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ONT (Ontario) to STL (St. Louis) Flights $307.6

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Cheap ONT to STL Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Ontario to St. Louis (ONT to STL)

Question : How often is the Ontario International Airport (ONT) to Lambert-St. Louis International Airport (STL) route delayed?
Answer : Passengers on the Ontario to Saint Louis route have been getting to their destination on time an incredible 100% of the time.

Question : How many days should you spend in Saint Louis?
Answer : Over the next two months, passengers from ONT to STL are planning on staying for six days on average.

Question : Should you take that vacation to Saint Louis in the next 30 days?
Answer : Since low prices are preferred, look at Jul 13th. As of Jun 26th, it's showing the cheapest ticket sales at $394. That is 17% below the average price for this route, so you can spend that extra cash on an adventure in Saint Louis.

Question : Is price more important than specific travel days for you?
Answer : The best day to fly on a budget this month is Sunday. Being flexible with your travel days garners even more savings during booking.

Question : Is there another way to get to Lambert-St. Louis International Airport (STL) besides Ontario International Airport (ONT)?
Answer : Departing from Ontario International Airport is not the only way to get to Lambert-St. Louis International Airport. Try searching for flights from John Wayne Airport (SNA) as well. Over the next two months, flights from SNA to STL are being priced 11% cheaper than flights from ONT to STL. Being only 30 miles away, it's easily accessible for most.

Question : How does Ontario to Saint Louis stack up against the rest of the world in overall promptness?
Answer : Using the combined on-time percentage and average delay breakdown, Ontario to Saint Louis currently has a 4 out of a possible 5 star rating. A 4-star rating means you should feel confident in getting to Saint Louis on time.

Question : Are you paying the cheapest or highest price for your ticket to Saint Louis?
Answer : Prices for this trip tend to fluctuate less than other flights in the United States. They can range from $308 to $877. Prices tend to be lower the further out you book.