Find cheap flights from St. Louis to Milwaukee

STL - MKE

Find cheap flights from St. Louis to Milwaukee

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St. Louis (STL)
Milwaukee Milwaukee-Mitchell
Tue 12/1
Tue 12/8
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Good to know

Low season

August Best time to beat the crowds with an average 47% drop in price.

High season

May Most popular time to fly with an average 21% increase in price.

Average price round-trip

$219 (avg. price over the last 2 weeks)

Good deal round-trip

$200 or less

Good deal one-way

$106 or less

When to book flights from St. Louis to Milwaukee

Estimated round-trip price
Average price per month

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $106 or less one-way and $200 or less round-trip.
  • High season is considered to be April, May and June. The cheapest month to fly is August.
  • Morning departure is around 56% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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Top 3 airlines serving Lambert-St Louis to Milwaukee Milwaukee-Mitchell

Scores according to KAYAK customer reviews

7.2
American Airlines
Overall score based on 44,904 reviews
7.5
Boarding
7.1
Comfort
7.8
Crew
6.8
Entertainment
6.7
Food
Airline reviews

Pros: "Flight did not take place because of cancelled return flight. the whole itinerary was cancelled."
Cons: "because of cancelled flight I had to schedule a new itinerary directly through American Airlines. The cost increased from $947.50 to $1,873 plus airport parking for 17 days."

Pros: "I fflew Delta last Nov. Had meals movies dinner inks etc. American I am serv d beverages no meals and no movies. Getting ridiculous"

Pros: "Great seats in first class"
Cons: "N/a"

Pros: "We did get home. 24 hours late."
Cons: "We got home 24 hours late after sleeping in chairs in Dallas airport."

Pros: "Room between rows Entertainment from St Louis to Phoenix"

Pros: "We got to our destination safely, and American provided us with extra legroom seats."
Cons: "Service was curt and there was only phone-based entertainment."

Pros: "The crew was great"
Cons: "The seats were not comfortable and boarding was a pain. Not sure why you wouldn’t want to board from the back to front. Weather grounded us at our loading airport so we were stuck with the option of staying the flight or going in the lobby."

Pros: "They were gracious and courteous, the flight attendants. Very nice people."
Cons: "The last seat empty thing was weird but im sure that has to do with some new regulations or something and not the airline itself."

Pros: "Nothing"
Cons: "Flight was canceled after being delayed 3 times"

Pros: "Smooth boarding. On time flight"
Cons: "No gluten free snacks:("

Pros: "The flight was what one would expect from a domestic airline. They did provide free movies/tv which was nice. It was one time to leave and on time to arrive."

Cons: "There planes are just to tight and the seats are incredibly uncomfortable."

Pros: "Thankful for the pilot..."
Cons: "I'm not a fan of being bribed into credit cards, and the whole class system... Everyone is a human passenger"

Cons: "Me 6’ 200 lb sitting in middle seat next to somebody that needed 2 seats for self (pls understand I’m not unsensetive nor prejudice just stating a fact). I requested to sit in last row (of both sides of plane that were empty but attendant said sears reserved for attendants - 2)."

Pros: "To be fair. The flight is only 50 minutes. By th time you get a drink it's time to land. It is completely unfair to the staff to have to do that. A flight like that. Have a box with a snack and some coolers that have 5 different beverages. I wouldn't even sell booze. I person can hold out for a flight that shot to get one on the connection or in the terminal."
Cons: "It's always a cramped flight. Nothing to be done except use a bigger, more spacious plane. The good thing is it's the fastest way to get to Chicago from where I lived it would take 6hrs by car."

Pros: "Spacious seats"

Pros: "Mostly friendly staff and quick flight time."
Cons: "Only half the plane got snacks and drinks. Additionally, I was forced to check my bag, which is a pretty big deal because I was connecting to an international flight and was unable to retrieve my prescriptions in all the rush to check my bag."

Pros: "everything was on tyime"

Pros: "A nonstop flight, with a friendly efficient crew, met my expectations. A crew member went above and beyond when I asked for a coffee stirrer with my coke and ice."
Cons: "I've been spoiled by another airline's access to screens on the back of the headrest. I have my own hand held devices to entertain myself instead."

