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Portugal

$587+ Cheap flights from Green Bay (GRB) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$587
(United Airlines)
From Green Bay Austin-Straubel to Portugal
Search Deals

Find 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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 12/108:00 amGRB - LIS
2 stops20h 15mUnited Airlines
Tue 12/2311:20 amLIS - GRB
2 stops35h 27mUnited Airlines
Deal found 9/11$587
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 11/101:20 pmGRB - LIS
2 stops38h 00mUnited Airlines
Mon 11/175:00 amLIS - GRB
2 stops46h 38mUnited Airlines
Deal found 9/11$623
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 11/127:00 amGRB - LIS
2 stops19h 00mDelta
Sun 11/1611:25 amLIS - GRB
2 stops34h 51mDelta
Deal found 9/9$677
This British Airways deal was found by Cheapflights users on 9/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:08 pmGRB - LIS
2 stops20h 37mBritish Airways
Sun 11/28:45 pmLIS - GRB
2 stops28h 37mBritish Airways
Deal found 9/11$699
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 11/1010:46 amGRB - LIS
1 stop16h 19mAmerican Airlines
Mon 11/177:05 amLIS - GRB
2 stops19h 24mAmerican Airlines
Deal found 9/10$851

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 September 11, 2025.
Use the filters below to find and compare flights from Green Bay to Portugal that are best for you.

Fly from

Green Bay

Fly to

Portugal

Route

Depart

Return

Price

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Wed 12/10

8:00 am-10:15 am

2 stops20h 15m

Lisbon Humberto Delgado

Tue 12/23

11:20 am-4:47 pm

2 stops35h 27m

$587

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 11/10

3:51 pm-9:20 am

2 stops35h 29m

Lisbon Humberto Delgado

Mon 11/17

5:00 am-3:10 pm

2 stops40h 10m

$623

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Wed 11/12

7:00 am-8:00 am

2 stops19h 00m

Lisbon Humberto Delgado

Sun 11/16

11:25 am-4:16 pm

2 stops34h 51m

$677

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sun 10/26

8:08 pm-9:45 pm

2 stops20h 37m

Lisbon Humberto Delgado

Sun 11/2

8:45 pm-7:22 pm

2 stops28h 37m

$699

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 11/10

10:46 am-9:05 am

1 stop16h 19m

Lisbon Humberto Delgado

Mon 11/17

7:05 am-8:29 pm

2 stops19h 24m

$851

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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 September 11, 2025.
Peruse reviews from past customers who have flown with Delta 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.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 19h. 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.

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

    Currently, January is the cheapest month in which you can book a flight from Green Bay to Portugal (average of $612). Flying from Green Bay to Portugal in June is currently the most expensive (average of $1,127). 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 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$689Average$946FlexibilityNo cancel feeOn-timeN/A

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