St Louis to Los Angeles STL → LAX
Lambert-St. Louis International Airport (STL) → Los Angeles International Airport (LAX)
The cheapest one-way found recently is $207 with Frontier Airlines, 28 Oct, found yesterday.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $168 to $204.
Cheapest one-way found recently
$207
28 Oct · Frontier Airlines
Lambert-St. Louis International Airport (STL) → Los Angeles International Airport (LAX)
Leaves 4:18 p.m. · 10 h 5 min trip
1 stop
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$207 28 Octfound yesterdayOpen this trip
$136 3 Decfound 6 days agoOpen this trip
What have prices looked like?
Over 21 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $136 to $232.
21 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 28 Oct to 3 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 28 Oct to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 28 Oct | $207 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Los Angeles International Airport (LAX) | 1 stop | found yesterday | Open this trip |
| 20 Nov | $200 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Los Angeles International Airport (LAX) | 1 stop | found 2 days ago | Open this trip |
| 3 Dec | $136 | United Airlines | Lambert-St. Louis International Airport (STL) → Los Angeles International Airport (LAX) | 1 stop | found 6 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $136.
Airlines on the cheapest dates: Frontier Airlines, United Airlines.
Premium cabin fares from St Louis to Los Angeles
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 28 Oct in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for St Louis to Los Angeles?
One-way
Not enough history yet: in 21 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
St Louis → Ontario
56 km from Los Angeles
$366
18 Dec – 20 Dec · STL → ONT · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
St Louis → Ontario
56 km from Los Angeles
$159
$48 less than flying to Los Angeles
18 Dec · STL → ONT · 1 stop
found 2 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest one-way found recently is for 28 Oct. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work