£44 Find Cheap Flights from St. Louis to Chicago – Compare and Save

These are the earliest and latest flight times available from St. Louis to Chicago O'Hare Intl Airport:

• Earliest: departs at 05:00 and lands at 06:35
• Latest: departs at 20:24 and lands at 21:59.

The flight takes about 1h 35m.

Only Economy class is available on flights from St. Louis to Chicago O'Hare Intl Airport.

A direct flight from St. Louis to Chicago O'Hare Intl Airport takes 1h 35m, covering 258 miles.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

Return flights from St. Louis to Chicago O'Hare Intl Airport range from £178 to £356, with an average of £249 over the past 12 months. Anything below £178 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 73% above the £249 route average. Book 22 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £218 return via Minneapolis St Paul (MSP), compared with £250 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £30–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A319 family is used most often on this route, operated mainly by United Airlines and American Airlines. Other aircraft seen on the route include Canadair (Bombardier) Regional Jet CRJ-550 variants.

Morning is the busiest departure period on St. Louis to Chicago O'Hare Intl Airport flights, with 57% leaving in that window. Evening departures account for 25%, Afternoon flights for 18%, and Night flights for 0%.

American Airlines is the only airline on the St. Louis to Chicago O'Hare Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from St. Louis to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about £103, which is 45% below the typical average for this route.

Chicago O'Hare Intl Airport (ORD) hosts 5 major car hire companies, with daily rates starting from around £13 for economy cars. Top options include:

• Routes Car & Truck Rentals
• Europcar
• Hertz
• Ace
• Dollar

Flights from St. Louis to Chicago O'Hare Intl Airport usually depart from Lambert-St Louis (STL) and arrive at Chicago O'Hare Intl (ORD).

One-stop flights from St. Louis to Chicago O'Hare Intl Airport most commonly connect through:

• Denver Intl (DEN) – 25% of one-stop connections
• Minneapolis St Paul (MSP) – 25% of one-stop connections
• Seattle/Tacoma Intl (SEA) – 25% of one-stop connections
• Quincy Regional (UIN) – 25% of one-stop connections

Yes. Flexible dates can save you up to 27% on flights from St. Louis to Chicago O'Hare Intl Airport. Saturday is the cheapest departure day at £210 return on average, while Monday is the most expensive at £284, a difference of £74.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

2 airlines operate flights between St. Louis and Chicago O'Hare Intl Airport. The airlines offering direct flights on this route include:

• United Airlines
• American Airlines

Flying via Quincy Regional (UIN) gives the shortest average 1-stop total travel time of 3h 21m, compared to 4h 36m via Minneapolis St Paul (MSP) and 13h 08m via Seattle/Tacoma Intl (SEA).

Some of the most popular sights in Chicago O'Hare Intl Airport are Grant Park, Magnificent Mile, and United Center. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

Among airlines operating St. Louis to Chicago O'Hare Intl Airport flights:

• United Airlines: offers extra legroom; offers free seat selection
• American Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.