$814 Find Cheap Flights from Green Bay to Portugal

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to Portugal departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Green Bay to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Green Bay to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Green Bay to Portugal

Wed, Oct 14 - Wed, Oct 21
Delta Logo
5:25 pm - 6:45 pm
GRB
-
LIS
19h 20m
2 stops
Delta Logo
5:35 am - 8:37 pm
LIS
-
GRB
21h 02m
2 stops
$814Delta
Tue, May 5 - Mon, May 18
Delta Logo
7:00 am - 5:50 pm
GRB
-
LIS
28h 50m
2 stops
Delta Logo
11:55 am - 8:34 pm
LIS
-
GRB
38h 39m
2 stops
$822Delta
Tue, May 5 - Fri, May 15
Delta Logo
5:15 am - 10:55 am
GRB
-
LIS
23h 40m
2 stops
Delta Logo
5:00 am - 10:52 pm
LIS
-
GRB
23h 52m
2 stops
$827Delta
Wed, May 6 - Fri, May 15
Delta Logo
11:09 am - 2:55 pm
GRB
-
LIS
21h 46m
2 stops
Delta Logo
5:00 am - 3:39 pm
LIS
-
GRB
40h 39m
2 stops
$828Delta
Tue, May 5 - Mon, May 11
Iberia Logo
9:42 am - 11:50 am
GRB
-
LIS
20h 08m
2 stops
Iberia Logo
8:45 pm - 10:03 pm
LIS
-
GRB
31h 18m
2 stops
$837Iberia
Thu, Oct 8 - Wed, Nov 18
United Airlines Logo
2:30 pm - 1:40 pm
GRB
-
LIS
17h 10m
2 stops
United Airlines Logo
5:00 am - 9:04 pm
LIS
-
GRB
22h 04m
2 stops
$857United Airlines
Thu, Oct 8 - Wed, Nov 18
Multiple Airlines Logo
5:25 pm - 2:55 pm
GRB
-
LIS
15h 30m
2 stops
Multiple Airlines Logo
5:00 am - 4:28 pm
LIS
-
GRB
17h 28m
2 stops
$861Multiple Airlines
Thu, Oct 15 - Fri, Oct 23
Delta Logo
5:25 pm - 2:55 pm
GRB
-
LIS
15h 30m
2 stops
Delta Logo
5:00 am - 9:32 pm
LIS
-
GRB
22h 32m
2 stops
$876Delta
Fri, May 8 - Wed, May 13
Delta Logo
11:53 am - 10:55 am
GRB
-
LIS
17h 02m
2 stops
Delta Logo
5:00 am - 9:58 pm
LIS
-
GRB
22h 58m
2 stops
$877Delta
Thu, May 7 - Wed, May 13
Delta Logo
6:20 am - 2:55 pm
GRB
-
LIS
26h 35m
2 stops
Delta Logo
5:35 am - 3:39 pm
LIS
-
GRB
16h 04m
2 stops
$880Delta
Booking Insights

KAYAK's insights & trends for Green Bay to Portugal flights

Get data-powered insights and trends into flights from Green Bay to Portugal to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Green Bay to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Green Bay to Portugal were found on Delta ($822) and Iberia ($837).

Find deals

Good to know

Low seasonMarch
Cheapest flight$814
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Green Bay to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Green Bay to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Green Bay to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Green Bay to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Green Bay to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Green Bay to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Green Bay to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Green Bay to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Green Bay to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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.
7.4
United AirlinesOverall score based on 9643 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

10.0 ExcellentPeter, Apr 2026
SFO - ICN
Read more United Airlines reviews

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Everything you need to know for your flight from Green Bay to Portugal

Information on your arrival and departure airports

Green Bay (GRB)