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$489+ 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
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
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 March 12, 2026.

This Delta deal was found by Cheapflights users on 3/10. 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 4/65:00 am
OPO
-
AUS
1 stop17h 10m
Delta
Mon 4/136:39 pm
AUS
-
OPO
2 stops17h 16m
Delta
Deal found 3/10$815
This KLM deal was found by Cheapflights users on 3/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:00 am
OPO
-
AUS
1 stop17h 10m
KLM
Mon 5/116:05 pm
AUS
-
OPO
1 stop22h 10m
KLM
Deal found 3/8$817
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:00 am
OPO
-
AUS
2 stops22h 56m
Delta
Mon 5/116:05 pm
AUS
-
OPO
1 stop18h 05m
Delta
Deal found 3/8$823
This KLM deal was found by Cheapflights users on 3/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:00 am
OPO
-
AUS
2 stops18h 18m
KLM
Mon 5/116:05 pm
AUS
-
OPO
1 stop22h 10m
KLM
Deal found 3/8$827
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:30 am
OPO
-
AUS
2 stops18h 47m
Delta
Tue 5/129:00 am
AUS
-
OPO
2 stops19h 55m
Delta
Deal found 3/8$840
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/236:05 pm
OPO
-
AUS
1 stop20h 15m
Multiple Airlines
Thu 4/309:25 am
AUS
-
OPO
2 stops23h 35m
Multiple Airlines
Deal found 3/9$861
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 6/36:00 am
OPO
-
AUS
2 stops18h 11m
United Airlines
Tue 6/236:40 am
AUS
-
OPO
3 stops21h 05m
United Airlines
Deal found 3/10$878
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am
OPO
-
AUS
2 stops20h 56m
United Airlines
Mon 11/1612:20 pm
AUS
-
OPO
2 stops15h 10m
United Airlines
Deal found 3/11$880

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 March 12, 2026.

Round-trip from

$815
(Delta)

One-way from

$489
(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 March 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

Mon 4/6

6:30 am-10:44 pm

2 stops22h 14m

Austin Bergstrom

Mon 4/13

6:15 pm-5:55 pm

2 stops17h 40m

$826

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 4/23

6:05 pm-8:20 am

1 stop20h 15m

Austin Bergstrom

Thu 4/30

9:25 am-3:00 pm

2 stops23h 35m

$861

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 6/3

6:00 am-6:11 pm

2 stops18h 11m

Austin Bergstrom

Tue 6/23

6:40 am-9:45 am

3 stops21h 05m

$878

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 4/22

6:00 am-9:15 pm

2 stops21h 15m

Austin Bergstrom

Mon 5/11

12:15 pm-11:15 am

2 stops17h 00m

$887

PortoAustin

OPO - AUS

OPOAUS

Porto

Sun 4/19

11:45 am-4:10 pm

1 stop34h 25m

Austin Bergstrom

Sun 5/10

6:38 pm-10:15 pm

2 stops21h 37m

$911

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 4/20

5:00 am-7:12 pm

2 stops20h 12m

Austin Bergstrom

Sun 5/10

6:38 pm-10:15 pm

2 stops21h 37m

$916

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 6/3

5:00 am-4:10 pm

1 stop17h 10m

Austin Bergstrom

Tue 6/23

3:35 pm-10:30 am

1 stop12h 55m

$942

PortoAustin

OPO - AUS

OPOAUS

Porto

Mon 4/6

9:25 pm-3:25 pm

1 stop24h 00m

Austin Bergstrom

Mon 4/13

8:30 pm-8:05 pm

2 stops17h 35m

$983

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 4/23

5:00 am-4:10 pm

1 stop17h 10m

Austin Bergstrom

Thu 4/30

6:05 pm-10:40 am

1 stop34h 35m

$1,036

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 6/10

6:00 am-10:46 pm

2 stops22h 46m

Austin Bergstrom

Tue 6/30

8:45 am-6:55 am

2 stops16h 10m

$1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 21 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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Fredericksburg
Round Rock
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Bastrop
Pflugerville
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Canyon Lake
Seguin
Horseshoe Bay

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