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Portugal

$906+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
juin 17 — juin 241
mar. 6/17
mar. 6/24
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 juin 12, 2025.

Round-trip from

$906
(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 juin 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 7/98:00 amGRB - LIS
2 stops19h 20mUnited Airlines
mer. 7/1612:50 pmLIS - GRB
2 stops29h 33mUnited Airlines
Deal found 6/10$906
This American Airlines deal was found by Cheapflights users on 6/10. 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.
mer. 7/96:20 amGRB - LIS
2 stops20h 45mAmerican Airlines
mer. 7/166:35 amLIS - GRB
2 stops17h 14mAmerican Airlines
Deal found 6/10$1,132

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 juin 12, 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

mer. 7/9

8:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

mer. 7/16

12:50 pm-12:23 pm

2 stops29h 33m

$906

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

mer. 7/9

6:20 am-9:05 am

2 stops20h 45m

Lisbon Humberto Delgado

mer. 7/16

6:35 am-5:49 pm

2 stops17h 14m

$1,132

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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

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 juin 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 $1,136). 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 juin 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$689Average$962FlexibilityNo cancel feeOn-timeN/A

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