Portugal

$285+ Cheap flights from Austin (AUS) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — LIS
Aug 2 — Aug 91
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Cheap flight deals from Austin to Portugal

Cheapest flights from Austin to Portugal
Explore the most affordable flight options available from Austin to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.

This Booking.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:25 am
AUS
-
LIS
1 stop22h 40m
Multiple Airlines
Wed 11/1111:20 am
LIS
-
AUS
1 stop29h 51m
Multiple Airlines
Deal found 6/28$706
This Trip.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:25 pm
AUS
-
OPO
1 stop13h 20m
Air Transat
Sat 9/261:30 pm
OPO
-
AUS
1 stop31h 55m
Air Transat
Deal found 7/2$708
This Gotogate deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:05 pm
AUS
-
LIS
1 stop15h 15m
Multiple Airlines
Thu 11/125:00 am
LIS
-
AUS
1 stop15h 05m
Multiple Airlines
Deal found 6/29$713
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:00 pm
AUS
-
LIS
2 stops14h 20m
United Airlines
Tue 11/35:00 am
LIS
-
AUS
1 stop15h 05m
United Airlines
Deal found 6/28$723
This Air France deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
AUS
-
LIS
1 stop20h 00m
Multiple Airlines
Wed 11/1111:30 am
LIS
-
AUS
1 stop34h 35m
Multiple Airlines
Deal found 6/30$725
This Air Transat deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:25 pm
AUS
-
OPO
1 stop13h 20m
Air Transat
Thu 9/31:30 pm
OPO
-
AUS
1 stop31h 55m
Air Transat
Deal found 6/28$728
This Booking.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am
AUS
-
LIS
2 stops20h 20m
Air Canada
Wed 11/115:00 am
LIS
-
AUS
2 stops36h 11m
Air Canada
Deal found 6/28$730
This KLM deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:30 am
AUS
-
OPO
1 stop19h 35m
KLM
Wed 12/211:15 am
OPO
-
AUS
1 stop34h 50m
KLM
Deal found 6/29$732
This KLM deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:01 pm
AUS
-
OPO
1 stop15h 24m
KLM
Thu 12/35:00 am
OPO
-
AUS
1 stop17h 05m
KLM
Deal found 7/3$736
This KAYAK deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:25 pm
AUS
-
OPO
1 stop13h 05m
Lufthansa
Thu 12/36:00 am
OPO
-
AUS
2 stops35h 11m
Lufthansa
Deal found 6/30$738
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
AUS
-
LIS
2 stops20h 20m
United Airlines
Thu 11/1210:55 am
LIS
-
AUS
2 stops36h 49m
United Airlines
Deal found 6/29$738
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:40 am
AUS
-
OPO
1 stop19h 50m
United Airlines
Thu 12/36:00 am
OPO
-
AUS
2 stops35h 11m
United Airlines
Deal found 7/3$739

Find flight deals from Austin to Portugal

Keep the following information in mind while searching for Austin to Portugal flight deals. Data was last updated July 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$706
(Booking.com)

One-way from

$285
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,084
Provider with most accurate pricing for Austin Bergstrom-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Austin Bergstrom-Lisbon Humberto Delgado flights.
From Austin Bergstrom to Portugal
One-way flight from Austin Bergstrom to Portugal
Highest demand for flights based on searches. 16% potential increase in price ($181 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Average for round-trip flights in July 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Portugal 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, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2026.
Use the filters below to find and compare flights from Austin to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 11/25

7:30 am-9:05 am

1 stop19h 35m

Porto

Wed 12/2

11:15 am-4:05 pm

1 stop34h 50m

$732

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

6:01 pm-3:25 pm

1 stop15h 24m

Porto

Thu 12/3

5:00 am-4:05 pm

1 stop17h 05m

$736

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Mon 11/23

7:40 am-9:30 am

1 stop19h 50m

Porto

Thu 12/3

6:00 am-11:11 am

2 stops35h 11m

$739

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Sun 12/6

6:30 am-9:30 am

1 stop21h 00m

Porto

Wed 12/9

6:00 am-3:29 pm

3 stops39h 29m

$741

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 10/13

11:25 am-10:30 am

1 stop17h 05m

Porto

Thu 10/22

5:00 am-4:10 pm

1 stop17h 10m

$762

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 10/13

3:59 pm-10:30 am

1 stop12h 31m

Porto

Thu 10/22

5:00 am-4:10 pm

1 stop17h 10m

$763

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Tue 10/13

9:02 am-7:00 am

2 stops15h 58m

Porto

Thu 10/22

11:50 am-6:49 pm

2 stops36h 59m

$763

AustinLisbon

AUS - LIS

AUSLIS

Austin Bergstrom

Sun 12/6

7:15 am-10:05 am

1 stop20h 50m

Lisbon Humberto Delgado

Thu 12/10

5:00 am-2:05 pm

1 stop15h 05m

$772
Quickest round-trip

AustinPonta Delgada

AUS - PDL

AUSPDL

Austin Bergstrom

Tue 7/21

2:18 pm-8:40 am

2 stops13h 22m

Ponta Delgada Nordela

Thu 8/27

11:00 am-9:58 pm

1 stop15h 58m

$806

AustinPorto

AUS - OPO

AUSOPO

Austin Bergstrom

Wed 10/7

7:30 am-10:30 am

1 stop21h 00m

Porto

Fri 10/16

12:45 pm-4:40 pm

1 stop33h 55m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 51 resultsSorted by cheapest first
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6

Best time to book a flight from Austin to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to Portugal

What is the cheapest month to book a flight from Austin to Portugal?

Currently, January is the cheapest month in which you can book a flight from Austin to Portugal (average of $310). Flying from Austin to Portugal in July is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Austin to Portugal?

The best time to book flights from Austin to Portugal is 45 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated July 3, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andUnited Airlines from Austin to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from Austin to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Austin to Portugal?

    Austin Bergstrom (AUS), located 7.5 mi from the city center, is the airport you fly out of when you book flights from Austin to Portugal.

  • How long is the flight from Austin to Portugal?

    Departing from Austin to Portugal will take you 19h 35m. Austin and Portugal are separated by a distance of 4829 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Austin to Portugal one-way?

    $245 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on British Airways and Delta, with prices starting from $295 and $307, respectively.

  • What are the most popular routes from Austin to Portugal?

  • Can I find deals for flights from Austin to Portugal that include hotel bookings?

    Yes. In addition to deals on Austin to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Portugal.

  • Can I find deals for business class flights from Austin to Portugal?

    Yes. Cheapflights offers flight deals from Austin to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Austin to Portugal (average of $310). Flying from Austin to Portugal in July is currently the most expensive (average of $726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from Austin to Portugal

Discover the top 8 airlines that operate flights from Austin to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$486Average$921FlexibilityNo cancel feeOn-time75%
IberiaCheapest$508Average$848FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$508Average$828FlexibilityNo cancel feeOn-time70%
DeltaCheapest$541Average$1,025FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$573Average$888FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$605Average$1,079FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$656Average$1,127FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$878Average$993FlexibilityNo cancel feeOn-time67%

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