Cheap Flights from Dayton International to St Louis

Compare Dayton International to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Find the cheapest month to fly from Dayton International to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dayton International to St Louis flights are currently cheapest in April.

Dayton International to St Louis: Alternative routes

Compare routes from Dayton International to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Dayton to St Louis: Flight information

The things to know before you go.
Cheapest flight found$414
Cheapest month to flyApril

Finding cheap flights from Dayton International to St Louis: Frequently asked questions

The best price we found for a return flight from Dayton International to St Louis is $414. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Dayton International to St Louis. But we found flights with one or more stops from $414.
As of March 2026, there are no flights flying from Dayton International to St Louis.
The cheapest month to fly from Dayton International to St Louis is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dayton International Airport to St Louis Airport on Friday, 24 April 2026.
No airlines currently offer direct flights between Dayton International Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to St Louis.

Travelling from James M. Cox Dayton International Airport (DAY) to Lambert-St. Louis International Airport (STL): what you need to know

  • St Louis's timezone is UTC-5, making St Louis one hour behind Dayton.

  • Your DAY to STL flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • Flying during a peak time like April? Public holidays and other popular seasons can lead to longer lines and delays at airport checkpoints. Be extra cautious and arrive up to four hours before international flights and two hours before a domestic departure.

  • Think about adding a stopover when booking your ticket from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here's where you can stop between DAY and STL:

    • O'Hare International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from James M. Cox Dayton International Airport (DAY) to Lambert-St. Louis International Airport (STL)

  • Currently, $296 is the lowest price we've found for a one-way James M. Cox Dayton International Airport to Lambert-St. Louis International Airport flight. The best price for a return plane ticket is $414. Bear in mind that fares could change due to demand at the time of booking.

  • Don't leave things to the last minute. You're more likely to get cheap tickets from DAY to STL if you book early. Airlines often have some great early bird discounts.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll give you the cheapest price across the month when looking for a flight from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport.

  • Landing cheap flights from DAY to STL is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as there's a better deal.

  • Select your preferred arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport.

Handy information about James M. Cox Dayton International Airport (DAY)

  • You'll find DAY at Terminal Building.

  • Of the flights that depart from James M. Cox Dayton International Airport, 77.52% land on time at their destination.

  • James M. Cox Dayton International Airport is around 21 kilometres from central Dayton. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • Expect a trip time of around 1 hour 15 minutes on public transport.

  • Want a place to stay before your flight from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport? Check out Motel 6-Dayton, OH - Englewood. Enjoy a good night's sleep here before making your way to DAY.

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • STL is located at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to reach the centre driving.

  • It'll take around 35 minutes to get there by public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Choose the best time to visit St Louis based on whether you prefer a more fast-paced or easygoing experience.

  • When booking your flight from James M. Cox Dayton International Airport to Lambert-St. Louis International Airport, consider the kind of weather you like. July is the warmest month in St Louis, with temperatures ranging from 17ºC to 33ºC.

  • If you want cooler conditions, look for a cheap ticket from DAY to STL in January. Temperatures average between -8ºC and 7ºC then.

Explore more of United States

  • St Louis is easy to fall in love with, but there are so many other parts of United States just waiting to be explored. About 418 kilometres north-east of St Louis, a visit to Chicago will keep your itinerary busy. Start with leading attractions like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another essential stop in United States and is around 370 kilometres east of St Louis. No journey is complete without visiting The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.