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$279+ Cheap flights from Austin (AUS) to Porto (OPO)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — OPO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Austin to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Porto (OPO). 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 July 29, 2025.

Round-trip from

$590
(United Airlines)

One-way from

$279
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$836
From Austin Bergstrom to Porto
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One-way flight from Austin Bergstrom to Porto
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Highest demand for flights based on searches. 18% potential increase in price ($234 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Austin to Porto

Cheapest flights from Austin to Porto
Explore the most affordable flight options available from Austin to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 11/183:00 pmAUS - OPO
1 stop12h 30mUnited Airlines
Wed 11/266:00 amOPO - AUS
2 stops20h 45mUnited Airlines
Deal found 7/27$590
This Iberia deal was found by Cheapflights users on 7/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:45 amAUS - OPO
2 stops28h 15mIberia
Mon 11/248:40 pmOPO - AUS
2 stops30h 39mIberia
Deal found 7/27$609
This Ovago deal was found by Cheapflights users on 7/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:18 pmAUS - OPO
1 stop11h 12mLufthansa
Wed 11/264:15 pmOPO - AUS
1 stop28h 00mLufthansa
Deal found 7/27$618
This Delta deal was found by Cheapflights users on 7/27. 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 11/1712:20 pmAUS - OPO
2 stops16h 10mDelta
Thu 11/276:35 amOPO - AUS
1 stop15h 35mDelta
Deal found 7/27$631
This Air France deal was found by Cheapflights users on 7/27. 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.
Mon 11/1711:20 amAUS - OPO
2 stops17h 10mMultiple Airlines
Thu 11/274:10 pmOPO - AUS
2 stops31h 18mMultiple Airlines
Deal found 7/27$641
This British Airways deal was found by Cheapflights users on 7/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:55 pmAUS - OPO
1 stop15h 45mBritish Airways
Wed 11/266:30 pmOPO - AUS
1 stop28h 20mBritish Airways
Deal found 7/27$646
This KLM deal was found by Cheapflights users on 7/27. 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 11/176:05 pmAUS - OPO
1 stop34h 25mKLM
Thu 11/276:35 amOPO - AUS
1 stop15h 35mKLM
Deal found 7/27$653
This Gotogate deal was found by Cheapflights users on 7/29. 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.
Sun 8/172:15 pmAUS - OPO
2 stops37h 20mAir Canada
Tue 9/212:50 pmOPO - AUS
1 stop13h 05mAir Canada
Deal found 7/29$721
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 10/177:31 pmAUS - OPO
2 stops14h 24mAmerican Airlines
Thu 10/2312:20 pmOPO - AUS
2 stops17h 24mAmerican Airlines
Deal found 7/29$738

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Porto 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 July 29, 2025.
Use the filters below to find and compare flights from Austin to Porto that are best for you.

Fly from

Austin

Fly to

Porto

Route

Depart

Return

Price

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 11/18

3:00 pm-9:30 am

1 stop12h 30m

Porto

Wed 11/26

6:00 am-8:45 pm

2 stops20h 45m

$590

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Sun 11/16

9:45 am-8:00 pm

2 stops28h 15m

Porto

Mon 11/24

8:40 pm-9:19 pm

2 stops30h 39m

$609

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 11/18

4:18 pm-9:30 am

1 stop11h 12m

Porto

Wed 11/26

4:15 pm-2:15 pm

1 stop28h 00m

$618

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/17

12:20 pm-10:30 am

2 stops16h 10m

Porto

Thu 11/27

6:35 am-4:10 pm

1 stop15h 35m

$631

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/17

11:20 am-10:30 am

2 stops17h 10m

Porto

Thu 11/27

4:10 pm-5:28 pm

2 stops31h 18m

$641

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/17

6:55 pm-4:40 pm

1 stop15h 45m

Porto

Tue 11/25

5:30 pm-4:50 pm

1 stop29h 20m

$646

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/17

6:05 pm-10:30 am

1 stop34h 25m

Porto

Thu 11/27

6:35 am-4:10 pm

1 stop15h 35m

$653

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Fri 10/17

7:31 pm-3:55 pm

2 stops14h 24m

Porto

Thu 10/23

12:20 pm-11:44 pm

2 stops17h 24m

$738

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 11/18

1:00 pm-11:15 am

2 stops40h 15m

Porto

Fri 11/28

6:00 am-12:14 pm

2 stops36h 14m

$744

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

10:35 am-10:30 pm

3 stops29h 55m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 12 results
1
2

Best time to book a flight from Austin to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Austin 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.

Cheapflights Insights

Everything you need to know about your flight from Austin to Porto

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

Currently, January is the cheapest month in which you can book a flight from Austin to Porto (average of $523). Flying from Austin to Porto in June is currently the most expensive (average of $1,033). 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.

What is the cheapest time of day to fly from AUS to OPO?

Find hourly flight availability from Austin to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

One of the essential ways to save on airfare from Austin to Porto is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 27% on airfare.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from Austin to Porto, such as Delta, KLM, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,826 reviews
Delta
8.0
Very good
7,979 reviews

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Austin to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Austin to Porto round-trip?

    United Airlines, at $590, was found to be the cheapest airline from Austin to Porto.Alternate airlines to your destination round-trip include Iberia and Lufthansa. You may be able to fly from Austin to Porto for 43% less than the average price by searching for these airlines.

  • Can I find deals for flights from Austin to Porto that include hotel bookings?

    Yes. In addition to deals on Austin to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Porto.

  • Can I find deals for business class flights from Austin to Porto?

    Yes. Cheapflights offers flight deals from Austin to Porto 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 Austin to Porto?

    Currently, January is the cheapest month in which you can book a flight from Austin to Porto (average of $523). Flying from Austin to Porto in June is currently the most expensive (average of $1,033). 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 Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Austin to Porto

Discover the top 3 airlines that operate flights from Austin to Porto. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$597Average$1,093FlexibilityNo cancel feeOn-time75%
DeltaCheapest$655Average$803FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$691Average$1,179FlexibilityNo cancel feeOn-time69%

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