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$977+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$977
(Ovago)
Provider with most accurate pricing for Green Bay Austin-Straubel-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Lisbon Humberto Delgado flights.
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From Green Bay Austin-Straubel to Portugal
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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 February 20, 2025.

This Ovago deal was found by Cheapflights users on 2/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/236:40 pmGRB - LIS
2 stops46h 20mBritish Airways
Sat 5/34:45 pmLIS - GRB
2 stops31h 25mBritish Airways
Deal found 2/20$977
This United Airlines deal was found by Cheapflights users on 2/20. 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 8/38:05 amGRB - LIS
2 stops19h 15mUnited Airlines
Sat 8/96:15 amLIS - GRB
2 stops43h 08mUnited Airlines
Deal found 2/20$1,077

Find flights from Green Bay to Portugal within your budget

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 February 20, 2025.

Fly from

Green Bay

Fly to

Portugal

Route

Depart

Return

Price

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Wed 4/23

6:40 pm-11:00 pm

2 stops46h 20m

Lisbon Humberto Delgado

Sat 5/3

4:45 pm-6:10 pm

2 stops31h 25m

$977

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sun 8/3

8:05 am-9:20 am

2 stops19h 15m

Lisbon Humberto Delgado

Sat 8/9

6:15 am-7:23 pm

2 stops43h 08m

$1,077

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Green Bay to Portugal

Get recent, data-driven insights about flights from Green Bay to Portugal including ideal travel times, pricing trends, and more.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 February 20, 2025.
United Airlines
7.4
Good
8,765 reviews

Food

6.7

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,765 reviews
United Airlines
7.4
Good
8,765 reviews

Food

6.7

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

British Airways
6.6
Okay
6,762 reviews
United Airlines
7.4
Good
8,765 reviews

Food

6.7

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • 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 $1,234). 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.

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$629Average$819FlexibilityNo cancel feeOn-time71%
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