - AUS
2 stops20h 25mUnited Airlines
lun. 9/88:25 amAUS - OPO
1 stop16h 30mUnited Airlines
Deal found 8/18$794
This Gotogate deal was found by Cheapflights users on 8/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:10 pmOPO - AUS
1 stop32h 10mLufthansa
lun. 9/84:05 pmAUS - OPO
1 stop17h 40mLufthansa
Deal found 8/17$804
This United Airlines deal was found by Cheapflights users on 8/17. 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.
mar. 9/1612:50 pmOPO - AUS
1 stop13h 05mUnited Airlines
mar. 9/2311:40 amAUS - OPO
1 stop14h 05mUnited Airlines
Deal found 8/17$811
This Lufthansa deal was found by Cheapflights users on 8/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:10 pmOPO - AUS
1 stop32h 10mLufthansa
jue. 10/24:05 pmAUS - OPO
1 stop24h 40mLufthansa
Deal found 8/18$815
This United Airlines deal was found by Cheapflights users on 8/18. 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.
jue. 9/46:00 amOPO - AUS
2 stops20h 25mUnited Airlines
jue. 10/29:44 amAUS - OPO
2 stops24h 01mUnited Airlines
Deal found 8/18$819
This Air France deal was found by Cheapflights users on 8/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/46:30 amOPO - AUS
1 stop15h 30mKLM
jue. 10/25:00 pmAUS - OPO
2 stops16h 30mKLM
Deal found 8/18$857

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 agosto 18, 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

jue. 9/4

6:40 am-12:20 pm

3 stops35h 40m

Austin Bergstrom

lun. 9/8

12:05 pm-4:45 pm

2 stops22h 40m

$762

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/4

6:00 am-8:50 pm

2 stops20h 50m

Austin Bergstrom

lun. 9/8

12:10 pm-9:45 am

2 stops15h 35m

$794

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/4

12:10 pm-2:20 pm

1 stop32h 10m

Austin Bergstrom

lun. 9/8

4:05 pm-3:45 pm

1 stop17h 40m

$804

PortoAustin

OPO - AUS

OPOAUS

Porto

mar. 9/16

12:50 pm-7:55 pm

1 stop13h 05m

Austin Bergstrom

mar. 9/23

11:40 am-7:45 am

1 stop14h 05m

$811

PortoAustin

OPO - AUS

OPOAUS

Porto

mié. 9/24

6:55 am-6:03 pm

2 stops41h 08m

$338

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/11

9:35 pm-11:02 pm

3 stops55h 27m

$360

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/25

6:45 am-4:34 pm

3 stops39h 49m

$425

PortoAustin

OPO - AUS

OPOAUS

Porto

mié. 9/24

9:35 am-10:04 pm

1 stop18h 29m

$716

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/11

9:50 am-7:59 pm

1 stop16h 09m

$716

PortoAustin

OPO - AUS

OPOAUS

Porto

jue. 9/25

9:55 am-3:50 pm

1 stop35h 55m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

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.

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Austin. Reviews last updated agosto 18, 2025.
Read through reviews of airlines operating flights from Porto to Austin, such as KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,385 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 20h 50m. The distance from Porto to Austin is about 4829 mi.

  • What is the cheapest airline to fly from Porto to Austin round-trip?

    Currently priced at $809, KLM will fly you from Porto to Austin and back. In addition to KLM, many other airlines offer competitively priced options for your trip. KLM is currently priced 11% below the average price you’ll pay for this route.

  • 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.

  • What is the cheapest month to book a flight from Porto to Austin?

    Currently, January is the cheapest month in which you can book a flight from Porto to Austin (average of $286). Flying from Porto to Austin in March is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
San Marcos
Georgetown
Fredericksburg
Pflugerville
Dripping Springs
Cedar Park
Canyon Lake
Round Rock
Seguin
Horseshoe Bay

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Porto to Austin

Discover the top airline that operate flights from Porto to Austin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$809Average$1,055FlexibilityNo cancel feeOn-time75%

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