Cons: "Delayed a total of four hous!"

Pros: "Flight was on time, staff was friendly and boarding was organized."
Cons: "I'm a small person (5'-2", 105lbs) and I didn't have room to breathe in that tiny little seat."

Pros: "Boarding was smooth, staff was responsive and we arrived early. Basic flight - not bad and nothing wow."

Pros: "JAL is customer oriented and it's always a pleasant experience. Unfortunately, though the return trip is also JAL, the cabin crew isn't."

Pros: "Boarding was good, Good flight , good service , plane was small for the distance with limited space for movement ,"

Pros: "I loved how there were screens to pass the time with. I watched a movie the whole way back home and it really made the ride smooth and enjoyable. There were some great movie selections."
Cons: "I had trouble choosing one movie. Too many good movies."

Cons: "No food or beverages for me. I slept comfortably on my flight"

Pros: "We landed 30 minutes early."

Pros: "I don't know how airlines get away with all the stipulations and regualations they have in the buying process there is. Otho g I like about the scam artist they are"
Cons: "The fact they they can just make it a policy and then because the employees have to have a job and enforce it blows my mind. 200 dollar transfer fee plus the difference in the ticket when it's over two weeks in advance. You people are scam artist"

Pros: "You provide me with the best ticket prices and to me that was the the most important part of of the trip thx"
Cons: "The airlines charging for your luggage"

Pros: "Plenty of leg room no entertainment so I dozed."
Cons: "People stuffing oversized bags in overhead."

Pros: "The movies"
Cons: "No Food"

Pros: "One I love free sodies and two I love free sodies with a smile. I definitely got both with this flight crew."
Cons: "Not enough sodies and I couldn't smell my own farts."

Pros: "Frankly there isn't much to say here. After 7 flights in 2 weeks there was only 1 flight with great staff that actually cared about the customers and looked like they enjoyed their job. The rest treated guests with indifference at best."
Cons: "Customer service is dreadful, the planes are so old they still have cigarette lighter charges in first (but of course no adapters), no food/snacks of any significance, and they seemingly cancel flights at a whim with basically no staff to help re-book the lines of guests that have been disrupted. I pity those who loose luggage AA baggage services are flooded with lost baggage they just don't care any more. Seriously its embarrassing how little they care about customer service."

Cons: "We were delayed for 4 hours, due to a mechanical issue. We were not given any forms of reimbursement. I would like a 500.00 voucher."

Pros: "The crew moved quickly to get us in the air once we had a plane to get on."
Cons: "I waited in an airport for 10 hours because there wasn't a place to get on. They messed up the schedule then two different planes had problems that made them unsafe. This made me feel uneasy about flying with them at all. Overall not a good experience."

Cons: "Flight was delayed."

Pros: "Standard boarding"
Cons: "Once again more delays. Parked on the Tarmac for over half hour until takeoff. Don't know why but thankfully the pilot didn't lie like the previous flight."

Cons: "Would be nice to know ahead of time if flight is equipped with an in seat television so as to be prepared to bring headphones."

Pros: "We arrived safe."
Cons: "Departure 1.5 hours late. Missed connection. Travel took 16 hours instead of 6 hours."

Pros: "All great."

Cons: "Lack of bendable head rests Snack options"

Pros: "Everything was timely."
Cons: "No complaints"

Pros: "I was very pleased that the attendant gave me a free drink since I had a military ID. It was very kind of her."
Cons: "The flight was delayed multiple times. We were never informed as to why this was. It was very frustrating since I had a connecting flight into Tucson from Dallas. I got off the plane with twenty minutes to get to my next flight which was not in the same terminal. The plane was also incredibly hot while we waited to take off, I was beginning to become uneasy and nauseous."

Pros: "We had a small technical glitch and the pilot kept us updated. Nothing is more difficult than not knowing what is going on."

Pros: "Zero of it"
Cons: "The fact they cancelled this flight for no reason, didn't contact me at all even though they had all of my information and than barely tried to re book me. They wanted me to take 3 connecting the flights the next day. And the next flight I was able to get on 24 hours later, I almost wasn't allowed to check in because they couldn't find my reservation."

