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Flight Deals from Los Angeles to St. Louis from $103

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Bundle + Save

Top flight deals from leading airlines:

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... and +100s more

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Stops

  • Nonstop
    from $394
  • Up to 1 stop
    $227
  • Up to 2 stops
    $439

Airlines

  • Alaska Airlines
    $366
  • American Airlines
    $391
  • Delta Air Lines
    $301
  • Frontier Airlines
    $227
  • Hawaiian Airlines
    $402
  • United Airlines
    $396

Cabin Class

  • Economy
    $227

Departure Airports

  • Los Angeles International Airport
    $338
  • Ontario International Airport
    $227

Arrival Airports

  • St Louis Lambert International Airport
    $227

Layover Airports

  • Charlotte Douglas International Airport
    $396
  • Chicago O Hare Airport
    $414
  • Dallas Fort Worth International Airport
    $391
  • Denver International Airport
    $227
  • George Bush Intercontinental Houston Airport
    $436
  • Harry Reid International Airport
    $227
  • Hartsfield Jackson Atlanta International Airport
    $306
  • Minneapolis-St Paul International/Wold-Chamberlain Airport
    $338
  • Norman Y. Mineta San Jose International Airport
    $526
  • Phoenix Sky Harbor International Airport
    $424
  • Salt Lake City International Airport
    $301
  • San Francisco International Airport
    $416
  • Seattle Tacoma International Airport
    $366

Best Price. GUARANTEED.

Exclusively for Priceline Members
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BUNDLE & SAVE

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On average save $240 per traveler
Frontier Airlines Logo
Frontier Airlines

