What is the cheapest airline that flies from Portland to Milwaukee-Mitchell?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Portland to Milwaukee-Mitchell

What airlines fly to Milwaukee?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Milwaukee from Portland, Maine according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Milwaukee. Keep in mind that there are 6 different airlines that fly to Milwaukee on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Milwaukee-Mitchell Airport?

Prices for flights from Portland Airport to Milwaukee-Mitchell Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Portland Airport to Milwaukee-Mitchell Airport?

The number of operators available for flights from Portland Airport to Milwaukee-Mitchell Airport is 4 as of January 2026.

How old do you have to be to fly from Portland Airport to Milwaukee-Mitchell Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Milwaukee-Mitchell Airport.

What documentation or ID do you need to fly to Milwaukee-Mitchell Airport?

The travel and health documents required for your trip to Milwaukee-Mitchell Airport 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 Milwaukee-Mitchell Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$194 Cheap Flights from Portland to Milwaukee in 2026

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Find the cheapest flights from Portland, Maine to Milwaukee

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:43 pm - 5:13 pm

PWM

MKE

5h 30m

1 stop

7:00 am - 1:43 pm

MKE

PWM

5h 43m

1 stop

$319Delta

Fri, Feb 27 - Mon, Mar 2

11:56 am - 5:51 pm

PWM

MKE

6h 55m

1 stop

4:50 pm - 11:10 pm

MKE

PWM

5h 20m

1 stop

$329American Airlines

Thu, Apr 23 - Tue, Apr 28

6:00 am - 3:51 pm

PWM

MKE

10h 51m

2 stops

9:00 am - 5:07 pm

MKE

PWM

7h 07m

1 stop

$372American Airlines

Fri, Feb 27 - Mon, Mar 2

5:48 pm - 9:45 pm

PWM

MKE

4h 57m

1 stop

6:45 am - 12:09 pm

MKE

PWM

4h 24m

1 stop

$387Delta

Fri, Apr 10 - Sun, Apr 12

6:00 am - 5:31 pm

PWM

MKE

12h 31m

2 stops

1:25 pm - 9:09 pm

MKE

PWM

6h 44m

1 stop

$394United Airlines

Fri, Feb 27 - Mon, Mar 2

6:00 am - 5:31 pm

PWM

MKE

12h 31m

2 stops

11:30 am - 11:20 pm

MKE

PWM

10h 50m

2 stops

$399United Airlines

Fri, Feb 27 - Mon, Mar 2

6:00 am - 5:31 pm

PWM

MKE

12h 31m

2 stops

1:25 pm - 11:20 pm

MKE

PWM

8h 55m

2 stops

$400United Airlines

Fri, Feb 27 - Mon, Mar 2

6:00 am - 10:07 am

PWM

MKE

5h 07m

1 stop

6:00 am - 1:21 pm

MKE

PWM

6h 21m

1 stop

$404Delta

Thu, Jul 9 - Sun, Jul 12

7:00 am - 5:54 pm

PWM

MKE

11h 54m

2 stops

9:00 am - 5:07 pm

MKE

PWM

7h 07m

1 stop

$414American Airlines

Fri, Feb 27 - Mon, Mar 2

4:50 pm - 11:10 pm

PWM

MKE

7h 20m

1 stop

5:50 am - 3:20 pm

MKE

PWM

8h 30m

2 stops

$432Southwest

Thu, Apr 23 - Tue, Apr 28

Delta flights from Portland, Maine to Milwaukee

Our best Delta deals on Portland, Maine to Milwaukee flight tickets

Delta

Feb 27

PWM12:43 pmPortland

5h 30m

1 stop

MKE5:13 pmMilwaukee-Mitchell

Mar 2

MKE7:00 amMilwaukee-Mitchell

5h 43m

1 stop

PWM1:43 pmPortland

$319

Delta

Feb 14

PWM2:35 pmPortland

7h 01m

1 stop

MKE8:36 pmMilwaukee-Mitchell

Feb 18

MKE1:35 pmMilwaukee-Mitchell

8h 31m

1 stop

PWM11:06 pmPortland

$349

Delta

May 31

PWM6:00 amPortland

5h 07m

1 stop

MKE10:07 amMilwaukee-Mitchell

Jun 3

MKE6:00 amMilwaukee-Mitchell

6h 21m

1 stop

PWM1:21 pmPortland

$387

United Airlines flights from Portland, Maine to Milwaukee

Our best United Airlines deals on Portland, Maine to Milwaukee flight tickets

United Airlines

Feb 27

PWM6:00 amPortland

12h 31m

2 stops

MKE5:31 pmMilwaukee-Mitchell

Mar 2

MKE1:25 pmMilwaukee-Mitchell

6h 44m

1 stop

PWM9:09 pmPortland

$394

United Airlines

Feb 27

PWM6:00 amPortland

12h 31m

2 stops

MKE5:31 pmMilwaukee-Mitchell

Mar 2

MKE11:30 amMilwaukee-Mitchell

10h 50m

2 stops

PWM11:20 pmPortland

$399

United Airlines

Feb 14

PWM3:05 pmPortland

8h 21m

1 stop

MKE10:26 pmMilwaukee-Mitchell

Feb 18

MKE11:30 amMilwaukee-Mitchell

10h 50m

2 stops

PWM11:20 pmPortland

$449

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

12:43 pm-5:13 pm

1 stop5h 30m

Milwaukee-Mitchell

Mon 3/2

7:00 am-1:43 pm

1 stop5h 43m

$319

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Thu 4/23

11:56 am-5:51 pm

1 stop6h 55m

Milwaukee-Mitchell

Tue 4/28

4:50 pm-11:10 pm

1 stop5h 20m

$329

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

6:00 am-3:51 pm

2 stops10h 51m

Milwaukee-Mitchell

Mon 3/2

9:00 am-5:07 pm

1 stop7h 07m

$372

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 4/10

