Flying from Ontario International Airport (ONT) to Lambert-St. Louis International Airport (STL): what you need to know
The timezone in St Louis is UTC-5, which is two hours ahead of Ontario.
For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This way, you can comfortably board your ONT to STL flight.
During popular months like August, it's a good idea to get to the airport earlier. Plan to arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're travelling during a peak period in general.
Consider adding a stopover when booking your ticket from Ontario International Airport to Lambert-St. Louis International Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps explore a new destination along the way. Here's where you can stop between ONT and STL:
Phoenix Sky Harbour International Airport
Denver International Airport
Harry Reid Airport (formerly McCarran Airport)
How to find the cheapest flights from Ontario International Airport (ONT) to Lambert-St. Louis International Airport (STL)
₹ 7,713 is the lowest price for a one-way Ontario International Airport to Lambert-St. Louis International Airport flight. A return flight starts from ₹ 21,452. These fares can change depending on availability and demand.
To score cheap tickets from ONT to STL, book early. Airlines generally offer lower prices when flights are first released.
The 'Whole month' tool shows you the cheapest flights from Ontario International Airport to Lambert-St. Louis International Airport throughout the entire month. It's an easy way to find a bargain if your travel dates are flexible.
You don't need to check back in every day to find out if fares have gone down when you set up a Price Alert. We'll notify you the moment there's a change in price on cheap flights from ONT to STL.
Tailor your trip using filters. Select your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Ontario International Airport to Lambert-St. Louis International Airport.
Handy information about Ontario International Airport (ONT)
ONT is located at 2900 E. Airport Drive.
Ontario International Airport gets high marks for on-time performance. 83.6% of flights that depart ONT reach their destination on time.
Ontario International Airport is around 6 kilometres from central Ontario. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 10 minutes or so to get there, depending on the traffic.
Expect a journey time of about 1 hour 30 minutes when using public transport.
Need a convenient hotel near ONT? If you're catching an early flight from Ontario International Airport to Lambert-St. Louis International Airport, these stays will put you moments from your departure gate:
Arriving at Lambert-St. Louis International Airport (STL)
If you're arriving on a late Ontario International Airport to Lambert-St. Louis International Airport flight, nothing tops the convenience of being close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these options near STL:
Travel at your own pace with a Lambert-St. Louis International Airport rental car. Pick up a set of wheels from Hertz, Budget or Alamo and experience more of St Louis and beyond.
Booking your ride from Lambert-St. Louis International Airport around one week ahead gives you the best chance of locking in a great deal.
Getting from Lambert-St. Louis International Airport (STL) to central St Louis
The address for STL is 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.
When travelling on public transport, expect a journey of roughly 35 minutes.
When to fly to Lambert-St. Louis International Airport (STL)
July is the busiest month for flights from Ontario International Airport to Lambert-St. Louis International Airport. To skip the crowds, head to St Louis in April.
Book your flight from Ontario International Airport to Lambert-St. Louis International Airport for July if you want to visit St Louis during its warmest month. Expect temperatures of between 17ºC and 33ºC.
January has average temperatures of between -8ºC and 7ºC. Look for cheap tickets from ONT to STL sometime around then if you want to travel when it's cooler.
Explore more of United States
St Louis has plenty going for it, but there are so many other corners of United States just waiting to be explored. Around 418 kilometres north-east of St Louis, a visit to Chicago will keep you on the go. Start with popular sights like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.
If you're ready to explore another well-known destination in United States, consider Indianapolis, roughly 370 kilometres east of St Louis. The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo are key highlights.