Pros: "Airplanes are newer with onboard entertainment of all sorts for both adults and kids alike. Seats are comfortable Checking in was a very quick easy process"
Cons: "Nothing"

Pros: "I was travelling with my handicapped wife, and the concern and consideration of all personnel was most appreciated. Bill"

Pros: "Easy and fast flight :)"

Pros: "The flight went smoothely once the plane got there and the crew were friendly."
Cons: "The plane got delayed a few hours."

Pros: "Very good service"

Pros: "Quick boarding, departed on time, arrived early, good cabin communication"
Cons: "This is a very cramped commuter jet, just one flight attendant to serve entire plane, she came by once for drinks but not a second time"

Pros: "Efficient crew. It"
Cons: "It was good overall."

Pros: "the fact that the flight arrived on time without delay and the gates were easy to locate."
Cons: "How on earth did my i arrived lagos and only one out of my two bags showed up, i have to extend my stay in lagos and hoping my bag will come the next day, i have to pay $100 extra just to extend my one night hotel booking to two nights."

Pros: "Crew was extremely friendly."
Cons: "Temperature was way too warm."

Pros: "Nothing"
Cons: "No meal on business, no free internet, no entertainment"

Pros: "smooth flight, good service"
Cons: "hold up to board family with 2 much luggage, overhead bins 2 small"

Pros: "Never been treated so disrespectful and like I was insignificant in allyour life!"

Pros: "Smaller crowd"
Cons: "Had to rush from one terminal to another to just barely make boarding, there was a bad smell on the plane, and the staff was not friendly."

Pros: "The boarding process went smoothly and was on schedule."
Cons: "Overhead compartment filled up and it was hard funding space for my bag."

Pros: "Friendly crew. Very short flight so rating entertainment & food is not really relevant. 15 minutes in the air."

Cons: "Massive delays on both flights out of O'Hare... No leg room...."

Pros: "Everything was great on the flight- we even got a snack ( stroopwafel cookie reminiscent of when I lived in Amsterdam ) and a drink. I haven't flown united in a while and was pleasantly surprised."
Cons: "Nothing but my flights were short ( under 1 hours)"

Pros: "What can you say ?? It's a 20 minute flight on a tiny cramped plane but it got us from A to B on time. Crew was as friendly as they needed to be. Landing was very hard."

Pros: "How helpful the flight attendants were. And how they didn't disturb me while I slept."
Cons: "How there wasn't much elbow room for the person sitting in the middle seat."

Cons: "Completely missed meeting due to 6 changes made during flight - Ask for a refund of some sort and non was given - not even air-miles or ticket recognition. Customer service from United was almost non existent. Will not be flying with united ever again."

Pros: "Good"
Cons: "Good"

Cons: "Little more time between flights would be nice"

Cons: "The flight was canceled with no explanation or an offer to reschedule. The next flight available was tomorrow afternoon which was not acceptable. When I asked customer service about a refund I was told to go to the website, but it was not guaranteed. Highly disappointed."

Pros: "Crew was efficient, professional and pleasant."
Cons: "No food; only a drink. Tight seating. No entertainment. The sun kept bouncing off the magazine and iPhone of the lady kitty-corner across the aisle into my eyes-- very uncomfortable!!"

Cons: "Luggage compartment too small even for a rolling laptop bag"

Pros: "I like the seats and the leg space .they were very comfortable ."
Cons: "No comment"

Cons: "The delay. It was approximately a 2 hour delay getting to Arcata."

Pros: "Wifi on flight"

Pros: "All the crew were friendly and accommodating."
Cons: "Waiting so long for the flight to actually take off. Very late !"

Pros: "Gate agent was great.... Have me an edit row seat. But my 90 minute flight from St Louis, led to a 40 minute wait for my bag"

Pros: "The smooth take off & landing. The flight attendants were very helpful."
Cons: "Nothing"

Pros: "New (to me) lime sparkling soda And a cookie too! Seemed to be a little more seat and leg room."
Cons: "I only wish your branded credit card did not cost$95.00 after first year."

