Popular in | June |
---|---|
Cheapest in | August |
Round-trip from | $238 |
One-way from | $205 |
Thursday flights are generally found to be more expensive for flights from St. Louis to Ontario. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.
Travelers have found it’s best to book a flight 58 days in advance to save up to 30% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 58 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Ontario 1-2 weeks in advance for as low as $477, or $754 for flights within the next 24 hours.
Our data shows that January tends to be the cheapest month to fly to Ontario from St. Louis. Users have commonly found prices around $446 for the month, but tickets can be as low as $177. Due to multiple factors, prepare for potentially higher prices in March.
It’s optimal to fly from St. Louis to Ontario in the evening. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight at noon.
Fly from
Fly to
Budget
$130 - $446
Route
Depart
Return
Price
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Thu 4/25
1 stop10h 09m
Ontario
Mon 4/29
1 stop9h 19m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Thu 4/25
1 stop14h 18m
Ontario
Sat 4/27
1 stop11h 30m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 4/16
1 stop13h 17m
Ontario
Mon 4/22
1 stop12h 51m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Wed 4/17
1 stop12h 22m
Ontario
Wed 4/24
1 stop9h 29m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 4/13
1 stop6h 00m
Ontario
Fri 4/19
1 stop6h 48m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 4/30
1 stop10h 09m
Ontario
Wed 5/1
1 stop9h 29m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 4/13
1 stop6h 12m
Ontario
Sat 4/20
1 stop5h 22m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 4/13
2 stops16h 52m
Ontario
Sat 4/20
1 stop15h 59m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 5/25
1 stop6h 09m
Ontario
Tue 6/4
1 stop6h 04m
Currently, October is the cheapest month in which you can book a flight from St. Louis to Ontario (average of $238). Flying from St. Louis to Ontario in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
January
$271
February
$287
March
$281
April
$306
May
$282
June
$357
July
$332
August
$288
September
$258
October
$238
November
$268
December
$271
LAX Temperature | 57.2 - 73.4 °F |
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Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.
When you search for this flight from St. Louis to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Ontario for you. Better yet — we are completely free to use.
Certainly. Search results for flights to Ontario from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Yes! Start tracking prices for St. Louis to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.