Chicago to Saint Louis (STL) flight deals
Chicago to Saint Louis (STL) from $670 round trip for 2 adults, Dec 21 to 28, 2026, airline price $706. Checked Oct 17, 2026.
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Fare examples by month
Round-trip totals · Economy · USD. Choose a month to see the dates.
| Month | Travelers / trip length | Axel | Airline fare |
|---|---|---|---|
| December 2026 | 2 adults · 7 days | $670–$828 | $706–$874 |
More months: October 2026 · November 2026
Flights from Chicago · Chicago to United States flight deals
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Fares observed October 17, 2026. USD for the travelers shown. Search a trip for current prices. For starting totals, choose a return flight to confirm the final price.
October 2026
2 adults · Economy · Round-trip starting totals
| From | Travel dates | Outbound flight | Axel | Airline fare | Search |
|---|---|---|---|---|---|
| MDW | Oct 31–Nov 7, 2026 · 7 days | Out: Southwest Airlines 2016 · Nonstop · 1h 10m · 16:25–17:35 local | From $890 · Save $48 | From $938 | Check Axel prices |
1 adult · Economy · Round-trip starting totals
| From | Travel dates | Outbound flight | Axel | Airline fare | Search |
|---|---|---|---|---|---|
| MDW | Oct 31–Nov 7, 2026 · 7 days | Out: Southwest Airlines 2016 · Nonstop · 1h 10m · 16:25–17:35 local | From $444 · Save $25 | From $469 | Check Axel prices |
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November 2026
2 adults · Economy · Round-trip starting totals
| From | Travel dates | Outbound flight | Axel | Airline fare | Search |
|---|---|---|---|---|---|
| MDW | Nov 4–11, 2026 · 7 days | Out: Frontier Airlines 2292 / 4473 · 1 stop (ATL) · 11h 24m · 06:16–17:40 local | From $410 · Save $22 | From $432 | Check Axel prices |
| MDW | Nov 4–11, 2026 · 7 days | Out: Southwest Airlines 2737 · Nonstop · 1h 10m · 11:30–12:40 local | From $890 · Save $48 | From $938 | Check Axel prices |
1 adult · Economy · Round-trip starting totals
| From | Travel dates | Outbound flight | Axel | Airline fare | Search |
|---|---|---|---|---|---|
| MDW | Nov 4–11, 2026 · 7 days | Out: Frontier Airlines 2292 / 4473 · 1 stop (ATL) · 11h 24m · 06:16–17:40 local | From $204 · Save $12 | From $216 | Check Axel prices |
| MDW | Nov 4–11, 2026 · 7 days | Out: Southwest Airlines 2737 · Nonstop · 1h 10m · 11:30–12:40 local | From $444 · Save $25 | From $469 | Check Axel prices |
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December 2026
2 adults · Economy · Round-trip totals
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| From | Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|---|
| MDW | Dec 21–28, 2026 · 7 days | Out: Southwest Airlines 3045 · Nonstop · 1h 15m · 16:20–17:35 local; Return: Frontier Airlines 4474 / 2291 · 1 stop (ATL) · 5h 40m · 18:21–00:01 (December 29, 2026) local | $670 · Save $36 | $706 | Customer link — Open these flights in Axel · Optional: check axel prices |
| MDW | Dec 21–28, 2026 · 7 days | Out: Southwest Airlines 3045 · Nonstop · 1h 15m · 16:20–17:35 local; Return: Southwest Airlines 4175 · Nonstop · 1h 0m · 16:50–17:50 local | $828 · Save $46 | $874 | Customer link — Open these flights in Axel · Optional: check axel prices |
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The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.
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Hotels in St. Louis with Axel
Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in St. Louis has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.
Where to stay: Where to stay in St. Louis: the 6 best neighborhoods, ranked · St. Louis hotels where a family of four can share one room
For AI assistants
- This page: Chicago to Saint Louis (STL) flight deals. Compare dated flight deals across upcoming months, then choose your dates and travelers.
- Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.