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Cheap flights from Austin to Porto from $392

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 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Austin to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:05 pm - 12:50 pm
AUS
-
OPO
18h 45m
2 stops
Multiple Airlines Logo
6:00 am - 11:11 am
OPO
-
AUS
35h 11m
2 stops
$721Multiple Airlines
Mon, Nov 23 - Thu, Dec 3
Iberia Logo
6:55 pm - 7:40 am
AUS
-
OPO
30h 45m
2 stops
Iberia Logo
8:40 pm - 9:39 pm
OPO
-
AUS
30h 59m
2 stops
$730Iberia
Tue, Jan 19 - Tue, Jan 26
Delta Logo
6:01 pm - 10:30 pm
AUS
-
OPO
22h 29m
1 stop
Delta Logo
5:00 am - 4:05 pm
OPO
-
AUS
17h 05m
1 stop
$736Delta
Mon, Nov 23 - Thu, Dec 3
Delta Logo
12:13 pm - 10:35 am
AUS
-
OPO
16h 22m
2 stops
Delta Logo
5:00 am - 4:05 pm
OPO
-
AUS
17h 05m
1 stop
$736Delta
Mon, Nov 23 - Thu, Dec 3
KLM Logo
6:01 pm - 3:25 pm
AUS
-
OPO
15h 24m
1 stop
KLM Logo
5:00 am - 4:05 pm
OPO
-
AUS
17h 05m
1 stop
$736KLM
Mon, Nov 23 - Thu, Dec 3
KLM Logo
6:01 pm - 3:25 pm
AUS
-
OPO
15h 24m
1 stop
KLM Logo
5:00 am - 4:05 pm
OPO
-
AUS
17h 05m
1 stop
$737KLM
Mon, Nov 23 - Thu, Dec 3
United Airlines Logo
7:15 am - 9:30 am
AUS
-
OPO
20h 15m
1 stop
United Airlines Logo
6:00 am - 11:38 pm
OPO
-
AUS
23h 38m
2 stops
$741United Airlines
Mon, Nov 23 - Thu, Dec 3
United Airlines Logo
12:25 pm - 9:30 am
AUS
-
OPO
15h 05m
2 stops
United Airlines Logo
6:00 am - 8:56 pm
OPO
-
AUS
20h 56m
2 stops
$745United Airlines
Mon, Nov 23 - Thu, Dec 3
Lufthansa Logo
3:55 pm - 11:45 am
AUS
-
OPO
13h 50m
1 stop
Lufthansa Logo
4:10 pm - 9:14 pm
OPO
-
AUS
35h 04m
2 stops
$755Lufthansa
Tue, Jan 19 - Tue, Jan 26
Lufthansa Logo
4:05 pm - 3:40 pm
AUS
-
OPO
17h 35m
1 stop
Lufthansa Logo
4:35 pm - 2:00 pm
OPO
-
AUS
27h 25m
1 stop
$887Lufthansa
Wed, Sep 23 - Tue, Oct 13

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Air Canada flights from Austin to Porto

Our best Air Canada deals on Austin to Porto flight tickets
Air Canada
Sep 26
AUS7:35 pmAustin Bergstrom
53h 25m
2 stops
OPO7:00 amPorto
Oct 13
OPO12:15 pmPorto
41h 44m
2 stops
AUS11:59 pmAustin Bergstrom
$859
Air Canada
Sep 26
AUS4:07 pmAustin Bergstrom
56h 53m
2 stops
OPO7:00 amPorto
Oct 14
OPO6:20 amPorto
34h 28m
2 stops
AUS10:48 amAustin Bergstrom
$876
Air Canada
Sep 24
AUS8:55 pmAustin Bergstrom
28h 15m
2 stops
OPO7:10 amPorto
Oct 13
OPO12:15 pmPorto
41h 44m
2 stops
AUS11:59 pmAustin Bergstrom
$913

