Flights from St. Louis Lambert International Airport to Ontario International Airport
Cheap Flights from St. Louis Lambert International Airport to Ontario International Airport
Search for flights from St. Louis to Los Angeles and check out affordable one-way and round-trip options.
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Round-trip
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One way
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STL 6:53 PM7h 6m1 stopsONT 11:59 PMSt. Louis - Ontario | Sat, May 3 | Frontier Airlines
SIN 12:59 AM6h 10m1 stopsSTL 9:09 AMOntario - St. Louis | Wed, May 7 | Frontier AirlinesPHP 6,651 PHP 11,53142% OFF42% OFFPHP 11,531 PHP 6,651 -
STL 6:51 PM7h 8m1 stopsONT 11:59 PMSt. Louis - Ontario | Sat, Apr 19 | Frontier Airlines
SIN 12:59 AM6h 7m1 stopsSTL 9:06 AMOntario - St. Louis | Mon, Apr 21 | Frontier AirlinesPHP 7,716 PHP 11,53133% OFF33% OFFPHP 11,531 PHP 7,716
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STL 9:55 PM25h 32m1 stopsONT 9:27 PMSt. Louis - Ontario | Fri, May 2 | Frontier Airlines
SIN 12:59 AM6h 10m1 stopsSTL 9:09 AMOntario - St. Louis | Sat, May 10 | Frontier AirlinesPHP 8,073 PHP 11,53130% OFF30% OFFPHP 11,531 PHP 8,073
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STL 9:55 PM11h 29m1 stopsONT 7:24 AMSt. Louis - Ontario | Sun, May 4 | Frontier Airlines
SIN 12:59 AM12h 8m1 stopsSTL 3:07 PMOntario - St. Louis | Thu, May 8 | Frontier AirlinesPHP 8,18228% OFFPHP 11,531 PHP 8,182
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STL 9:55 PM13h 58m1 stopsONT 9:53 AMSt. Louis - Ontario | Mon, Apr 28 | Frontier Airlines
SIN 4:59 PM29h 5m1 stopsSTL 12:04 AMOntario - St. Louis | Tue, Apr 29 | Frontier AirlinesPHP 8,40727% OFFPHP 11,531 PHP 8,407
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STL 6:58 PM7h 1m1 stopsONT 11:59 PMSt. Louis - Ontario | Wed, Apr 23 | Frontier Airlines
SIN 12:59 AM7h 2m1 stopsSTL 10:01 AMOntario - St. Louis | Mon, Apr 28 | Frontier AirlinesPHP 8,62525% OFFPHP 11,531 PHP 8,625
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STL 6:58 PM7h 1m1 stopsONT 11:59 PMSt. Louis - Ontario | Wed, Apr 30 | Frontier Airlines
SIN 12:59 AM6h 10m1 stopsSTL 9:09 AMOntario - St. Louis | Wed, May 7 | Frontier AirlinesPHP 9,09121% OFFPHP 11,531 PHP 9,091
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STL 9:55 PM17h 21m1 stopsONT 1:16 PMSt. Louis - Ontario | Thu, May 8 | Frontier Airlines
SIN 12:59 AM6h 10m1 stopsSTL 9:09 AMOntario - St. Louis | Wed, May 14 | Frontier AirlinesPHP 9,78215% OFFPHP 11,531 PHP 9,782
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STL 6:58 PM7h 1m1 stopsONT 11:59 PMSt. Louis - Ontario | Fri, Apr 25 | Frontier Airlines
SIN 12:59 AM12h 8m1 stopsSTL 3:07 PMOntario - St. Louis | Thu, May 1 | Frontier AirlinesPHP 10,07013% OFFPHP 11,531 PHP 10,070
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STL 9:55 PM13h 59m1 stopsONT 9:54 AMSt. Louis - Ontario | Mon, May 12 | Frontier Airlines
SIN 4:59 PM29h 7m1 stopsSTL 12:06 AMOntario - St. Louis | Tue, May 13 | Frontier AirlinesPHP 10,14812% OFFPHP 11,531 PHP 10,148
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STL 1:00 PM17h 25m1 stopsLAX Invalid DateSt. Louis - Los Angeles | Mon, Apr 21 | Normal Airline
LAX 3:00 PM6hNonstopSTL 4:00 PMLos Angeles - St. Louis | Wed, Apr 23 | Normal AirlineFind More FlightsFind More Flights
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STL 9:55 PM11h 25m1 stopsONT 7:20 AMSt. Louis - Ontario | Sun, Apr 27 | Frontier AirlinesPHP 4,320 PHP 7,07239% OFF39% OFFPHP 7,072 PHP 4,320
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STL 6:58 PM7h 1m1 stopsONT 11:59 PMSt. Louis - Ontario | Sat, Apr 26 | Frontier AirlinesPHP 4,522 PHP 7,07236% OFF36% OFFPHP 7,072 PHP 4,522
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STL 4:07 PM9h 52m1 stopsONT 11:59 PMSt. Louis - Ontario | Thu, May 15 | Frontier AirlinesPHP 4,662 PHP 7,07234% OFF34% OFFPHP 7,072 PHP 4,662
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STL 9:55 PM25h 28m1 stopsONT 9:23 PMSt. Louis - Ontario | Fri, Apr 25 | Frontier AirlinesPHP 4,71633% OFFPHP 7,072 PHP 4,716
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STL 9:55 PM11h 29m1 stopsONT 7:24 AMSt. Louis - Ontario | Sun, May 11 | Frontier AirlinesPHP 4,77932% OFFPHP 7,072 PHP 4,779
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STL 9:55 PM16h 13m1 stopsONT 12:08 PMSt. Louis - Ontario | Mon, May 12 | Frontier AirlinesPHP 4,98130% OFFPHP 7,072 PHP 4,981
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STL 6:53 PM7h 6m1 stopsONT 11:59 PMSt. Louis - Ontario | Fri, May 9 | Frontier AirlinesPHP 4,99628% OFFPHP 7,072 PHP 4,996
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STL 6:53 PM7h 6m1 stopsONT 11:59 PMSt. Louis - Ontario | Sat, May 3 | Frontier AirlinesPHP 5,20626% OFFPHP 7,072 PHP 5,206
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STL 9:55 PM11h 29m1 stopsONT 7:24 AMSt. Louis - Ontario | Fri, May 2 | Frontier AirlinesPHP 6,18513% OFFPHP 7,072 PHP 6,185
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STL 9:55 PM17h 19m1 stopsONT 1:14 PMSt. Louis - Ontario | Thu, Apr 24 | Frontier AirlinesPHP 6,22412% OFFPHP 7,072 PHP 6,224
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STL 1:00 PM17h 25m1 stopsLAX Invalid DateSt. Louis - Los Angeles | Mon, Apr 21 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Selected Airlines from St. Louis Lambert International Airport to Ontario International Airport
See which airlines fly from St. Louis to Los Angeles. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.
