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$344+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — OPO
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
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 June 23, 2025.

Round-trip from

$657
(Iberia)

One-way from

$344
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,587
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 ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 23, 2025.

This Iberia deal was found by Cheapflights users on 6/22. 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.
Fri 12/55:25 amAUS - OPO
2 stops20h 15mIberia
Tue 12/98:40 pmOPO - AUS
2 stops27h 27mIberia
Deal found 6/22$657
This United Airlines deal was found by Cheapflights users on 6/21. 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 8/610:00 amAUS - OPO
1 stop17h 20mUnited Airlines
Wed 8/276:00 amOPO - AUS
2 stops20h 25mUnited Airlines
Deal found 6/21$744
This Justfly.com deal was found by Cheapflights users on 6/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/214:05 pmAUS - OPO
1 stop17h 40mMultiple Airlines
Tue 9/912:50 pmOPO - AUS
1 stop13h 05mMultiple Airlines
Deal found 6/21$822
This Gurufare deal was found by Cheapflights users on 6/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/214:05 pmAUS - OPO
1 stop17h 40mLufthansa
Mon 9/14:35 pmOPO - AUS
2 stops33h 50mLufthansa
Deal found 6/21$858
This Gotogate deal was found by Cheapflights users on 6/21. 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.
Tue 8/512:50 pmAUS - OPO
2 stops38h 30mAir Canada
Tue 8/1212:50 pmOPO - AUS
2 stops28h 54mAir Canada
Deal found 6/21$933
This KLM deal was found by Cheapflights users on 6/21. 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 8/216:00 pmAUS - OPO
1 stop34h 40mKLM
Mon 9/16:30 amOPO - AUS
1 stop15h 30mKLM
Deal found 6/21$941
This Delta deal was found by Cheapflights users on 6/22. 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.
Sun 7/201:28 pmAUS - OPO
2 stops20h 02mDelta
Sun 7/275:00 amOPO - AUS
2 stops23h 27mDelta
Deal found 6/22$1,060
This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/16:09 amAUS - OPO
2 stops31h 21mBritish Airways
Fri 7/1111:15 amOPO - AUS
2 stops18h 44mBritish Airways
Deal found 6/21$2,792

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 June 23, 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

Fri 12/5

5:25 am-7:40 am

2 stops20h 15m

Porto

Tue 12/9

8:40 pm-6:07 pm

2 stops27h 27m

$657

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 8/6

10:00 am-9:20 am

1 stop17h 20m

Porto

Wed 8/27

6:00 am-8:25 pm

2 stops20h 25m

$744

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 8/21

4:05 pm-3:45 pm

1 stop17h 40m

Porto

Tue 9/9

12:50 pm-7:55 pm

1 stop13h 05m

$822

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 8/21

4:05 pm-3:45 pm

1 stop17h 40m

Porto

Mon 9/1

4:35 pm-8:25 pm

2 stops33h 50m

$858

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 8/5

12:50 pm-9:20 am

2 stops38h 30m

Porto

Tue 8/12

12:50 pm-11:44 am

2 stops28h 54m

$933

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 8/21

6:00 pm-10:40 am

1 stop34h 40m

Porto

Mon 9/1

6:30 am-4:00 pm

1 stop15h 30m

$941

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Sun 7/20

1:28 pm-3:30 pm

2 stops20h 02m

Porto

Sun 7/27

5:00 am-10:27 pm

2 stops23h 27m

$1,060

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Sat 7/19

5:45 pm-10:50 am

1 stop35h 05m

Porto

Wed 7/30

12:20 pm-11:58 pm

2 stops17h 38m

$3,571

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Sun 7/13

10:38 am-7:00 am

3 stops38h 22m

$344

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 9/30

12:05 pm-9:45 am

2 stops15h 40m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 13 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 $1,040). 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 June 23, 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 June 23, 2025.
To help decide which airline to fly from Austin to Porto, see what other customers have to say about Delta, KLM and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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
7,966 reviews
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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
1,365 reviews
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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
8,831 reviews
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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
9,604 reviews
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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!
TAP AIR PORTUGAL
7.1
Good
1,900 reviews
Delta
8.0
Very good
7,966 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.3

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?

    Iberia, at $657, was found to be the cheapest airline from Austin to Porto.Alternate airlines to your destination round-trip include United Airlines and Lufthansa. You may be able to fly from Austin to Porto for 37% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Austin to Porto one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $583. Users have also found prices from $1,519 and $1,740 on Lufthansa and KLM, respectively.

  • 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 $1,040). 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
Aveiro
Coimbra
Matosinhos
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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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$597Average$1,093FlexibilityNo cancel feeOn-time75%
DeltaCheapest$655Average$803FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$754Average$1,168FlexibilityNo cancel feeOn-time69%

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