Cons: "In Houston, At the gate with my ticket in hand, I was told I was not on the flight and would have to be scheduled on the next flight. The boarding pass in my hand matched the flight and time with the seat I picked out online when I purchased the ticket. Then a bad storm went through and many flights were cancelled. (Not the fault of United of course). About 9 hours later with a new boarding pass, I went to the gate to board and was told once again that I was not on that flight even though I was holding a new boarding pass!! What is going on here!? How can this happen twice to the same person, let alone happen at all??!"

Pros: "we were 10 minutes early to the gate"
Cons: "super cramped quarters, like touching legs to the next person the whole squirmy flight close... the plane was made for little people."

Pros: "We were on time and that was great!"

Pros: "The flight attendant tried to work with the overpacked plane."
Cons: "Overcrowded, items stolen from luggage, my bag was open when I was trying to get it off baggage claim, I only had half a seat, the flight smelled horrible."

Pros: "Price was lowest for that date and itinerary."
Cons: "Feels like United is second class compared to other carriers. I purchased this for my Morher-n-Law who rarely flies was traveling by herself. there were 7 gate changes 3 day of. I Was very concerned if she would make it."

Pros: "Rain delayed our take off but most of the time was made up. No complaints!"
Cons: "Forced to check our carry on suitcase even though there was plenty of room above the seats."

Pros: "Had crosswinds and thermals but pilot and crew handled it well. On time arriving,"

Cons: "Late out of Stl. Missed flight out of Chicago"

Cons: "Terrible gate issues, confusing layout, flight attendant was a bit harsh, very uncomfortable !"

Pros: "The crew was nice and the flight overall was pleaseant"
Cons: "Flight was delayed by more than an hour due to the first officer not showing up. In addition to that, the gate was changed several times, forcing everyone to move. Baggage took way too long to unload"

Pros: "Flight was on time"

Pros: "Same as above"
Cons: "Same as above"

Pros: "On time. Quick boarding, very efficient."
Cons: "Stewardess was a little grumpy."

Cons: "Delayed over an hour in STL, which caused me to miss my connection to Hartford. United rebooked me on Delta. I had to go from STL to Newark (United) then to Detroit to Hartford (Delta). I was in airports for over 14 hours. I was 7 1/2 hours late leaving compared to my original schedule and arrived at the hotel the next day. I had 5.5 hours of sleep for an interview that I traveled for in Hartfford. Thanks United."

Pros: "Nothing special"
Cons: "Plane was cramped."

Pros: "Short flight time. Solid ride."
Cons: "The guy sitting behind me."

Cons: "Flight cancelled due to mechanical, re-booked on Delta who had to re-book me on Alaska due to mechanical. An 8 hr trip turned to 22hrs."

Pros: "When we got to Chicago we didn't have a plane so we had to wait hours and then walked to another gate .. Wait for another hour and then they said we would not have anything to drink or eat in the flight"

Pros: "The attendant at the boarding counter was very helpful."
Cons: "As we are flying international and had a single itinerary, They didn't allow two checked in baggage's inspite of repeatedly explaining them that we have to take connecting flight which allows two checked in baggage's for each person."

Cons: "We were delayed by an hour plus and then when we got boarded we had to wait for the co-piolet and the stewardess to get done flirting and talking so we could get going and it was only a 18 minute flight from Chicago to Milwaukee and we sat waiting after being boarded for longer than that to get out of the airport and get going after having an hour plus layover because the crew taking us was on a different plane that took longer to get to the airport. We were then told they were late the day before so they had manitory time to rest so they were late that day because of it. Not our fault and then they screw around and sit for about 30 minutes after we were boarded"

Cons: "Our original flight got cancelled out of St Louis, not once did the service agent tell me I could rebook my connecting flights myself on my phone. When I found out, I successfully rebooked my partner's flight and my reservation disappeared. Because of this I was on standby (along with 87) other people while my partner had a ticket."

