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Cheap flights from Green Bay to Portugal from $679

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Green Bay to Portugal departing on 6/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Green Bay to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:30 pm - 3:35 pm
GRB
-
LIS
16h 05m
2 stops
American Airlines Logo
8:25 am - 9:58 pm
LIS
-
GRB
19h 33m
2 stops
$716American Airlines
Tue, Apr 28 - Tue, May 5
American Airlines Logo
5:30 pm - 5:55 pm
GRB
-
LIS
18h 25m
2 stops
American Airlines Logo
8:25 am - 10:03 pm
LIS
-
GRB
19h 38m
2 stops
$788American Airlines
Tue, May 5 - Tue, May 12
Delta Logo
11:09 am - 2:55 pm
GRB
-
LIS
21h 46m
2 stops
Delta Logo
5:00 am - 10:52 pm
LIS
-
GRB
23h 52m
2 stops
$800Delta
Tue, May 5 - Tue, May 12
British Airways Logo
9:42 am - 11:00 pm
GRB
-
LIS
31h 18m
2 stops
British Airways Logo
6:45 pm - 10:03 pm
LIS
-
GRB
33h 18m
2 stops
$803British Airways
Tue, May 5 - Mon, May 11
Iberia Logo
5:30 pm - 11:25 pm
GRB
-
LIS
23h 55m
2 stops
Iberia Logo
8:45 pm - 10:03 pm
LIS
-
GRB
31h 18m
2 stops
$811Iberia
Tue, May 5 - Mon, May 11
Iberia Logo
5:24 pm - 11:25 pm
GRB
-
LIS
24h 01m
2 stops
Iberia Logo
6:35 am - 10:03 pm
LIS
-
GRB
21h 28m
2 stops
$827Iberia
Thu, May 7 - Sun, May 10
United Airlines Logo
3:44 pm - 10:30 am
GRB
-
LIS
12h 46m
2 stops
United Airlines Logo
12:20 pm - 9:59 am
LIS
-
GRB
27h 39m
2 stops
$876United Airlines
Mon, Aug 10 - Fri, Aug 21
Delta Logo
12:05 pm - 11:15 am
GRB
-
LIS
17h 10m
2 stops
Delta Logo
5:35 am - 8:35 pm
LIS
-
GRB
21h 00m
2 stops
$886Delta
Sun, Aug 9 - Wed, Aug 19
Delta Logo
5:25 pm - 11:15 am
GRB
-
LIS
35h 50m
2 stops
Delta Logo
5:35 am - 4:33 pm
LIS
-
GRB
16h 58m
2 stops
$888Delta
Wed, Aug 12 - Wed, Aug 19
Delta Logo
6:00 pm - 10:45 am
GRB
-
LIS
34h 45m
2 stops
Delta Logo
5:35 am - 4:33 pm
LIS
-
GRB
16h 58m
2 stops
$898Delta
Sat, Aug 8 - Wed, Aug 19

Iberia flights from Green Bay to Portugal

Our best Iberia deals on Green Bay to Portugal flight tickets
Iberia
May 5
GRB5:30 pmGreen Bay Austin-Straubel
23h 55m
2 stops
LIS11:25 pmLisbon Humberto Delgado
May 11
LIS8:45 pmLisbon Humberto Delgado
31h 18m
2 stops
GRB10:03 pmGreen Bay Austin-Straubel
$811
Iberia
May 7
GRB5:24 pmGreen Bay Austin-Straubel
24h 01m
2 stops
LIS11:25 pmLisbon Humberto Delgado
May 10
LIS6:35 amLisbon Humberto Delgado
21h 28m
2 stops
GRB10:03 pmGreen Bay Austin-Straubel
$827

