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Cheap flights from Porto to Austin from $405

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 9/16. 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

Find the cheapest flights from Porto to Austin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Transat Logo
1:30 pm - 3:25 pmOPO  Porto-AUS Austin Bergstrom
31h 55m1 stop Toronto Pearson Intl
Air Transat Logo
4:25 pm - 11:45 amAUS  Austin Bergstrom-OPO Porto
13h 20m1 stop Toronto Pearson Intl
$773Air Transat
Thu, Sep 10 - Mon, Sep 14
Air Transat Logo
1:30 pm - 3:25 pmOPO  Porto-AUS Austin Bergstrom
31h 55m1 stop Toronto Pearson Intl
Air Transat Logo
4:25 pm - 11:45 amAUS  Austin Bergstrom-OPO Porto
13h 20m1 stop Toronto Pearson Intl
$780Air Transat
Thu, Sep 10 - Mon, Sep 14
Air Transat Logo
1:30 pm - 3:25 pmOPO  Porto-AUS Austin Bergstrom
31h 55m1 stop Toronto Pearson Intl
Air Transat Logo
4:25 pm - 11:45 amAUS  Austin Bergstrom-OPO Porto
13h 20m1 stop Toronto Pearson Intl
$790Air Transat
Thu, Sep 10 - Mon, Sep 14
Multiple Airlines Logo
9:30 pm - 10:03 amOPO  Porto-AUS Austin Bergstrom
42h 33m2 stops London Stansted Orlando
Multiple Airlines Logo
4:25 pm - 11:45 amAUS  Austin Bergstrom-OPO Porto
13h 20m1 stop Toronto Pearson Intl
$937Multiple Airlines
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
6:00 am - 8:44 pmOPO  Porto-AUS Austin Bergstrom
20h 44m2 stops Frankfurt am Main Denver Intl
United Airlines Logo
9:39 am - 6:55 amAUS  Austin Bergstrom-OPO Porto
15h 16m2 stops Houston George Bush Intcntl Newark
$961United Airlines
Thu, Sep 10 - Mon, Sep 14
Lufthansa Logo
6:00 am - 8:34 pmOPO  Porto-AUS Austin Bergstrom
20h 34m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
Lufthansa Logo
10:40 am - 9:45 amAUS  Austin Bergstrom-OPO Porto
17h 05m1 stop Newark
$963Lufthansa
Thu, Sep 10 - Mon, Sep 14
Delta Logo
5:00 am - 5:05 pmOPO  Porto-AUS Austin Bergstrom
17h 05m1 stop Amsterdam Schiphol
Delta Logo
11:12 am - 10:35 amAUS  Austin Bergstrom-OPO Porto
17h 23m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
$964Delta
Mon, Oct 26 - Tue, Nov 3
United Airlines Logo
6:00 am - 8:44 pmOPO  Porto-AUS Austin Bergstrom
20h 44m2 stops Frankfurt am Main Denver Intl
United Airlines Logo
9:39 am - 6:55 amAUS  Austin Bergstrom-OPO Porto
15h 16m2 stops Houston George Bush Intcntl Newark
$965United Airlines
Thu, Sep 10 - Mon, Sep 14
Delta Logo
5:00 am - 10:32 pmOPO  Porto-AUS Austin Bergstrom
22h 32m2 stops Amsterdam Schiphol Boston Logan Intl
Delta Logo
12:02 pm - 10:35 amAUS  Austin Bergstrom-OPO Porto
16h 33m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle
$969Delta
Tue, Oct 27 - Wed, Nov 4
Delta Logo
5:00 am - 10:32 pmOPO  Porto-AUS Austin Bergstrom
22h 32m2 stops Amsterdam Schiphol Boston Logan Intl
Delta Logo
7:30 am - 9:05 amAUS  Austin Bergstrom-OPO Porto
19h 35m1 stop New York John F Kennedy Intl
$972Delta
Tue, Oct 27 - Wed, Nov 4

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Air Transat flights from Porto to Austin

