Popular in | December |
---|---|
Cheapest in | April |
Average price | $389 |
Round-trip from | $238 |
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 37 days in advance to save up to 108% 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 37 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 $589, or $654 for flights within the next 24 hours.
Our data shows that April tends to be the cheapest month to fly to Ontario from St. Louis. Users have commonly found prices around $413 for the month, but tickets can be as low as $185. 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 57% on the cost of your flight, compared to a flight at noon.
Fly from
Fly to
Budget
$140 - $354
Route
Depart
Return
Price
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Wed 5/29
1 stop12h 19m
Ontario
Fri 5/31
1 stop9h 09m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Thu 5/30
1 stop18h 23m
Ontario
Tue 6/4
1 stop6h 30m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 9/3
1 stop15h 37m
Ontario
Fri 9/6
1 stop6h 48m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 6/11
1 stop10h 12m
Ontario
Wed 6/12
1 stop28h 29m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Mon 8/12
1 stop18h 32m
Ontario
Mon 8/19
1 stop16h 11m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Mon 6/10
1 stop5h 37m
Ontario
Thu 6/20
1 stop11h 02m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 9/3
2 stops7h 53m
Ontario
Sat 9/7
1 stop9h 09m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Tue 9/3
2 stops17h 15m
Ontario
Fri 9/6
1 stop6h 48m
Lambert-St LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Thu 5/30
1 stop6h 18m
Ontario
Wed 6/5
1 stop6h 22m
Currently, October is the cheapest month in which you can book a flight from St. Louis to Ontario (average of $237). Flying from St. Louis to Ontario in June is currently the most expensive (average of $337). 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
$268
February
$287
March
$281
April
$256
May
$268
June
$337
July
$337
August
$287
September
$258
October
$237
November
$267
December
$272
LAX Temperature | 57.2 - 73.4 °F |
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Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Comfort
Food
Entertainment
Crew
Overall
Boarding
Reviews
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
0%of flight departures | Early morningMidnight to 6 am |
---|---|
0%of flight departures | Morning6 am to noon |
0%of flight departures | AfternoonNoon to 6 pm |
100%of flight departures | Evening6 pm to midnight |
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.