$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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jun 7 — Jun 141
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 May 8, 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 May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Mon 6/88:59 pm
LAX
- STL
2 stops18h 31m
Frontier
Deal found 5/5![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 5/5. 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.
Thu 5/288:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Sun 6/76:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/238:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Wed 6/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 5/288:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/7![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 9/38:21 pm
STL
- LAX
1 stop15h 04m
Frontier
Mon 9/1411:03 am
LAX
- STL
1 stop6h 12m
Frontier
Deal found 5/7![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 5/7. 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.
Wed 5/278:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Thu 5/285:45 am
LAX
- STL
1 stop6h 46m
Frontier
Deal found 5/7![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Sat 7/47:38 pm
STL
- LAX
1 stop6h 33m
Frontier
Wed 7/81:53 pm
LAX
- STL
2 stops25h 44m
Frontier
Deal found 5/7![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/96:03 pm
STL
- LAX
1 stop17h 22m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/4![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Wed 5/278:08 pm
STL
- LAX
1 stop14h 27m
Frontier
Mon 6/18:59 pm
LAX
- STL
1 stop20h 24m
Frontier
Deal found 5/7![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/142:56 pm
STL
- LAX
1 stop20h 29m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/5![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/19:21 pm
STL
- LAX
1 stop13h 42m
Frontier
Mon 6/88:27 pm
LAX
- STL
2 stops19h 03m
Frontier
Deal found 5/7![Frontier logo]()
$279
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 May 8, 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 May 8, 2026.
This Southwest deal was found by Cheapflights users on 5/6. 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 5/299:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Sat 6/65:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/6![Southwest logo]()
$383
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/245:00 pm
STL
- LAX
1 stop6h 50m
Delta
Wed 6/175:35 am
LAX
- STL
1 stop6h 01m
Delta
Deal found 5/7![Delta logo]()
$400
This Southwest deal was found by Cheapflights users on 5/7. 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 8/206:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Sun 8/2312:50 am
LAX
- STL
1 stop6h 30m
Southwest
Deal found 5/7![Southwest logo]()
$403
This Southwest deal was found by Cheapflights users on 5/4. 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 5/266:35 am
STL
- LAX
2 stops8h 45m
Southwest
Fri 5/295:00 pm
LAX
- STL
1 stop5h 15m
Southwest
Deal found 5/4![Southwest logo]()
$416
This Delta deal was found by Cheapflights users on 5/3. 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.
Thu 6/42:27 pm
STL
- LAX
2 stops10h 15m
Delta
Wed 6/106:25 am
LAX
- STL
1 stop8h 21m
Delta
Deal found 5/3![Delta logo]()
$510
This Southwest deal was found by Cheapflights users on 5/5. 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 8/411:55 am
STL
- LAX
2 stops7h 50m
Southwest
Thu 8/68:35 am
LAX
- STL
2 stops7h 25m
Southwest
Deal found 5/5![Southwest logo]()
$440
This Southwest deal was found by Cheapflights users on 5/6. 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 10/26:30 am
STL
- LAX
2 stops7h 25m
Southwest
Mon 10/57:35 am
LAX
- STL
1 stop5h 55m
Southwest
Deal found 5/6![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 5/6. 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.
Sun 7/1910:50 pm
STL
- LAX
Nonstop3h 50m
Southwest
Sun 7/265:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/6![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 5/4. 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
Nonstop3h 55m
Southwest
Sat 7/185:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/4![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 5/7. 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 6/99:20 pm
STL
- LAX
Nonstop3h 50m
Southwest
Sun 6/145:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/7![Southwest logo]()
$480
This Southwest deal was found by Cheapflights users on 5/6. 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.
Wed 6/176:15 pm
STL
- LAX
1 stop5h 45m
Southwest
Mon 6/296:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 5/6![Southwest logo]()
$490
This Southwest deal was found by Cheapflights users on 5/4. 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 6/129:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
Mon 6/156:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 5/4![Southwest logo]()
$490
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated May 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated May 8, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/5. 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 5/196:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Fri 5/226:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/238:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Wed 6/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/258:08 pm
STL
- LAX
1 stop14h 47m
Frontier
Sat 6/66:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 5/7. 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.