Flight Schedule from St. Louis Lambert International Airport to Ontario International Airport
Check the schedule for flights from St. Louis to Los Angeles and find the flight that best matches your travel plans.
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DL2363
St. Louis Lambert International Airport
7:40 AM
STL
9:58 AM
SLC
S M T W T F SSearch -
DL1345
Salt Lake City International Airport
8:10 AM
SLC
8:58 AM
ONT
S M T W T F S -
F94567
St. Louis Lambert International Airport
7:29 PM
STL
8:58 PM
DEN
S M T - T F SSearch -
F91499
Denver International Airport
10:29 PM
DEN
11:50 PM
ONT
S M T W T F S -
DL1492
St. Louis Lambert International Airport
6:59 PM
STL
9:11 PM
SLC
S M T W T F SSearch -
DL1614
Salt Lake City International Airport
10:55 PM
SLC
11:43 PM
ONT
S M T W T F S -
DL2355
St. Louis Lambert International Airport
12:51 PM
STL
3:26 PM
ATL
S M T W T F SSearch -
DL770
Hartsfield-Jackson Atlanta International Airport
5:59 PM
ATL
7:29 PM
ONT
S M T W T F S -
F92017
St. Louis Lambert International Airport
2:27 PM
STL
4:03 PM
LAS
- - - W T - -Search -
F94757
Harry Reid International Airport
6:00 AM
LAS
7:09 AM
ONT
S M T W T - S -
F92017
St. Louis Lambert International Airport
2:27 PM
STL
4:03 PM
LAS
- - - W T - -Search -
F91283
Harry Reid International Airport
6:20 AM
LAS
7:23 AM
ONT
S M T W T F S -
F94567
St. Louis Lambert International Airport
7:29 PM
STL
8:58 PM
DEN
S M T - T F SSearch -
F91261
Denver International Airport
7:40 AM
DEN
9:00 AM
ONT
S M T W T F S -
F93641
St. Louis Lambert International Airport
9:29 PM
STL
11:29 PM
LAS
S - - - T - SSearch -
F94757
Harry Reid International Airport
6:00 AM
LAS
7:09 AM
ONT
S M T W T - S -
F92017
St. Louis Lambert International Airport
2:27 PM
STL
4:03 PM
LAS
- - - W T - -Search -
F91357
Harry Reid International Airport
10:43 AM
LAS
11:53 AM
ONT
S M T W T F S -
WN1961
St. Louis Lambert International Airport
10:00 AM
STL
11:20 AM
DEN
S M T W T - -Search -
F91499
Denver International Airport
10:29 PM
DEN
11:50 PM
ONT
S M T W T F S
St. Louis Lambert International Airport to Ontario International Airport Flights Info
| Flight distance | 2,485.2 km |
|---|---|
| Cheapest one-way ticket price | PHP 4,320 |
| Cheapest return ticket price | PHP 15,540 |
FAQs for St. Louis Lambert International Airport to Ontario International Airport Flights
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How long is a flight from St. Louis Lambert International Airport to Ontario International Airport?
It takes around 6 hours 5 minutes to fly from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT). -
How many daily flights are there from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT)?
There are around 1 daily flights from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT). -
When are flight tickets from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT) the cheapest?
Tickets cost around PHP 11,771 in June, making it the cheapest month to book. St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT) is a popular route, so don't forget to book your tickets in advance. -
When are flight tickets from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT) most expensive?
The route from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT) is quite popular. Without considering departure times or holidays, tickets cost around PHP 11,771 in June, the most expensive month to book this route. -
What is the transportation method from the main airport to downtown in Los Angeles?
- The distance from Los Angeles International Airport to downtown is about 19 km. It takes about 30 minutes by taxi.
- The distance from Ontario International Airport to downtown is about 59 km. It takes about 1 hour 10 minutes by taxi.
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Which airline operates the most direct flights from St. Louis Lambert International Airport (STL) to Ontario International Airport (ONT)?
Southwest Airlines is a very popular airline operating an average of 44 flights per month.
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