Flights from Ontario International Airport to St. Louis Lambert International Airport
Cheap Flight Deals from Ontario International Airport to St. Louis Lambert International Airport
Search for flights from Los Angeles to St. Louis and check out affordable one-way and round-trip options.
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ONT 12:1618h 53m1 stopsSTL 09:09Ontario - St. Louis | Tue, May 6 | Frontier Airlines
STL 18:537h 6m1 stopsSIN 23:59St. Louis - Ontario | Sat, May 10 | Frontier AirlinesAU$ 179 AU$ 36851% OFF51% OFFAU$ 368 AU$ 179 -
ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Mon, May 5 | Frontier Airlines
STL 18:537h 37m1 stopsSIN 00:30St. Louis - Ontario | Sat, May 10 | Frontier AirlinesAU$ 182 AU$ 36851% OFF51% OFFAU$ 368 AU$ 182
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ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Sat, May 3 | Frontier Airlines
STL 16:079h 52m1 stopsSIN 23:59St. Louis - Ontario | Thu, May 8 | Frontier AirlinesAU$ 223 AU$ 36839% OFF39% OFFAU$ 368 AU$ 223
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ONT 12:1019h 51m1 stopsSTL 10:01Ontario - St. Louis | Tue, Apr 29 | Frontier Airlines
STL 18:587h 1m1 stopsSIN 23:59St. Louis - Ontario | Wed, Apr 30 | Frontier AirlinesAU$ 22938% OFFAU$ 368 AU$ 229
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ONT 00:597h 2m1 stopsSTL 10:01Ontario - St. Louis | Wed, Apr 30 | Frontier Airlines
STL 18:537h 6m1 stopsSIN 23:59St. Louis - Ontario | Wed, May 7 | Frontier AirlinesAU$ 23237% OFFAU$ 368 AU$ 232
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ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Wed, May 7 | Frontier Airlines
STL 18:537h 6m1 stopsSIN 23:59St. Louis - Ontario | Wed, May 14 | Frontier AirlinesAU$ 24633% OFFAU$ 368 AU$ 246
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ONT 12:1618h 53m1 stopsSTL 09:09Ontario - St. Louis | Tue, May 20 | Frontier Airlines
STL 21:4911h 34m1 stopsSIN 07:23St. Louis - Ontario | Thu, May 22 | Frontier AirlinesAU$ 25531% OFFAU$ 368 AU$ 255
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ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Sat, May 17 | Frontier Airlines
STL 18:537h 6m1 stopsSIN 23:59St. Louis - Ontario | Wed, May 21 | Frontier AirlinesAU$ 27226% OFFAU$ 368 AU$ 272
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ONT 00:597h1 stopsSTL 09:59Ontario - St. Louis | Sat, May 10 | Frontier Airlines
STL 21:5512h 39m1 stopsSIN 08:34St. Louis - Ontario | Sun, May 11 | Frontier AirlinesAU$ 27924% OFFAU$ 368 AU$ 279
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ONT 10:528h 13m1 stopsSTL 21:05Ontario - St. Louis | Thu, May 8 | Frontier Airlines
STL 20:156h 15m1 stopsSIN 00:30St. Louis - Ontario | Sat, May 10 | Frontier AirlinesAU$ 30617% OFFAU$ 368 AU$ 306
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LAX 13:0017h 25m1 stopsSTL Invalid DateLos Angeles - St. Louis | Wed, Apr 30 | Normal Airline
STL 15:006hDirectLAX 16:00St. Louis - Los Angeles | Fri, May 2 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ONT 16:354h 50mDirectSTL 23:25Ontario - St. Louis | Sat, Jun 7 | Southwest AirlinesAU$ 322 AU$ 55141% OFF41% OFFAU$ 551 AU$ 322 -
ONT 06:205h 45mDirectSTL 14:05Ontario - St. Louis | Sat, May 3 | Southwest AirlinesAU$ 457 AU$ 55117% OFF17% OFFAU$ 551 AU$ 457
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ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Mon, May 5 | Frontier AirlinesAU$ 94 AU$ 55183% OFF83% OFFAU$ 551 AU$ 94
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ONT 10:528h 13m1 stopsSTL 21:05Ontario - St. Louis | Thu, May 1 | Frontier AirlinesAU$ 10681% OFFAU$ 551 AU$ 106
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ONT 00:597h1 stopsSTL 09:59Ontario - St. Louis | Wed, May 21 | Frontier AirlinesAU$ 12677% OFFAU$ 551 AU$ 126
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ONT 00:597h1 stopsSTL 09:59Ontario - St. Louis | Sat, May 17 | Frontier AirlinesAU$ 12877% OFFAU$ 551 AU$ 128
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ONT 12:1618h 53m1 stopsSTL 09:09Ontario - St. Louis | Tue, May 13 | Frontier AirlinesAU$ 12977% OFFAU$ 551 AU$ 129
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ONT 00:597h1 stopsSTL 09:59Ontario - St. Louis | Wed, May 7 | Frontier AirlinesAU$ 13076% OFFAU$ 551 AU$ 130
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ONT 00:596h 10m1 stopsSTL 09:09Ontario - St. Louis | Wed, May 14 | Frontier AirlinesAU$ 13176% OFFAU$ 551 AU$ 131
