$798+ 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
Dec 5 — Dec 121
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
Last-minute
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 November 5, 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 November 5, 2026.
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/159:45 am -
2 stops18h 35m
Tue 12/2210:15 am -
2 stops15h 05m
Deal found 10/31![United Airlines logo]()
$886
This Iberia deal was found by Cheapflights users on 11/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:54 pm -
2 stops17h 56m
Fri 11/208:20 am -
2 stops16h 02m
Deal found 11/4![Multiple Airlines logo]()
$1,278
This Booking.com deal was found by Cheapflights users on 11/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:29 pm -
2 stops33h 36m
Fri 11/2010:45 am -
2 stops19h 22m
Deal found 11/4![British Airways logo]()
$1,338
This Air Canada deal was found by Cheapflights users on 10/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/151:06 pm -
3 stops14h 14m
Tue 12/2212:50 pm -
2 stops16h 05m
Deal found 10/31![Multiple Airlines logo]()
$4,019
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/165:55 pm -
2 stops15h 40m
Fri 11/2012:20 pm -
3 stops16h 18m
Deal found 11/3![United Airlines logo]()
$7,966
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 November 5, 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 November 5, 2026.
This United Airlines deal was found by Cheapflights users on 10/31. 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 2/18:00 am -
2 stops18h 10m
Fri 2/510:55 am -
2 stops31h 52m
Deal found 10/31![United Airlines logo]()
$798
This Expedia deal was found by Cheapflights users on 11/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/75:24 pm -
2 stops18h 31m
Sat 4/1711:00 am -
2 stops16h 58m
Deal found 11/1![British Airways logo]()
$862
This Iberia deal was found by Cheapflights users on 11/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:54 pm -
2 stops17h 56m
Fri 11/208:20 am -
2 stops16h 02m
Deal found 11/4![Multiple Airlines logo]()
$1,278
This United Airlines deal was found by Cheapflights users on 11/4. 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 2/226:20 am -
2 stops19h 50m
Thu 2/255:00 am -
2 stops20h 16m
Deal found 11/4![United Airlines logo]()
$805
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/159:45 am -
2 stops18h 35m
Tue 12/2210:15 am -
2 stops15h 05m
Deal found 10/31![United Airlines logo]()
$886
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/165:55 pm -
2 stops15h 40m
Fri 11/2012:20 pm -
3 stops16h 18m
Deal found 11/3![United Airlines logo]()
$7,966
Last-minute flights from Green Bay to PortugalDiscover last-minute flight deals from Green Bay to Portugal. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Green Bay to Portugal. Data last updated November 5, 2026 and is based on user searches.
This Iberia deal was found by Cheapflights users on 11/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:54 pm -
2 stops17h 56m
Fri 11/208:20 am -
2 stops16h 02m
Deal found 11/4![Multiple Airlines logo]()
$1,278
This Booking.com deal was found by Cheapflights users on 11/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:29 pm -
2 stops33h 36m
Fri 11/2010:45 am -
2 stops19h 22m
Deal found 11/4![British Airways logo]()
$1,338
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/165:55 pm -
2 stops15h 40m
Fri 11/2012:20 pm -
3 stops16h 18m
Deal found 11/3![United Airlines logo]()
$7,966
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/159:45 am -
2 stops18h 35m
Tue 12/2210:15 am -
2 stops15h 05m
Deal found 10/31![United Airlines logo]()
$886
This Air Canada deal was found by Cheapflights users on 10/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/151:06 pm -
3 stops14h 14m
Tue 12/2212:50 pm -
2 stops16h 05m
Deal found 10/31![Multiple Airlines logo]()
$4,019
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 November 5, 2026.
Round-trip from | $798 (United Airlines) |
|---|---|
Popular in | December |
Cheapest in | March |
Average price | $865 |
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 November 5, 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
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 2/1
8:00 am-8:10 am
2 stops18h 10m
Lisbon Humberto Delgado
Fri 2/5
10:55 am-12:47 pm
2 stops31h 52m
$798
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 2/22
6:20 am-8:10 am
2 stops19h 50m
Lisbon Humberto Delgado
Thu 2/25
5:00 am-7:16 pm
2 stops20h 16m
$805
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Wed 4/7
5:24 pm-5:55 pm
2 stops18h 31m
Lisbon Humberto Delgado
Sat 4/17
11:00 am-9:58 pm
2 stops16h 58m
$862
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Tue 12/15
9:45 am-10:20 am
2 stops18h 35m
Lisbon Humberto Delgado
Tue 12/22
10:15 am-7:20 pm
2 stops15h 05m
$886
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 11/16
6:54 pm-6:50 pm
2 stops17h 56m
Lisbon Humberto Delgado
Fri 11/20
8:20 am-6:22 pm
2 stops16h 02m
$1,278
Quickest round-trip
Green BayLisbon
GRB Green Bay Austin-Straubel - LIS Lisbon Humberto Delgado
GRBLIS
Green Bay Austin-Straubel
Mon 11/16
5:55 pm-3:35 pm
2 stops15h 40m
Lisbon Humberto Delgado
Fri 11/20
12:20 pm-10:38 pm
3 stops16h 18m
$7,966
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 November 5, 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.
Entertainment
7.1
Comfort
7.3
Food
6.7
Overall
7.3
Crew
8.1
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Comfort
7.3
Food
6.7
Overall
7.3
Crew
8.1
Boarding
7.7
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 November 5, 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 November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$545 | Average$904 | FlexibilityNo cancel fee | On-time69% |