MKE - PHX

$85 Find Cheap Flights from Milwaukee to Phoenix Sky Harbor Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Milwaukee to Sky Harbor Intl departing on 5/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Phoenix.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Phoenix.
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Everything you should know

Cheapest round-trip
$297
Typical prices: $429-$301
Frontier
Fri 5/22Sun 5/24
MKE - PHX • 1 stop
Cheapest non-stop
$299
Typical prices: $499-$343
Southwest
Tue 6/9Sat 6/13
MKE - PHX • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Southwest offers two free checked bags up to 50 lbs.
Set an alarm to check in 24 hours before for better boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $297 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines and Southwest. Average duration is 3h 45m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 88% on-time
Best time • Fewest delays
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $155 (round-trip)
Shortest trip • 5h 55m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
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+1
+1
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We hope you love your trip to Sky Harbor Intl!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Milwaukee to Sky Harbor Intl (MKE-PHX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Milwaukee to Sky Harbor Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Milwaukee to Sky Harbor Intl

Fri, May 22 - Sun, May 24
Frontier Logo
12:09 pm - 8:33 pm
MKE
-
PHX
10h 24m
1 stop
Frontier Logo
12:20 am - 8:01 am
PHX
-
MKE
29h 41m
1 stop
$297Frontier
Sat, Jul 25 - Fri, Jul 31
Frontier Logo
12:10 pm - 10:18 pm
MKE
-
PHX
12h 08m
1 stop
Frontier Logo
12:35 am - 7:58 am
PHX
-
MKE
29h 23m
1 stop
$298Frontier
Wed, Aug 12 - Tue, Aug 18
American Airlines Logo
2:41 pm - 4:17 pm
MKE
-
PHX
3h 36mnonstop
American Airlines Logo
8:30 am - 1:56 pm
PHX
-
MKE
3h 26mnonstop
$299American Airlines
Mon, May 18 - Fri, May 22
Frontier Logo
12:09 pm - 8:33 pm
MKE
-
PHX
10h 24m
1 stop
Frontier Logo
11:30 pm - 11:34 am
PHX
-
MKE
10h 04m
1 stop
$300Frontier
Sun, Jun 7 - Fri, Jun 12
Frontier Logo
8:46 am - 10:45 am
MKE
-
PHX
27h 59m
1 stop
Frontier Logo
11:40 pm - 11:13 am
PHX
-
MKE
9h 33m
1 stop
$301Frontier
Fri, May 15 - Thu, May 21
Frontier Logo
12:09 pm - 8:33 pm
MKE
-
PHX
10h 24m
1 stop
Frontier Logo
11:30 pm - 11:14 am
PHX
-
MKE
9h 44m
1 stop
$302Frontier
Fri, May 29 - Fri, Jun 5
Frontier Logo
12:09 pm - 8:33 pm
MKE
-
PHX
10h 24m
1 stop
Frontier Logo
11:30 pm - 11:34 am
PHX
-
MKE
10h 04m
1 stop
$304Frontier
Sat, May 30 - Sat, Jun 6
United Airlines Logo
7:15 pm - 11:37 pm
MKE
-
PHX
6h 22m
1 stop
United Airlines Logo
6:00 am - 1:25 pm
PHX
-
MKE
5h 25m
1 stop
$307United Airlines
Wed, Aug 12 - Tue, Aug 18
American Airlines Logo
2:41 pm - 4:17 pm
MKE
-
PHX
3h 36mnonstop
American Airlines Logo
12:18 pm - 10:59 pm
PHX
-
MKE
8h 41m
1 stop
$309American Airlines
Mon, May 18 - Fri, May 22
Frontier Logo
12:09 pm - 8:33 pm
MKE
-
PHX
10h 24m
1 stop
Frontier Logo
11:30 pm - 11:34 am
PHX
-
MKE
10h 04m
1 stop
$310Frontier
Booking Insights

KAYAK's insights & trends for Milwaukee to Sky Harbor Intl flights

Get data-powered insights and trends into flights from Milwaukee to Sky Harbor Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Milwaukee to Phoenix Sky Harbor Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Milwaukee to Phoenix Sky Harbor Intl Airport departing in May.

What’s the cheapest day of the week to fly from Milwaukee to Phoenix Sky Harbor Airport?

The average price of all round-trip flights from Milwaukee to Phoenix Sky Harbor Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Phoenix Sky Harbor Airport on a Tuesday and more expensive on a Sunday. On your return trip to Milwaukee, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Milwaukee to Phoenix Sky Harbor Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Milwaukee to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Milwaukee to Phoenix Sky Harbor Intl Airport is September, where tickets cost $315 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $419 and $404 respectively.

Can I save money by flying with a layover from Milwaukee to Phoenix Sky Harbor Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $405 on average.

