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Cheap flights from Austin to Porto from $344

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Porto departing on 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Austin to Porto (AUS-OPO)

Cheap round-trip flights

United Airlines Logo
3:00 pm - 9:30 amAUS-OPO
12h 30m1 stop
United Airlines Logo
6:00 am - 12:14 pmOPO-AUS
36h 14m2 stops
$586United Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
United Airlines Logo
12:17 pm - 9:30 amAUS-OPO
15h 13m2 stops
United Airlines Logo
6:00 am - 12:14 pmOPO-AUS
36h 14m2 stops
$591United Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
United Airlines Logo
3:00 pm - 9:30 amAUS-OPO
12h 30m1 stop
United Airlines Logo
12:35 pm - 8:36 amOPO-AUS
26h 01m2 stops
$597United Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Logo
6:00 am - 9:30 amAUS-OPO
21h 30m1 stop
Logo
12:30 pm - 2:15 pmOPO-AUS
31h 45m1 stop
$599
Find Deal
Wed, Nov 19 - Wed, Nov 26
Lufthansa Logo
11:40 am - 9:30 amAUS-OPO
15h 50m1 stop
Lufthansa Logo
4:15 pm - 2:15 pmOPO-AUS
28h 00m1 stop
$611Lufthansa
Find Deal
Wed, Nov 19 - Wed, Nov 26
Logo
4:10 pm - 11:40 amAUS-OPO
13h 30m1 stop
Logo
12:35 pm - 11:55 pmOPO-AUS
17h 20m1 stop
$665
Find Deal
Thu, Nov 6 - Tue, Nov 11
Lufthansa Logo
4:10 pm - 11:40 amAUS-OPO
13h 30m1 stop
Lufthansa Logo
12:35 pm - 11:55 pmOPO-AUS
17h 20m1 stop
$680Lufthansa
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Thu, Nov 6 - Tue, Nov 11
Delta Logo
7:30 am - 10:30 amAUS-OPO
21h 00m2 stops
Delta Logo
6:00 am - 10:18 amOPO-AUS
34h 18m2 stops
$873Delta
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Wed, Dec 24 - Wed, Dec 31
Delta Logo
7:30 am - 10:30 amAUS-OPO
21h 00m2 stops
Delta Logo
11:15 am - 4:10 pmOPO-AUS
34h 55m1 stop
$906Delta
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Wed, Dec 24 - Wed, Dec 31
KLM Logo
6:05 pm - 10:25 pmAUS-OPO
22h 20m1 stop
KLM Logo
6:35 am - 4:10 pmOPO-AUS
15h 35m1 stop
$1,022KLM
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Thu, Dec 25 - Thu, Jan 1

Lufthansa flights from Austin to Porto

Our best Lufthansa deals on Austin to Porto flight tickets
Lufthansa
Nov 19
AUS11:40 amAustin Bergstrom
15h 50m
1 stop
OPO9:30 amPorto
Nov 26
OPO4:15 pmPorto
28h 00m
1 stop
AUS2:15 pmAustin Bergstrom
$611
Find similar
Lufthansa
Nov 6
AUS4:10 pmAustin Bergstrom
13h 30m
1 stop
OPO11:40 amPorto
Nov 11
OPO12:35 pmPorto
17h 20m
1 stop
AUS11:55 pmAustin Bergstrom
$680
Find similar
Lufthansa
Nov 6
AUS4:10 pmAustin Bergstrom
16h 35m
1 stop
OPO2:45 pmPorto
Nov 11
OPO12:35 pmPorto
17h 20m
1 stop
AUS11:55 pmAustin Bergstrom
$725
Find similar

