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STL - DEC

$420 Find cheap flights from St. Louis to Decatur, Illinois

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Decatur departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 6/4
Tue 6/11

Search hundreds of travel sites at once for deals on flights to Decatur

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Decatur, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Decatur, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Decatur (STL-DEC)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Decatur that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:10 am - 4:24 pmSTL-DEC
5h 14m1 stop
5:15 pm - 2:23 pmDEC-STL
21h 08m1 stop
$420United Airlines
Find Deal
Thu, May 16 - Mon, May 20
6:00 am - 5:57 pmSTL-DEC
11h 57m1 stop
9:12 am - 2:23 pmDEC-STL
5h 11m1 stop
$535United Airlines
Find Deal
Sat, May 18 - Sun, May 19
5:25 pm - 4:24 pmSTL-DEC
22h 59m1 stop
5:15 pm - 2:23 pmDEC-STL
21h 08m1 stop
$547United Airlines
Find Deal
Sat, May 18 - Mon, May 20
11:10 am - 4:24 pmSTL-DEC
5h 14m1 stop
9:12 am - 10:17 amDEC-STL
25h 05m1 stop
$592United Airlines
Find Deal
Thu, May 16 - Sat, May 18
5:25 pm - 5:57 pmSTL-DEC
24h 32m1 stop
9:12 am - 2:23 pmDEC-STL
5h 11m1 stop
$595United Airlines
Find Deal
Fri, May 17 - Sun, May 19
11:10 am - 4:24 pmSTL-DEC
5h 14m1 stop
5:15 pm - 10:14 amDEC-STL
16h 59m1 stop
$605United Airlines
Find Deal
Fri, May 17 - Mon, May 20

Good to know

Cheapest flight

$420
Flight from St. Louis to Decatur

When to book flights from St. Louis to Decatur

Are your dates flexible? Find out the best times to travel from St. Louis to Decatur based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Decatur

  • What is the cheapest flight from St. Louis to Decatur, Illinois?

    In the last 3 days, the lowest price for a flight from St. Louis to Decatur, Illinois was $420 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Decatur?

    A passport is not required to fly from St. Louis to Decatur.

  • Which aircraft models fly most regularly from St. Louis to Decatur?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Decatur?

    Star Alliance is the only airline alliance operating flights between St. Louis and Decatur.

  • How does KAYAK find such low prices on flights from St. Louis to Decatur?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Decatur.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Decatur?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Decatur from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Decatur?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Decatur with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and DEC can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Decatur?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Decatur from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

St. Louis - Decatur Flights

Departure:

St. Louis (STL)United States

Destination:

Decatur (DEC)United States

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