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

Currently priced at $374, American Airlines will fly you from Portland, Maine to Green Bay and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $435 and $439, respectively. American Airlines is 22% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Portland, Maine to Green Bay?

Travelers seeking maximum savings on their Portland, Maine to Green Bay flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Green Bay ranges from 1.1 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit Green Bay when rainfall is around 1.1 in.

If weather is an important factor for your trip to Green Bay, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

What is the cheapest day to fly round-trip from Portland, Maine to Green Bay?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 134%.

What is the cheapest month to fly from Portland, Maine to Green Bay?

Flights from Portland, Maine to Green Bay lean towards being more expensive in November. Prices are generally better when you fly from Portland, Maine to Green Bay in April, with the cheapest ticket starting at $252.

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

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

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

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

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

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

$312+ Flights from Portland, ME to Green Bay

Q: How much does it cost to fly round-trip from Portland, Maine to Green Bay?

Airfare is below average for this route at the moment. Portland, Maine to Green Bay flights typically cost between $489 and $677 in August. The cheapest round-trip price found within the last 3 days was $374 on American Airlines (Aug 26-Sep 3).

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Cheap flight deals from Portland to Green Bay

Round-trip from	$374 (American Airlines)
One-way from	$312 (United Airlines)
Popular in	November
Cheapest in	April
Average price	$558

From Portland to Green Bay Austin-Straubel

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One-way flight from Portland to Green Bay Austin-Straubel

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Highest demand for flights based on searches. 20% potential increase in price ($122 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Portland to Green Bay

Cheapest flights from Portland to Green Bay
Explore the most affordable flight options available from Portland to Green Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 8/268:00 amPWM - GRB

2 stops7h 35mAmerican Airlines

Wed 9/34:39 pmGRB - PWM

1 stop5h 04mAmerican Airlines

Deal found 7/28

$374

Tue 9/911:50 amPWM - GRB

2 stops12h 32mDelta

Wed 9/105:31 amGRB - PWM

2 stops9h 39mDelta

Deal found 7/27

$435

Tue 8/266:14 amPWM - GRB

1 stop4h 51mUnited Airlines

Wed 9/31:22 pmGRB - PWM

1 stop7h 37mUnited Airlines

Deal found 7/28

$439

Best flights from Portland to Green Bay
Discover carefully curated flight deals from Portland to Green Bay that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 8/268:00 amPWM - GRB

2 stops7h 35mAmerican Airlines

Wed 9/34:39 pmGRB - PWM

1 stop5h 04mAmerican Airlines

Deal found 7/28

$374

Tue 9/911:50 amPWM - GRB

2 stops12h 32mDelta

Wed 9/105:31 amGRB - PWM

2 stops9h 39mDelta

Deal found 7/27

$435

Tue 8/266:14 amPWM - GRB

1 stop4h 51mUnited Airlines

Wed 9/31:22 pmGRB - PWM

1 stop7h 37mUnited Airlines

Deal found 7/28

$439

Last-minute flights from Portland to Green Bay
Discover last-minute flight deals from Portland to Green Bay. Data last updated July 29, 2025 and is based on user searches.

Mon 8/42:00 pmPWM - GRB

2 stops10h 22mDelta

Wed 8/67:00 amGRB - PWM

1 stop4h 06mDelta

Deal found 7/27

$708

Tue 8/56:10 amPWM - GRB

1 stop5h 01mUnited Airlines

Wed 8/66:15 amGRB - PWM

1 stop7h 09mUnited Airlines

Deal found 7/27

$604

Tue 8/56:00 amPWM - GRB

2 stops9h 21mAmerican Airlines

Wed 8/69:42 amGRB - PWM

1 stop4h 20mAmerican Airlines

Deal found 7/27

$668

Tue 8/1212:53 pmPWM - GRB

2 stops11h 29mDelta

Sat 8/1611:07 amGRB - PWM

2 stops11h 56mDelta

Deal found 7/28

$593

Tue 8/268:00 amPWM - GRB

2 stops7h 35mAmerican Airlines

Wed 9/34:39 pmGRB - PWM

1 stop5h 04mAmerican Airlines

Deal found 7/28

$374

Tue 8/266:14 amPWM - GRB

1 stop4h 51mUnited Airlines

Wed 9/31:22 pmGRB - PWM

1 stop7h 37mUnited Airlines

Deal found 7/28

$439

One-way flights from Portland to Green Bay
Search for one-way flight options from Portland to Green Bay. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Sat 8/166:10 amPWM - GRB