Pros: "Was fast and smooth"

Pros: "Good price on short notice. That will bring me back to a Frontier flight in a pinch."
Cons: "Baggage fees, Cramped seating, impatient personnel, and the website— good LORD they had about 10 screens trying to sell me more things before I could just check in!"

Cons: "crew was loud and unprofessional. they were talking the entire flight very loud and then talked about bad experiences they had in the past and their party lives.."

Pros: "They made me feel like it was safe to fall asleep"

Pros: "Very cheap"
Cons: "Very uncomfortable no elbow room or leg room and the chairs are hard."

Pros: "The staff that handled baggage was nice. Also, I liked that we made it safe."
Cons: "My flight was supposed to leave at 3:50...I got to the airport and went through security before I found out that my flight was delayed until 7:30. The flight kept getting pushed back. I waited 8 hours before the flight took off. There no outlets anywhere...leaving customers at a disadvantage because with our delay, our electronics were all almost dead or dead. There were no food options. We were supposed to get a voucher, and I have not received it. Lastly, after waiting over 8 HOuRS, we still had to pay for snack and drink. I was ripped off and will not be flying with Frontier again."

Pros: "Finally landing!"
Cons: "It felt like the rear end was going to come off the way it swayed after take off. The commode messed up causing a stench in the back of the plane, (where I was). The ride was very bumpy and the pilot intercom was hard to understand. We got delayed taking off and landing."

Pros: "My only good then was that I had wonderful passengers around me that were conversationalists who were entertaining and helpful!!"
Cons: "Can't you learn how to communicate faca to face with people? Let us know personally why we keep getting held up for take off, why we are being left in the dark, andehy you can't schedule more accurately! It doesn't help to fly somewhere if you miss the event you went to attend! Try compensating for our inconveniences for a change!!!!"

Cons: "Loudness And over priced EVERYTHING"

Pros: "new jet. enough leg room (i'm male, 5-10). Overhead bins are normal size (can hold typical carry on), not the microscopic ones. Everything was on time."
Cons: "STL ticket counter was only staffed 2 hours before the flight -- which makes sense if they didn't have more flights, but the signs weren't big and complete enough for passengers to realize what was going on and how we would check our luggage. So we were standing around a bit confused. Once Frontier people showed up, it was fine. Also, coming back to STL, I had a 2 hr shuttle bus ride that was leaving 30 minutes after arrival, and although the plane arrived on time, the luggage didn't reach me until 37 minutes after, so I had to get a hotel room for the night. I don't know how luggage handling works, so maybe not Frontier's fault at all. 30 minutes isn't much time, but it was a direct flight, so I thought it would work."

Pros: "The app worked great. The crew was good and even the cheapest seats were pretty comfortable."
Cons: "Not getting a complimentary snack or beverage."

Cons: "Tight seating not well padded. Crew very pleasant"

Pros: "Do not use frontier. There was a snow storm 4 days ago and frontier us still delaying every flight. All other airlines on time. Flight in was delayed3.5 hrs and return was delayed 3hrs. Again it has been sunshine and nice the last 3 days but frontier insits the issues are not there fault but weather related. Pay the extra money and fly anyone else."

Pros: "Worst airline ever. Cancelled the flight due to operational issues and had nothing to offer except a flight 4 days later. Total waste of time and money."
Cons: "Respectable airlines will offer you something to get to your destination - booked on another airline or at least a hotel if you are stuck. This is not a respectable airline."

Pros: "Friendly on time service"
Cons: "Baggage fees"

Pros: "We landed safely"
Cons: "The flight crew was atrocious. They were rude when they spoke to us and when I asked for refreshments they turned around as if to get them for me and then the lady sitting next to my husband had to get their attention again to ask a second time if I could have water and Chex Mix so I could take my medicine. I have serious health conditions and I couldn't even get water without paying $3 a bottle. It is disgusting to me that we are charged for flight and then charged for Refreshments during that flight. Any other Airline who charges for a seat to take you to your destination includes at least drinks and nuts for free but not you."

