$360 Find Cheap Flights from Portugal 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 to Austin departing on 9/11. 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 for flights to Austin, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Austin, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Portugal to Austin

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portugal 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 Portugal to Austin

Thu, Sep 4 - Mon, Sep 8
Logo
6:40 am - 12:20 pmOPO-AUS
35h 40m3 stops
Logo
12:05 pm - 4:45 pmAUS-OPO
22h 40m2 stops
$762
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Thu, Sep 4 - Mon, Sep 8
Logo
6:40 am - 12:20 pmOPO-AUS
35h 40m3 stops
Logo
1:15 pm - 3:10 pmAUS-OPO
19h 55m3 stops
$792
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Thu, Sep 4 - Mon, Sep 8
United Airlines Logo
6:00 am - 8:25 pmOPO-AUS
20h 25m2 stops
United Airlines Logo
8:25 am - 6:55 amAUS-OPO
16h 30m1 stop
$794United Airlines
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Fri, Oct 10 - Wed, Oct 22
Logo
8:50 am - 9:57 amLIS-AUS
31h 07m2 stops
Logo
1:09 pm - 10:50 amAUS-LIS
15h 41m1 stop
$794
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Fri, Sep 26 - Sat, Oct 11
United Airlines Logo
5:05 am - 2:20 pmLIS-AUS
15h 15m1 stop
United Airlines Logo
7:10 am - 10:35 amAUS-LIS
21h 25m1 stop
$797United Airlines
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Thu, Feb 12 - Mon, Feb 16
Lufthansa Logo
5:00 am - 9:45 pmLIS-AUS
22h 45m2 stops
Lufthansa Logo
11:50 am - 8:10 amAUS-LIS
14h 20m1 stop
$801Lufthansa
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Thu, Sep 4 - Mon, Sep 8
Lufthansa Logo
12:10 pm - 2:20 pmOPO-AUS
32h 10m1 stop
Lufthansa Logo
11:10 am - 6:55 amAUS-OPO
13h 45m1 stop
$808Lufthansa
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Thu, Feb 12 - Mon, Feb 16
American Airlines Logo
10:55 am - 4:20 pmLIS-AUS
35h 25m2 stops
American Airlines Logo
5:10 pm - 2:55 pmAUS-LIS
15h 45m2 stops
$814American Airlines
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Fri, Oct 10 - Wed, Oct 22
KLM Logo
7:30 pm - 4:00 pmLIS-AUS
26h 30m1 stop
KLM Logo
11:29 am - 8:00 amAUS-LIS
14h 31m1 stop
$846KLM
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Thu, Sep 4 - Thu, Oct 2
KLM Logo
6:30 am - 4:00 pmOPO-AUS
15h 30m1 stop
KLM Logo
5:00 pm - 3:30 pmAUS-OPO
16h 30m2 stops
$857KLM
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Booking Insights

KAYAK's insights & trends for flights to Austin

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

What is the cheapest month to fly to Austin?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Austin, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Austin is April, where tickets cost $763 on average for return flights. On the other hand, the most expensive months are August and June, where the average cost of tickets from Portugal is $1,157 and $1,148 respectively. For one-way flights, the best month to travel is April with an average price of $763.

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Good to know

Low seasonMay
Cheapest flight$360
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Porto to Austin

FAQs - booking Austin flights

  • How far is Austin Bergstrom Airport from central Austin?

    Central Austin is 7 miles away from Austin Bergstrom Airport.

  • What is the name of Austin’s airport?

    Austin is served by Austin Bergstrom Airport, also commonly referred to as Austin Bergstrom or Bergstrom Intl. The airport code is AUS.

  • What is the cheapest day to fly to Austin?

    Based on KAYAK data, the cheapest day to fly to Austin is Monday where round-trip tickets can be as cheap as $794. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $1,055 on average.

  • How does KAYAK find such low prices on flights 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 to Austin.

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Austin?

    The cheapest time of day to fly to Austin is generally in the morning, when round-trip flights cost $919 on average. The most expensive time of day to fly to Austin is generally in the morning, which is peak travel time and where the average cost of a ticket is $919.

  • How many direct flights to Austin are there each week?

    Each week there are around 1,845 direct flights from within Portugal to Austin. The most common day for departures is Sunday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Austin

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Austin flight deals.

Reviews of the top airline flying from Portugal to Austin

 
See real verified KAYAK customer reviews for airlines flying to Austin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Austin. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 1388 reviews
7.7Comfort
7.3Food
8.4Crew
7.1Entertainment
7.8Boarding
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.

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.

Klm start boarding while somw air issue in the plan

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

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.

You should not have to pay for WiFi in business class

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
Georgetown
Cedar Park
Seguin
Dripping Springs
Bastrop
Canyon Lake
Horseshoe Bay
Buda
Flatonia

Everything you need to know for your flight to Austin

Information on the airport you'll fly into in Austin

Austin (AUS)

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