$160+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Aug 10 — Aug 171
Round-trip
1 adult, Economy
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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 Friday and return on a Thursday
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 July 11, 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 July 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Thu 8/68:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Sun 8/99:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 7/10![Frontier logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/27:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 8/116:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 7/10![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Tue 7/288:08 pm
STL
- LAX
1 stop14h 47m
Frontier
Fri 8/1410:15 am
LAX
- STL
2 stops31h 08m
Frontier
Deal found 7/10![Frontier logo]()
$313
This CheapOair deal was found by Cheapflights users on 7/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Sat 8/296:55 am
LAX
- STL
1 stop8h 55m
Frontier
Deal found 7/9![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/27:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Wed 8/56:25 pm
LAX
- STL
1 stop18h 31m
Frontier
Deal found 7/10![Frontier logo]()
$316
This Expedia deal was found by Cheapflights users on 7/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Tue 8/412:07 pm
LAX
- STL
1 stop27h 58m
Frontier
Deal found 7/11![Frontier logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Sat 8/18:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Thu 8/136:25 pm
LAX
- STL
2 stops36h 32m
Frontier
Deal found 7/9![Frontier logo]()
$318
This Southwest deal was found by Cheapflights users on 7/6. 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.
Fri 9/259:05 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 10/56:40 am
LAX
- STL
Nonstop3h 30m
Southwest
Deal found 7/6![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 7/10. 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.
Fri 8/76:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Fri 8/147:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/10![Southwest logo]()
$321
This CheapOair deal was found by Cheapflights users on 7/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:08 pm
STL
- LAX
1 stop14h 47m
Frontier
Tue 8/46:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 7/9![Frontier logo]()
$322
This Trip.com deal was found by Cheapflights users on 7/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- LAX
1 stop6h 13m
Frontier
Mon 8/316:55 am
LAX
- STL
1 stop8h 55m
Frontier
Deal found 7/10![Frontier logo]()
$324
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 July 11, 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 July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/10. 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.
Tue 8/46:30 am
STL
- LAX
1 stop8h 05m
Southwest
Thu 8/67:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/10![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 7/8. 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.
Thu 8/279:05 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sun 8/306:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/8![Southwest logo]()
$361
This Southwest deal was found by Cheapflights users on 7/8. 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.
Fri 8/76:05 pm
STL
- LAX
1 stop6h 20m
Southwest
Fri 8/147:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/8![Southwest logo]()
$371
This Southwest deal was found by Cheapflights users on 7/7. 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.
Fri 8/212:20 pm
STL
- LAX
2 stops7h 00m
Southwest
Thu 8/2712:50 am
LAX
- STL
1 stop6h 55m
Southwest
Deal found 7/7![Southwest logo]()
$386
This Southwest deal was found by Cheapflights users on 7/10. 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.
Mon 8/38:10 am
STL
- LAX
1 stop8h 00m
Southwest
Thu 8/67:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/10![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 7/6. 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.
Thu 8/136:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Sun 8/236:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/6![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 7/6. 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.
Fri 9/256:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Sun 9/276:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/6![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 7/8. 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.
Wed 7/299:20 pm
STL
- LAX
Nonstop3h 55m
Southwest
Thu 7/306:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/8![Southwest logo]()
$506
This Southwest deal was found by Cheapflights users on 7/7. 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.
Wed 7/229:20 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 7/275:10 am
LAX
- STL
1 stop7h 00m
Southwest
Deal found 7/7![Southwest logo]()
$515
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 7/309:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 8/311:55 pm
LAX
- STL
1 stop7h 40m
Southwest
Deal found 7/7![Southwest logo]()
$539
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 7/166:30 pm
STL
- LAX
1 stop7h 25m
Southwest
Mon 7/206:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/7![Southwest logo]()
$547
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated July 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Tue 7/288:08 pm
STL
- LAX
1 stop14h 47m
Frontier
Fri 8/1410:15 am
LAX
- STL
2 stops31h 08m
Frontier
Deal found 7/10![Frontier logo]()
$313
This CheapOair deal was found by Cheapflights users on 7/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:08 pm
STL
- LAX
1 stop14h 47m
Frontier
Tue 8/46:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 7/9![Frontier logo]()
$322
This Expedia deal was found by Cheapflights users on 7/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Tue 8/412:07 pm
LAX
- STL
1 stop27h 58m
Frontier
Deal found 7/11![Frontier logo]()
$317
This CheapOair deal was found by Cheapflights users on 7/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Sat 8/296:55 am
LAX
- STL
1 stop8h 55m
Frontier
Deal found 7/9![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Sat 8/18:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Thu 8/136:25 pm
LAX
- STL
2 stops36h 32m
Frontier
Deal found 7/9![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/27:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 8/116:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 7/10![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/27:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Wed 8/56:25 pm
LAX
- STL
1 stop18h 31m
Frontier
Deal found 7/10![Frontier logo]()
$316
This Expedia deal was found by Cheapflights users on 7/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Mon 8/106:45 pm
LAX
- STL
1 stop22h 38m
Frontier
Deal found 7/6![Frontier logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Thu 8/68:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Sun 8/99:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 7/10![Frontier logo]()
$309
This Southwest deal was found by Cheapflights users on 7/10. 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.
