AUS - OPO

$375 Find Cheap Flights from Austin to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Austin to Porto departing on 8/18. 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, 0 bags

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

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

Cheapest round-trip
$815
Typical prices: $856-$754
Delta
Wed 10/7Fri 10/16
AUS - OPO • 2 stops
Cheapest one-way
$375
Air Canada
Tue 8/18
AUS - OPO • 1 stop
Top airlines
Cheapest • from $815 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Austin and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $780 (round-trip)
Shortest trip • 12h 44m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Austin to Porto (AUS-OPO)

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

Wed, Oct 7 - Fri, Oct 16
Delta Logo
1:40 pm - 3:25 pm
AUS
-
OPO
19h 45m
2 stops
Delta Logo
5:55 am - 10:57 pm
OPO
-
AUS
23h 02m
2 stops
$815Delta
Tue, Oct 20 - Sat, Oct 24
KLM Logo
11:20 am - 10:30 am
AUS
-
OPO
17h 10m
1 stop
KLM Logo
5:00 am - 4:10 pm
OPO
-
AUS
17h 10m
1 stop
$824KLM
Tue, Oct 20 - Sat, Oct 24
KLM Logo
12:20 pm - 10:30 am
AUS
-
OPO
16h 10m
2 stops
KLM Logo
5:00 am - 4:10 pm
OPO
-
AUS
17h 10m
1 stop
$828KLM
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
2:15 pm - 7:00 am
AUS
-
OPO
34h 45m
3 stops
United Airlines Logo
11:20 am - 7:55 pm
OPO
-
AUS
14h 35m
1 stop
$838United Airlines
Thu, Sep 17 - Thu, Sep 24
United Airlines Logo
7:17 am - 6:55 am
AUS
-
OPO
17h 38m
1 stop
United Airlines Logo
11:50 am - 8:13 pm
OPO
-
AUS
38h 23m
2 stops
$851United Airlines
Thu, Sep 17 - Thu, Sep 24
United Airlines Logo
3:37 pm - 7:10 am
AUS
-
OPO
33h 33m
2 stops
United Airlines Logo
11:50 am - 8:13 pm
OPO
-
AUS
38h 23m
2 stops
$861United Airlines
Sun, Aug 9 - Sat, Aug 22
Delta Logo
3:50 pm - 10:25 am
AUS
-
OPO
12h 35m
1 stop
Delta Logo
5:00 am - 9:25 pm
OPO
-
AUS
22h 25m
2 stops
$864Delta
Wed, Oct 7 - Fri, Oct 16
Delta Logo
3:35 pm - 3:25 pm
AUS
-
OPO
17h 50m
2 stops
Delta Logo
5:00 am - 3:43 pm
OPO
-
AUS
16h 43m
2 stops
$865Delta
Thu, Sep 17 - Thu, Sep 24
Delta Logo
7:30 am - 8:30 am
AUS
-
OPO
19h 00m
2 stops
Delta Logo
5:00 am - 3:30 pm
OPO
-
AUS
16h 30m
2 stops
$868Delta
Sun, Sep 27 - Sun, Oct 18
KLM Logo
7:30 am - 10:25 am
AUS
-
OPO
20h 55m
1 stop
KLM Logo
12:25 pm - 9:49 pm
OPO
-
AUS
15h 24m
1 stop
$871KLM
Booking Insights

KAYAK's insights & trends for Austin to Porto flights

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

How much is a round-trip flight from Austin to Porto?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Austin to Porto departing in October.

What is the cheapest month to fly from Austin to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Austin to Porto, 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 from Austin to Porto is March, where tickets cost $657 (return) on average. On the other hand, the most expensive months are May and September, where the average cost of round-trip tickets is $1,289 and $1,164 respectively.

Good to know

Low seasonJanuary
Cheapest flight$375
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Austin to Porto

When to book flights from Austin to Porto

Are your dates flexible? Find out the best times to travel from Austin to Porto 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 Austin to Porto

  • How do I get from Porto Airport (OPO) to the city center?

