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$261+ Cheap flights from Green Bay to Portland, ME (GRB - PWM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — PWM
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
1 adult, Economy
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Cheap flight deals from Green Bay to Portland

Cheapest flights from Green Bay to Portland
Explore the most affordable flight options available from Green Bay to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.

This United Airlines deal was found by Cheapflights users on 7/20. 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 8/1812:30 pm
GRB
-
PWM
1 stop7h 53m
United Airlines
Mon 8/246:03 am
PWM
-
GRB
1 stop4h 56m
United Airlines
Deal found 7/20$309
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:24 am
GRB
-
PWM
2 stops10h 26m
Delta
Mon 8/2412:47 pm
PWM
-
GRB
1 stop5h 08m
Delta
Deal found 7/20$314
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:05 am
GRB
-
PWM
2 stops10h 40m
American Airlines
Wed 10/75:09 pm
PWM
-
GRB
2 stops8h 03m
American Airlines
Deal found 7/21$319
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:07 am
GRB
-
PWM
1 stop3h 54m
Delta
Tue 8/112:14 pm
PWM
-
GRB
1 stop8h 39m
Delta
Deal found 7/20$324
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:24 am
GRB
-
PWM
2 stops10h 26m
Delta
Wed 8/122:14 pm
PWM
-
GRB
1 stop8h 52m
Delta
Deal found 7/20$329
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:30 am
GRB
-
PWM
2 stops9h 25m
Delta
Sat 9/1912:36 pm
PWM
-
GRB
2 stops10h 48m
Delta
Deal found 7/20$334
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:24 am
GRB
-
PWM
1 stop6h 43m
Delta
Sat 8/811:50 am
PWM
-
GRB
1 stop4h 42m
Delta
Deal found 7/20$339
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:24 am
GRB
-
PWM
2 stops10h 26m
Delta
Sat 8/811:50 am
PWM
-
GRB
1 stop4h 42m
Delta
Deal found 7/20$344
This Delta deal was found by Cheapflights users on 7/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:24 am
GRB
-
PWM
1 stop6h 43m
Delta
Wed 8/122:14 pm
PWM
-
GRB
1 stop8h 52m
Delta
Deal found 7/21$349
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:15 am
GRB
-
PWM
1 stop6h 31m
Delta
Tue 8/1112:47 pm
PWM
-
GRB
1 stop5h 08m
Delta
Deal found 7/20$354
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:10 am
GRB
-
PWM
2 stops10h 40m
Delta
Tue 8/1112:47 pm
PWM
-
GRB
1 stop5h 08m
Delta
Deal found 7/20$359
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/25:10 am
GRB
-
PWM
1 stop6h 50m
Delta
Wed 8/1211:50 am
PWM
-
GRB
1 stop4h 42m
Delta
Deal found 7/22$364

Find flight deals from Green Bay to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$261
(Delta)

Popular in

July

Cheapest in

May

Average price

$920
Provider with most accurate pricing for Green Bay Austin-Straubel-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Portland flights.
Search Deals
From Green Bay Austin-Straubel to Portland
Search Deals
One-way flight from Green Bay Austin-Straubel to Portland
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($187 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay to Portland 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 2,558,603 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from Green Bay to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Tue 8/4

5:24 am-1:07 pm

1 stop6h 43m

Portland

Wed 8/12

11:50 am-3:32 pm

1 stop4h 42m

$364

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Tue 8/4

10:37 am-11:51 pm

2 stops12h 14m

Portland

Wed 8/12

5:15 am-1:55 pm

2 stops9h 40m

$415

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Thu 8/20

6:25 am-2:34 pm

1 stop7h 09m

Portland

Thu 8/27

7:40 am-11:55 am

1 stop5h 15m

$442

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Sun 8/16

12:30 pm-9:23 pm

1 stop7h 53m

Portland

Sat 8/22

6:03 am-11:55 am

1 stop6h 52m

$444

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Mon 8/3

5:24 am-4:50 pm

2 stops10h 26m

Portland

Mon 8/10

4:47 pm-8:40 pm

1 stop4h 53m

$464

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Tue 9/15

1:17 pm-9:23 pm

1 stop7h 06m

Portland

Mon 9/21

4:57 pm-11:19 pm

1 stop7h 22m

$473

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Tue 9/15

10:05 am-7:38 pm

2 stops8h 33m

Portland

Mon 9/21

5:38 pm-9:35 am

1 stop16h 57m

$514

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Sat 9/26

5:30 am-3:55 pm

2 stops9h 25m

Portland

Sat 10/3

6:30 am-3:36 pm

2 stops10h 06m

$514

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Tue 8/4

10:37 am-11:51 pm

2 stops12h 14m

Portland

Sat 8/8

5:15 am-3:09 pm

2 stops10h 54m

$517

Green BayPortland

GRB - PWM

GRBPWM

Green Bay Austin-Straubel

Sun 9/13

6:25 am-2:34 pm

1 stop7h 09m

Portland

Sat 9/19

5:15 am-12:05 pm

2 stops7h 50m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Compare providers for flights from Green Bay to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Green Bay to Portland in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Green Bay-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Green Bay-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Green Bay-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Green Bay-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Green Bay-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Green Bay to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Green Bay with our price prediction graph.
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.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated July 24, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Green Bay to Portland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,481 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,026 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,842 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Green Bay to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Green Bay to Portland, Maine?

    Airlines like Delta and United Airlines fly from Green Bay to Portland, Maine in about 7h 53m. The time it takes to get you to your destination can typically vary by up to 3h 34m. Green Bay and Portland, Maine are separated by a distance of 884 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Green Bay to Portland, Maine round-trip?

    Our cheapest airline available from Green Bay to Portland, Maine is Delta. Our recent data shows that you can find tickets from as low as $248 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $314 and $326 round-trip. You may be able to fly from Green Bay to Portland, Maine for 50% less than the average price by searching for these airlines.

  • Can I find deals for flights from Green Bay to Portland that include hotel bookings?

    Yes. In addition to deals on Green Bay to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Green Bay to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Green Bay to Portland.

  • Can I find deals for business class flights from Green Bay to Portland?

    Yes. Cheapflights offers flight deals from Green Bay to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Lewiston
Brunswick
Conway

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Green Bay to Portland

Discover the top 3 airlines that operate flights from Green Bay to Portland. 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 2,558,603 searches. Data last updated July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$556FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$314Average$590FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$326Average$418FlexibilityNo cancel feeOn-time69%

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