$337+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — LIS
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Green Bay to Portugal with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Green Bay to Portugal
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Best
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Cheapest flights from Green Bay to PortugalExplore 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 September 18, 2026.
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 September 18, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/73:42 pm -
2 stops25h 03m
Wed 10/215:05 am -
2 stops24h 14m
Deal found 9/18![United Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 11/145:55 pm -
2 stops32h 15m
Wed 11/185:00 am -
2 stops20h 10m
Deal found 9/16![United Airlines logo]()
$1,093
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Tue 10/205:05 am -
2 stops21h 58m
Deal found 9/18![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Mon 10/195:05 am -
2 stops24h 14m
Deal found 9/18![United Airlines logo]()
$1,191
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Sat 10/245:05 am -
2 stops24h 12m
Deal found 9/18![United Airlines logo]()
$1,455
This BusinessClass deal was found by Cheapflights users on 9/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:04 pm -
2 stops16h 21m
Sun 10/2511:05 am -
2 stops18h 07m
Deal found 9/17![Multiple Airlines logo]()
$7,438
Best flights from Green Bay to PortugalDiscover carefully curated flight deals from Green Bay to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Green Bay to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/73:42 pm -
2 stops25h 03m
Wed 10/215:05 am -
2 stops24h 14m
Deal found 9/18![United Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/145:55 pm -
2 stops32h 15m
Wed 11/185:00 am -
2 stops20h 10m
Deal found 9/17![United Airlines logo]()
$1,093
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Fri 10/237:25 am -
2 stops21h 54m
Deal found 9/18![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Thu 10/227:25 am -
2 stops21h 54m
Deal found 9/18![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Tue 10/205:05 am -
2 stops21h 58m
Deal found 9/18![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Sat 10/245:05 am -
2 stops24h 12m
Deal found 9/18![United Airlines logo]()
$1,455
This BusinessClass deal was found by Cheapflights users on 9/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:04 pm -
2 stops16h 21m
Sun 10/2511:05 am -
2 stops18h 07m
Deal found 9/17![Multiple Airlines logo]()
$7,438
Last-minute flights from Green Bay to PortugalDiscover last-minute flight deals from Green Bay to Portugal. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Green Bay to Portugal. Data last updated September 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/73:42 pm -
2 stops25h 03m
Wed 10/215:05 am -
2 stops24h 14m
Deal found 9/18![United Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Thu 10/227:25 am -
2 stops21h 54m
Deal found 9/18![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Mon 10/195:05 am -
2 stops24h 14m
Deal found 9/18![United Airlines logo]()
$1,191
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/79:05 am -
2 stops19h 25m
Sun 10/185:05 am -
2 stops20h 43m
Deal found 9/18![United Airlines logo]()
$1,455
This BusinessClass deal was found by Cheapflights users on 9/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:04 pm -
2 stops16h 21m
Sun 10/2511:05 am -
2 stops18h 07m
Deal found 9/17![Multiple Airlines logo]()
$7,438
One-way flights from Green Bay to PortugalSearch for one-way flight options from Green Bay to Portugal. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Green Bay to Portugal. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 9/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/110:50 am -
2 stops15h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Virgin Atlantic logo]()
$337
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/225:00 am -
2 stops21h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 2/110:10 am -
3 stops16h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$5,638
Find 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 September 18, 2026.
Round-trip from | $908 (United Airlines) |
|---|---|
One-way from | $337 (Virgin Atlantic) |
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 7,457,451 searches. Data last updated September 18, 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
Cheapest round-trip
Quickest round-trip
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 2/1
10:50 am-8:00 am
2 stops15h 10m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$337
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Thu 10/22
5:00 am-8:20 am
2 stops21h 20m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$513
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 10/7
3:42 pm-10:45 pm
2 stops25h 03m
Lisbon Humberto Delgado
Wed 10/21
5:05 am-11:19 pm
2 stops24h 14m
$908
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Sat 11/14
5:55 pm-8:10 am
2 stops32h 15m
Lisbon Humberto Delgado
Wed 11/18
5:00 am-7:10 pm
2 stops20h 10m
$1,093
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 10/7
9:05 am-10:30 am
2 stops19h 25m
Lisbon Humberto Delgado
Fri 10/23
7:25 am-11:19 pm
2 stops21h 54m
$1,161
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 10/7
9:05 am-10:30 am
2 stops19h 25m
Lisbon Humberto Delgado
Thu 10/22
7:25 am-11:19 pm
2 stops21h 54m
$1,161
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 10/7
9:05 am-10:30 am
2 stops19h 25m
Lisbon Humberto Delgado
Tue 10/20
5:05 am-9:03 pm
2 stops21h 58m
$1,161
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 10/7
9:05 am-10:30 am
2 stops19h 25m
Lisbon Humberto Delgado
Sat 10/24
5:05 am-11:17 pm
2 stops24h 12m
$1,455
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 2/1
10:10 am-8:10 am
3 stops16h 00m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$5,638
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Sat 10/10
8:04 pm-6:25 pm
2 stops16h 21m
Lisbon Humberto Delgado
Sun 10/25
11:05 am-12:12 am
2 stops18h 07m
$7,438
Sorted by cheapest first
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.
GRB-LIS
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
GRB-PT0
GRB-LIS
No data available for this route at this time. Please check back soon.
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 September 18, 2026.
Peruse reviews from past customers who have flown with United Airlines from Green Bay to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Food
6.7
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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.
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Alternative routes for Green Bay to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Green Bay to Portugal by cabin class
Find flights from Green Bay to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Green Bay and Portugal flights
Browse other Green Bay and Portugal flight options. Last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
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 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$545 | Average$904 | FlexibilityNo cancel fee | On-time69% |