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Cheap flights from Porto to Austin from $446

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Austin departing on 10/3. 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 Porto to Austin (OPO-AUS)

Cheap round-trip flights

United Airlines Logo
6:00 am - 8:25 pmOPO-AUS
20h 25m2 stops
United Airlines Logo
9:44 am - 9:45 amAUS-OPO
18h 01m2 stops
$842United Airlines
Find Deal
Tue, Sep 9 - Wed, Oct 8
United Airlines Logo
9:35 am - 9:20 pmOPO-AUS
17h 45m2 stops
United Airlines Logo
12:17 pm - 9:45 amAUS-OPO
15h 28m2 stops
$847United Airlines
Find Deal
Wed, Sep 10 - Thu, Oct 2
United Airlines Logo
12:50 pm - 7:55 pmOPO-AUS
13h 05m1 stop
United Airlines Logo
12:17 pm - 9:45 amAUS-OPO
15h 28m2 stops
$859United Airlines
Find Deal
Tue, Sep 9 - Wed, Oct 8
United Airlines Logo
12:50 pm - 7:55 pmOPO-AUS
13h 05m1 stop
United Airlines Logo
2:05 pm - 9:45 amAUS-OPO
13h 40m1 stop
$929United Airlines
Find Deal
Tue, Sep 9 - Wed, Oct 8

United Airlines flights from Porto to Austin

Our best United Airlines deals on Porto to Austin flight tickets
United Airlines
Sep 9
OPO6:00 amPorto
20h 25m
2 stops
AUS8:25 pmAustin Bergstrom
Oct 8
AUS9:44 amAustin Bergstrom
18h 01m
2 stops
OPO9:45 amPorto
$842
Find similar
United Airlines
Sep 10
OPO9:35 amPorto
17h 45m
2 stops
AUS9:20 pmAustin Bergstrom
Oct 2
AUS12:17 pmAustin Bergstrom
15h 28m
2 stops
OPO9:45 amPorto
$847
Find similar
United Airlines
Sep 9
OPO12:50 pmPorto
13h 05m
1 stop
AUS7:55 pmAustin Bergstrom
Oct 8
AUS12:17 pmAustin Bergstrom
15h 28m
2 stops
OPO9:45 amPorto
$859
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Porto to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 9/9

6:00 am-8:25 pm

2 stops20h 25m

Austin Bergstrom

Wed 10/8

9:44 am-9:45 am

2 stops18h 01m

$842

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 9/10

9:35 am-9:20 pm

2 stops17h 45m

Austin Bergstrom

Thu 10/2

12:17 pm-9:45 am

2 stops15h 28m

$847

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 9/9

12:50 pm-7:55 pm

1 stop13h 05m

Austin Bergstrom

Wed 10/8

12:17 pm-9:45 am

2 stops15h 28m

$859

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 9/9

12:50 pm-7:55 pm

1 stop13h 05m

Austin Bergstrom

Wed 10/8

2:05 pm-9:45 am

1 stop13h 40m

$929

PortoAustin

OPO - AUS

OPOAUS

Porto

Fri 10/3

6:05 am-11:02 pm

3 stops46h 57m

$446

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 10/1

10:00 am-6:03 pm

2 stops38h 03m

$449

PortoAustin

OPO - AUS

OPOAUS

Porto

Wed 10/1

6:05 am-4:34 pm

3 stops40h 29m

$450

PortoAustin

OPO - AUS

OPOAUS

Porto

Thu 10/2

6:25 am-11:07 am

3 stops34h 42m

$453

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 9/30

4:05 pm-6:03 pm

3 stops55h 58m

$468

PortoAustin

OPO - AUS

OPOAUS

Porto

Tue 9/30

8:40 pm-3:50 pm

1 stop25h 10m

$739

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Austin from

How to get the cheapest flight ticket from Porto to Austin

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 day to depart on your flight to Austin?

The cheapest day to depart on your flight to Austin is on a Tuesday when prices can be found for as low as $872. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Porto to Austin for around $1,319.

Can stopping save me money on Porto to Austin flights?

You could potentially save up to 2% on your flight if you consider stops on a Porto to Austin flight.

When to book flights from Porto to Austin

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

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

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

Best Price Found

$446

Fastest flight time

13h 05m

Direct flights

None

Airports in Austin

1 airport
The best one-way flight to Austin from Porto in the past 72 hours is $446. The best round-trip flight deal from Porto to Austin found on momondo in the last 72 hours is $842.
The fastest flight from Porto to Austin takes 13h 05m
There are no direct flights from Porto to Austin. Popular non-direct route for this connection is Porto Airport - Austin Bergstrom Airport.
There is 1 airport near Austin: Austin Bergstrom (AUS)
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  • How far is Porto to Austin Bergstrom by plane?

    The straight-line distance from Porto to Austin Bergstrom is 4833.8 mi. By plane, this route typically takes 13h 05m.

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

    Prices for flights from Porto Airport to Austin Bergstrom Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Austin Bergstrom Airport.

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

    The required travel and health documents for your Austin Bergstrom Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Austin Bergstrom Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Porto to Austin

Compare and see reviews for airlines that fly from Porto to Austin with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $809Free CancellationRating
7.8
1,381 reviews
Search KLM flights

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
San Marcos
Round Rock
Wimberley
Georgetown
Canyon Lake
Marble Falls
Dripping Springs
Horseshoe Bay
Cedar Park
Pflugerville
Seguin
Kyle
Bastrop
Buda
Flatonia

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Porto to Austin. momondo saves you time and could save you money on your trip.

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

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

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

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

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

Yes momondo offers price alerts on flights to Austin from Porto. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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