Cheap flights from St. Louis to Illinois from $45
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Illinois departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? Create a price alert to track prices.Easily compare round-trip flights from St. Louis to Illinois
Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Illinois by changing tabs
Find the cheapest one-way flights from St. Louis to Illinois
If you're looking for one-way flights from St. Louis to Illinois, view some of our deals below provided by American Airlines, Southern / Mokulele and Spirit Airlines
Search last-minute flights to Illinois from St. Louis
Find and compare round-trip flight prices for your last-minute flight from St. Louis to Illinois
Best airlines flying from St. Louis to Illinois
Compare and see reviews for airlines that fly from St. Louis to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $107 | Free Cancellation | Rating 8.1 25 reviews | |||
| PriceFrom $128 | Free Cancellation | Rating 7.3 14,834 reviews | |||
| PriceFrom $132 | Free Cancellation | Rating 7.4 11,202 reviews | |||
| PriceFrom $238 | Free Cancellation | Rating 8.0 10,913 reviews |
Delta flights from St. Louis to Illinois
Our best Delta deals on St. Louis to Illinois flight tickets
United Airlines flights from St. Louis to Illinois
Our best United Airlines deals on St. Louis to Illinois flight tickets
How to get the cheapest flight ticket from St. Louis to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest airline that flies to Illinois from St. Louis?
Southern / Mokulele. American Airlines, Delta, and Southern / Mokulele are the most popular carriers operating from St. Louis to Illinois
What is the cheapest St. Louis to Illinois flight route?
Lambert-St Louis - Quincy Regional. Fly from Lambert-St Louis to Quincy Regional for the best St. Louis - Illinois flight prices
What cabin class options are available on St. Louis to Illinois flights?
There are 3 cabin classes available to choose from on St. Louis to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on St. Louis to Illinois flights?
No. A direct flight is the cheapest option for a flight between St. Louis to Illinois.
Cheap St. Louis to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Illinois
Best Price Found | $45 |
|---|---|
Fastest flight time | 0h 50m |
Direct flights | Every day |
Airports in Illinois | 3 airports |
When did momondo last update prices for flights from Lambert-St Louis Airport to Illinois?
Prices for flights from Lambert-St Louis Airport to Illinois refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Illinois?
There are 5 operators available for flights from Lambert-St Louis Airport to Illinois as of April 2024.
How old do you have to be to fly from Lambert-St Louis Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to Illinois with flexible booking policies on momondo?
Flights from St. Louis to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to Illinois?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from St. Louis.
I’m not ready to book a flight from St. Louis to Illinois right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.