$77+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Mar 20 — Mar 271
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
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 February 18, 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 February 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/92:09 pm
STL
- LAX
2 stops36h 07m
Frontier
Thu 3/128:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/17![Frontier logo]()
$239
This CheapOair deal was found by Cheapflights users on 2/17. 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.
Fri 2/271:59 pm
STL
- LAX
1 stop25h 37m
Frontier
Sun 3/19:09 pm
LAX
- STL
1 stop22h 04m
Frontier
Deal found 2/17![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 2/15. 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 3/198:02 am
STL
- LAX
1 stop12h 59m
Frontier
Mon 3/2310:07 pm
LAX
- STL
1 stop10h 25m
Frontier
Deal found 2/15![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 3/188:12 pm
STL
- LAX
1 stop30h 04m
Frontier
Wed 3/258:15 pm
LAX
- STL
1 stop23h 47m
Frontier
Deal found 2/16![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 5/188:12 pm
STL
- LAX
1 stop5h 59m
Frontier
Tue 5/197:15 am
LAX
- STL
2 stops21h 35m
Frontier
Deal found 2/15![Frontier logo]()
$246
This Super.com deal was found by Cheapflights users on 2/15. 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.
Wed 3/45:18 pm
STL
- LAX
1 stop8h 00m
Frontier
Sat 3/146:07 pm
LAX
- STL
1 stop16h 23m
Frontier
Deal found 2/15![Frontier logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 3/118:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Mon 3/1610:33 pm
LAX
- STL
2 stops33h 16m
Frontier
Deal found 2/13![Frontier logo]()
$248
This CheapOair deal was found by Cheapflights users on 2/14. 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.
Thu 3/198:06 pm
STL
- LAX
1 stop25h 18m
Frontier
Mon 3/301:28 pm
LAX
- STL
1 stop19h 51m
Frontier
Deal found 2/14![Frontier logo]()
$249
This Frontier deal was found by Cheapflights users on 2/13. 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 3/278:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Mon 4/610:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 2/13![Frontier logo]()
$250
This CheapOair deal was found by Cheapflights users on 2/13. 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.
Wed 4/18:16 pm
STL
- LAX
1 stop16h 44m
Frontier
Thu 4/302:17 pm
LAX
- STL
1 stop26h 55m
Frontier
Deal found 2/13![Frontier logo]()
$251
This CheapOair deal was found by Cheapflights users on 2/14. 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.
Fri 2/2710:11 pm
STL
- LAX
1 stop21h 27m
Frontier
Sun 3/810:43 pm
LAX
- STL
1 stop22h 36m
Frontier
Deal found 2/14![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 3/128:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Tue 3/178:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/16![Frontier logo]()
$253
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 February 18, 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 February 18, 2026.
This Delta deal was found by Cheapflights users on 2/16. 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.
Wed 3/252:12 pm
STL
- LAX
2 stops10h 38m
Delta
Tue 3/3111:50 am
LAX
- STL
2 stops10h 31m
Delta
Deal found 2/16![Delta logo]()
$305
This Super.com deal was found by Cheapflights users on 2/17. 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.
Wed 3/45:18 pm
STL
- LAX
1 stop8h 00m
Frontier
Sat 3/146:07 pm
LAX
- STL
1 stop16h 23m
Frontier
Deal found 2/17![Frontier logo]()
$312
This Southwest deal was found by Cheapflights users on 2/15. 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 5/159:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Tue 5/1911:10 am
LAX
- STL
1 stop6h 50m
Southwest
Deal found 2/15![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 2/15. 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.
Tue 3/107:15 am
STL
- LAX
2 stops10h 54m
Delta
Tue 3/1711:50 am
LAX
- STL
2 stops10h 31m
Delta
Deal found 2/15![Delta logo]()
$305
This Southwest deal was found by Cheapflights users on 2/15. 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 4/139:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Tue 4/211:45 pm
LAX
- STL
1 stop5h 30m
Southwest
Deal found 2/15![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 2/17. 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 5/159:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Wed 6/32:05 pm
LAX
- STL
1 stop5h 40m
Southwest
Deal found 2/17![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 2/17. 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 5/79:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Mon 5/115:00 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 2/17![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 2/14. 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 4/249:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Thu 4/305:00 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 2/14![Southwest logo]()
$343
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated February 18, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated February 18, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 2/17. 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.
Thu 2/2610:11 pm
STL
- LAX
1 stop10h 38m
Frontier
Sun 3/19:09 pm
LAX
- STL
1 stop22h 04m
Frontier
Deal found 2/17![Frontier logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 2/2610:11 pm
STL
- LAX
1 stop10h 38m
Frontier
Thu 3/266:15 pm
LAX
- STL
1 stop15h 04m
Frontier
Deal found 2/17![Frontier logo]()
$245
This CheapOair deal was found by Cheapflights users on 2/14. 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.
