MKE - SAT

$129 Find Cheap Flights from Milwaukee to San Antonio - Compare and Save

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 San Antonio departing on 10/22. 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

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Everything you should know

Cheapest round-trip
$248
Typical prices: $368-$609
Frontier
Thu 8/27Sat 9/5
MKE - SAT • 1 stop
Cheapest one-way
$129
Typical prices: $147-$259
Frontier
Thu 10/22
MKE - SAT • 1 stop
Top airlines
Cheapest • from $328 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Milwaukee and San Antonio. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $245 (round-trip)
Shortest trip • 4h 35m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 42% compared to booking last minute.
Insights
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When to travel
Cheapest • 18% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Milwaukee to San Antonio (MKE-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Milwaukee to San Antonio 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 San Antonio

Thu, Aug 27 - Sat, Sep 5
Frontier Logo
12:10 pm - 8:56 amMKE  Milwaukee-Mitchell-SAT San Antonio
20h 46m1 stop Orlando
Frontier Logo
9:51 am - 11:13 amSAT  San Antonio-MKE Milwaukee-Mitchell
25h 22m1 stop Orlando
$248Frontier
Thu, Oct 22 - Mon, Oct 26
Frontier Logo
8:10 pm - 9:39 amMKE  Milwaukee-Mitchell-SAT San Antonio
13h 29m1 stop Orlando
Frontier Logo
10:34 am - 7:15 pmSAT  San Antonio-MKE Milwaukee-Mitchell
8h 41m1 stop Orlando
$328Frontier
Fri, Sep 18 - Tue, Sep 22
American Airlines Logo
8:31 am - 1:59 pmMKE  Milwaukee-Mitchell-SAT San Antonio
5h 28m1 stop Chicago O'Hare Intl
American Airlines Logo
6:00 am - 11:27 amSAT  San Antonio-MKE Milwaukee-Mitchell
5h 27m1 stop Dallas/Fort Worth
$343American Airlines
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
7:30 am - 2:11 pmMKE  Milwaukee-Mitchell-SAT San Antonio
6h 41m1 stop Chicago O'Hare Intl
American Airlines Logo
2:03 pm - 9:48 pmSAT  San Antonio-MKE Milwaukee-Mitchell
7h 45m1 stop Dallas/Fort Worth
$343American Airlines
Thu, Aug 27 - Sat, Sep 5
Delta Logo
6:43 pm - 12:28 amMKE  Milwaukee-Mitchell-SAT San Antonio
5h 45m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:55 am - 4:14 pmSAT  San Antonio-MKE Milwaukee-Mitchell
8h 19m1 stop Atlanta Hartsfield-Jackson
$362Delta
Thu, Sep 3 - Sun, Sep 6
Delta Logo
3:01 pm - 9:04 pmMKE  Milwaukee-Mitchell-SAT San Antonio
6h 03m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:15 am - 12:45 pmSAT  San Antonio-MKE Milwaukee-Mitchell
7h 30m1 stop Detroit Metropolitan Wayne County
$362Delta
Thu, Sep 10 - Tue, Sep 15
Southwest Logo
2:00 pm - 9:30 pmMKE  Milwaukee-Mitchell-SAT San Antonio
7h 30m1 stop Denver Intl
Southwest Logo
7:45 am - 2:30 pmSAT  San Antonio-MKE Milwaukee-Mitchell
6h 45m1 stop Phoenix Sky Harbor Intl
$364Southwest
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
5:00 am - 11:52 amMKE  Milwaukee-Mitchell-SAT San Antonio
6h 52m1 stop Chicago O'Hare Intl
United Airlines Logo
5:30 pm - 10:36 pmSAT  San Antonio-MKE Milwaukee-Mitchell
5h 06m1 stop Chicago O'Hare Intl
$364United Airlines
Wed, Sep 2 - Thu, Sep 10
United Airlines Logo
5:00 am - 11:52 amMKE  Milwaukee-Mitchell-SAT San Antonio
6h 52m1 stop Chicago O'Hare Intl
United Airlines Logo
1:00 pm - 6:54 pmSAT  San Antonio-MKE Milwaukee-Mitchell
5h 54m1 stop Chicago O'Hare Intl
$364United Airlines
Thu, Aug 27 - Sat, Sep 5
Southwest Logo
5:45 am - 2:10 pmMKE  Milwaukee-Mitchell-SAT San Antonio
8h 25m2 stops Chicago Midway Phoenix Sky Harbor Intl
Southwest Logo
12:20 pm - 6:30 pmSAT  San Antonio-MKE Milwaukee-Mitchell
6h 10m1 stop Nashville Intl
$367Southwest
Booking Insights

KAYAK's insights & trends for Milwaukee to San Antonio flights

Get data-powered insights and trends into flights from Milwaukee to San Antonio 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 San Antonio?

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 San Antonio departing in August.

Flight prices are below average for this route right now.

