OPO - AUS

$417 Find Cheap Flights from Porto to Austin

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Austin departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Austin

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Austin, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Austin, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Porto to Austin (OPO-AUS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Austin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to Austin

Tue, Sep 9 - Tue, Sep 30
Lufthansa Logo
6:00 am - 8:25 pmOPO-AUS
20h 25m2 stops
Lufthansa Logo
2:03 pm - 9:45 amAUS-OPO
13h 42m1 stop
$815Lufthansa
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Sat, Sep 13 - Sat, Sep 20
American Airlines Logo
12:20 pm - 11:38 pmOPO-AUS
17h 18m2 stops
American Airlines Logo
7:20 am - 7:35 amAUS-OPO
18h 15m2 stops
$819American Airlines
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Tue, Sep 9 - Wed, Oct 8
American Airlines Logo
12:20 pm - 10:49 pmOPO-AUS
16h 29m2 stops
American Airlines Logo
7:00 am - 7:35 amAUS-OPO
18h 35m2 stops
$826American Airlines
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Tue, Sep 9 - Tue, Sep 30
United Airlines Logo
12:50 pm - 7:55 pmOPO-AUS
13h 05m1 stop
United Airlines Logo
2:03 pm - 9:45 amAUS-OPO
13h 42m1 stop
$832United Airlines
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Sat, Sep 13 - Sat, Sep 20
Delta Logo
6:05 am - 4:00 pmOPO-AUS
15h 55m1 stop
Delta Logo
2:30 pm - 3:30 pmAUS-OPO
19h 00m2 stops
$847Delta
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Fri, Sep 12 - Fri, Sep 19
United Airlines Logo
12:35 pm - 10:05 pmOPO-AUS
15h 30m1 stop
United Airlines Logo
7:45 pm - 6:55 amAUS-OPO
29h 10m2 stops
$848United Airlines
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Sat, Sep 13 - Sat, Sep 20
KLM Logo
6:05 am - 4:00 pmOPO-AUS
15h 55m1 stop
KLM Logo
6:00 pm - 10:40 amAUS-OPO
34h 40m1 stop
$853KLM
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Wed, Sep 10 - Thu, Oct 2
KLM Logo
11:35 am - 4:00 pmOPO-AUS
34h 25m1 stop
KLM Logo
6:09 pm - 3:35 pmAUS-OPO
15h 26m2 stops
$860KLM
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Fri, Sep 12 - Fri, Sep 19
Logo
8:40 am - 10:30 amOPO-AUS
31h 50m3 stops
Logo
12:02 pm - 6:50 pmAUS-OPO
24h 48m2 stops
$1,004
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Fri, Sep 12 - Fri, Sep 19
Logo
8:40 am - 10:30 amOPO-AUS
31h 50m3 stops
Logo
5:45 am - 6:50 pmAUS-OPO
31h 05m3 stops
$1,044
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Booking Insights

KAYAK's insights & trends for Porto to Austin flights

Get data-powered insights and trends into flights from Porto to Austin to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Porto to Austin?

The average price of all round-trip flights from Porto to Austin clicked on KAYAK for each day over the last 12 months.

When flying from Porto to Austin, you should consider leaving on a Tuesday and avoid Wednesdays if you are looking for the best rates. For your return to Porto, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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Good to know

Cheapest flight$417
Flight from Porto to Austin

When to book flights from Porto to Austin

Are your dates flexible? Find out the best times to travel from Porto to Austin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Porto to Austin

  • What is the cheapest flight from Porto to Austin?

    In the last 3 days, the lowest price for a flight from Porto to Austin was $417 for a one-way ticket and $815 for a round-trip.

  • Do I need a passport to fly between Porto and Austin?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Porto and on arrival in Austin.

  • Which airports will I be using when flying from Porto to Austin?

    On your way to Austin, you’ll fly out from Porto. You’ll be landing at Austin Bergstrom.

  • Which aircraft models fly most regularly from Porto to Austin?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Porto to Austin?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Porto and Austin, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Porto to Austin?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Austin.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Austin?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Porto is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to Austin?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Porto with another airline. Booking your flights between Porto and AUS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Austin?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Porto to Austin

 
See real verified KAYAK customer reviews for airlines flying from Porto to Austin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Porto to Austin? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1383 reviews
8.4Crew
7.1Entertainment
7.8Boarding
7.7Comfort
7.3Food
Airline reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

6.0 GoodSimon, Jul 2025STR - AMS
Read more KLM reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Everything you need to know for your flight from Porto to Austin

Information on your arrival and departure airports

Porto (OPO)
Austin (AUS)

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