352 € Cheap Flights from Westchester County to St Louis

Compare Westchester County to St Louis flight deals

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Flight deals from Westchester County Airport to St Louis Airport

Looking for a cheap last-minute deal or the best return flight from Westchester County to St Louis? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Westchester County to St Louis

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

Westchester County to St Louis: Alternative routes

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

White Plains to St Louis: Flight information

The things to know before you go.
Cheapest flight found167 €
Cheapest month to flyMay

Finding cheap flights from Westchester County to St Louis: Frequently asked questions

The best price we found for a return flight from Westchester County to St Louis is 352 €. 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 Westchester County to St Louis. But we found flights with one or more stops from 352 €.
As of April 2026, there are no flights flying from Westchester County to St Louis.
The cheapest month to fly from Westchester County to St Louis is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Westchester County Airport to St Louis Airport on Tuesday, 7 April 2026.
No airlines currently offer direct flights between Westchester County 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, Delta offers the cheapest flight tickets to St Louis.

Flying from Westchester County Airport (HPN) to Lambert-St. Louis International Airport (STL): what you need to know

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you'll have plenty of time to board your HPN to STL flight.

  • Travelling during a peak time like August? Public holidays and other popular seasons can lead to longer queues and delays at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • If you'd like to explore another city along the way, just uncheck 'Direct flights only' when searching for your ticket from Westchester County Airport to Lambert-St. Louis International Airport. These are the most popular stopovers between HPN and STL:

    • Detroit Metropolitan Wayne County Airport

    • Ronald Reagan National Airport

    • Charlotte Douglas International Airport

How to find the cheapest flights from Westchester County Airport (HPN) to Lambert-St. Louis International Airport (STL)

  • Currently, 167 € is the lowest price we've seen for a one-way Westchester County Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is 352 €. Bear in mind that fares could change due to availability when booking.

  • Don't leave things to the last minute. You're more likely to get cheap tickets from HPN to STL if you book in advance. Airlines often have some fantastic early bird deals.

  • If you're willing to be flexible with your trip dates, try using the 'Whole month' search function. It'll show you the lowest price in every month when searching for your flight from Westchester County Airport to Lambert-St. Louis International Airport.

  • Spend less time searching for cheap flights from HPN to STL by setting up a Price Alert. You'll receive an email or notification through the app when a lower fare pops up.

  • Lock in the ideal flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Westchester County Airport to Lambert-St. Louis International Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Westchester County Airport (HPN)

  • HPN is located at 240 Airport Road, Suite 202.

  • 74.52% of flights that take off from Westchester County Airport reach their destination on time.

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 by car.

  • If you're taking public transport, expect a journey of around 35 minutes.

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

  • July is the most popular month for flights from Westchester County Airport to Lambert-St. Louis International Airport. To steer clear of the crowds, go to St Louis in April.

  • The warmest month in St Louis is July, with the temperature ranging between 17ºC (63ºF) and 33ºC (91ºF). Lock in your flights from Westchester County Airport to Lambert-St. Louis International Airport in this month if you like this kind of weather.

  • If you like cooler conditions, search for a cheap ticket from HPN to STL in January. Average temperatures are between -8ºC (18ºF) and 7ºC (45ºF) then.

Explore more of United States

  • Chicago is just one of the many cities in United States waiting to be explored once you've seen St Louis. Around 418 kilometres away to the north-east, its best attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Around 370 kilometres east of St Louis, Indianapolis is another essential stop in United States. No visit is complete without checking out 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.