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Portugal

$463+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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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 August 2, 2026.

This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:15 pm
GRB
-
LIS
2 stops15h 40m
American Airlines
Wed 10/216:35 am
LIS
-
GRB
2 stops17h 47m
American Airlines
Deal found 7/30$765
This Delta deal was found by Cheapflights users on 8/1. 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.
Tue 10/136:02 pm
GRB
-
LIS
2 stops14h 53m
Delta
Wed 10/215:00 am
LIS
-
GRB
2 stops18h 21m
Delta
Deal found 8/1$769
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/131:17 pm
GRB
-
LIS
2 stops13h 03m
United Airlines
Tue 10/2712:20 pm
LIS
-
GRB
2 stops33h 32m
United Airlines
Deal found 8/1$792
This Delta deal was found by Cheapflights users on 8/1. 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.
Sun 10/115:30 am
GRB
-
LIS
2 stops30h 20m
Delta
Fri 10/235:00 am
LIS
-
GRB
2 stops18h 21m
Delta
Deal found 8/1$799
This United Airlines deal was found by Cheapflights users on 7/31. 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 12/76:30 am
GRB
-
LIS
2 stops19h 40m
United Airlines
Wed 12/910:15 am
LIS
-
GRB
2 stops18h 34m
United Airlines
Deal found 7/31$804
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 10/155:00 am
GRB
-
LIS
2 stops22h 20m
United Airlines
Thu 10/225:05 am
LIS
-
GRB
2 stops24h 14m
United Airlines
Deal found 8/1$818
This Delta deal was found by Cheapflights users on 8/1. 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.
Thu 10/155:30 am
GRB
-
LIS
2 stops23h 45m
Delta
Fri 10/235:00 am
LIS
-
GRB
2 stops18h 21m
Delta
Deal found 8/1$819
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/116:20 am
GRB
-
LIS
2 stops22h 10m
United Airlines
Tue 10/2712:20 pm
LIS
-
GRB
2 stops26h 42m
United Airlines
Deal found 8/1$822
This Delta deal was found by Cheapflights users on 8/1. 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.
Tue 10/136:02 pm
GRB
-
LIS
2 stops14h 53m
Delta
Sat 10/245:00 am
LIS
-
GRB
2 stops18h 07m
Delta
Deal found 8/1$829
This Delta deal was found by Cheapflights users on 8/1. 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.
Fri 10/166:02 pm
GRB
-
LIS
2 stops14h 53m
Delta
Wed 10/215:00 am
LIS
-
GRB
2 stops18h 21m
Delta
Deal found 8/1$834
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/131:17 pm
GRB
-
LIS
2 stops13h 03m
United Airlines
Mon 10/266:00 am
LIS
-
GRB
2 stops33h 02m
United Airlines
Deal found 8/1$836
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 10/1510:33 am
GRB
-
LIS
2 stops17h 57m
United Airlines
Tue 10/2712:20 pm
LIS
-
GRB
2 stops26h 42m
United Airlines
Deal found 8/1$842

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 August 2, 2026.

Round-trip from

$765
(American Airlines)

One-way from

$463
(United Airlines)
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 August 2, 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 10/13

8:15 pm-5:55 pm

2 stops15h 40m

Lisbon Humberto Delgado

Wed 10/21

6:35 am-6:22 pm

2 stops17h 47m

$765

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Wed 10/14

5:00 am-8:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Tue 10/27

12:20 pm-10:02 am

2 stops26h 42m

$792

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sun 10/11

6:20 am-10:30 am

2 stops22h 10m

Lisbon Humberto Delgado

Thu 10/22

5:05 am-11:19 pm

2 stops24h 14m

$799

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 12/7

6:30 am-8:10 am

2 stops19h 40m

Lisbon Humberto Delgado

Wed 12/9

10:15 am-10:49 pm

2 stops18h 34m

$804
Quickest round-trip

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Fri 10/16

6:02 pm-2:55 pm

2 stops14h 53m

Lisbon Humberto Delgado

Fri 10/23

5:00 am-5:21 pm

2 stops18h 21m

$819

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Fri 10/16

6:02 pm-2:55 pm

2 stops14h 53m

Lisbon Humberto Delgado

Wed 10/21

5:00 am-5:21 pm

2 stops18h 21m

$834

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Fri 10/16

6:20 am-10:30 am

2 stops22h 10m

Lisbon Humberto Delgado

Tue 10/27

12:20 pm-10:02 am

2 stops26h 42m

$967

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Thu 9/10

5:05 pm-10:45 pm

2 stops23h 40m

Lisbon Humberto Delgado

Thu 9/17

7:25 am-11:19 pm

2 stops21h 54m

$1,043

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 10/12

8:15 pm-2:30 pm

2 stops36h 15m

Lisbon Humberto Delgado

Tue 10/27

10:35 am-12:12 am

2 stops18h 37m

$1,099

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 10/13

8:15 pm-8:10 am

1 stop29h 55m

Lisbon Humberto Delgado

Wed 10/21

12:40 pm-12:12 am

1 stop17h 32m

$1,689

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 15 resultsSorted by cheapest first
1
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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.

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 August 2, 2026.
Peruse reviews from past customers who have flown with United Airlines from Green Bay 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.
United Airlines
7.4
Good
10,061 reviews

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,061 reviews
United Airlines
7.4
Good
10,061 reviews

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

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 14h 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

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Top airline flying from Green Bay to Portugal

Discover the top airline that operate flights from Green Bay 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$545Average$904FlexibilityNo cancel feeOn-time69%

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