Flights to San Antonio from Milwaukee usually cost between $375 and $792 in August.
The lowest price found in the past 5 days was $248 on Frontier (Aug 27-Sep 5).

What is the cheapest month to fly from Milwaukee to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Milwaukee to San Antonio, 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 San Antonio is January, where tickets cost $370 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is $662 and $488 respectively.

How far in advance should I book a flight from Milwaukee to San Antonio?

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 San Antonio, 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 San Antonio, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low season

April

Cheapest flight

$129
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Milwaukee to San Antonio

When to book flights from Milwaukee to San Antonio

Are your dates flexible? Find out the best times to travel from Milwaukee to San Antonio 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 flights from Milwaukee to San Antonio

  • What is the cheapest flight from Milwaukee to San Antonio?

    In the last 5 days, the lowest price for a flight from Milwaukee to San Antonio was $129 for a one-way ticket and $328 for a round-trip.

  • Do I need a passport to fly between Milwaukee and San Antonio?

    No, a passport isn't needed to fly from Milwaukee to San Antonio. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Milwaukee to San Antonio?

    On your way to San Antonio, you’ll fly out from Milwaukee-Mitchell. You’ll be landing at San Antonio.

  • Which aircraft models fly most regularly from Milwaukee to San Antonio?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Milwaukee to San Antonio?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Milwaukee and San Antonio, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Milwaukee to San Antonio are Southwest and Delta. With an average price for the route of $455 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $406 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Milwaukee to San Antonio?

    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 San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio 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 San Antonio?

    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 San Antonio with an airline and back to Milwaukee with another airline. Booking your flights between Milwaukee and SAT 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 San Antonio?

    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 San Antonio from Milwaukee up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Milwaukee to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Milwaukee to San Antonio. 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 San Antonio? 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.
8.0
SouthwestOverall score based on 4216 reviews
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

10.0 ExcellentK, Jun 2026
Read more Southwest reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

It was good. I wish you had gluten free snacks for my husband.

We were headed for Florida and anxious to get there. Everything was absolutely the best. This is our first time with Southwest and it’s now our go to airline. Best ever.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

Pretty standard flight. Delta has a good selection of movies.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

Despite being delayed, we would still give a high score for this flight experience. For the first time in quite some time we had excellent customer service throughout our entire round trip. The flight attendants were the most polite we have experienced in our last ten flights at least (non of which were Delta and include business class). The food offered was a better selection than most—we just didn’t have any of it. Overall, almost as good as flying used to be. Thank you to Delta.

Very stressful to locate United Airline boarding area, delayed flight, changing boarding area again to another location with all tiredness 😩. But flying was fine.

Flight staff and all was fine. Food always sucks on planes so nothing new.

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

No access to the Wi-Fi, noisy group of people made it difficult for me to hear through my earbuds. Snacks and drinks - limited service when your seat is at the back of the plane - people up front are always served first and the back gets whatever is left. Not pleased.

The seats on the aircraft are like sitting in a rock. During the boarding process they recognize Active Duty Military, why don’t they recognize Retired Military. I’ve always preferred Delta, this flight confirmed why I still prefer Delta.

It was literally one of the worst travel experiences ever. My flight got delayed by over an hour and there was no communication of this from the gate staff. I realized it by checking the screen periodically. Once on board the flight attendants continued to serve alcohol to a man who was clearly already drunk and that was making a bunch of commotion. Never again will I fly United!

Didn't make it dir to delays - no support from United staff

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

All good except paid for wifi that did not work

The power outlets were not working for my row. Also felt like the seats have gotten smaller. I was in the window seat and felt like suffocated, as the two passengers next to me were tall and wide.

No AC, no beverage service and no explanation from the captain. 4 flight legs in 2 days with no internet service.

The gate experience at LAX was abysmal (same for the arrival experience two days prior). Despite the LAX -> SAT schedule of two flights daily, our departure gate was at a smaller hub that we had to be bussed to from Terminal 4. Fortunately, I arrived at LAX extra early and had time to spare, but if I had not known, I might have missed my flight. I looked at the LAX airport map in the AA app and there was no indication of the additional boarding process. Lastly the gate area we were bussed to was crowded with limited food and beverage options. On flight, the fight attendant was hospitable and attentive, the flight was smooth, and AA's free (and working) wifi for AA members were all on the positive side.

Got home at 3am after deboarding the plane. No compensation offered by American

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

There were several different delays but we ended up being delayed a total of 40 mins or so. It was annoying we had a gate change which made it take longer to leave DFW, and we had to check our carry on. Ugh

The counter/baggage counter was busy and so many people missed flights. We got stuck sitting on the plane over 2 hours at the gate while they were doing an inspection is wrong. Many of us missed our connecting flights because of it.

We were told we had no flights before our flight was continually delayed then cancelled.

Everything you need to know for your flight from Milwaukee to San Antonio

Information on your arrival and departure airports