$889 Find Cheap Flights from Green Bay to Portugal - Compare and Save

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Book Cheap Green Bay to Portugal Plane Tickets

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Green Bay to Portugal

Sat, Dec 12 - Sat, Dec 19
United Airlines Logo
1:15 pm - 10:20 amGRB  Green Bay Austin-Straubel-LIS Lisbon Humberto Delgado
15h 05m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
United Airlines Logo
10:15 am - 11:15 pmLIS  Lisbon Humberto Delgado-GRB Green Bay Austin-Straubel
19h 00m2 stops Newark Chicago O'Hare Intl
$889United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
5:55 pm - 8:10 amGRB  Green Bay Austin-Straubel-LIS Lisbon Humberto Delgado
32h 15m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
5:00 am - 7:10 pmLIS  Lisbon Humberto Delgado-GRB Green Bay Austin-Straubel
20h 10m2 stops Frankfurt am Main Chicago O'Hare Intl
$1,273United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
5:55 pm - 8:10 amGRB  Green Bay Austin-Straubel-LIS Lisbon Humberto Delgado
32h 15m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
5:00 am - 7:10 pmLIS  Lisbon Humberto Delgado-GRB Green Bay Austin-Straubel
20h 10m2 stops Frankfurt am Main Chicago O'Hare Intl
$1,278United Airlines
Booking Insights

Price, demand and travel trends for Green Bay to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Green Bay to Portugal right now?

The cheapest fare from Green Bay to Portugal in the last week was $889 round-trip, to Lisbon Humberto Delgado (LIS).

Which airport in Portugal is the cheapest to fly to from Green Bay?

All flights from Green Bay to Portugal arrive at Lisbon Humberto Delgado (LIS). On average, round-trip fares are around $904.

What’s the cheapest day to fly from Green Bay to Portugal?

Tuesday tends to be the cheapest day to fly from Green Bay to Portugal, while Saturday is the most expensive. Fares run about 40% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Green Bay to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the evening with average prices of $895. The morning is the most expensive time to fly, with average prices of $1,191.

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Key details for Green Bay to Portugal flights

Low season

December

Cheapest flight

$889
Beat the crowds with an average 86% drop in travelers.
The most popular month to fly with an average 88% increase in travelers.
Round-trip flight from Green Bay to Lisbon

Your Green Bay to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Green Bay to Portugal?

    Fares from Green Bay to Portugal are around their usual level right now. A round-trip under $822 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Green Bay to Portugal?

    Over the past 12 months, round-trip fares from Green Bay to Portugal have ranged from $822 to $1,151.

  • Which cabin classes are available on flights from Green Bay to Portugal?

    On flights from Green Bay to Portugal you can book Economy Class, Business Class or First Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Commerce Square

Your guide to booking Green Bay to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for March when flights are typically cheapest and avoid July when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Saturday cost about 40% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.

Reviews of the top airline flying from Green Bay to Portugal

 
Need help choosing which airline to fly with from Green Bay to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
United AirlinesOverall score based on 10444 reviews
7.1Entertainment
8.1Crew
6.7Food
7.7Boarding
7.3Comfort
Airline reviews

Good, our flight was delayed but that was totally out of their control due to weather and a presidential visit.

8.0 ExcellentAnonymous, Sep 2026
Read more United Airlines reviews

Good, our flight was delayed but that was totally out of their control due to weather and a presidential visit.

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

OK, I don’t expect much from coach class. Everything basically is pretty lousy. But at least I expect my bloody luggage to get from A to B. Tap Airlines lost my luggage and it has been more than 24 hours in Lisbon and they still have not located my luggage. On top of that, they are incredibly unhelpful. They feel actually dismissive. This lousy customer service.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

The seats on the aircraft are like sitting in a rock. During the boarding process they recognize Active Duty Military, why don’t they recognize Retired Military. I’ve always preferred Delta, this flight confirmed why I still prefer Delta.

It was literally one of the worst travel experiences ever. My flight got delayed by over an hour and there was no communication of this from the gate staff. I realized it by checking the screen periodically. Once on board the flight attendants continued to serve alcohol to a man who was clearly already drunk and that was making a bunch of commotion. Never again will I fly United!

At least the delays were short. Business class, even in the new planes is very crowded now with crappy tray tables

All good except paid for wifi that did not work

Flight cancelled due to fog. No other flights available for 36 hours. Directed by United to book passage on another carrier, and submit receipts for reimbursement. Did that. United now states they will not reimburse. Currently out 2 grand.

More options for your flight from Green Bay to Portugal

Complete your trip to Portugal with a hotel stay or car rental

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