1 stop5h 01mUnited Airlines

Deal found 7/28

$312

Sat 8/166:00 amPWM - GRB

2 stops12h 56mAmerican Airlines

Deal found 7/28

$400

Fly from

Fly to

Route

Depart

Return

Price

PortlandGreen Bay

PWM - GRB

PWMGRB

Portland

Tue 8/26

8:00 am-2:35 pm

2 stops7h 35m

Green Bay Austin-Straubel

Wed 9/3

4:39 pm-10:43 pm

1 stop5h 04m

$374

PortlandGreen Bay

PWM - GRB

PWMGRB

Portland

Tue 9/9

11:50 am-11:22 pm

2 stops12h 32m

Green Bay Austin-Straubel

Wed 9/10

5:31 am-4:10 pm

2 stops9h 39m

$435

PortlandGreen Bay

PWM - GRB

PWMGRB

Portland

Tue 8/26

6:14 am-10:05 am

1 stop4h 51m

Green Bay Austin-Straubel

Wed 9/3

1:22 pm-9:59 pm

1 stop7h 37m

$439

PortlandGreen Bay

PWM - GRB

PWMGRB

Portland

Sat 8/16

6:10 am-10:11 am

1 stop5h 01m

$312

PortlandGreen Bay

PWM - GRB

PWMGRB

Portland

Sat 8/16

6:00 am-5:56 pm

2 stops12h 56m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Portland to Green Bay

Have a flexible travel schedule? Discover the best time to fly to Green Bay from Portland 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Green Bay

What is the cheapest month to book a flight from Portland, Maine to Green Bay?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Green Bay (average of $331). Flying from Portland, Maine to Green Bay in June is currently the most expensive (average of $460). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PWM to GRB?

It’s optimal to fly from Portland, Maine to Green Bay in the morning. By choosing this option you can save up to 53% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Portland, Maine to Green Bay?

Reviews of airlines servicing Green Bay

Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Portland to Green Bay 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.

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,977 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,899 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Portland, Maine to Green Bay round-trip?
Currently priced at $374, American Airlines will fly you from Portland, Maine to Green Bay and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $435 and $439, respectively. American Airlines is 22% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from Portland to Green Bay that include hotel bookings?
Yes. In addition to deals on Portland to Green Bay flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Green Bay?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Green Bay.
Can I find deals for business class flights from Portland to Green Bay?
Yes. Cheapflights offers flight deals from Portland to Green Bay by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland, Maine to Green Bay?
Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Green Bay (average of $331). Flying from Portland, Maine to Green Bay in June is currently the most expensive (average of $460). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Green Bay

Top airline flying from Portland to Green Bay

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$283	Average$558	FlexibilityNo cancel fee	On-time69%

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$312+ Cheap flights from Portland, ME to Green Bay (PWM - GRB)

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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Portland to Green Bay

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Find flight deals from Portland to Green Bay

Cheapest flights from Portland to Green BayExplore the most affordable flight options available from Portland to Green Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Portland to Green Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Green Bay that are best for you.

Best time to book a flight from Portland to Green Bay

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

Cheapflights Insights

Everything you need to know about your flight from Portland to Green Bay

What is the cheapest month to book a flight from Portland, Maine to Green Bay?

What is the cheapest time of day to fly from PWM to GRB?

Find hourly flight availability from Portland to Green Bay. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

How much does it cost to fly round-trip from Portland, Maine to Green Bay?

Reviews of airlines servicing Green Bay

Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Portland to Green Bay 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.

Related info for your journey

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

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

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

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

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

What is the cheapest month to book a flight from Portland, Maine to Green Bay?

Traveling to a place near Green Bay?

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Alternative routes for Portland to Green Bay

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Top airline flying from Portland to Green Bay

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Travel Smart

Cheapest flights from Portland to Green Bay
Explore the most affordable flight options available from Portland to Green Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.