Pros: "Crew"
Cons: "Delayed,bag fee,seats are hard"

Pros: "Nothing"
Cons: "Flight was delayed for 4.5 hours for maintenance issues, we had to cancel all of the plans I made for the day. I was at the airport for nearly 7 hours and then had to wait on the replacement plane to refuel for over an hour after boarding. Awful."

Pros: "Flights were on time"
Cons: "Frontier has numerous fees, including fee for seat assignment, fee to "carry on" bag, charges for coffee and soda, etc. we will never fly that airline again. Seat room is smallest of any plane we've been on (and that's saying quite a bit)."

Pros: "I got where I was going to."
Cons: "One zone isn't even through the door and the next zone is called and all we do is stand in the very hot jetway for nearly 15 minutes. Being charged to pick our seat and for our luggage is ridiculous. It should be included in the price, if you have to raise the price then at least people would know better the true cost of their travel. Being charged for a drink! Having $1.99 put on a credit card! Wrong."

Cons: "Fee's for luggage and carry ons. In other airline its already included Fee's for luggage and carry ons. In other airline its already included. Delayed flight"

Cons: "You charge extra for everything."

Pros: "Good flight"
Cons: "Nothing bad"

Pros: "They did not loose my luggage"
Cons: "Cramped seating"

Pros: "Left on early and arrived early."
Cons: "Not very comfortable seats. Should be able to get water at least."

Pros: "Friendly staff, efficient boarding"
Cons: "Paying for a carry on bag (not making this more clear when booking), uncomfortable seats, cheap/small tray tables, no complimentary beverage service."

Cons: "Seats were as uncomfortable as detailed in earlier reviews. The Flight to Las Vegas was delayed due to weather, fair enough, updates on the status were non existent. Let the people who have paid know what their flight status is. The flight home was on time, HOWEVER, it too OVER 1 hour before bag return carrousel even started moving. This is why I gave a low crew rating. The in-flight crew was good, but the ground crew fails."

Cons: "The gate was very rude and refused to get a supervisor. The flight was closed early.we did not get home for two day .purchased another flight from American cost 500.00. Still did not make the connection. Still at the airport attempting to return to STL. Horrible costly experience."

Pros: "Non-stop flight, understanding service personnel"
Cons: "They don't allow carry on bags that are of normal size for free=>90$ extra hidden fee ; the personnel is overworked and checkin lines can be 100+yards long, we barely made to the boarding despite arriving more than 2 h in advance;the baggage arrived very late. The seats are nonreclining; you pay for almost all common drinks. Cannot comment on the crash risk factors, but given all this the odds are probably stacked more against you with this carrier..."

Cons: "It costs to carry on a bag on Frontier. When booking the flight we were looking for a reasonable price which we found with frontier, not reading the fine print they charged us for carry on bags. We ended up checking bags which cost us another $140. Along with this frustration, the seats are horribly uncomfortable and the amount of leg room is ridiculous. I understand maximizing out seats but this was way over the top. I will not be flying Frontier again"

Pros: "Awesome"

Pros: "they where friendly and the flight was comfy"
Cons: "This airline nickle and dimes you to death I was about to have to pay $60 to check my back pack witch had barely anything in it!"

Pros: "Nothing"
Cons: "Flight was delayed. Frontier could have cared less"

Pros: "Cheap"
Cons: "EVERTYHING is an added on cost, no frills, cramped,"

Cons: "The flight may be inexpensive, but the add on costs to book a seat and carry on a bag were ridiculous. Also, I didn't like that there wasn't a complimentary food or drink item. The line to check my bag was also extremely long and slow and they should have had more staff working."

Cons: "No food."

Pros: "I was very pleased from check in to arrival. Seats are comfortable and appreciated being offered water. Very efficient crew and seemed dedicated to their job. Had no surprises since all the info was in the paperwork. Will fly Frontier next time also."

Pros: "New plastic molded seats on the Airbus are much more comfortable than the old style seats. Flight cost was a bargain."
Cons: "Although the cost to book the flight was cheap, the costs added up with seat booking fee plus bag fees plus a charge for any drinks except water. No more freebies."

Cons: "The seats were not very comfortable. You have to pay for carry-on and checked luggage. Then you have to pay for water. Might as well have use a different airline and payed a little more. The price of water and luggage would make up the difference."