    There are several options for getting from Porto Airport (OPO) to the city center. One is the Line E (Purple) of the Porto Metro system which runs from the airport to the city center every 20 or 30 minutes. The train takes approximately 30 minutes to reach the city center, leaving every 20 or 30 minutes (even on weekends and holidays) and stops at several stations in the city. Taxis are available at the airport and take approximately 20-30 minutes to the city centre.

  • What services are offered to economy class passengers on Brussels Airlines flights from Austin to Porto?

    Passengers in Economy class on Brussels Airlines flights from Austin to Porto are offered complimentary meals and drinks and are allowed to check-in one or two bags depending upon the fare type they choose. Economy class passengers on Brussels Airlines are given the option to choose their preferred seats and can access digital newspapers.

  • What class seat options are available on Ryanair flights from Austin to Porto?

    Ryanair does not offer any first class or business class seats. However, Ryanair offers different fare bundle options that include priority boarding, reserved seating, and other perks, depending on the package. Some of the fare bundle options include "Priority & 2 Cabin Bags," "Reserved Seating - specific rows available," and the "Flexi Plus" package.

  • What is the luggage allowance on British Airways flights from Austin to Porto?

    The luggage allowance on British Airways flights varies depending on the booking class and frequent flyer tier. The standard checked baggage allowance is 55 lbs per bag for most Economy class passengers. Passengers flying in different cabins or fare classes may have different luggage allowances. For example, passengers in First and Business class may be allowed to check-in more pieces of luggage or have a higher weight allowance for each bag. British Airways also has a carry-on baggage allowance, which typically includes one carry-on bag and one personal item such as a handbag or laptop bag.

  • What is the cheapest flight from Austin to Porto?

    In the last 3 days, the lowest price for a flight from Austin to Porto was $375 for a one-way ticket and $815 for a round-trip.

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

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

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

    Austin airport is called Austin Bergstrom and the only airport in Porto is Porto.

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

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

  • Which airline alliances offer flights from Austin to Porto?

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

  • Which is the best airline for flights from Austin to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Austin to Porto are Delta and KLM. With an average price for the route of $1,123 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $881 and an overall rating of 7.8.

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

    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 Austin to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from 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 from Austin to Porto?

    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 Porto with an airline and back to Austin with another airline. Booking your flights between Austin and OPO 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 Austin to Porto?

    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 Porto from Austin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Austin to Porto

  • Iberia offers special services and assistance to passengers with reduced mobility on flights from Austin to Porto. These services include assistance for boarding and disembarking, wheelchair services, and other services tailored to the specific needs of the passenger.
  • Flights to Porto at Austin-Bergstrom International Airport (AUS) typically depart from the Barbara Jordan Terminal, which houses gates 10-39. These gates serve several airlines that offer flights for this route.
  • If you are planning to travel with your pet on flights from Austin to Porto, consider Air Canada as it allows pets onboard its flights. Pets in the cabin should not exceed 17 lbs and larger pets such as birds and rabbits must be transported in the cargo hold.
  • Porto Airport (OPO) serves Porto as well as other nearby destinations in the area. Some close towns which are also served by the airport include the Douro Valley region, Braga, Guimaraes, and Viana do Castelo.
  • Families with kids are eligible for priority boarding at the airport on flights from Austin to Porto. Air France also offers discounts for young flyers, including up to 20% discount and up to 90% off fares for infants under 2 years old sitting on a parent's lap.

Reviews of the top 4 airlines serving from Austin to Porto

 
See real verified KAYAK customer reviews for airlines flying from Austin to Porto. 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 Austin to Porto? 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.
7.9
DeltaOverall score based on 8459 reviews
8.5Crew
7.2Food
7.8Entertainment
8.1Boarding
7.9Comfort
Airline reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

8.0 ExcellentMatthew, May 2026
OKC - ATL
Read more Delta reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

The wheelchair service is useless. They live you in different spots, not tell you anything just wait. I waited 30 minutes in Frankfurt when decided to walk the 25 minutes distance. In Budapest nobody came.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

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

Information on your arrival and departure airports