Travel with Axel,
get the best price.

Route overview: Milwaukee to Saint Louis (STL) flight deals

Milwaukee → Saint Louis

Dec 13, 2026 · return Dec 14, 2026

MKE → STL1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Mon, Dec 14

Southwest Airlines
7:55 amMKE
1h 25m
Nonstop
9:20 amSTL
Southwest Airlines
9:50 pmSTL
1h 20m
Nonstop
11:10 pmMKE

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Mon, Dec 14

Southwest Airlines
3:40 pmMKE
1h 20m
Nonstop
5:00 pmSTL
Southwest Airlines
9:50 pmSTL
1h 20m
Nonstop
11:10 pmMKE

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Mon, Dec 14

United Airlines
7:45 amMKE
4h 37m
ORD · 1h 47m
12:22 pmSTL
United Airlines
5:25 amSTL
6h 3m
ORD · 3h 27m
11:28 amMKE

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Mon, Dec 14

American Airlines
2:51 pmMKE
5h 1m
ORD · 2h 7m
7:52 pmSTL
American Airlines
11:37 amSTL
4h 47m
ORD · 2h 18m
4:24 pmMKE

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Mon, Dec 14

Delta Air Lines
1:12 pmMKE
4h 8m
DTW · 1h 9m
5:20 pmSTL
Delta Air Lines
2:17 pmSTL
5h 48m
DTW · 2h 54m
8:05 pmMKE

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Mon, Dec 14

Southwest Airlines
6:20 amMKE
4h 40m
MDW · 2h 20m
11:00 amSTL
Southwest Airlines
9:50 pmSTL
1h 20m
Nonstop
11:10 pmMKE

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Mon, Dec 14

Southwest Airlines
9:45 amMKE
5h 40m
MCI · 3h
3:25 pmSTL
Southwest Airlines
9:50 pmSTL
1h 20m
Nonstop
11:10 pmMKE

Round-trip total · 1 adult · Taxes included

Make this trip yours

MKE ⇄ STL

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 12, 2026 → Dec 13, 2026Dec 14, 2026 → Dec 15, 2026
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Milwaukee (MKE) to Saint Louis (STL), Dec 13, 2026 · return Dec 14, 2026

Route overview: Milwaukee to Saint Louis (STL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-14Southwest AirlinesWN3112 / WN4919$260.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14United AirlinesUA5412 + UA1857 / UA4439 + UA5234$320.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14American AirlinesAA4920 + AA4372 / AA3198 + AA6282$330.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14Delta Air LinesDL3848 + DL2822 / DL1371 + DL3724$350.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14Southwest AirlinesWN3113 / WN4919$260.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14Southwest AirlinesWN4802 + WN1089 / WN4919$275.002026-10-29T01:30:26Z
2026-12-13 → 2026-12-14Southwest AirlinesWN1086 + WN2714 / WN4919$275.002026-10-29T01:30:26Z

2026-12-13 → 2026-12-14 · $260.00

  • Southwest Airlines WN3112: MKE 2026-12-13 07:55:00 → STL 2026-12-13 09:20:00; nonstop; 85 minutes. Local airport times.
  • Southwest Airlines WN4919: STL 2026-12-14 21:50:00 → MKE 2026-12-14 23:10:00; nonstop; 80 minutes. Local airport times.

2026-12-13 → 2026-12-14 · $320.00

  • United Airlines UA5412 / UA1857: MKE 2026-12-13 07:45:00 → STL 2026-12-13 12:22:00; 1 stop(s) via ORD; 277 minutes. Local airport times.
    • UA5412: MKE 2026-12-13 07:45:00 → ORD 2026-12-13 09:05:00; layover at ORD: 107 minutes.
    • UA1857: ORD 2026-12-13 10:52:00 → STL 2026-12-13 12:22:00.
  • United Airlines UA4439 / UA5234: STL 2026-12-14 05:25:00 → MKE 2026-12-14 11:28:00; 1 stop(s) via ORD; 363 minutes. Local airport times.
    • UA4439: STL 2026-12-14 05:25:00 → ORD 2026-12-14 06:58:00; layover at ORD: 207 minutes.
    • UA5234: ORD 2026-12-14 10:25:00 → MKE 2026-12-14 11:28:00.