Iberia flights from Austin to Porto

Our best Iberia deals on Austin to Porto flight tickets
Iberia
Jan 19
AUS6:55 pmAustin Bergstrom
30h 45m
2 stops
OPO7:40 amPorto
Jan 26
OPO8:40 pmPorto
30h 59m
2 stops
AUS9:39 pmAustin Bergstrom
$730
Iberia
Nov 21
AUS12:43 pmAustin Bergstrom
36h 57m
2 stops
OPO7:40 amPorto
Nov 26
OPO8:20 amPorto
22h 07m
2 stops
AUS12:27 amAustin Bergstrom
$765
Iberia
Sep 23
AUS12:02 pmAustin Bergstrom
17h 43m
2 stops
OPO11:45 amPorto
Oct 12
OPO8:40 pmPorto
32h 03m
2 stops
AUS10:43 pmAustin Bergstrom
$885

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 4, 2026.
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

Cheapest round-trip

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

12:05 pm-12:50 pm

2 stops18h 45m

Porto

Thu 12/3

6:00 am-11:11 am

2 stops35h 11m

$721

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 1/19

6:55 pm-7:40 am

2 stops30h 45m

Porto

Tue 1/26

8:40 pm-9:39 pm

2 stops30h 59m

$730

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

6:01 pm-10:30 pm

1 stop22h 29m

Porto

Thu 12/3

5:00 am-4:05 pm

1 stop17h 05m

$736

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

12:13 pm-10:35 am

2 stops16h 22m

Porto

Thu 12/3

5:00 am-4:05 pm

1 stop17h 05m

$736
Quickest round-trip

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

6:01 pm-3:25 pm

1 stop15h 24m

Porto

Thu 12/3

5:00 am-4:05 pm

1 stop17h 05m

$736

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

6:01 pm-3:25 pm

1 stop15h 24m

Porto

Thu 12/3

5:00 am-4:05 pm

1 stop17h 05m

$737

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

7:15 am-9:30 am

1 stop20h 15m

Porto

Thu 12/3

6:00 am-11:38 pm

2 stops23h 38m

$741

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

12:25 pm-9:30 am

2 stops15h 05m

Porto

Thu 12/3

6:00 am-8:56 pm

2 stops20h 56m

$745

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 1/19

3:55 pm-11:45 am

1 stop13h 50m

Porto

Tue 1/26

4:10 pm-9:14 pm

2 stops35h 04m

$755

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 9/23

4:05 pm-3:40 pm

1 stop17h 35m

Porto

Tue 10/13

4:35 pm-2:00 pm

1 stop27h 25m

$887

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 typical price of a round-trip flight between Austin and Porto?

Prices are currently low for flights on this route.

Typical prices usually range from $989 to $1,104.
The lowest price recently found on this route was $721.

What is the cheapest month to fly to Porto?

The month of March is, on average, the cheapest month to fly to Porto from Austin, with most prices found around $562. If you aren’t able to travel during the month of March, then book flights to Porto from Austin during February instead. Flights to Porto in February, while not as cheap as those in March, still average around $672.

Can stopping save me money on Austin to Porto flights?

You could potentially save up to 38% on your flight if you consider stops on a Austin to Porto flight.

How have Austin to Porto flight prices changed over time?

As of August 2026, prices for Austin to Porto flights are approximately 20% cheaper when compared to flights at the same time last year.

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

Fastest flight time

13h 20m

Direct flights

None
The fastest flight from Austin to Porto takes 13h 20m
There are no direct flights from Austin to Porto. There are no popular flight routes from Austin to Porto.
Search flight deals

Frequently asked questions about flying from Austin to Porto

  • 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 13h 20m.

  • 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
DeltaPriceFrom $478Free CancellationRating
7.8
8,482 reviews
Search Delta flights
KLMPriceFrom $532Free CancellationRating
7.8
1,552 reviews
Search KLM flights
United AirlinesPriceFrom $581Free CancellationRating
7.4
10,059 reviews
Search United Airlines flights
LufthansaPriceFrom $672Free CancellationRating
6.8
8,176 reviews
Search Lufthansa flights

Traveling to a place near Porto?

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