Cheap Flights from St Louis (STL) to Lexington (LEX)

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      Travellers and cabin class, 1 Adult, Economy

      Compare St Louis to Lexington Blue Grass flight deals

      Find the cheapest month or even day of the year to fly to Lexington Blue Grass

      Book the best Lexington Blue Grass fare with no extra fees

      Flight deals from St Louis to Lexington Blue Grass

      Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Lexington Blue Grass Airport? If you want to travel next month, return fares start from $409. Find the lowest prices on one-way and return tickets right here.

      Find the cheapest month to fly from St Louis to Lexington Blue Grass

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

      St Louis to Lexington Blue Grass: Alternative routes

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

      St Louis to Lexington: Flight information

      The things to know before you go.
      Cheapest flight found$409
      Cheapest month to flySeptember

      Finding cheap flights from St Louis to Lexington Blue Grass: Frequently asked questions

      The best price we found for a return flight from St Louis to Lexington Blue Grass is $409. 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 St Louis to Lexington Blue Grass. But we found flights with one or more stops from $409.
      As of August 2026, there are no flights flying from St Louis to Lexington Blue Grass.
      The cheapest month to fly from St Louis to Lexington Blue Grass is usually September.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Lexington Blue Grass Airport on Tuesday, 8 September 2026.
      No airlines currently offer direct flights between St Louis Airport and Lexington Blue Grass 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 Lexington Blue Grass 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 Lexington is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, United offers the cheapest flight tickets to Lexington Blue Grass.

      Travelling from St Louis Airport (STL) to Lexington Blue Grass Airport (LEX): what you need to know

      • To ensure you catch your STL to LEX flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours ahead of international departures and an hour before domestic flights is the standard rule.

      • You'll likely experience bigger queues during popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a smart move.

      • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from St Louis Airport to Lexington Blue Grass Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to tour the city of your choice. Top stopovers between STL and LEX include:

        • Chicago O'Hare International Airport

        • Atlanta Hartsfield-Jackson Airport

        • Detroit Wayne County Airport

      How to find the cheapest flights from St Louis Airport (STL) to Lexington Blue Grass Airport (LEX)

      • Currently, $198 is the cheapest price we've seen for a one-way St Louis Airport to Lexington Blue Grass Airport flight. The best price for a return plane ticket is $409. Remember that fares can change due to demand at the time of booking.

      • It's a good idea to book as early as possible if you're looking for cheap tickets from STL to LEX. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

      • Finding cheap flights from St Louis Airport to Lexington Blue Grass Airport is easy if you're flexible with your dates. Use the 'Whole month' search function to see the best prices across every month and bag a great deal.

      • Save time searching for cheap flights from STL to LEX by setting up a Price Alert. You'll receive an email or push notification on the app when fares go down.

      • Lock in the ideal flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from St Louis Airport to Lexington Blue Grass Airport, use the 'Sort by' function. You can also filter results by arrival and departure times, airline, and journey duration.

      Handy information about St Louis Airport (STL)

      Arriving at Lexington Blue Grass Airport (LEX)

      When to fly to Lexington Blue Grass Airport (LEX)

      • Carefully consider your dates before securing your flight from St Louis Airport to Lexington Blue Grass Airport. Lexington in peak season has a buzzing atmosphere, but hotel prices are generally higher and major attractions can be busy. Visit in the off-season if you prefer a slower, more relaxed pace.

      • When reserving your flight from St Louis Airport to Lexington Blue Grass Airport, consider the type of weather you like. July is the warmest month in Lexington, with the temperature ranging from 17ºC (63ºF) to 32ºC (90ºF).

      • For cooler conditions, look for a cheap ticket from STL to LEX in January. Temperatures average between -8ºC (18ºF) and 8ºC (46ºF) then.

      Explore more of the United States

      • Columbus is just one of the many cities in the United States waiting to be discovered after you've seen Lexington. Around 257 kilometres away to the north-east, well-known attractions include Franklin Park Conservatory and Botanical Gardens, Whetstone Park / Park of Roses and Ohio Theatre.

      • If you're eager to discover another well-known destination in the United States, consider Indianapolis, about 241 kilometres north-west of Lexington. Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis are key reasons to visit.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.