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 7:24 PM6h 26m1 stopsONT 11:50 PMSt. Louis - Ontario | Fri, Jun 6 | Frontier Airlines
SIN 12:59 AM6h 13m1 stopsSTL 9:12 AMOntario - St. Louis | Sat, Jun 14 | Frontier AirlinesPHP 9,826 PHP 14,11630% OFF30% OFFPHP 14,116 PHP 9,826 -
STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 9 | Frontier Airlines
SIN 12:59 AM6h 12m1 stopsSTL 9:11 AMOntario - St. Louis | Mon, Jul 14 | Frontier AirlinesPHP 9,981 PHP 14,11628% OFF28% OFFPHP 14,116 PHP 9,981
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STL 2:27 PM8h 24m1 stopsONT 8:51 PMSt. Louis - Ontario | Sun, Jun 15 | Frontier Airlines
SIN 6:15 AM24h 57m1 stopsSTL 9:12 AMOntario - St. Louis | Tue, Jun 17 | Frontier AirlinesPHP 11,343 PHP 14,11620% OFF20% OFFPHP 14,116 PHP 11,343
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STL 8:11 PM15h 1m1 stopsONT 9:12 AMSt. Louis - Ontario | Sat, Jun 7 | Frontier Airlines
SIN 12:39 PM23h 3m1 stopsSTL 1:42 PMOntario - St. Louis | Wed, Jun 11 | Frontier AirlinesPHP 12,06215% OFFPHP 14,116 PHP 12,062
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Sat, Jul 19 | Frontier Airlines
SIN 12:59 AM6h 12m1 stopsSTL 9:11 AMOntario - St. Louis | Wed, Jul 23 | Frontier AirlinesPHP 12,20914% OFFPHP 14,116 PHP 12,209
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Sat, Jun 14 | Frontier Airlines
SIN 12:59 AM6h 13m1 stopsSTL 9:12 AMOntario - St. Louis | Sat, Jun 21 | Frontier AirlinesPHP 12,30213% OFFPHP 14,116 PHP 12,302
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STL 8:11 PM14h 50m1 stopsONT 9:01 AMSt. Louis - Ontario | Wed, Jun 11 | Frontier Airlines
SIN 12:59 AM6h 13m1 stopsSTL 9:12 AMOntario - St. Louis | Wed, Jun 18 | Frontier AirlinesPHP 12,41112% OFFPHP 14,116 PHP 12,411
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 16 | Frontier Airlines
SIN 12:59 AM6h 12m1 stopsSTL 9:11 AMOntario - St. Louis | Wed, Jul 23 | Frontier AirlinesPHP 12,41112% OFFPHP 14,116 PHP 12,411
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 2 | Frontier Airlines
SIN 12:59 AM6h 12m1 stopsSTL 9:11 AMOntario - St. Louis | Wed, Jul 9 | Frontier AirlinesPHP 12,45712% OFFPHP 14,116 PHP 12,457
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jun 25 | Frontier Airlines
SIN 12:59 AM6h 13m1 stopsSTL 9:12 AMOntario - St. Louis | Wed, Jul 2 | Frontier AirlinesPHP 12,70510% OFFPHP 14,116 PHP 12,705
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STL 1:00 PM17h 25m1 stopsLAX Invalid DateSt. Louis - Los Angeles | Thu, Jun 5 | Normal Airline
LAX 3:00 PM6hNonstopSTL 4:00 PMLos Angeles - St. Louis | Sat, Jun 7 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
STL 2:50 PM6h 5mNonstopONT 6:55 PMSt. Louis - Ontario | Mon, Jul 14 | Southwest AirlinesPHP 12,024 PHP 15,46622% OFF22% OFFPHP 15,466 PHP 12,024 -
STL 2:50 PM6h 5mNonstopONT 6:55 PMSt. Louis - Ontario | Fri, Jun 6 | Southwest AirlinesPHP 13,919 PHP 15,46610% OFF10% OFFPHP 15,466 PHP 13,919
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 9 | Frontier AirlinesPHP 4,813 PHP 15,46669% OFF69% OFFPHP 15,466 PHP 4,813
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Sat, Jul 12 | Frontier AirlinesPHP 4,91368% OFFPHP 15,466 PHP 4,913
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STL 2:27 PM8h 25m1 stopsONT 8:52 PMSt. Louis - Ontario | Mon, Jul 28 | Frontier AirlinesPHP 5,80362% OFFPHP 15,466 PHP 5,803