Our best Air Transat deals on Porto to Austin flight tickets
Air Transat
Sep 10
OPO1:30 pmPorto
31h 55m
1 stop
AUS3:25 pmAustin Bergstrom
Sep 14
AUS4:25 pmAustin Bergstrom
13h 20m
1 stop
OPO11:45 amPorto
$773
Air Transat
Sep 10
OPO1:30 pmPorto
31h 55m
1 stop
AUS3:25 pmAustin Bergstrom
Sep 14
AUS4:25 pmAustin Bergstrom
13h 20m
1 stop
OPO11:45 amPorto
$780
Air Transat
Sep 10
OPO1:30 pmPorto
31h 55m
1 stop
AUS3:25 pmAustin Bergstrom
Sep 14
AUS4:25 pmAustin Bergstrom
13h 20m
1 stop
OPO11:45 amPorto
$790

United Airlines flights from Porto to Austin

Our best United Airlines deals on Porto to Austin flight tickets
United Airlines
Sep 10
OPO6:00 amPorto
20h 44m
2 stops
AUS8:44 pmAustin Bergstrom
Sep 14
AUS9:39 amAustin Bergstrom
15h 16m
2 stops
OPO6:55 amPorto
$961
United Airlines
Sep 10
OPO6:00 amPorto
20h 44m
2 stops
AUS8:44 pmAustin Bergstrom
Sep 14
AUS9:39 amAustin Bergstrom
15h 16m
2 stops
OPO6:55 amPorto
$965
United Airlines
Oct 28
OPO12:35 pmPorto
31h 30m
1 stop
AUS3:05 pmAustin Bergstrom
Nov 3
AUS10:45 amAustin Bergstrom
16h 45m
2 stops
OPO9:30 amPorto
$978

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 9, 2026.
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

Cheapest round-trip

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

1:30 pm-3:25 pm

1 stop31h 55m

Austin Bergstrom

Mon 9/14

4:25 pm-11:45 am

1 stop13h 20m

$773

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

1:30 pm-3:25 pm

1 stop31h 55m

Austin Bergstrom

Mon 9/14

4:25 pm-11:45 am

1 stop13h 20m

$780

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

1:30 pm-3:25 pm

1 stop31h 55m

Austin Bergstrom

Mon 9/14

4:25 pm-11:45 am

1 stop13h 20m

$790

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

9:30 pm-10:03 am

2 stops42h 33m

Austin Bergstrom

Mon 9/14

4:25 pm-11:45 am

1 stop13h 20m

$937

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

6:00 am-8:44 pm

2 stops20h 44m

Austin Bergstrom

Mon 9/14

9:39 am-6:55 am

2 stops15h 16m

$961

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

6:00 am-8:34 pm

2 stops20h 34m

Austin Bergstrom

Mon 9/14

10:40 am-9:45 am

1 stop17h 05m

$963
Quickest round-trip

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Mon 10/26

5:00 am-5:05 pm

1 stop17h 05m

Austin Bergstrom

Tue 11/3

11:12 am-10:35 am

2 stops17h 23m

$964

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Thu 9/10

6:00 am-8:44 pm

2 stops20h 44m

Austin Bergstrom

Mon 9/14

9:39 am-6:55 am

2 stops15h 16m

$965

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Tue 10/27

5:00 am-10:32 pm

2 stops22h 32m

Austin Bergstrom

Wed 11/4

12:02 pm-10:35 am

2 stops16h 33m

$969

PortoAustin

OPO Porto - AUS Austin Bergstrom

OPOAUS

Porto

Tue 10/27

5:00 am-10:32 pm

2 stops22h 32m

Austin Bergstrom

Wed 11/4

7:30 am-9:05 am

1 stop19h 35m

$972

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Can stopping save me money on Porto to Austin flights?

You could potentially save up to 68% 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

Fastest flight time

23h 38m

Direct flights

None
The fastest flight from Porto to Austin takes 23h 38m
There are no direct flights from Porto to Austin. There are no popular flight routes from Porto to Austin.
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Frequently asked questions about flying from Porto to Austin

  • 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 23h 38m.

  • 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 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.

Traveling to a place near Austin?

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