How far in advance should I book a flight from Milwaukee to Phoenix Sky Harbor Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Milwaukee to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Milwaukee to Phoenix Sky Harbor Intl Airport, you should book around 5 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from Milwaukee to Sky Harbor Intl

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonJuly
Cheapest flight$85
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Milwaukee to Phoenix Sky Harbor Airport

When to book flights from Milwaukee to Sky Harbor Intl

Are your dates flexible? Find out the best times to travel from Milwaukee to Sky Harbor Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Milwaukee to Phoenix Sky Harbor Airport flights

  • Is there an interesting location I can check out at MKE?

    While at MKE, one of the interesting destinations you can check out is the Gallery of Flight Aviation History Museum, situated on the upper level of the Main Terminal, between concourses C and D. At this well-maintained establishment, you'll get the chance to view old artifacts that belonged to pioneer aviators of Wisconsin and Milwaukee.

  • Where are the ATMs at MKE located?

    If you'd like to withdraw cash at MKE, there are several ATMs you can use at the airport. A good number of these ATMs are found on the Upper Level of the Main Terminal, while the rest are situated at Airside, in Concourses C and E.

  • Is there a place I can relax before leaving PHX?

    Before leaving PHX, you can enjoy relaxing services at one of the two XpresSpa locations in Terminal 4. At either, you'll enjoy quality massage therapies, manicures, and pedicures.

  • Does PHX have an on-site hotel?

    PHX does not have an on-site hotel. However, it is close to hotels like Aloft Phoenix Airport, Hyatt Place Tempe, Hilton Garden Inn Phoenix Airport, and Crown Plaza Phoenix Airport. Hence, if you'd like to stay at a hotel near this airport, there are various fabulous hotels you can choose to reside in.

  • What is the cheapest flight from Milwaukee to Phoenix Sky Harbor Intl Airport?

    In the last 3 days, the lowest price for a flight from Milwaukee to Phoenix Sky Harbor Intl Airport was $85 for a one-way ticket and $297 for a round-trip.

  • Do I need a passport to fly between Milwaukee and Phoenix Sky Harbor Airport?

    No

  • Which airlines offer Wi-Fi service onboard planes from Milwaukee to Phoenix Sky Harbor Airport?

    American Airlines, JetBlue, Delta, Hawaiian Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Milwaukee to Phoenix Sky Harbor Airport flight route.

  • Which aircraft models fly most regularly from Milwaukee to Phoenix Sky Harbor Airport?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Milwaukee to Phoenix Sky Harbor Airport flight route.

  • Which airline alliances offer flights from Milwaukee to Phoenix Sky Harbor Airport?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Milwaukee and Phoenix Sky Harbor Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Milwaukee to Phoenix Sky Harbor Airport?

    There are nonstop flights from Milwaukee to Phoenix Sky Harbor Airport on a daily basis.

  • Which is the best airline for flights from Milwaukee to Phoenix, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Milwaukee to Phoenix are Southwest and Delta. With an average price for the route of $369 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $321 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Milwaukee to Phoenix Sky Harbor Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Milwaukee to Phoenix Sky Harbor Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to Phoenix Sky Harbor Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix Sky Harbor Airport from Milwaukee is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Milwaukee to Phoenix Sky Harbor Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phoenix Sky Harbor Airport with an airline and back to Milwaukee with another airline. Booking your flights between Milwaukee and PHX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Milwaukee to Phoenix Sky Harbor Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phoenix Sky Harbor Airport from Milwaukee up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Milwaukee to Phoenix Sky Harbor Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $200 or less one-way and $357 or less round-trip.
  • To fly from Milwaukee to Phoenix, you can board your flight at either Milwaukee Mitchell International Airport (MKE) or O'Hare International Airport (ORD). MKE is considerably closer to Milwaukee than ORD. It also experiences lesser traffic than the Chicago-based airport. This being the case, if you plan on flying to Phoenix from Milwaukee, choosing a flight that departs at MKE would be a wise move.
  • If you're traveling with your kid to Phoenix, you should consider visiting one of the two children's play areas in MKE. One is situated in Concourse C opposite Chilli's, while the other is in Concourse D, between Gates D30 and D34. At either of these kids' play areas, your child will have lots of fun, as they both feature colorful toys and interactive displays.
  • There are three nursing rooms in the Main Terminal of MKE you can use to breastfeed your child privately. Located near Gate C9 in Concourse C, Gate D36 in Concourse D, and opposite Miller's House, these nursing rooms feature power outlets you can use to charge your breast pumps.
  • Phoenix Sky Harbor International Airport (PHX) is home to a chapel. Located on Level 3 of Terminal 4, this chapel is always open. Given that it is an interfaith chapel, you're welcome to visit it, regardless of your religion.
  • If you have questions about PHX or need assistance at this airport, you should visit any of the information desks at the airport. In Terminal 3, there are two information desks, one on Level 1 and the other on Level 2. In Terminal 4, there are two information desks on level one, near Door 2 and Door 7, and another two on Level 3, near A and D Checkpoints and B and C Checkpoints.

