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

Last minute flights from Ontario, CA to St. Louis, MO

Save big and visit this destination

Prices shown below were available within the past 3 days for the period specified and should not be considered the final price offered. Please note that availability and prices are subject to change.

Ontario, CA St. Louis, MO

BEST

DEAL

Sat, 23 Nov ONT - STL

Sat, 30 Nov STL - ONT

$557 $541

Prime price per passenger

Ontario, CA St. Louis, MO

BEST

DEAL

Mon, 13 Jan ONT - STL

-22 %

$49 $38

Prime price per passenger

Ontario, CA St. Louis, MO

BEST

DEAL

Sun, 17 Nov ONT - STL

Wed, 20 Nov STL - ONT

$106 $103

Prime price per passenger

Ontario, CA St. Louis, MO

BEST

DEAL

Sun, 10 Nov ONT - STL

Sun, 17 Nov STL - ONT

$150 $145

Prime price per passenger

Ontario, CA St. Louis, MO

BEST

DEAL

Thu, 28 Nov ONT - STL

Thu, 05 Dec STL - ONT

$148 $143

Prime price per passenger

Ontario, CA St. Louis, MO

BEST

DEAL

Fri, 29 Nov ONT - STL

Mon, 02 Dec STL - ONT

$707 $691

Prime price per passenger

Route information

Distance: 1554 miles

Ontario, CA airports

Ontario International (ONT) How far from city center: 2 miles

St. Louis, MO airports

Lambert-St Louis Internatl (STL) How far from city center: 12 miles

Are you searching for flights from Ontario, CA to St. Louis, MO?

Are you planning to travel to St. Louis, MO for vacations, business or family visits? eDreams offers you the cheapest flights and best deals departing from Ontario, CA. With our fast search engine you will get a large selection of airfares from standard and low cost airlines worldwide and easily book your tickets for this route. If you are flexible we help you identify the cheapest day to fly to St. Louis, MO and if you need to leave soon you can check our most convenient last minute fares. Read all the useful information about your next destination and proceed to the reservation, indicating your flight dates and completing your travel booking with hotels and car rental!

Frequently asked questions about flights from Ontario, CA to St. Louis, MO

What are the benefits of booking flexible flight tickets?

Using the flexible flight ticket, you're guaranteed a refund or a rebooking option (without fees) in case of flight cancellations when travelling to United States. At eDreams have you covered!

For flights from Ontario, CA to St. Louis, MO, how can I find the cheapest price?

The cheapest price for a flight from Ontario, CA to St. Louis, MO is $38. At eDreams we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.

When booking, when is the best time to get the best prices for flights from Ontario, CA to St. Louis, MO?

The most popular months to book a trip from Ontario, CA to St. Louis, MO are May, August and April, based on the searches of our customers.

When is the best time to travel from Ontario, CA to St. Louis, MO?

The best time of the year to visit St. Louis, MO depends on lots of personal preferences, especially the price. Regarding popularity, June is the best month to fly to St. Louis, MO from Ontario, CA in terms of searches from our customers, followed by May and August. If you prefer to avoid the busy season and get away from the crowds January, March and December are the months with fewer searches for Ontario, CA - St. Louis, MO.

How is the weather in St. Louis, MO compared to Ontario, CA?

While in Ontario, CA the temperatures can reach an average of 36.7 ºC in summer, with precipitation levels up to 1.4 mm ,St. Louis, MO's temperatures can go up to 34.91 ºC during the hot season, with 12.0 mm average of rain rate . In winter, however, weather indicators show around -13.87 ºC in St. Louis, MO, compared to the -0.46 ºC average degrees reported in Ontario, CA. During the winter period, Ontario, CA can register 3.0 mm precipitation, while St. Louis, MO have an average of 6.0 mm rain level.

Cheapest flight $38 The best price for flights from Ontario, CA to St. Louis, MO offered by eDreams, which have been found by our customers in the last 3 days

Departure Airport Ontario International Ontario International is where you'll take off when flying from Ontario, CA to St. Louis, MO

Arrival Airport Lambert-St Louis Internatl You'll land at Lambert-St Louis Internatl when flying from Ontario, CA to St. Louis, MO

Peak season June June is the busiest time to fly from Ontario, CA to St. Louis, MO according to search data results from our customers