Wed 5/278:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Thu 5/285:45 am
LAX
- STL
1 stop6h 46m
Frontier
Deal found 5/7![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Wed 5/278:08 pm
STL
- LAX
1 stop14h 27m
Frontier
Mon 6/18:59 pm
LAX
- STL
1 stop20h 24m
Frontier
Deal found 5/7![Frontier logo]()
$277
This Frontier deal was found by Cheapflights users on 5/5. 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.
Thu 5/288:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Sun 6/76:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 5/288:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/7![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Mon 6/88:59 pm
LAX
- STL
2 stops18h 31m
Frontier
Deal found 5/5![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/19:21 pm
STL
- LAX
1 stop13h 42m
Frontier
Mon 6/88:27 pm
LAX
- STL
2 stops19h 03m
Frontier
Deal found 5/7![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/96:03 pm
STL
- LAX
1 stop17h 22m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/4![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/142:56 pm
STL
- LAX
1 stop20h 29m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/5![Frontier logo]()
$278
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 May 8, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 5/6![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/255:27 pm
STL
- LAX
2 stops53h 43m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:51 pm
STL
- LAX
2 stops15h 44m
Frontier
Deal found 5/6![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Tue 7/216:33 pm
STL
- LAX
2 stops25h 39m
Frontier
Deal found 5/7![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 7/35:06 pm
STL
- LAX
2 stops32h 43m
Frontier
Deal found 5/5![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:32 pm
STL
- LAX
1 stop16h 48m
Frontier
Deal found 5/6![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/229:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Deal found 5/4![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 8/104:52 pm
STL
- LAX
2 stops42h 32m
Frontier
Deal found 5/7![Frontier logo]()
$142
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/318:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Deal found 5/8![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/196:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Deal found 5/4![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 5/5. 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.
Thu 6/257:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Deal found 5/5![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/168:08 pm
STL
- LAX
2 stops15h 17m
Frontier
Deal found 5/4![Frontier logo]()
$146
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 May 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Kiwi.com) |
One-way from | $133 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $422 |
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 May 8, 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 5/29
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Sat 6/6
5:00 am-10:40 am
Nonstop3h 40m
$383
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 5/24
5:00 pm-9:50 pm
1 stop6h 50m
Los Angeles
Wed 6/17
5:35 am-1:36 pm
1 stop6h 01m
$400
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 8/20
6:25 am-8:20 am
Nonstop3h 55m
Los Angeles
Sun 8/23
12:50 am-9:20 am
1 stop6h 30m
$403
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 5/26
6:35 am-1:20 pm
2 stops8h 45m
Los Angeles
Fri 5/29
5:00 pm-12:15 am
1 stop5h 15m
$416
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 8/4
11:55 am-5:45 pm
2 stops7h 50m
Los Angeles
Thu 8/6
8:35 am-6:00 pm
2 stops7h 25m
$440
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 10/2
6:30 am-11:55 am
2 stops7h 25m
Los Angeles
Mon 10/5
7:35 am-3:30 pm
1 stop5h 55m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 7/19
10:50 pm-12:40 am
Nonstop3h 50m
Los Angeles
Sun 7/26
5:30 am-11:10 am
Nonstop3h 40m
$454
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 7/11
8:45 pm-10:40 pm
Nonstop3h 55m
Los Angeles
Sat 7/18
5:00 am-10:40 am
Nonstop3h 40m
$454
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 6/9
9:20 pm-11:10 pm
Nonstop3h 50m
Los Angeles
Sun 6/14
5:30 am-11:10 am
Nonstop3h 40m
$480
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 6/17
6:15 pm-10:00 pm
1 stop5h 45m
Los Angeles
Mon 6/29
6:35 am-12:10 pm
Nonstop3h 35m
$490
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 May 8, 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 12% on your trip compared to booking a flight at noon.
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 May 8, 2026.
The most flights from STL to P4S are scheduled on a Friday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 May 8, 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
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
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.
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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 May 8, 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 May 8, 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 May 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$238 | 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$430 | 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$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$550 | FlexibilityNo cancel fee | On-time75% |