Fri 8/76:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Fri 8/77:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 7/10![Southwest logo]()
$321
This Trip.com deal was found by Cheapflights users on 7/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- LAX
1 stop6h 13m
Frontier
Mon 8/316:55 am
LAX
- STL
1 stop8h 55m
Frontier
Deal found 7/10![Frontier logo]()
$324
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 July 11, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This Trip.com deal was found by Cheapflights users on 7/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Deal found 7/10![Frontier logo]()
$160
This American Airlines deal was found by Cheapflights users on 7/8. 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.
Tue 8/46:37 am
STL
- LAX
Nonstop4h 09m
American Airlines
Deal found 7/8![American Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Fri 8/78:08 pm
STL
- LAX
2 stops17h 14m
Frontier
Deal found 7/10![Frontier logo]()
$162
This Trip.com deal was found by Cheapflights users on 7/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:19 pm
STL
- LAX
1 stop26h 50m
Frontier
Deal found 7/11![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 7/7. 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.
Tue 7/148:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 7/7![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 7/7. 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.
Sat 7/188:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 7/7![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 7/8. 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.
Tue 7/217:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Deal found 7/8![Frontier logo]()
$170
This Priceline deal was found by Cheapflights users on 7/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 7/10![Frontier logo]()
$174
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 8/56:00 am
STL
- LAX
Nonstop4h 10m
American Airlines
Deal found 7/10![American Airlines logo]()
$175
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 July 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $309 (Kiwi.com) |
One-way from | $160 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $416 |
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 July 11, 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
Tue 8/4
6:30 am-12:35 pm
1 stop8h 05m
Los Angeles
Thu 8/6
7:10 pm-12:45 am
Nonstop3h 35m
$343
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 8/27
9:05 pm-11:00 pm
Nonstop3h 55m
Los Angeles
Sun 8/30
6:45 am-12:20 pm
Nonstop3h 35m
$361
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 8/7
6:05 pm-10:25 pm
1 stop6h 20m
Los Angeles
Fri 8/14
7:10 pm-12:45 am
Nonstop3h 35m
$371
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 8/21
2:20 pm-7:20 pm
2 stops7h 00m
Los Angeles
Thu 8/27
12:50 am-9:45 am
1 stop6h 55m
$386
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 8/3
8:10 am-2:10 pm
1 stop8h 00m
Los Angeles
Thu 8/6
7:10 pm-12:45 am
Nonstop3h 35m
$399
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 8/13
6:25 am-8:20 am
Nonstop3h 55m
Los Angeles
Sun 8/23
6:45 am-12:20 pm
Nonstop3h 35m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 9/25
6:25 am-8:20 am
Nonstop3h 55m
Los Angeles
Sun 9/27
6:45 am-12:20 pm
Nonstop3h 35m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/29
9:20 pm-11:15 pm
Nonstop3h 55m
Los Angeles
Thu 7/30
6:35 am-12:10 pm
Nonstop3h 35m
$506
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/22
9:20 pm-11:15 pm
Nonstop3h 55m
Los Angeles
Mon 7/27
5:10 am-2:10 pm
1 stop7h 00m
$515
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 7/30
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Mon 8/3
11:55 pm-9:35 am
1 stop7h 40m
$539
Showing 1-10 of 20 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 July 11, 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 13% on your trip compared to booking a flight at noon.
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 July 11, 2026.
The most flights from STL to P4S are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).
How much does it cost to fly round-trip from St. Louis to Pasadena?
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 Tuesday mornings 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.
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 July 11, 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.
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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.
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Alternative routes for St. Louis to Pasadena
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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 July 11, 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 July 11, 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 7 airlines flying from St. Louis to Pasadena
Discover the top 7 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 July 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$253 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$201 | Average$440 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$263 | Average$431 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$385 | Average$512 | FlexibilityNo cancel fee | On-time75% |