
$152 Cheap Frontier Airlines flights Ontario (ONT) to St. Louis (STL)
Prices were available within the past 7 days and start at $152 for one-way flights and $245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 21 - Sat, Oct 25
ONT
Ontario
STL
St. Louis
$245 Roundtrip, found 1 day ago
$245
Roundtrip
found 1 day ago

Fri, Sep 12 - Mon, Sep 15
ONT
Ontario
STL
St. Louis
$270 Roundtrip, found 23 hours ago
$270
Roundtrip
found 23 hours ago

Fri, Sep 12 - Mon, Sep 15
ONT
Ontario
STL
St. Louis
$281 Roundtrip, found 23 hours ago
$281
Roundtrip
found 23 hours ago

Sun, Oct 19 - Sat, Oct 25
ONT
Ontario
STL
St. Louis
$286 Roundtrip, found 1 day ago
$286
Roundtrip
found 1 day ago

Sun, Oct 19 - Tue, Oct 28
ONT
Ontario
STL
St. Louis
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago

Tue, Oct 21 - Sat, Oct 25
ONT
Ontario
STL
St. Louis
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Origin airport | Los Angeles - Ontario Intl. |
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United |
Popular airline | Frontier Airlines |
Distance | 2467 km |
Average flight time | 5 hours 40 mins |
Most Popular Frontier Airlines Routes from Ontario
Most Popular Frontier Airlines Routes from St. Louis
- Norfolk to Orlando (ORF - MCO)
- Orlando to Philadelphia (MCO - PHL)
- Dallas to New York (DFW - LGA)
- Baltimore to Tampa (BWI - TPA)
- Tampa to Charlotte (TPA - CLT)
- Orlando to Las Vegas (MCO - LAS)
- Portland to Los Angeles (PDX - LAX)
- Seattle Paine Field Intl. Airport to Phoenix (PAE - PHX)
- Nashville to Seattle (BNA - SEA)
- Orlando to Trenton (MCO - TTN)
Popular Domestic Routes in Lambert-St. Louis Intl.
- Tampa to Charlotte (TPA - CLT)
- Nashville to Seattle (BNA - SEA)
- Portland to Ontario (PDX - ONT)
- Dallas to New York (DFW - JFK)
- Norfolk to Orlando (ORF - MCO)
- Orlando to Las Vegas (MCO - LAS)
- New York to Atlanta (JFK - ATL)
- Portland to Los Angeles (PDX - LAX)
- Sacramento to San Antonio (SMF - SAT)
- Sacramento to San Antonio (SMF - SAT)