OPO - AUS

$706 Find Cheap Flights from Porto to Austin

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Austin departing on 11/3. 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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Flight 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

Mon, Nov 3 - Mon, Nov 10
Multiple Airlines Logo
6:15 am - 11:17 amOPO-AUS
35h 02m3 stops
Multiple Airlines Logo
10:35 am - 5:00 pmAUS-OPO
24h 25m3 stops
$706Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Delta Logo
6:30 am - 4:10 pmOPO-AUS
15h 40m1 stop
Delta Logo
6:40 am - 10:15 amAUS-OPO
21h 35m2 stops
$724Delta
Find Deal
Mon, Nov 3 - Mon, Nov 10
KLM Logo
6:30 am - 4:10 pmOPO-AUS
15h 40m1 stop
KLM Logo
6:05 pm - 6:40 pmAUS-OPO
18h 35m1 stop
$729KLM
Find Deal
Fri, Oct 3 - Tue, Oct 7
Delta Logo
6:40 am - 10:43 pmOPO-AUS
22h 03m2 stops
Delta Logo
1:40 pm - 3:35 pmAUS-OPO
19h 55m2 stops
$735Delta
Find Deal
Mon, Nov 3 - Mon, Nov 10
American Airlines Logo
8:20 am - 9:45 pmOPO-AUS
19h 25m2 stops
American Airlines Logo
8:22 am - 7:40 amAUS-OPO
17h 18m2 stops
$749American Airlines
Find Deal
Fri, Feb 13 - Tue, Feb 17
Iberia Logo
8:40 pm - 8:22 amOPO-AUS
17h 42m2 stops
Iberia Logo
9:30 am - 11:45 amAUS-OPO
20h 15m2 stops
$775Iberia
Find Deal
Fri, Oct 3 - Tue, Oct 7
Lufthansa Logo
12:35 pm - 8:35 pmOPO-AUS
14h 00m1 stop
Lufthansa Logo
11:11 am - 9:45 amAUS-OPO
16h 34m1 stop
$818Lufthansa
Find Deal
Fri, Feb 13 - Tue, Feb 17
Delta Logo
11:15 am - 4:10 pmOPO-AUS
34h 55m1 stop
Delta Logo
12:15 pm - 10:30 amAUS-OPO
16h 15m2 stops
$877Delta
Find Deal
Fri, Oct 3 - Tue, Oct 7
Multiple Airlines Logo
7:00 am - 10:30 amOPO-AUS
33h 30m3 stops
Multiple Airlines Logo
10:00 am - 7:00 pmAUS-OPO
27h 00m3 stops
$1,094Multiple Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
Multiple Airlines Logo
4:00 pm - 10:30 amOPO-AUS
24h 30m3 stops
Multiple Airlines Logo
1:09 pm - 2:05 pmAUS-OPO
18h 56m2 stops
$1,254Multiple Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $724 (round-trip)
KLM
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$706
Multiple Airlines
Mon 11/3Mon 11/10
OPO - AUS • 3 stops
Cheapest one-way
Multiple Airlines
Wed 9/17
OPO - AUS • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
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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.

Good to know

Low seasonMarch
Cheapest flight$706
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 25% increase in price.
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 $706 for a round-trip ticket.

  • 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?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Porto and Austin, with SkyTeam 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 1386 reviews
7.8Boarding
7.7Comfort
8.4Crew
7.2Entertainment
7.3Food
Airline reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

2.0 MediocrePeter, Aug 2025SAN - AMS
Read more KLM reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

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.

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

Information on your arrival and departure airports

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