05/07/25

ONT
9h
DEN

05/07/25

STL
Frontier Airlines Logo
Frontier Airlines

05/17/25

STL
3h 44m
DEN

05/17/25

ONT
$227
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

05/30/25

ONT
7h 40m
LAS

05/30/25

STL
Frontier Airlines Logo
Frontier Airlines

06/02/25

STL
4h 26m
DEN

06/02/25

ONT
$227
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

05/24/25

ONT
9h 10m
DEN

05/24/25

STL
Frontier Airlines Logo
Frontier Airlines

06/02/25

STL
6h 24m
LAS

06/02/25

ONT
$237
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/21/25

ONT
7h 36m
SLC

05/22/25

STL
Delta Air Lines Logo
Delta Air Lines

05/24/25

STL
4h 45m
SLC

05/24/25

ONT
$301
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/20/25

ONT
7h 36m
SLC

05/21/25

STL
Delta Air Lines Logo
Delta Air Lines

05/24/25

STL
4h 45m
SLC

05/24/25

ONT
$301
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/27/25

ONT
7h 36m
SLC

05/28/25

STL
Delta Air Lines Logo
Delta Air Lines

06/03/25

STL
5h 8m
ATL

06/03/25

ONT
$306
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/24/25

ONT
11h 20m
ATL

05/24/25

STL
Delta Air Lines Logo
Delta Air Lines

06/02/25

STL
7h 3m
SLC

06/02/25

ONT
$315
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/31/25

LAX
10h 2m
MSP

05/31/25

STL
Delta Air Lines Logo
Delta Air Lines

06/07/25

STL
6h 58m
MSP

06/07/25

LAX
$338
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/20/25

LAX
11h 22m
SEA

05/20/25

STL
Alaska Airlines Logo
Alaska Airlines

06/11/25

STL
7h 27m
SEA

06/11/25

LAX
$366
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/04/25

LAX
10h 6m
SEA

06/05/25

STL
Alaska Airlines Logo
Alaska Airlines

06/11/25

STL
8h 56m
SEA

06/11/25

LAX
$374
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/21/25

ONT
9h
DFW

05/22/25

STL
American Airlines Logo
American Airlines

05/25/25

STL
2h 6m
Direct

05/25/25

ONT
$391
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/27/25

LAX
5h 35m
Direct

05/27/25

STL
American Airlines Logo
American Airlines

06/03/25

STL
2h 6m
Direct

06/03/25

LAX
$394
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

06/04/25

LAX
5h 35m
Direct

06/04/25

STL
American Airlines Logo
American Airlines

06/11/25

STL
1h 57m
Direct

06/11/25

LAX
$394
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/27/25

ONT
10h 16m
CLT

05/28/25

STL
American Airlines Logo
American Airlines

06/03/25

STL
4h 50m
DFW

06/03/25

ONT
$396
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/21/25

ONT
7h 37m
DEN

05/21/25

STL
United Airlines Logo
United Airlines

05/24/25

STL
4h 32m
DEN

05/24/25

ONT
$396
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/20/25

ONT
7h 43m
DEN

05/20/25

STL
United Airlines Logo
United Airlines

05/24/25

STL
4h 32m
DEN

05/24/25

ONT
$396
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/04/25

LAX
10h 6m
SEA

06/05/25

STL
Hawaiian Airlines Logo
Hawaiian Airlines

06/11/25

STL
6h 35m
SEA

06/11/25

LAX
$402
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/05/25

LAX
12h 9m
SEA

06/06/25

STL
Hawaiian Airlines Logo
Hawaiian Airlines

06/10/25

STL
7h 43m
SEA

06/10/25

LAX
$410
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/27/25

ONT
7h 36m
DEN

05/27/25

STL
United Airlines Logo
United Airlines

06/03/25

STL
6h 51m
ORD

06/03/25

ONT
$414
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/13/25

ONT
7h 41m
DEN

05/13/25

STL
United Airlines Logo
United Airlines

05/20/25

STL
5h 24m
SFO

05/20/25

ONT
$416
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/20/25

LAX
5h 35m
Direct

05/20/25

STL
American Airlines Logo
American Airlines

05/27/25

STL
6h 53m
CLT

05/27/25

LAX
$424
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/27/25

LAX
5h 35m
Direct

05/27/25

STL
American Airlines Logo
American Airlines

06/03/25

STL
4h 10m
PHX

06/03/25

LAX
$424
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/31/25

LAX
9h 11m
ORD

05/31/25

STL
United Airlines Logo
United Airlines

06/07/25

STL
6h 30m
ORD

06/07/25

LAX
$428
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/16/25

ONT
11h 7m
SFO

05/16/25

STL
United Airlines Logo
United Airlines

05/19/25

STL
8h 7m
SFO

05/19/25

ONT
$433
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/11/25

ONT
7h 43m
DEN

05/11/25

STL
United Airlines Logo
United Airlines

05/13/25

STL
5h 10m
IAH

05/13/25

ONT
$436
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/20/25

ONT
11h 22m
SEA

05/20/25

STL
Alaska Airlines Logo
Alaska Airlines

06/11/25

STL
8h 23m
SEA
SFO

06/11/25

ONT
$439
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/11/25

ONT
7h 41m
DEN

05/11/25

STL
United Airlines Logo
United Airlines

05/13/25

STL
7h 4m
DEN
SFO

05/13/25

ONT
$441
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

06/01/25

LAX
9h 14m
ORD

06/01/25

STL
United Airlines Logo
United Airlines

06/08/25

STL
5h 10m
IAH

06/08/25

LAX
$448
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/19/25

ONT
7h 23m
PHX

05/19/25

STL
American Airlines Logo
American Airlines

05/22/25

STL
4h 34m
ORD

05/22/25

ONT
$498
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/20/25

LAX
15h 39m
SJC
SEA

05/21/25

STL
Alaska Airlines Logo
Alaska Airlines

06/11/25

STL
8h 23m
SEA
SFO

06/11/25

LAX
$526
Free cancellation within 83 hours of booking

Top Deals on flights from Los Angeles to St. Louis

Los Angeles, US (LAX) - St. Louis, US (STL)

Frontier Airlines Logo
Frontier Airlines

May 17

ONT
9h
DEN

May 17

STL

as low as

$103

Los Angeles, US (LAX) - St. Louis, US (STL)

Frontier Airlines Logo
Frontier Airlines

May 25

ONT
7h 40m
LAS

May 25

STL

as low as

$113

Los Angeles, US (LAX) - St. Louis, US (STL)

Delta Air Lines Logo
Delta Air Lines

May 24

ONT
11h 20m
ATL

May 24

STL

as low as

$153

Los Angeles, US (LAX) - St. Louis, US (STL)

 Logo

Jun 6

LAX
11h 30m
MSP

Jun 7

STL

as low as

$153

Los Angeles, US (LAX) - St. Louis, US (STL)

Delta Air Lines Logo
Delta Air Lines

May 27

ONT
7h 36m
SLC

May 28

STL

as low as

$153

Los Angeles, US (LAX) - St. Louis, US (STL)

Hawaiian Airlines Logo
Hawaiian Airlines

May 28

ONT
12h 13m
SEA

May 29

STL

as low as

$167

Los Angeles, US (LAX) - St. Louis, US (STL)

Alaska Airlines Logo
Alaska Airlines

Jun 3

LAX
10h 6m
SEA

Jun 4

STL

as low as

$187

Los Angeles, US (LAX) - St. Louis, US (STL)

American Airlines Logo
American Airlines

May 20

LAX
5h 35m
Direct

May 20

STL

as low as

$197

Los Angeles, US (LAX) - St. Louis, US (STL)

American Airlines Logo
American Airlines

Jun 3

ONT
10h 16m
CLT

Jun 4

STL

as low as

$198

Los Angeles, US (LAX) - St. Louis, US (STL)

United Airlines Logo
United Airlines

May 25

ONT
8h 30m
ORD

May 25

STL

as low as

$198

Los Angeles, US (LAX) - St. Louis, US (STL)

American Airlines Logo
American Airlines

Jun 4

ONT
9h 19m
DFW

Jun 5

STL

as low as

$198

Los Angeles, US (LAX) - St. Louis, US (STL)

United Airlines Logo
United Airlines

May 24

ONT
7h 15m
DEN

May 24

STL

as low as

$198
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