Pros: "Fantastic. Smooth ride all the way to Florida."

Pros: "The price was good. Boarding was relatively painless and quick. The plane appeared to be new and was pretty clean. We were on time and even a little early."
Cons: "The woman behind the counter in St Louis was not friendly. I prefer to be able to use my TSA pre check status rather than wait in a security line for 30 minutes but for whatever reason Frontier does not offer that luxury."

Pros: "Flight crew was fine"
Cons: "You have to pay $40-$60 each way for a carry on. Tiny stiff seats. Everything except for a cup of water was extra. The fold down tray was too small to hold food any way. I will never fly this airline again. I even heard people on the flight say they were booking a different airline on the return home.we were also two hours late to take off and 50 minutes late to take off on the return home. The online flight status for each said "on time""

Pros: "Your baggage policy is ridiculous and i might add a regressive fee inherently unfair. A single mother of 6 traveling to her mothers funeral will be hit harder by this than a business traveler. Many of us on the lower end of the income scale carry on to save what can be used on groceries pr heat. Yoir counter staff are also peremptory and rude. I will now factor these additional costs into your supposed fares you sjow online. Likely i will find other airlines are actually better deals. do you really think uoir cusyomers ste thos stupid? We know ur showing low fares and making it up w fees!"

Cons: "Delayed departure from 7AM to announced "possible" 12:30PM. Delay reportedly caused by "flight crew having timed-out" leaving our plane without a crew in Las Vegas. This very long delay made my trip unfeasible, forcing me to cancel my trip entirely, and my wife, having to shorten her stay in Florida by three days."

Cons: "seat fee; carry-on bag fee. When I buy tickets, I should have the right to know what my full cost will be, Sorry, I Am not an experienced flyer, but all the unknown add-on charges will make me loo a lot closer at ticket pricing on my next trip."

Cons: "Frontier airline charges for carryon luggage as well. The seats are really uncomfortable. They charge for every little thing."

Pros: "I was text the day before of a gate change. When i arrived in Denver there was another gate change and time change. Then after a couple hours there was another gate and time change. Thats a total of three gate changes and delays. Once in Milwaukee we taxi for about 30 minutes in the run way. And later the plane was parked and we sat for 2 hours at the gate because of ice that had not been removed. Frontier blamed the city. But I, like the rest of the passangers, watch other airlines come in and out without problems as we sat in tge plsne unable to get off. During the 2 hours of waiting not even a cup of water was offered. But on behalf of the crew, the pilot did his best to rectify the situation by helping chip away at the ice himself along wth the copilot and by continuously reassuring us by keeping us updated. However, this is an experience I will never forget. And I will never fly Frontier again. The $30 price difference does not make up for the inconvience that I and other passangers experienced. In addition, that $30 was used to pay for checking in my bags and additional charges for carry ons, a significant detail that was not mentioned during booking."

Pros: "Boarding was quick"
Cons: "Messed up name on ticket had to call to have changed (would have been charged online to do so) Only saw flight attendant once This airline really nickel&dimes you. Tickets cheap but you pay for absolutely anything you may need. If you travel with absolutely nothing than this airline may be good for you. This is my second time with frontier had poor to okay experiences both times, will avoid this airline in the future."

Pros: "Very disappointing - $45 to carry on a bag or $40 to check? Wish I would've paid the extra $100 to fly SW, Delta, United, ETC. The trays were 1/4 size of an iPad. You have to pay for a soda, water, or any beverage. The seats were small, uncomfortable, and didn't recline."

Cons: "Had to pay extra for luggage and a seat. Never had to pay for a seat before or carry on luggage. Should have spelled that out more clearly at time of booking!"

Cons: "No snacks, not comfortable at all, overpriced, yhere wasn't a significant amount of savings because I paid to carry on my bag, no snacks and not comfortable!"