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Sat, Jun 14 | Frontier AirlinesPHP 6,01261% OFFPHP 15,466 PHP 6,012
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STL 7:24 PM6h 26m1 stopsONT 11:50 PMSt. Louis - Ontario | Mon, Jun 9 | Frontier AirlinesPHP 6,09761% OFFPHP 15,466 PHP 6,097
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 2 | Frontier AirlinesPHP 6,23660% OFFPHP 15,466 PHP 6,236
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Wed, Jul 30 | Frontier AirlinesPHP 6,23660% OFFPHP 15,466 PHP 6,236
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STL 8:11 PM15h 1m1 stopsONT 9:12 AMSt. Louis - Ontario | Sat, Jun 7 | Frontier AirlinesPHP 6,29159% OFFPHP 15,466 PHP 6,291
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Fri, Jun 13 | Frontier AirlinesPHP 6,29859% OFFPHP 15,466 PHP 6,298
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STL 7:29 PM6h 21m1 stopsONT 11:50 PMSt. Louis - Ontario | Sat, Jul 19 | Frontier AirlinesPHP 6,31459% OFFPHP 15,466 PHP 6,314
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STL 1:00 PM17h 25m1 stopsLAX Invalid DateSt. Louis - Los Angeles | Thu, Jun 5 | 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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WN2368
St. Louis Lambert International Airport
10:05 PM
STL
11:15 PM
PHX
S - - W T F SSearch -
WN5276
Phoenix Sky Harbor International Airport
10:20 PM
PHX
11:30 PM
ONT
S - - W T - - -
F94567
St. Louis Lambert International Airport
7:29 PM
STL
8:56 PM
DEN
S - T - T F -Search -
F91499
Denver International Airport
10:29 PM
DEN
11:50 PM
ONT
S - - W T - S -
DL1492
St. Louis Lambert International Airport
7:19 PM
STL
9:31 PM
SLC
S M T W T F SSearch -
DL1614
Salt Lake City International Airport
10:54 PM
SLC
11:42 PM
ONT
S M T W T F S -
DL1524
St. Louis Lambert International Airport
6:00 AM
STL
8:39 AM
ATL
S M T W T F SSearch -
DL665
Hartsfield-Jackson Atlanta International Airport
9:40 AM
ATL
11:20 AM
ONT
S M T W T F S -
DL1485
St. Louis Lambert International Airport
5:40 PM
STL
8:20 PM
ATL
S M T W T F SSearch -
DL779
Hartsfield-Jackson Atlanta International Airport
8:59 PM
ATL
10:41 PM
ONT
S M T W T F S -
DL2363
St. Louis Lambert International Airport
7:30 AM
STL
9:39 AM
SLC
S M T W T F SSearch -
DL1786
Salt Lake City International Airport
11:30 AM
SLC
12:14 PM
ONT
S M - - - - S -
WN4632
St. Louis Lambert International Airport
4:35 PM
STL
5:50 PM
PHX
S - - W T F SSearch -
WN3789
Phoenix Sky Harbor International Airport
6:50 AM
PHX
8:05 AM
ONT
S - - W T - - -
F92017
St. Louis Lambert International Airport
2:37 PM
STL
4:13 PM
LAS
S - T W T - SSearch -
F92231
Harry Reid International Airport
7:45 PM
LAS
8:51 PM
ONT
S M T W T F S -
HA7126
St. Louis Lambert International Airport
2:55 PM
STL
5:21 PM
SEA
S M T W T F SSearch -
HA6811
Seattle–Tacoma International Airport
8:15 PM
SEA
10:46 PM
ONT
S M T W T F S -
AS315
St. Louis Lambert International Airport
3:03 PM
STL
5:32 PM
SEA
S M T W T F SSearch -
AS1003
Seattle–Tacoma International Airport
8:15 PM
SEA
10:46 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 4,812 |
| Cheapest return ticket price | PHP 18,251 |
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 31,891 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 31,891 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 240 flights per month.
Popular Destinations
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