Prefer to fly direct from Milwaukee to Phoenix Sky Harbor Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Milwaukee-Mitchell to Phoenix Sky Harbor Intl.
Find which airlines fly direct from Milwaukee-Mitchell Airport to Phoenix Sky Harbor Intl Airport, which days they fly and book direct flights.

Direct departures

Milwaukee-Mitchell to Phoenix Sky Harbor Intl

Monday

American Airlines,Southwest

American Airlines,Southwest

Tuesday

American Airlines,Southwest

American Airlines,Southwest

Wednesday

American Airlines,Southwest

American Airlines,Southwest

Thursday

American Airlines,Southwest

American Airlines,Southwest

Friday

American Airlines,Southwest

American Airlines,Southwest

Saturday

American Airlines,Southwest

American Airlines,Southwest

Sunday

American Airlines,Southwest

American Airlines,Southwest

See more direct flights

Direct returns

Phoenix Sky Harbor Intl to Milwaukee-Mitchell

Monday

American Airlines,Southwest

American Airlines,Southwest

Tuesday

American Airlines,Southwest

American Airlines,Southwest

Wednesday

American Airlines,Southwest

American Airlines,Southwest

Thursday

American Airlines,Southwest

American Airlines,Southwest

Friday

American Airlines,Southwest

American Airlines,Southwest

Saturday

American Airlines,Southwest

American Airlines,Southwest

Sunday

American Airlines,Southwest

American Airlines,Southwest

See more direct flights

Reviews of the top 5 airlines serving from Milwaukee to Sky Harbor Intl

 
See real verified KAYAK customer reviews for airlines flying from Milwaukee to Phoenix. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Milwaukee to Sky Harbor Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4306 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

2.0 MediocreJoshua, May 2026
TPA - LAS
Read more Southwest reviews

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

The seats need better cushioning for a nearly 5-hour flight, it was a bit uncomfortable. I'm glad American has free wi-fi but there were was a bout 30 minutes in the middle of the flight when there was no connection which was frustrating.

My original flight got delayed day of so I had to rebook it from one layover to two layovers. The flight also left earlier which was a slight inconvenience but manageable. Then my first connection flight got delayed 3 separate times for a total of 2 hours delayed, causing me to miss my second connection flight back to Santa Barbara. Now, because of this missed flight, I am missing my college classes that I pay for.

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

On time flight, good communication about boarding, lines didn't form unnecessarily for boarding before their group was announced (kept aisles clear), friendly flight attendants and service

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

I didn't go from Reno to Phoenix I ended up going from Reno to Dallas to Tucson because my flight rebooked because my Amtrak was late I tried notifying you guys I also don't know what you ask me about my flight because you guys didn't book my flight

The flight attendant was friendly and efficient. The temperature was kept nice and cool. The plane was nice, but filthy. There were visible spills on my tray table. The gate agent was somewhat rude with her announcements and in speaking with other customers.

Great experience. Good dinner and service. FA's were very nice and attentive.

Boarding and crew were great, but seats are terribly uncomfortable. No food or entertainment options.

Everything went very smoothly! Thanks for a great first experience flying with small children!

Crew members great. Everything else a 0! Got on plane at 530am. Got de boarded for mechanical issue. Supposed to leave by 830 am. Zero communication from gate agents. Then supposed to leave by 230pm. Then delayed till 330pm. Still zero communication with gate agents. All they would say is if you have an issue call the 1800 number. You call and sit on hold minimum 45 minutes for zero answer. Finally board at 345pm didn’t take off till after 4pm! Sat in airport for 11 hours with 4 adults and 3 kids. Finally offered a $100 (we are sorry) voucher for next trip. Missed whole day in Florida had to change reservations in Florida! Absolute joke of an airline! And I usually really like sun country.

Booked through Kayak for $236. They canceled the flight unknown to me; retaining $100 for canceling it. Found out when I went to check in. Rebooked the same flight for $400. Incredibly disappointed. The Sun Country part was as to be expected. Crowded, no food, no arm room but got me where I wanted to go.

3 seperate extremely rude unhelpful staff. Delayed flight. Lost my bag

Sat between 2 big men. I was uncomfortable. Flight was delayed twice. About 2 hours altogether.

It was a good experience. I do wish the seats were roomier. Also, I did not like being charged for my carry on bag

Exceptional take off and landing in snow and wind…thank you to the well skilled pilots!

I liked entertainment system being downloaded on my iPad. The selections were limited but I appreciated being able to use my own screen. The flight was just fine. My only issue was both terminals being far from the main airport. Especially stoning at LAX near midnight and having to wait for a bus to take us to baggage pickup. Very inconvenient.

Just fine but comfort is always an issue since the seats are so close

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

Everything you need to know for your flight from Milwaukee to Sky Harbor Intl

Other airlines flying to Milwaukee

Flight deals from the most popular airlines with KAYAK users flying the route