Read more about American Airlines
COVID-19 information

Safety measures for airlines flying from St. Louis to Milwaukee

Airlines flying from St. Louis to Milwaukee have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from St. Louis to Milwaukee

Mandatory masks

Masks required on board, masks provided on flights from St. Louis to Milwaukee

Social distancing seating

Middle seats unavailable to book on flights from St. Louis to Milwaukee

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from St. Louis to Milwaukee

Book cheap flights from Lambert-St Louis to Milwaukee Milwaukee-Mitchell

Recent round-trip flight & train deals

12/12
Sat
1 stop
Amtrak
8h 49m
ZSV - ZML
12/13
Sun
1 stop
Amtrak
9h 30m
ZML - ZSV
12/12
Sat
1 stop
Amtrak
10h 32m
ZSV - KA7
12/13
Sun
1 stop
Amtrak
9h 20m
KA7 - ZSV
12/17
Thu
1 stop
Amtrak
11h 53m
RR2 - MKE
12/21
Mon
1 stop
Amtrak
8h 34m
MKE - RR2
12/18
Fri
1 stop
Amtrak
16h 08m
RR2 - MKE
12/21
Mon
1 stop
Amtrak
8h 34m
MKE - RR2
12/11
Fri
1 stop
Amtrak
16h 08m
RR2 - MKE
12/13
Sun
1 stop
Amtrak
9h 20m
MKE - RR2
12/11
Fri
1 stop
Amtrak
16h 08m
RR2 - MKE
12/13
Sun
1 stop
Amtrak
9h 20m
MKE - RR2
12/10
Thu
1 stop
Amtrak
11h 53m
RR2 - MKE
12/13
Sun
1 stop
Amtrak
11h 06m
MKE - RR2
12/10
Thu
1 stop
Amtrak
11h 53m
RR2 - MKE
12/13
Sun
1 stop
Amtrak
9h 20m
MKE - RR2
12/18
Fri
1 stop
Multiple Airlines
3h 23m
STL - MKE
12/20
Sun
1 stop
Multiple Airlines
5h 21m
MKE - STL
2/15
Mon
1 stop
United Airlines
3h 04m
STL - MKE
2/18
Thu
1 stop
United Airlines
3h 53m
MKE - STL
2/21
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1 stop
American Airlines
4h 36m
STL - MKE
2/24
Wed
1 stop
American Airlines
4h 41m
MKE - STL
12/18
Fri
1 stop
Multiple Airlines
3h 57m
STL - MKE
12/21
Mon
1 stop
Multiple Airlines
5h 39m
MKE - STL
12/21
Mon
1 stop
United Airlines
5h 46m
STL - MKE
12/30
Wed
1 stop
United Airlines
3h 22m
MKE - STL
12/6
Sun
1 stop
Multiple Airlines
3h 18m
STL - MKE
3/13
Sat
1 stop
Multiple Airlines
4h 58m
MKE - STL
12/27
Sun
1 stop
Multiple Airlines
3h 57m
STL - MKE
1/3
Sun
1 stop
Multiple Airlines
3h 17m
MKE - STL
12/23
Wed
1 stop
United Airlines
6h 43m
STL - MKE
12/27
Sun
1 stop
United Airlines
6h 42m
MKE - STL
12/18
Fri
1 stop
Frontier
27h 39m
STL - MKE
12/20
Sun
2 stops
Frontier
23h 59m
MKE - STL
12/23
Wed
1 stop
Frontier
12h 43m
STL - MKE
12/27
Sun
2 stops
Frontier
22h 13m
MKE - STL
12/18
Fri
2 stops
United Airlines
12h 40m
STL - MKE
12/21
Mon
2 stops
United Airlines
19h 36m
MKE - STL
12/18
Fri
3 stops
Multiple Airlines
26h 24m
STL - MKE
12/20
Sun
1 stop
Multiple Airlines
21h 10m
MKE - STL
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Recent one-way flight & train deals

12/7
Mon
1 stop
Amtrak
8h 33m
RR2 - MKE
12/17
Thu
1 stop
American Airlines
6h 36m
STL - MKE
12/17
Thu
2 stops
United Airlines
18h 36m
STL - MKE
12/17
Thu
3 stops
Multiple Airlines
47h 02m
STL - MKE

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Average price
Flights $210
Trains $121
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