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Cheap flights from St. Louis to Decatur from $172

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 Decatur departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Decatur

Cheap round-trip flights

United Airlines Logo
5:00 am - 8:48 amSTL-DEC
3h 48m1 stop
United Airlines Logo
6:55 pm - 10:45 pmDEC-STL
3h 50m1 stop
$350United Airlines
Find Deal
Thu, Jun 26 - Mon, Jun 30

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How to get the cheapest flight ticket from St. Louis to Decatur, 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 from Lambert-St Louis to Decatur Arpt?

United Airlines is the most popular carrier operating from Lambert-St Louis to Decatur Arpt

When to book flights from St. Louis to Decatur, Illinois

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Decatur, Illinois according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Decatur, Illinois (STL to DEC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Decatur, Illinois

Best Price Found

$172

Fastest flight time

3h 48m

Direct flights

None

Airports in Decatur, Illinois

1 airport
The best one-way flight to Decatur, Illinois from St. Louis in the past 72 hours is $172. The best round-trip flight deal from St. Louis to Decatur, Illinois found on momondo in the last 72 hours is $350.
The fastest flight from St. Louis to Decatur, Illinois takes 3h 48m
There are no direct flights from St. Louis to Decatur, Illinois. Popular non-direct route for this connection is Lambert-St Louis Airport - Decatur Arpt Airport.
There is 1 airport near Decatur, Illinois: Decatur Arpt (DEC)

  • How far is Lambert-St Louis to Decatur Arpt by plane?

    The straight-line distance from Lambert-St Louis to Decatur Arpt is 106.9 mi. In terms of flight time, this usually takes a little over 3h 48m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Decatur Arpt Airport?

    Prices for flights from Lambert-St Louis Airport to Decatur Arpt Airport were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to Decatur Arpt Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Decatur Arpt Airport.

  • What documentation or ID do you need to fly to Decatur Arpt Airport?

    The necessary travel and health documents for your Decatur Arpt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Effingham
Mattoon
Forsyth

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Decatur?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Decatur from St. Louis.

Can I find flights from St. Louis to Decatur with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Decatur from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Decatur?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Decatur.

I’m not ready to book a flight from St. Louis to Decatur right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Decatur, momondo offers a useful price alert feature which will track prices for flights to Decatur from St. Louis and alert you when they change.


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