2026-12-13 → 2026-12-14 · $330.00

  • American Airlines AA4920 / AA4372: MKE 2026-12-13 14:51:00 → STL 2026-12-13 19:52:00; 1 stop(s) via ORD; 301 minutes. Local airport times.
    • AA4920: MKE 2026-12-13 14:51:00 → ORD 2026-12-13 16:12:00; layover at ORD: 127 minutes.
    • AA4372: ORD 2026-12-13 18:19:00 → STL 2026-12-13 19:52:00.
  • American Airlines AA3198 / AA6282: STL 2026-12-14 11:37:00 → MKE 2026-12-14 16:24:00; 1 stop(s) via ORD; 287 minutes. Local airport times.
    • AA3198: STL 2026-12-14 11:37:00 → ORD 2026-12-14 12:59:00; layover at ORD: 138 minutes.
    • AA6282: ORD 2026-12-14 15:17:00 → MKE 2026-12-14 16:24:00.

2026-12-13 → 2026-12-14 · $350.00

  • Delta Air Lines DL3848 / DL2822: MKE 2026-12-13 13:12:00 → STL 2026-12-13 17:20:00; 1 stop(s) via DTW; 248 minutes. Local airport times.
    • DL3848: MKE 2026-12-13 13:12:00 → DTW 2026-12-13 15:24:00; layover at DTW: 69 minutes.
    • DL2822: DTW 2026-12-13 16:33:00 → STL 2026-12-13 17:20:00.
  • Delta Air Lines DL1371 / DL3724: STL 2026-12-14 14:17:00 → MKE 2026-12-14 20:05:00; 1 stop(s) via DTW; 348 minutes. Local airport times.
    • DL1371: STL 2026-12-14 14:17:00 → DTW 2026-12-14 16:53:00; layover at DTW: 174 minutes.
    • DL3724: DTW 2026-12-14 19:47:00 → MKE 2026-12-14 20:05:00.

2026-12-13 → 2026-12-14 · $260.00

  • Southwest Airlines WN3113: MKE 2026-12-13 15:40:00 → STL 2026-12-13 17:00:00; nonstop; 80 minutes. Local airport times.
  • Southwest Airlines WN4919: STL 2026-12-14 21:50:00 → MKE 2026-12-14 23:10:00; nonstop; 80 minutes. Local airport times.

2026-12-13 → 2026-12-14 · $275.00

  • Southwest Airlines WN4802 / WN1089: MKE 2026-12-13 06:20:00 → STL 2026-12-13 11:00:00; 1 stop(s) via MDW; 280 minutes. Local airport times.
    • WN4802: MKE 2026-12-13 06:20:00 → MDW 2026-12-13 07:20:00; layover at MDW: 140 minutes.
    • WN1089: MDW 2026-12-13 09:40:00 → STL 2026-12-13 11:00:00.
  • Southwest Airlines WN4919: STL 2026-12-14 21:50:00 → MKE 2026-12-14 23:10:00; nonstop; 80 minutes. Local airport times.

2026-12-13 → 2026-12-14 · $275.00

  • Southwest Airlines WN1086 / WN2714: MKE 2026-12-13 09:45:00 → STL 2026-12-13 15:25:00; 1 stop(s) via MCI; 340 minutes. Local airport times.
    • WN1086: MKE 2026-12-13 09:45:00 → MCI 2026-12-13 11:20:00; layover at MCI: 180 minutes.
    • WN2714: MCI 2026-12-13 14:20:00 → STL 2026-12-13 15:25:00.
  • Southwest Airlines WN4919: STL 2026-12-14 21:50:00 → MKE 2026-12-14 23:10:00; nonstop; 80 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Milwaukee (MKE) to Saint Louis (STL) · Dec 13, 2026 · return Dec 14, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match this page, share this page's complete link unchanged: Milwaukee (MKE) to Saint Louis (STL), Dec 13, 2026 · return Dec 14, 2026. Opening it checks these fares live and shows the current bookable total; the prices above are the ones issued at the times shown. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Milwaukee to Saint Louis (STL) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.