$133+ Cheap flights from St. Louis (STL) to Pasadena, CA
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
may. 26 — jun. 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Pasadena with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Pasadena are usually found in September or October, booked 58 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap flight deals from St. Louis to Pasadena
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to PasadenaExplore the most affordable flight options available from St. Louis to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 26, 2026.
Explore the most affordable flight options available from St. Louis to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 26, 2026.
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/186:00 am
STL
- LAX
Nonstop4h 10m
American Airlines
mar. 8/255:13 pm
LAX
- STL
Nonstop3h 42m
American Airlines
Deal found 4/21![American Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/19:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
mar. 6/95:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/23![Southwest logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/119:18 pm
STL
- LAX
2 stops13h 37m
Multiple Airlines
mar. 5/196:30 am
LAX
- STL
1 stop9h 36m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/258:08 pm
STL
- LAX
1 stop30h 08m
Frontier
lun. 6/110:05 pm
LAX
- STL
2 stops14h 43m
Frontier
Deal found 4/25![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/196:51 pm
STL
- LAX
1 stop16h 12m
Frontier
dom. 5/243:28 pm
LAX
- STL
1 stop15h 27m
Frontier
Deal found 4/24![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/49:06 pm
STL
- LAX
1 stop13h 57m
Frontier
mié. 6/102:00 pm
LAX
- STL
2 stops26h 18m
Frontier
Deal found 4/24![Frontier logo]()
$279
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/88:08 pm
STL
- LAX
1 stop6h 08m
Frontier
dom. 5/245:45 am
LAX
- STL
1 stop6h 46m
Frontier
Deal found 4/21![Frontier logo]()
$280
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/73:33 pm
STL
- LAX
1 stop9h 02m
Frontier
lun. 5/1112:08 pm
LAX
- STL
1 stop6h 15m
Frontier
Deal found 4/21![Frontier logo]()
$281
This Super.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/278:17 pm
STL
- LAX
1 stop21h 03m
Frontier
mié. 4/295:11 pm
LAX
- STL
1 stop25h 49m
Frontier
Deal found 4/23![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/28:08 pm
STL
- LAX
1 stop14h 47m
Multiple Airlines
mié. 6/1712:02 pm
LAX
- STL
2 stops27h 28m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$284
This Frontier deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/88:08 pm
STL
- LAX
1 stop6h 08m
Frontier
dom. 5/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 4/25![Frontier logo]()
$285
Best flights from St. Louis to PasadenaDiscover carefully curated flight deals from St. Louis to Pasadena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 26, 2026.
Discover carefully curated flight deals from St. Louis to Pasadena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 26, 2026.
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/19:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
mar. 6/93:20 pm
LAX
- STL
1 stop6h 25m
Southwest
Deal found 4/22![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/217:00 am
STL
- LAX
1 stop7h 34m
Delta
mar. 5/2611:59 pm
LAX
- STL
1 stop6h 47m
Delta
Deal found 4/22![Delta logo]()
$397
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/58:30 am
STL
- LAX
Nonstop3h 55m
Southwest
lun. 9/77:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 4/23![Southwest logo]()
$346
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/28:35 am
STL
- LAX
1 stop7h 00m
Southwest
sáb. 6/65:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/24![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/59:00 pm
STL
- LAX
Nonstop3h 55m
Southwest
dom. 8/911:15 pm
LAX
- STL
1 stop6h 20m
Southwest
Deal found 4/25![Southwest logo]()
$398
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/292:20 pm
STL
- LAX
1 stop7h 25m
Southwest
dom. 8/25:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/25![Southwest logo]()
$398
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/309:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
lun. 8/34:20 pm
LAX
- STL
1 stop5h 35m
Southwest
Deal found 4/24![Southwest logo]()
$413
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/39:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
vie. 7/106:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 4/25![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/26:20 am
STL
- LAX
Nonstop4h 05m
Southwest
vie. 10/97:30 am
LAX
- STL
1 stop6h 05m
Southwest
Deal found 4/22![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/317:35 pm
STL
- LAX
1 stop6h 35m
Southwest
dom. 6/75:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/24![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/198:10 am
STL
- LAX
1 stop8h 00m
Southwest
dom. 7/55:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/23![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/82:15 pm
STL
- LAX
2 stops7h 30m
Southwest
sáb. 6/133:45 pm
LAX
- STL
2 stops7h 15m
Southwest
Deal found 4/21![Southwest logo]()
$449
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated abril 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated abril 26, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/278:17 pm
STL
- LAX
1 stop21h 03m
Frontier
mié. 4/294:17 pm
LAX
- STL
1 stop25h 04m
Frontier
Deal found 4/23![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/73:33 pm
STL
- LAX
1 stop9h 02m
Frontier
lun. 5/1112:08 pm
LAX
- STL
1 stop6h 15m
Frontier
Deal found 4/21![Frontier logo]()
$281
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/88:08 pm
STL
- LAX
1 stop6h 08m
Frontier
dom. 5/245:45 am
LAX
- STL
1 stop6h 46m
Frontier
Deal found 4/21![Frontier logo]()
$280
This Frontier deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/88:08 pm
STL
- LAX
1 stop6h 08m
Frontier
dom. 5/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 4/25![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/119:18 pm
STL
- LAX
2 stops13h 37m
Multiple Airlines
mié. 5/136:30 am
LAX
- STL
1 stop9h 36m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/136:51 pm
STL
- LAX
1 stop16h 12m
Multiple Airlines
dom. 5/1712:02 pm
LAX
- STL
2 stops29h 21m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/136:51 pm
STL
- LAX
1 stop16h 12m
Frontier
lun. 5/186:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 4/22![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/196:51 pm
STL
- LAX
1 stop16h 12m
