HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Austin

$712+ Cheap flights from Porto (OPO) to Austin (AUS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — AUS
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to Austin with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 septiembre 11, 2025.

Round-trip from

$712
(Mytrip)

Popular in

December

Cheapest in

March

Average price

$835
From Porto to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 septiembre 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/36:15 amOPO - AUS
3 stops35h 02mMultiple Airlines
lun. 11/1010:35 amAUS - OPO
3 stops28h 40mMultiple Airlines
Deal found 9/10$712
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/36:30 amOPO - AUS
1 stop15h 40mDelta
lun. 11/105:40 amAUS - OPO
2 stops22h 35mDelta
Deal found 9/11$722
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/36:30 amOPO - AUS
1 stop15h 40mKLM
lun. 11/106:05 pmAUS - OPO
1 stop34h 25mKLM
Deal found 9/11$727
This KLM deal was found by Cheapflights users on 9/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/511:15 amOPO - AUS
1 stop34h 55mKLM
dom. 11/96:34 pmAUS - OPO
2 stops14h 51mKLM
Deal found 9/10$730
This KLM deal was found by Cheapflights users on 9/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/256:05 amOPO - AUS
1 stop15h 55mKLM
sáb. 11/17:05 pmAUS - OPO
1 stop22h 20mKLM
Deal found 9/10$771
This lol.travel deal was found by Cheapflights users on 9/9. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/512:35 pmOPO - AUS
1 stop17h 20mUnited Airlines
dom. 11/96:00 amAUS - OPO
1 stop21h 30mUnited Airlines
Deal found 9/9$806

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 septiembre 11, 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

lun. 11/3

6:15 am-11:17 am

3 stops35h 02m

Austin Bergstrom

lun. 11/10

10:35 am-9:15 pm

3 stops28h 40m

$712

PortoAustin

OPO - AUS

OPOAUS

Porto

lun. 11/3

6:30 am-4:10 pm

1 stop15h 40m

Austin Bergstrom

lun. 11/10

5:40 am-10:15 am

2 stops22h 35m

$722

PortoAustin

OPO - AUS

OPOAUS

Porto

mié. 11/5

11:15 am-4:10 pm

1 stop34h 55m

Austin Bergstrom

dom. 11/9

10:59 am-10:30 am

2 stops17h 31m

$724

PortoAustin

OPO - AUS

OPOAUS

Porto

lun. 11/3

6:30 am-4:10 pm

1 stop15h 40m

Austin Bergstrom

lun. 11/10

6:05 pm-10:30 am

1 stop34h 25m

$727

PortoAustin

OPO - AUS

OPOAUS

Porto

mié. 11/5

6:00 am-9:25 pm

2 stops21h 25m

Austin Bergstrom

dom. 11/9

8:00 am-10:30 am

2 stops20h 30m

$729

PortoAustin

OPO - AUS

OPOAUS

Porto

mié. 11/5

11:15 am-4:10 pm

1 stop34h 55m

Austin Bergstrom

dom. 11/9

6:34 pm-3:25 pm

2 stops14h 51m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 septiembre 11, 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

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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 15h 40m. 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 10% 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, August is the cheapest month in which you can book a flight from Porto to Austin (average of $285). 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
Round Rock
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Cedar Park
Canyon Lake
Seguin
Horseshoe Bay

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$809Average$1,055FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.