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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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — MKE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 37 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

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 June 12, 2025.

Round-trip from

$331
(Frontier)

One-way from

$135
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$516
From Portland to Milwaukee-Mitchell
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One-way flight from Portland to Milwaukee-Mitchell
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 9/122:30 pmPDX - MKE
1 stop7h 29mAlaska Airlines
Sat 9/206:30 amMKE - PDX
1 stop6h 27mAlaska Airlines
Deal found 6/11$340
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/233:10 pmPDX - MKE
1 stop20h 46mSpirit Airlines
Sun 7/274:37 pmMKE - PDX
2 stops23h 38mSpirit Airlines
Deal found 6/11$341
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:50 pmPDX - MKE
2 stops9h 15mSouthwest
Mon 11/103:35 pmMKE - PDX
2 stops10h 00mSouthwest
Deal found 6/11$342
This CheapOair deal was found by Cheapflights users on 6/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/46:35 amPDX - MKE
1 stop10h 36mMultiple Airlines
Mon 7/79:20 pmMKE - PDX
1 stop15h 57mMultiple Airlines
Deal found 6/10$343
This Delta deal was found by Cheapflights users on 6/11. 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 8/147:25 pmPDX - MKE
2 stops11h 18mDelta
Wed 8/207:30 amMKE - PDX
2 stops11h 29mDelta
Deal found 6/11$344
This Sun Country Air deal was found by Cheapflights users on 6/11. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:10 pmPDX - MKE
1 stop21h 19mSun Country Air
Sun 7/276:24 pmMKE - PDX
1 stop6h 22mSun Country Air
Deal found 6/11$350
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/1211:59 pmPDX - MKE
1 stop8h 03mUnited Airlines
Thu 8/216:04 pmMKE - PDX
1 stop6h 38mUnited Airlines
Deal found 6/11$378
This Booking.com deal was found by Cheapflights users on 6/12. 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.
Fri 8/156:35 amPDX - MKE
1 stop10h 38mFrontier
Sun 8/248:02 pmMKE - PDX
2 stops16h 47mFrontier
Deal found 6/12$405
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 6/1212:59 amPDX - MKE
1 stop7h 38mAmerican Airlines
Wed 7/165:09 amMKE - PDX
1 stop6h 42mAmerican Airlines
Deal found 6/11$465

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 June 12, 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

Fri 8/15

6:35 am-7:13 pm

1 stop10h 38m

Milwaukee-Mitchell

Sun 8/24

8:02 pm-12:15 am

1 stop6h 13m

$331

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Fri 9/12

2:30 pm-11:59 pm

1 stop7h 29m

Milwaukee-Mitchell

Sat 9/20

6:30 am-10:57 am

1 stop6h 27m

$340

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Tue 7/15

3:10 pm-1:56 pm

1 stop20h 46m

Milwaukee-Mitchell

Fri 7/18

4:37 pm-2:15 pm

2 stops23h 38m

$341

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Fri 11/7

12:50 pm-12:05 am

2 stops9h 15m

Milwaukee-Mitchell

Mon 11/10

3:35 pm-11:35 pm

2 stops10h 00m

$342

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Fri 7/4

6:35 am-7:11 pm

1 stop10h 36m

Milwaukee-Mitchell

Mon 7/7

9:20 pm-11:17 am

1 stop15h 57m

$343

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Thu 8/14

7:25 pm-8:43 am

2 stops11h 18m

Milwaukee-Mitchell

Wed 8/20

7:30 am-4:59 pm

2 stops11h 29m

$344

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Mon 7/14

12:59 am-10:23 am

1 stop7h 24m

Milwaukee-Mitchell

Sat 7/19

5:09 am-9:49 am

1 stop6h 40m

$348

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Wed 7/23

6:10 pm-5:29 pm

1 stop21h 19m

Milwaukee-Mitchell

Sun 7/27

6:24 pm-10:46 pm

1 stop6h 22m

$350

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Tue 8/12

11:59 pm-10:02 am

1 stop8h 03m

Milwaukee-Mitchell

Thu 8/21

6:04 pm-10:42 pm

1 stop6h 38m

$378

PortlandMilwaukee

PDX - MKE

PDXMKE

Portland

Sun 7/13

10:23 am-1:56 pm

1 stop25h 33m

$135

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 19 results
1
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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 June 9, 2025.

Booking 37 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, February is the cheapest month in which you can book a flight from Portland to Milwaukee (average of $280). Flying from Portland to Milwaukee in June is currently the most expensive (average of $376). 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 June 12, 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 Monday evenings 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.

Rainfall in Milwaukee by month

Plan your trip to Milwaukee by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Milwaukee ranges from 1.4 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. January is typically the driest time to visit Milwaukee when rainfall is around 1.4 in.

Temperature in Milwaukee by month

Plan your trip to Milwaukee by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Milwaukee, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Portland to Milwaukee have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Frontier, at $331, was found to be the cheapest airline from Portland to Milwaukee.Alternate airlines to your destination round-trip include Alaska Airlines and Spirit Airlines. Frontier is currently priced 26% 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 Spirit Airlines. According to our data, you can fly for as low as $135. Users have also found prices from $139 and $140 on Hawaiian Airlines and Sun Country Air, 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, February is the cheapest month in which you can book a flight from Portland to Milwaukee (average of $280). Flying from Portland to Milwaukee in June is currently the most expensive (average of $376). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Mequon
Sheboygan
Oak Creek
Wauwatosa

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Alternative routes for Portland to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Portland to Milwaukee

Discover the top 7 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$58Average$228FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$286Average$426FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$305Average$471FlexibilityNo cancel feeOn-time75%
DeltaCheapest$317Average$448FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$326Average$469FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$362Average$514FlexibilityNo cancel feeOn-time63%

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