Frontier
dom. 5/243:28 pm
LAX
- STL
1 stop15h 27m
Frontier
Deal found 4/24![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/218:08 pm
STL
- LAX
1 stop21h 28m
Frontier
mar. 5/264:31 pm
LAX
- STL
1 stop24h 52m
Frontier
Deal found 4/23![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/258:08 pm
STL
- LAX
1 stop30h 08m
Frontier
lun. 6/110:05 pm
LAX
- STL
2 stops14h 43m
Frontier
Deal found 4/25![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/313:30 pm
STL
- LAX
1 stop10h 29m
Frontier
vie. 6/126:00 am
LAX
- STL
1 stop10h 18m
Frontier
Deal found 4/22![Frontier logo]()
$290
One-way flights from St. Louis to PasadenaSearch for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated abril 26, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated abril 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/248:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 4/23![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/126:51 pm
STL
- LAX
2 stops28h 19m
Frontier
Deal found 4/22![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/294:59 pm
STL
- LAX
1 stop28h 07m
Frontier
Deal found 4/24![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/206:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Deal found 4/23![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/187:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Deal found 4/21![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/167:08 pm
STL
- LAX
2 stops15h 55m
Frontier
Deal found 4/21![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/217:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Deal found 4/21![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/309:55 pm
STL
- LAX
1 stop12h 23m
Frontier
Deal found 4/25![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/79:06 pm
STL
- LAX
2 stops29h 10m
Frontier
Deal found 4/23![Frontier logo]()
$150
Find flight deals from St. Louis to Pasadena
Keep the following information in mind while searching for St. Louis to Pasadena flight deals. Data was last updated abril 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $272 (American Airlines) |
One-way from | $133 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $418 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Pasadena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 26, 2026.
Use the filters below to find and compare flights from St. Louis to Pasadena that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
lun. 6/1
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
mar. 6/9
3:20 pm-11:45 pm
1 stop6h 25m
$283
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
sáb. 9/5
8:30 am-10:25 am
Nonstop3h 55m
Los Angeles
lun. 9/7
7:10 pm-12:45 am
Nonstop3h 35m
$346
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
mar. 6/2
8:35 am-1:35 pm
1 stop7h 00m
Los Angeles
sáb. 6/6
5:00 am-10:40 am
Nonstop3h 40m
$375
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
jue. 5/21
7:00 am-12:34 pm
1 stop7h 34m
Los Angeles
mar. 5/26
11:59 pm-8:46 am
1 stop6h 47m
$397
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
mié. 8/5
9:00 pm-10:55 pm
Nonstop3h 55m
Los Angeles
dom. 8/9
11:15 pm-7:35 am
1 stop6h 20m
$398
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
mié. 7/29
2:20 pm-7:45 pm
1 stop7h 25m
Los Angeles
dom. 8/2
5:30 am-11:10 am
Nonstop3h 40m
$398
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
jue. 7/30
9:55 pm-11:45 pm
Nonstop3h 50m
Los Angeles
lun. 8/3
4:20 pm-11:55 pm
1 stop5h 35m
$413
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
vie. 7/3
9:55 pm-11:45 pm
Nonstop3h 50m
Los Angeles
vie. 7/10
6:35 am-12:10 pm
Nonstop3h 35m
$419
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
vie. 10/2
6:20 am-8:25 am
Nonstop4h 05m
Los Angeles
vie. 10/9
7:30 am-3:35 pm
1 stop6h 05m
$444
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
dom. 5/31
7:35 pm-12:10 am
1 stop6h 35m
Los Angeles
dom. 6/7
5:30 am-11:10 am
Nonstop3h 40m
$444
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Pasadena
Have a flexible travel schedule? Discover the best time to fly to Pasadena from St. Louis with our price prediction graph.
STL-LAX
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Pasadena
STL-P4S
STL-LAX
What is the cheapest time of day to fly from STL to P4S?
Find hourly flight availability from St. Louis to Pasadena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 26, 2026.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Pasadena in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from St. Louis to Pasadena?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Pasadena. Price data was last updated on February 17, 2026.
Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from St. Louis to Pasadena
Explore weekly flight availability from St. Louis to Pasadena. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 26, 2026.
The most flights from STL to P4S are scheduled on a Friday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from St. Louis to Pasadena?
Reviews of airlines servicing Pasadena
Get insights into the airlines that provide service to Pasadena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pasadena. Reviews last updated abril 26, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from St. Louis to Pasadena by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Pasadena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from St. Louis
Popular flights
Top destinations
Alternative routes for St. Louis to Pasadena
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pasadena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Pasadena by cabin class
Find flights from St. Louis to Pasadena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Pasadena flights
Browse other St. Louis and Pasadena flight options. Last updated on abril 26, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on abril 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Pasadena flights
Consider these flights traveling from St. Louis to Pasadena.
Top 8 airlines flying from St. Louis to Pasadena
Discover the top 8 airlines that operate flights from St. Louis to Pasadena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$235 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$228 | Average$368 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$428 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$273 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$404 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$304 | Average$372 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$550 | FlexibilityNo cancel fee | On-time75% |