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$135+ Cheap flights from Portland to Milwaukee (PDX - MKE)

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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MKE
Nov 18 — Nov 251
Tue 11/18
Tue 11/25
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Milwaukee-Mitchell are usually found in April or January, booked 35 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Find flight deals from Portland to Milwaukee

Cheapest flights from Portland to Milwaukee
Explore the most affordable flight options available from Portland to Milwaukee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2025.

This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:11 amPDX - MKE
2 stops10h 34mDelta
Sat 11/222:42 pmMKE - PDX
2 stops9h 58mDelta
Deal found 10/17$274
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:34 pmPDX - MKE
1 stop23h 21mAlaska Airlines
Thu 12/113:51 pmMKE - PDX
1 stop28h 04mAlaska Airlines
Deal found 10/17$294
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:49 pmPDX - MKE
1 stop19h 06mAlaska Airlines
Sun 12/143:51 pmMKE - PDX
1 stop20h 59mAlaska Airlines
Deal found 10/17$304
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:59 pmPDX - MKE
2 stops10h 16mDelta
Sun 11/237:20 amMKE - PDX
2 stops10h 13mDelta
Deal found 10/17$306
This United Airlines deal was found by Cheapflights users on 10/18. 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 12/315:00 amPDX - MKE
1 stop8h 00mUnited Airlines
Wed 1/75:00 amMKE - PDX
1 stop8h 57mUnited Airlines
Deal found 10/18$308
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:30 pmPDX - MKE
2 stops12h 58mDelta
Wed 1/75:00 pmMKE - PDX
2 stops8h 53mDelta
Deal found 10/18$312
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:14 amPDX - MKE
1 stop5h 55mAlaska Airlines
Thu 1/17:00 amMKE - PDX
1 stop9h 14mAlaska Airlines
Deal found 10/17$314
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:30 pmPDX - MKE
2 stops11h 19mDelta
Wed 1/75:00 pmMKE - PDX
2 stops8h 53mDelta
Deal found 10/18$322
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:52 pmPDX - MKE
1 stop28h 27mFrontier
Mon 11/38:04 pmMKE - PDX
1 stop17h 52mFrontier
Deal found 10/16$324

Cheap flight deals from Portland to Milwaukee

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Milwaukee (MKE). 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 October 19, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$274
(Delta)

One-way from

$135
(Kiwi.com)

Popular in

March

Cheapest in

April

Average price

$494
Provider with most accurate pricing for Portland-Milwaukee-Mitchell flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Milwaukee-Mitchell flights.
Search Deals
From Portland to Milwaukee-Mitchell
Search Deals
One-way flight from Portland to Milwaukee-Mitchell
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Milwaukee 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 October 19, 2025.
Use the filters below to find and compare flights from Portland to Milwaukee that are best for you.

Fly from

Portland

Fly to

Milwaukee

Route

Depart

Return

Price

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Sun 12/7

11:35 am-9:46 pm

2 stops8h 11m

Milwaukee-Mitchell

Sun 12/14

4:52 pm-12:15 am

2 stops9h 23m

$274

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Sat 11/15

9:11 am-9:45 pm

2 stops10h 34m

Milwaukee-Mitchell

Sat 11/22

2:42 pm-10:40 pm

2 stops9h 58m

$274

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Tue 2/10

12:55 am-10:11 am

1 stop7h 16m

Milwaukee-Mitchell

Sat 2/14

10:15 am-4:51 pm

1 stop8h 36m

$308

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Thu 11/20

7:59 pm-8:15 am

2 stops10h 16m

Milwaukee-Mitchell

Sun 11/23

9:10 am-3:33 pm

2 stops8h 23m

$323

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Wed 12/24

3:59 pm-1:28 pm

1 stop19h 29m

$135

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Fri 10/31

6:00 am-3:00 pm

1 stop7h 00m

$139

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Fri 10/31

10:52 am-9:59 pm

1 stop9h 07m

$140

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Sun 11/23

12:35 am-8:15 am

1 stop5h 40m

$140

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Wed 12/31

12:00 pm-8:35 pm

1 stop6h 35m

$140

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Thu 12/18

6:26 pm-5:27 pm

1 stop21h 01m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 14 results
1
2

Compare providers for flights from Portland to Milwaukee

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 Portland to Milwaukee in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust 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 Portland-Milwaukee flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Milwaukee flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Milwaukee flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Milwaukee 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 Portland-Milwaukee 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 Portland to Milwaukee

Have a flexible travel schedule? Discover the best time to fly to Milwaukee 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 Milwaukee

How far ahead should I book a flight from Portland to Milwaukee?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Milwaukee. Price data was last updated on October 17, 2025.

Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Milwaukee. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Portland to Milwaukee?

Currently, August is the cheapest month in which you can book a flight from Portland to Milwaukee (average of $88). Flying from Portland to Milwaukee in March is currently the most expensive (average of $256). 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 PDX to MKE?

Find hourly flight availability from Portland to Milwaukee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 19, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 9% on flights from Portland to Milwaukee by exploring options for tickets in the evening.

What is the cheapest day to fly from Portland to Milwaukee?

Use this chart to determine the cheapest time to fly round-trip from Portland to Milwaukee. Price data was last updated on December 16, 2024.

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

Reviews of airlines servicing Milwaukee

Get insights into the airlines that provide service to Milwaukee. 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 Milwaukee. Reviews last updated October 19, 2025.
Read through reviews of airlines operating flights from Portland to Milwaukee, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,134 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,976 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,994 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,026 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Portland to Milwaukee. 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 Portland to Milwaukee?

    Departing from Portland to Milwaukee will take you 8h 11m. Airlines will cover a distance of 1712 mi.

  • What are the cheapest airlines flying from Portland to Milwaukee round-trip?

    Frontier, at $128, was found to be the cheapest airline from Portland to Milwaukee.Alternate airlines to your destination round-trip include Delta and American Airlines. Frontier is currently priced 71% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland to Milwaukee one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $139. Users have also found prices from $140 and $140 on United Airlines and Delta, respectively.

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

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

  • How can I find direct flights from Portland to Milwaukee?

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

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

    Yes. Cheapflights offers flight deals from Portland to Milwaukee 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 to Milwaukee?

    Currently, August is the cheapest month in which you can book a flight from Portland to Milwaukee (average of $88). Flying from Portland to Milwaukee in March is currently the most expensive (average of $256). 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

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Sheboygan
Oak Creek
New Berlin
Wauwatosa

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Top 6 airlines flying from Portland to Milwaukee

Discover the top 6 airlines that operate flights from Portland to Milwaukee. 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 October 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$298FlexibilityNo cancel feeOn-time62%
DeltaCheapest$177Average$441FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$429FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$304Average$422FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$316Average$446FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$341Average$522FlexibilityNo cancel feeOn-time63%

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