United Airlines flights from Austin to Porto

Our best United Airlines deals on Austin to Porto flight tickets
United Airlines
Nov 19
AUS3:00 pmAustin Bergstrom
12h 30m
1 stop
OPO9:30 amPorto
Nov 26
OPO6:00 amPorto
36h 14m
2 stops
AUS12:14 pmAustin Bergstrom
$586
Find similar
United Airlines
Nov 19
AUS12:17 pmAustin Bergstrom
15h 13m
2 stops
OPO9:30 amPorto
Nov 26
OPO6:00 amPorto
36h 14m
2 stops
AUS12:14 pmAustin Bergstrom
$591
Find similar
United Airlines
Nov 19
AUS3:00 pmAustin Bergstrom
12h 30m
1 stop
OPO9:30 amPorto
Nov 26
OPO12:35 pmPorto
26h 01m
2 stops
AUS8:36 amAustin Bergstrom
$597
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Austin to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

3:00 pm-9:30 am

1 stop12h 30m

Porto

Wed 11/26

6:00 am-12:14 pm

2 stops36h 14m

$586

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

12:17 pm-9:30 am

2 stops15h 13m

Porto

Wed 11/26

6:00 am-12:14 pm

2 stops36h 14m

$591

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

3:00 pm-9:30 am

1 stop12h 30m

Porto

Wed 11/26

12:35 pm-8:36 am

2 stops26h 01m

$597

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

6:00 am-9:30 am

1 stop21h 30m

Porto

Wed 11/26

12:30 pm-2:15 pm

1 stop31h 45m

$599

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/19

11:40 am-9:30 am

1 stop15h 50m

Porto

Wed 11/26

4:15 pm-2:15 pm

1 stop28h 00m

$611

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 11/6

4:10 pm-11:40 am

1 stop13h 30m

Porto

Tue 11/11

12:35 pm-11:55 pm

1 stop17h 20m

$665

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 11/6

4:10 pm-11:40 am

1 stop13h 30m

Porto

Tue 11/11

12:35 pm-11:55 pm

1 stop17h 20m

$680

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 12/24

7:30 am-10:30 am

2 stops21h 00m

Porto

Wed 12/31

6:00 am-10:18 am

2 stops34h 18m

$873

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 12/24

7:30 am-10:30 am

2 stops21h 00m

Porto

Wed 12/31

11:15 am-4:10 pm

1 stop34h 55m

$906

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Thu 12/25

6:05 pm-10:25 pm

1 stop22h 20m

Porto

Thu 1/1

6:35 am-4:10 pm

1 stop15h 35m

$1,022

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Austin to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Austin, with most prices found around $692. If you aren’t able to travel during the month of February, then book flights to Porto from Austin during November instead. Flights to Porto in November, while not as cheap as those in February, still average around $694.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Wednesday when prices can be found for as low as $988. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,303. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

At noon is the cheapest time of day to fly from Austin to Porto when you can find flight prices for as low as $1,012. Flying to Porto at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,381 on average. Flights to Porto from Austin in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Austin to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Austin to Porto (AUS to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to Porto

Direct flights

None
There are no direct flights from Austin to Porto. There are no popular flight routes from Austin to Porto.
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  • How far is Austin Bergstrom to Porto by plane?

    Austin Bergstrom and Porto are 4833.8 mi apart from one another. In terms of flight time, this usually takes a little over 11h 12m.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to Porto Airport?

    Prices for flights from Austin Bergstrom Airport to Porto Airport are updated daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to Porto Airport?

  • How old do you have to be to fly from Austin Bergstrom Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Austin Bergstrom Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Austin to Porto?

Best airlines flying from Austin to Porto

Compare and see reviews for airlines that fly from Austin to Porto with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $597Free CancellationRating
7.8
1,388 reviews
Search KLM flights
United AirlinesPriceFrom $673Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
DeltaPriceFrom $686Free CancellationRating
7.9
7,981 reviews
Search Delta flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Guimarães
Lamego
Esposende
Chaves
Arcos de Valdevez
Espinho
Viseu
Ponte de Lima
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Austin to Porto?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Austin to Porto. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Austin to Porto with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Porto from Austin with this policy.

How can momondo help me find flights from Austin to Porto?

momondo provides multiple filters to help you find the best flight to Porto from Austin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Austin to Porto right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Austin to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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