Question 1

How much does a flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?

Accepted Answer

One-way flights typically cost between £417 and £924 and return flights often range between £417 and £924. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.

Question 2

What is the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

October is typically the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), with average return fares of approximately £321. This is about 24% lower than the average price throughout the year. October often sees lower prices as the summer travel rush has ended and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) include April and August.

Question 3

Which airlines fly direct from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

Enter ORD to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

Question 4

How do I find cheap flights from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

To find a cheap flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

Question 5

What is the best airline to fly with from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

The best airline to fly with from Chicago, IL (ORD-O'Hare Intl.) (ORD) to St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) will differ from traveller to traveller. If you like to fly early, AA offers early morning flights. If price is the most important factor, AA typically offers the lowest fares. AA offers the most daily flights from Chicago, IL (ORD-O'Hare Intl.) (ORD) to St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

Question 6

What is the best time to fly from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

When looking for the best time to fly from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL), you'll find that October and April are typically the cheapest months, with average return flights around £321. While September and June are the most popular months for travel, offering plenty of flight options, they might be a bit pricier. If you're looking to balance good value with a decent selection of flights, consider booking during the shoulder seasons around these months.

Question 7

How many flights per day from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

There are approximately 22 nonstop flights per day from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). For even more choice, look at flights that include layovers. You'll find around 76 connecting flights per day. Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW), and LaGuardia (LGA).

Question 8

What is the earliest flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

The earliest flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in February and March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

Question 9

What day of the week has the most flights from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

You'll typically find the most flights from Chicago, IL (ORD-O'Hare Intl.) (ORD) to St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) on a Thursday, with around 53 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta Air Lines, and United Airlines. Flight schedules are consistent throughout the week.

Question 10

What are the most popular departure times for flights from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

The most popular departure times for flights from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL) are in the early morning, from 6am to 9am. Approximately 23% of passengers prefer this time window. Many major carriers, including Delta Air Lines and American Airlines, offer flights during this window. This timing works well for travelers who want to get an early start to their day in St. Louis.

Question 11

How long does it take to fly from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

Flying nonstop from ORD to STL takes around 1 hour 30 minutes, with the route covering approximately 258 miles. Flights with a layover typically take 4 hours 50 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Question 12

Can you fly business or first class from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

Select the "Business class" and "First class" filters when looking for ORD to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

Question 13

How do I earn miles on a Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?

Accepted Answer

It's easy to earn miles on a Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

Question 14

What airports do you fly into for St. Louis from O'Hare Intl. (ORD)?

Accepted Answer

From O'Hare Intl. (ORD), you can fly directly into Lambert-St. Louis Intl. (STL) to reach St. Louis. Some flights may connect through major hubs like Love Field (DAL), McCarran Intl. (LAS), Denver Intl. (DEN) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Question 15

Is it cheaper to buy a plane ticket from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?

Accepted Answer

Typically, booking a last minute flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Question 16

Is it cheaper to book a Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?

Accepted Answer

Securing a Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Question 17

Can I cancel or change the date of my flight from Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?

Accepted Answer

If you booked your Chicago, IL (ORD-O'Hare Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Origin airport	O'Hare Intl.
Destination airport	Lambert-St. Louis Intl.
Airlines serving	Alaska Airlines, American Airlines, Delta, United
Return price	£116
Distance	413 km
Average flight time	1 hour 23 mins

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£78 Cheap Flights from Chicago (ORD) to St. Louis (STL)