$143+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jul 12 — Jul 191
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 Wednesday and return on a Wednesday
Cheap flight deals from St. Louis to Pasadena
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Best
Last-minute
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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 June 12, 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 June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Sat 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Tue 7/76:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/10![Frontier logo]()
$280
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier 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
Sat 8/86:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/10![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/237:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Mon 7/276:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/12![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 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
2 stops28h 49m
Frontier
Tue 8/46:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/8![Frontier logo]()
$283
This Travelocity deal was found by Cheapflights users on 6/7. 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 Travelocity 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
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/7![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 7/1410:10 am
LAX
- STL
2 stops54h 05m
Frontier
Deal found 6/11![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 6/237:46 pm
STL
- LAX
1 stop15h 39m
Frontier
Tue 6/3012:14 pm
LAX
- STL
1 stop28h 37m
Frontier
Deal found 6/9![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:10 pm
STL
- LAX
2 stops43h 51m
Frontier
Wed 7/2212:07 pm
LAX
- STL
1 stop28h 08m
Frontier
Deal found 6/8![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/11![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Sun 7/266:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/9![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Thu 7/239:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 6/11![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:08 pm
STL
- LAX
2 stops17h 21m
Frontier
Thu 8/206:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/7![Frontier logo]()
$291
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 June 12, 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 June 12, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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 8/76:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Tue 8/111:25 pm
LAX
- STL
1 stop7h 10m
Southwest
Deal found 6/8![Southwest logo]()
$335
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:30 am
STL
- LAX
1 stop6h 35m
Delta
Tue 12/88:30 am
LAX
- STL
1 stop6h 24m
Delta
Deal found 6/10![Delta logo]()
$382
This Southwest deal was found by Cheapflights users on 6/7. 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 10/159:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sat 10/175:40 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/7![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:45 pm
STL
- LAX
Nonstop4h 00m
Southwest
Tue 7/145:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/11![Southwest logo]()
$418
This Southwest deal was found by Cheapflights users on 6/7. 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.
Tue 7/149:20 pm
STL
- LAX
Nonstop3h 55m
Southwest
Thu 7/164:55 pm
LAX
- STL
1 stop7h 00m
Southwest
Deal found 6/7![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 6/7. 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
Sun 7/265:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/7![Southwest logo]()
$434
This Southwest deal was found by Cheapflights users on 6/7. 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 10/239:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Fri 10/306:10 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/7![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 6/7. 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 10/96:20 am
STL
- LAX
Nonstop4h 05m
Southwest
Sat 10/1012:55 am
LAX
- STL
1 stop6h 35m
Southwest
Deal found 6/7![Southwest logo]()
$453
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/122:15 pm
STL
- LAX
1 stop8h 00m
Southwest
Thu 7/161:30 pm
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/9![Southwest logo]()
$453
This Southwest deal was found by Cheapflights users on 6/10. 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 11/2712:30 pm
STL
- LAX
1 stop7h 25m
Southwest
Wed 12/96:40 am
LAX
- STL
1 stop6h 40m
Southwest
Deal found 6/10![Southwest logo]()
$458
This Southwest deal was found by Cheapflights users on 6/7. 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 7/156:10 am
STL
- LAX
1 stop5h 25m
Southwest
Wed 7/1512:50 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/7![Southwest logo]()
$463
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:10 am
STL
- LAX
Nonstop3h 55m
Southwest
Tue 7/145:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/11![Southwest logo]()
$465
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated June 12, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 6/237:46 pm
STL
- LAX
1 stop15h 39m
Frontier
Tue 6/3012:14 pm
LAX
- STL
1 stop28h 37m
Frontier
Deal found 6/9![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Sat 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Tue 7/76:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/10![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- LAX
2 stops18h 53m
Frontier
Wed 7/156:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/11![Frontier logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- LAX
2 stops25h 55m
Frontier
Tue 7/146:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/11![Frontier logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 7/1410:10 am
LAX
- STL
2 stops54h 05m
Frontier
Deal found 6/11![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/11![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:10 pm
STL
- LAX
2 stops43h 51m
Frontier
Wed 7/2212:07 pm
LAX
- STL
1 stop28h 08m
Frontier
Deal found 6/8![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/11![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Thu 7/239:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 6/11![Frontier logo]()
$290
This Travelocity deal was found by Cheapflights users on 6/7. 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 Travelocity 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
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/7![Frontier logo]()
$284
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Sun 7/266:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/9![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/237:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Mon 7/276:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/12![Frontier logo]()
$282
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 June 12, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This Expedia deal was found by Cheapflights users on 6/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:08 pm
STL
- LAX
1 stop22h 42m
Frontier
Deal found 6/8![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.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 6/7![Frontier logo]()
$144
This Travelocity deal was found by Cheapflights users on 6/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Deal found 6/10![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:34 pm
STL
- LAX
1 stop24h 14m
Frontier
Deal found 6/11![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 9/86:58 pm
STL
- LAX
1 stop17h 54m
Frontier
Deal found 6/9![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:08 pm
STL
- LAX
1 stop14h 50m
Frontier
Deal found 6/11![Frontier logo]()
$150
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 6/10![Frontier logo]()
$152
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 6/9![Frontier logo]()
$153
This Super.com deal was found by Cheapflights users on 6/7. 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 6/308:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 6/7![Frontier logo]()
$154
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 June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $280 (Kiwi.com) |
One-way from | $143 (Expedia) |
Popular in | May |
Cheapest in | September |
Average price | $437 |
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 June 12, 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
Fri 8/7
6:25 am-8:20 am
Nonstop3h 55m
Los Angeles
Tue 8/11
1:25 pm-10:35 pm
1 stop7h 10m
$335
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 10/15
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Sat 10/17
5:40 am-11:15 am
Nonstop3h 35m
$373
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 12/6
6:30 am-11:05 am
1 stop6h 35m
Los Angeles
Tue 12/8
8:30 am-4:54 pm
1 stop6h 24m
$382
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 7/11
8:45 pm-10:45 pm
Nonstop4h 00m
Los Angeles
Tue 7/14
5:00 am-10:40 am
Nonstop3h 40m
$418
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 7/14
9:20 pm-11:15 pm
Nonstop3h 55m
Los Angeles
Thu 7/16
4:55 pm-1:55 am
1 stop7h 00m
$428
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/22
9:20 pm-11:15 pm
Nonstop3h 55m
Los Angeles
Sun 7/26
5:30 am-11:10 am
Nonstop3h 40m
$434
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 10/23
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Fri 10/30
6:10 am-11:45 am
Nonstop3h 35m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 10/9
6:20 am-8:25 am
Nonstop4h 05m
Los Angeles
Sat 10/10
12:55 am-9:30 am
1 stop6h 35m
$453
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 7/12
2:15 pm-8:15 pm
1 stop8h 00m
Los Angeles
Thu 7/16
1:30 pm-7:10 pm
Nonstop3h 40m
$453
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 11/27
12:30 pm-5:55 pm
1 stop7h 25m
Los Angeles
Wed 12/9
6:40 am-3:20 pm
1 stop6h 40m
$458
Showing 1-10 of 19 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 June 12, 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 15% 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 June 12, 2026.
The most flights from STL to P4S are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, 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 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.
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 June 12, 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.
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
7.9
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
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.
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.
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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 June 12, 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 June 12, 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 June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$244 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$201 | Average$440 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$367 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$369 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$427 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$531 | FlexibilityNo cancel fee | On-time75% |