American Airlines flights from Green Bay to Portugal

Our best American Airlines deals on Green Bay to Portugal flight tickets
American Airlines
Apr 28
GRB5:30 pmGreen Bay Austin-Straubel
16h 05m
2 stops
LIS3:35 pmLisbon Humberto Delgado
May 5
LIS8:25 amLisbon Humberto Delgado
19h 33m
2 stops
GRB9:58 pmGreen Bay Austin-Straubel
$716
American Airlines
May 5
GRB5:30 pmGreen Bay Austin-Straubel
18h 25m
2 stops
LIS5:55 pmLisbon Humberto Delgado
May 12
LIS8:25 amLisbon Humberto Delgado
19h 38m
2 stops
GRB10:03 pmGreen Bay Austin-Straubel
$788
American Airlines
Sep 9
GRB6:29 pmGreen Bay Austin-Straubel
17h 26m
2 stops
LIS5:55 pmLisbon Humberto Delgado
Sep 25
LIS6:35 amLisbon Humberto Delgado
17h 05m
2 stops
GRB5:40 pmGreen Bay Austin-Straubel
$1,009

momondo 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, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from Green Bay to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 4/28

5:30 pm-3:35 pm

2 stops16h 05m

Lisbon Humberto Delgado

Tue 5/5

8:25 am-9:58 pm

2 stops19h 33m

$716

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 5/5

5:30 pm-5:55 pm

2 stops18h 25m

Lisbon Humberto Delgado

Tue 5/12

8:25 am-10:03 pm

2 stops19h 38m

$788

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 5/5

11:09 am-2:55 pm

2 stops21h 46m

Lisbon Humberto Delgado

Tue 5/12

5:00 am-10:52 pm

2 stops23h 52m

$800

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 5/5

9:42 am-11:00 pm

2 stops31h 18m

Lisbon Humberto Delgado

Mon 5/11

6:45 pm-10:03 pm

2 stops33h 18m

$803

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Tue 5/5

5:30 pm-11:25 pm

2 stops23h 55m

Lisbon Humberto Delgado

Mon 5/11

8:45 pm-10:03 pm

2 stops31h 18m

$811

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Thu 5/7

5:24 pm-11:25 pm

2 stops24h 01m

Lisbon Humberto Delgado

Sun 5/10

6:35 am-10:03 pm

2 stops21h 28m

$827

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Mon 8/10

3:44 pm-10:30 am

2 stops12h 46m

Lisbon Humberto Delgado

Fri 8/21

12:20 pm-9:59 am

2 stops27h 39m

$876

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sun 8/9

12:05 pm-11:15 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 8/19

5:35 am-8:35 pm

2 stops21h 00m

$886

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Wed 8/12

5:25 pm-11:15 am

2 stops35h 50m

Lisbon Humberto Delgado

Wed 8/19

5:35 am-4:33 pm

2 stops16h 58m

$888

Green BayLisbon

GRB - LIS

GRBLIS

Green Bay Austin-Straubel

Sat 8/8

6:00 pm-10:45 am

2 stops34h 45m

Lisbon Humberto Delgado

Wed 8/19

5:35 am-4:33 pm

2 stops16h 58m

$898

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Green Bay to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Green Bay Austin-Straubel to Portugal?

United Airlines is the most popular carrier operating from Green Bay Austin-Straubel to Portugal

Cheap Green Bay to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Green Bay to Portugal

Fastest flight time

15h 35m

Direct flights

None
The fastest flight from Green Bay to Portugal takes 15h 35m
There are no direct flights from Green Bay to Portugal. There are no popular flight routes from Green Bay to Portugal.
Search flight deals

Frequently asked questions about flying from Green Bay to Portugal

  • When did momondo last update prices for flights from Green Bay Austin-Straubel Airport to Portugal?

    Prices for flights from Green Bay Austin-Straubel Airport to Portugal were last updated today.

  • How old do you have to be to fly from Green Bay Austin-Straubel Airport to Portugal?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Green Bay Austin-Straubel Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Green Bay to Portugal?

Finding the right flight to Portugal from Green Bay is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

Can I find flights from Green Bay to Portugal with flexible booking policies on momondo?

momondo does allow users to show only those flights to Portugal from Green Bay which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Green Bay to Portugal?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portugal from Green Bay.

I’m not ready to book a flight from Green Bay to Portugal right now. Can momondo alert me if prices change?

Price alerts on flights to Portugal from Green Bay are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

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