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ONT 12:1019h 51m1 stopsSTL 10:01Ontario - St. Louis | Tue, Apr 29 | Frontier AirlinesAU$ 15372% OFFAU$ 551 AU$ 153
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ONT 00:597h1 stopsSTL 09:59Ontario - St. Louis | Sat, May 3 | Frontier AirlinesAU$ 15971% OFFAU$ 551 AU$ 159
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ONT 00:597h 2m1 stopsSTL 10:01Ontario - St. Louis | Wed, Apr 30 | Frontier AirlinesAU$ 16171% OFFAU$ 551 AU$ 161
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LAX 13:0017h 25m1 stopsSTL Invalid DateLos Angeles - St. Louis | Wed, Apr 30 | 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 Ontario International Airport to St. Louis Lambert International Airport
See which airlines fly from Los Angeles to St. Louis. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.
Flight Schedule from Ontario International Airport to St. Louis Lambert International Airport
Check the schedule for flights from Los Angeles to St. Louis and find the flight that best matches your travel plans.
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F91500
Ontario International Airport
00:59
ONT
04:16
DEN
S M T W T F SSearch -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F - -
F92232
Ontario International Airport
10:53
ONT
12:02
LAS
S M T W T F SSearch -
F93108
Harry Reid International Airport
08:20
LAS
13:42
STL
S - - W T - S -
UA2304
Ontario International Airport
16:15
ONT
19:35
DEN
- - - W T F -Search -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F - -
UA567
Ontario International Airport
16:17
ONT
19:37
DEN
S M T - - - -Search -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F - -
F94758
Ontario International Airport
20:45
ONT
21:53
LAS
S - - W T F SSearch -
F93108
Harry Reid International Airport
08:20
LAS
13:42
STL
S - - W T - S -
WN3065
Ontario International Airport
05:45
ONT
08:55
DEN
S M T W T - -Search -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F - -
F91358
Ontario International Airport
14:42
ONT
15:52
LAS
S M T W T F SSearch -
F93108
Harry Reid International Airport
08:20
LAS
13:42
STL
S - - W T - S -
F91262
Ontario International Airport
12:11
ONT
15:33
DEN
S M T W T F SSearch -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F - -
F94206
Ontario International Airport
22:21
ONT
23:32
LAS
S M T W - F -Search -
F93108
Harry Reid International Airport
08:20
LAS
13:42
STL
S - - W T - S -
UA1575
Ontario International Airport
05:05
ONT
08:23
DEN
- - - W T F -Search -
F93302
Denver International Airport
10:00
DEN
13:07
STL
S - T W T F -
Ontario International Airport to St. Louis Lambert International Airport Flights Info
| Flight distance | 2,485.2km |
|---|---|
| Cheapest one-way ticket price | AU$ 93 |
| Cheapest return ticket price | AU$ 334 |
FAQs for Ontario International Airport to St. Louis Lambert International Airport Flights
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How long is the flights from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL)?
It takes around 5 hours 12 minutes to fly from Ontario International Airport (ONT) to St. Louis Lambert International Airport(STL). -
How many daily flights are there from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL)?
There are around 2 daily flights from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL). -
When are flight from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL) the cheapest?
Tickets cost around AU$ 321 in June, making it the cheapest month to book. Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL) is a popular route, so don't forget to book your tickets in advance. -
When are flight from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL) most expensive?
The route from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL) is quite popular. Without considering departure times or holidays, tickets cost around AU$ 366 in May, the most expensive month to book this route. -
What is the transportation method from the main airport to downtown in St. Louis?
- The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.
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Which airline operates the most direct flights from Ontario International Airport (ONT) to St. Louis Lambert International Airport (STL)?
Southwest Airlines is a very popular airline operating an average of 120 flights per month.
Most popular destination
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