5:48 pm-9:45 pm

1 stop4h 57m

Milwaukee-Mitchell

Sun 4/12

6:45 am-12:09 pm

1 stop4h 24m

$387

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

6:00 am-5:31 pm

2 stops12h 31m

Milwaukee-Mitchell

Mon 3/2

1:25 pm-9:09 pm

1 stop6h 44m

$394

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

6:00 am-5:31 pm

2 stops12h 31m

Milwaukee-Mitchell

Mon 3/2

11:30 am-11:20 pm

2 stops10h 50m

$399

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

6:00 am-5:31 pm

2 stops12h 31m

Milwaukee-Mitchell

Mon 3/2

1:25 pm-11:20 pm

2 stops8h 55m

$400

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Thu 7/9

6:00 am-10:07 am

1 stop5h 07m

Milwaukee-Mitchell

Sun 7/12

6:00 am-1:21 pm

1 stop6h 21m

$404

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Fri 2/27

7:00 am-5:54 pm

2 stops11h 54m

Milwaukee-Mitchell

Mon 3/2

9:00 am-5:07 pm

1 stop7h 07m

$414

PortlandMilwaukee

PWM - MKE

PWMMKE

Portland

Thu 4/23

4:50 pm-11:10 pm

1 stop7h 20m

Milwaukee-Mitchell

Tue 4/28

5:50 am-3:20 pm

2 stops8h 30m

$432

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to Milwaukee

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

Prices

Airlines

What is the cheapest month to fly to Milwaukee?

The cheapest month to fly to Milwaukee from Portland, Maine is in November. Flight prices, which tend to average around $312, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Milwaukee, with average flight prices from Portland, Maine averaging around $329.

When to book flights from Portland, Maine to Milwaukee

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Milwaukee according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland, Maine to Milwaukee (PWM to MKE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Milwaukee

Fastest flight time	4h 57m
Direct flights	None

The fastest flight from Portland, Maine to Milwaukee takes 4h 57m

There are no direct flights from Portland, Maine to Milwaukee. There are no popular flight routes from Portland, Maine to Milwaukee.

Search flight deals

How far is Portland to Milwaukee-Mitchell by plane?
The distance between Portland and Milwaukee-Mitchell is about 885.6 mi. By plane, this route typically takes 4h 57m.
When did momondo last update prices for flights from Portland Airport to Milwaukee-Mitchell Airport?
Prices for flights from Portland Airport to Milwaukee-Mitchell Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Milwaukee-Mitchell Airport?
The number of operators available for flights from Portland Airport to Milwaukee-Mitchell Airport is 4 as of January 2026.
How old do you have to be to fly from Portland Airport to Milwaukee-Mitchell Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Milwaukee-Mitchell Airport.
What documentation or ID do you need to fly to Milwaukee-Mitchell Airport?
The travel and health documents required for your trip to Milwaukee-Mitchell Airport 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 Milwaukee-Mitchell Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland, Maine to Milwaukee?
Based on momondo bookings for flights between Portland, Maine and Milwaukee, the leading airline is American Airlines, making up 39% of the total bookings. Other popular airlines include Delta with 26%, Southwest with 18%, and United Airlines with 17%.

Best airlines flying from Portland, Maine to Milwaukee

Compare and see reviews for airlines that fly from Portland, Maine to Milwaukee with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $244	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Delta	PriceFrom $279	Free Cancellation	Rating 7.9 8,123 reviews	Search Delta flights
Southwest	PriceFrom $311	Free Cancellation	Rating 8.0 4,267 reviews	Search Southwest flights
American Airlines	PriceFrom $315	Free Cancellation	Rating 7.2 11,210 reviews	Search American Airlines flights

Sheboygan

Waukesha

Wauwatosa

Oak Creek

Mequon

Glendale

Pewaukee

Kohler

West Bend

Port Washington

New Berlin

Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Milwaukee?

It is quick and easy to find Portland to Milwaukee flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Milwaukee that suits you.

Can I find flights from Portland to Milwaukee with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Milwaukee from Portland with this policy.

How can momondo help me find flights from Portland to Milwaukee?

Once all potential Portland to Milwaukee flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Milwaukee, momondo offers a useful price alert feature which will track prices for flights to Milwaukee from Portland and alert you when they change.