HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$532+ Cheap flights from Green Bay (GRB) 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Green Bay to Portugal

Cheapest flights from Green Bay to Portugal
Explore the most affordable flight options available from Green Bay to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This United Airlines deal was found by Cheapflights users on 3/14. 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 4/283:47 pm
GRB
-
LIS
2 stops15h 53m
United Airlines
Tue 5/511:25 am
LIS
-
GRB
2 stops33h 45m
United Airlines
Deal found 3/14$614
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:15 am
GRB
-
LIS
2 stops20h 45m
Delta
Sat 5/25:35 am
LIS
-
GRB
2 stops21h 03m
Delta
Deal found 3/12$628
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Sat 11/142:30 pm
GRB
-
LIS
2 stops36h 50m
United Airlines
Wed 11/185:00 am
LIS
-
GRB
2 stops20h 05m
United Airlines
Deal found 3/11$701
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 10/231:11 pm
GRB
-
LIS
2 stops13h 09m
United Airlines
Sat 10/3111:55 am
LIS
-
GRB
2 stops32h 00m
United Airlines
Deal found 3/12$743
This British Airways deal was found by Cheapflights users on 3/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:29 pm
GRB
-
LIS
2 stops17h 36m
Multiple Airlines
Wed 9/306:35 am
LIS
-
GRB
2 stops22h 32m
Multiple Airlines
Deal found 3/15$986
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/12. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:42 am
GRB
-
LIS
1 stop16h 33m
Multiple Airlines
Sat 5/212:40 pm
LIS
-
GRB
1 stop15h 18m
Multiple Airlines
Deal found 3/12$1,591
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:15 pm
GRB
-
LIS
2 stops15h 35m
Multiple Airlines
Sat 10/36:15 am
LIS
-
GRB
2 stops16h 28m
Multiple Airlines
Deal found 3/12$4,543
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:15 pm
GRB
-
LIS
2 stops15h 35m
Multiple Airlines
Fri 8/216:15 am
LIS
-
GRB
2 stops16h 41m
Multiple Airlines
Deal found 3/15$4,545

Find flight deals from Green Bay to Portugal

Keep the following information in mind while searching for Green Bay to Portugal flight deals. Data was last updated March 16, 2026.

Round-trip from

$614
(United Airlines)

One-way from

$532
(oojo)
From Green Bay Austin-Straubel to Portugal
Search Deals
One-way flight from Green Bay Austin-Straubel to Portugal
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay 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 March 16, 2026.
Use the filters below to find and compare flights from Green Bay to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 4/28

3:47 pm-1:40 pm

2 stops15h 53m

Lisbon Humberto Delgado

Tue 5/5

11:25 am-3:10 pm

2 stops33h 45m

$614

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sat 4/25

5:15 am-8:00 am

2 stops20h 45m

Lisbon Humberto Delgado

Sat 5/2

5:35 am-8:38 pm

2 stops21h 03m

$628
Quickest round-trip

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sat 4/25

9:42 am-8:15 am

1 stop16h 33m

Lisbon Humberto Delgado

Sat 5/2

12:40 pm-9:58 pm

1 stop15h 18m

$1,591

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 8/11

1:15 pm-10:50 am

2 stops15h 35m

Lisbon Humberto Delgado

Fri 8/21

6:15 am-4:56 pm

2 stops16h 41m

$4,545
Cheapest one-way

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 6/16

6:30 am-10:30 am

2 stops22h 00m

$592

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Fri 6/12

6:30 am-9:20 am

2 stops20h 50m

$666

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sat 6/13

12:34 pm-9:20 am

2 stops14h 46m

$666

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 6/15

9:43 am-5:55 pm

2 stops26h 12m

$689

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Thu 6/11

10:37 am-10:30 am

2 stops17h 53m

$864
Quickest one-way

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sun 6/14

2:55 pm-8:10 am

1 stop11h 15m

$1,346

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Sorted by cheapest first

Best time to book a flight from Green Bay to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Green Bay 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 Green Bay to Portugal
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Green Bay 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 Green Bay to Portugal?

    For a flight from Green Bay to Portugal, you will be flying from Austin-Straubel. Green Bay Austin-Straubel (GRB) is just 5.9 mi from the center of the city.

  • How long is the flight from Green Bay to Portugal?

    Departing from Green Bay to Portugal will take you 15h 53m. The distance between Green Bay and Portugal is about 3934 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Green Bay to Portugal?

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

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

    Yes. Cheapflights offers flight deals from Green Bay 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.