Cheap Flights Ontario to St. Louis (ONT-STL)

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Lambert-St. Louis International Airport (STL)

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Cheap Flights from Ontario (ONT) to St. Louis (STL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 21 Oct - Thu, 6 Nov
ONT
Ontario
STL
St. Louis
NZ$491 Return, found 1 day ago
NZ$491
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 21 Oct from Ontario to St. Louis, returning Thu, 6 Nov, priced at NZ$491 found 1 day ago
Delta
Fri, 24 Oct - Sat, 8 Nov
ONT
Ontario
STL
St. Louis
NZ$492 Return, found 1 day ago
NZ$492
Return
found 1 day ago
Select Delta flight, departing Fri, 24 Oct from Ontario to St. Louis, returning Sat, 8 Nov, priced at NZ$492 found 1 day ago

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to STL?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from ONT to STL was NZ$491. Fares this good don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to STL?
This can differ between air carriers, as each has its own terms and conditions. Head to the Customer Service Portal, where you'll find easy instructions on how to cancel online.
How do I find cheap flights from Ontario Airport to STL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Los Angeles - Ontario Intl. Airport (ONT) to STL flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to STL?
The flying distance from Ontario Airport to St. Louis Lambert International Airport is 2 500 kilometres. Sneak in a nap or finish off your latest read and the trip will zip by.
Which airlines fly direct from Ontario Airport to St. Louis Lambert International Airport?
If you want to fly straight from Los Angeles - Ontario Intl. Airport (ONT) to Lambert-St. Louis Intl. Airport (STL), you'll have to book a flight with one or more stops. Unfortunately, there are no airlines that fly directly between these airports.
Are Los Angeles - Ontario Intl. Airport (ONT) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Ontario Airport to St. Louis Lambert International Airport last minute could save you some serious cash. However, you might miss out on a flight altogether! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

Travel information

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, Delta
Return price
NZ$491
Distance
2467 km
Average flight time
5 hours 15 mins

Book with confidence

Book with confidence

Perfect flights from Ontario to St. Louis

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Ontario to St. Louis. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Los Angeles - Ontario Intl. to Lambert-St. Louis Intl. ticket options cater to your travel preferences, with incredible one-way fares and roundtrip prices from NZ$491. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Lambert-St. Louis Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in St. Louis.
Perfect flights from Ontario to St. Louis

Explore a world of travel with Expedia

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Los Angeles Intl. to St. Louis
NZ$579.70
*Available to Expedia members.