Cheap Flights from Saint Louis to Illinois

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Average price per month


  • Low Season: January
  • High Season: June
  • Prices for this route are volatile and fluctuate from month to month.
  • The cheapest flights are usually bought in January, September and December.
  • High season months are April, May and June. However, it's not the rule and you should always search current flight deals.
  • For example, the flight from Saint Louis to Illinois is currently 29% cheaper than average.

Price increase as travel date approaches


  • Flight prices for this route increase by 49% if you book last minute. Hover on the graph above to see for yourself!.
  • To grab the lowest price possible, you should buy your flight around 34 days before departure!
  • Consider booking at least 15 days before departure to increase your chances of getting a low price.
  • Generally, it's safe to book between 90 and 60 days in advance.

Saint Louis to Illinois Flight Information

Flights Depart FromSaint Louis (STL)
Flights Arriving ToIllinois (ORD)
Distance415.75 km
Current Discount29 %
Average Price $284
Good Deal $215
Cheapest AirlinesAmerican Airlines, United Airlines
Popular AirlinesAmerican Airlines, United Airlines
Flight Duration00 hours 55 minutes
Flights Depart From
Saint Louis (STL)
Flights Arrive In
Illinois (ORD)
Distance
415.75 km
Flight Duration
00 hours 55 minutes
Current Discount
29 %
Average Price
$284
Good Deal
$215
Cheapest Airlines
American Airlines, United Airlines
Popular Airlines
American Airlines, United Airlines

Most Reliable Airlines flying to Illinois

Airline Overall Rating On time arrival Check-in & Boarding Cleanliness Customer Service Food & Beverage Entertainment Legroom Seat Comfort
American Airlines American Airlines 3.3 4.0 3.5 3.5 3.5 3.0 3.0 3.5 3.0
United Airlines United Airlines 3.3 4.0 3.5 3.5 3.5 3.0 3.0 3.0 3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.5
Seat Comfort
3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.0
Seat Comfort
3.0

Good to know:


Enter your preferred departure airport and travel dates into the search form above to unlock the latest Illinois flight deals.

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How to get the cheapest flight to Illinois?

Currently there is a 29% discount on flights to Illinois. This price won't stay too long and you should consider buying now.

Search and compare flight options now!.

Awesome Deals

notifications_active In the past few days the following airlines offered the lowest prices from Saint Louis to Illinois: American Airlines and United Airlines..

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Frequently Asked Questions

  • Which airlines offer cheap airfare from Saint Louis to Illinois?That may change at any time. But in the past 14 days, the cheapest tickets we've found were with American Airlines and United Airlines.
  • Which airlines fly from Saint Louis to Illinois most often?American Airlines and United Airlines are the top.
  • Which airport will I be flying from in Saint Louis?When departing from Saint Louis you'll be flying out of Lambert-St. Louis International.
  • Which airport will I be flying from in Illinois?When departing from Illinois you'll be flying out of Chicago O'hare International.
  • How is Justfly.com so good at finding cheap flights?We've taken an oath of secrecy and vowed never to say. Just kidding. Our team and technology allows us to browse through hundreds of airlines and hundreds of thousands of flights to find the lowest prices. Then we pass the savings on to you.
  • Can Justfly.com help me save money in any other way?We're glad you asked. We help you save money with our Fare Alerts, Price Trend charts and multi-ticket bookings. We also help you save on hotels and car rentals.
  • How many airlines does Justfly.com search to find affordable flights?We typically search over 400 airlines.
  • Can Justfly.com's Price Trend tool really tell me the best time to buy tickets?Absolutely! That's why we've made it accessible to you.
  • Will the price of my flight change?Flight prices and availability change often. To counter this, we update the important data as often as possible every step of the way.
  • How will I receive my booking confirmation and travel information?We'll send you an email with the important details!
  • Can you cancel or change Justfly.com flights?You sure can. But give us a call first. We'll do our best to find a solution. However, in some cases, if we cancel your booking, we'll have to charge an administrative fee of $75 (domestic), $125 (trans-border between Canada and USA) and $200 (international).
  • Are Justfly.com's tickets refundable?All bookings are currently non-refundable.
  • How do I contact Justfly.com?To find answers to all of your questions, click here to visit our support page.