Cheap Flights from Chicago to St Louis
ORD to STL · 258 mi
Chicago to St Louis flight insights
Cheapest cached price
$173
Checking live fares…
Prices shown may not be current. Last checked: Aug 29, 2026.
Planning a trip from Chicago to St Louis? The lowest fare we recorded on this route recently was $173 (last checked Aug 29, 2026); today's live fare for your dates can differ.
Chicago to St Louis at a glance
Route Quick Facts
| Origin | Chicago (ORD) |
|---|---|
| Destination | St Louis (STL) |
| Current Lowest Fare | $173 |
| Fares Last Checked | Aug 29, 2026 |
| Distance | 258 miles (ORD to STL) |
| Time in St Louis | Same time as Chicago |
Local time in St Louis is the same as in Chicago. Chicago is on Central Time, St Louis on Central Time.
Flight deals from Chicago to St Louis
Compare flight deals from Chicago to St Louis. We search our partner travel sites to find you a good price. Fares on this route are refreshed from our partner network, and you book directly with the provider. EAZAIR never adds a fee.
Airports for Chicago to St Louis flights
Departure · Chicago
O'Hare International (ORD)
Central Time
Other airports near Chicago: Chicago Midway International (MDW)
Arrival · St Louis
St. Louis Lambert International (STL)
Central Time
Airline bag fees
Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.
| Airline | Carry-on, basic economy | 1st checked bag | 2nd checked bag | Source |
|---|---|---|---|---|
| American Airlines | Included | $45 | $55 | aa.com, Sep 24, 2026 |
| United Airlines | Not included | $40 | $50 | united.com, Sep 24, 2026 |
| Delta Air Lines | Included | $45 | $55 | delta.com, Sep 24, 2026 |
| Southwest Airlines | Included | $45 | $55 | southwest.com, Oct 27, 2026 |
| JetBlue | Included | $45 | $59 | jetblue.com, Sep 24, 2026 |
| Alaska Airlines | Included | $45 | $55 | alaskaair.com, Sep 24, 2026 |
| Frontier Airlines | Not included | Varies | Varies | flyfrontier.com, Sep 24, 2026 |
| Sun Country Airlines | Not included | Varies | Varies | suncountry.com, Sep 24, 2026 |
Domestic US fees per bag, each way, when paid online in advance. "Varies" means the airline prices bags by route and date.
Travel tips
Arrive early for domestic flights
TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.
Pack a mixed carry-on
Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.
Screenshot your confirmation
Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.
Check in online when it opens
Most airlines open online check-in 24 hours before departure. Checking in early can help with seat selection and, on some airlines, boarding group assignment.
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