Fri 2/2710:11 pm
STL
- LAX
1 stop21h 27m
Frontier
Sun 3/810:43 pm
LAX
- STL
1 stop22h 36m
Frontier
Deal found 2/14![Frontier logo]()
$252
This Frontier deal was found by Cheapflights users on 2/17. 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 2/282:51 pm
STL
- LAX
1 stop11h 39m
Frontier
Sun 3/89:28 pm
LAX
- STL
1 stop11h 51m
Frontier
Deal found 2/17![Frontier logo]()
$251
This Trip.com deal was found by Cheapflights users on 2/17. 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 3/210:11 pm
STL
- LAX
1 stop21h 27m
Frontier
Sat 3/710:40 pm
LAX
- STL
1 stop29h 22m
Frontier
Deal found 2/17![Frontier logo]()
$249
This Super.com deal was found by Cheapflights users on 2/15. 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.
Wed 3/45:18 pm
STL
- LAX
1 stop8h 00m
Frontier
Sat 3/146:07 pm
LAX
- STL
1 stop16h 23m
Frontier
Deal found 2/15![Frontier logo]()
$247
This Expedia deal was found by Cheapflights users on 2/17. 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.
Sun 3/86:19 pm
STL
- LAX
1 stop16h 01m
Frontier
Thu 3/126:15 am
LAX
- STL
1 stop25h 34m
Frontier
Deal found 2/17![Frontier logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/92:09 pm
STL
- LAX
2 stops36h 07m
Frontier
Thu 3/128:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/17![Frontier logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 3/128:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Tue 3/178:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/16![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 3/168:12 pm
STL
- LAX
1 stop30h 04m
Frontier
Sun 3/229:28 pm
LAX
- STL
1 stop11h 51m
Frontier
Deal found 2/16![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 2/15. 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 3/198:02 am
STL
- LAX
1 stop12h 59m
Frontier
Mon 3/2310:07 pm
LAX
- STL
1 stop10h 25m
Frontier
Deal found 2/15![Frontier logo]()
$244
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 February 18, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated February 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 4/138:16 pm
STL
- LAX
1 stop20h 59m
Frontier
Deal found 2/17![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/168:12 pm
STL
- LAX
1 stop30h 04m
Frontier
Deal found 2/17![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 4/41:06 pm
STL
- LAX
1 stop8h 29m
Frontier
Deal found 2/15![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 5/158:12 pm
STL
- LAX
1 stop29h 02m
Frontier
Deal found 2/17![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 2/282:51 pm
STL
- LAX
1 stop11h 39m
Frontier
Deal found 2/16![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 5/18:12 pm
STL
- LAX
1 stop29h 02m
Frontier
Deal found 2/15![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 2/14. 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.
Wed 3/45:18 pm
STL
- LAX
1 stop8h 00m
Frontier
Deal found 2/14![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 2/15. 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 4/1611:21 am
STL
- LAX
1 stop10h 51m
Frontier
Deal found 2/15![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 2/15. 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.
Sun 5/108:12 pm
STL
- LAX
1 stop5h 59m
Frontier
Deal found 2/15![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/210:11 pm
STL
- LAX
1 stop21h 27m
Frontier
Deal found 2/15![Frontier logo]()
$99
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 February 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $239 (Kiwi.com) |
One-way from | $77 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $375 |
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 February 18, 2026.
Use the filters below to find and compare flights from St. Louis to Pasadena that are best for you.
Fly from
St. Louis
Fly to
Pasadena
Route
Depart
Return
Price
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 3/25
2:12 pm-10:50 pm
2 stops10h 38m
Los Angeles
Tue 3/31
11:50 am-12:21 am
2 stops10h 31m
$305
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 3/10
7:15 am-4:09 pm
2 stops10h 54m
Los Angeles
Tue 3/17
11:50 am-12:21 am
2 stops10h 31m
$305
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 3/4
5:18 pm-11:18 pm
1 stop8h 00m
Los Angeles
Sat 3/14
6:07 pm-12:30 pm
1 stop16h 23m
$312
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 5/15
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Tue 5/19
11:10 am-8:00 pm
1 stop6h 50m
$338
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 4/13
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Tue 4/21
1:45 pm-9:15 pm
1 stop5h 30m
$338
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 5/15
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Wed 6/3
2:05 pm-9:45 pm
1 stop5h 40m
$338
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 5/7
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Mon 5/11
5:00 am-10:35 am
Nonstop3h 35m
$343
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 4/24
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Thu 4/30
5:00 am-10:35 am
Nonstop3h 35m
$343
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 4/16
8:12 pm-12:11 am
1 stop5h 59m
$95
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 5/14
8:12 pm-12:11 am
1 stop5h 59m
$95
Showing 1-10 of 18 results
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
How far ahead should I book a flight from St. Louis to Pasadena?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Pasadena. Price data was last updated on February 13, 2026.
The best time to book flights from St. Louis to Pasadena is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from St. Louis to Pasadena?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Pasadena (average of $67). Flying from St. Louis to Pasadena in June is currently the most expensive (average of $244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 February 18, 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 45% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from St. Louis to Pasadena?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Pasadena. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Wednesday evenings 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 February 18, 2026.
The most flights from STL to P4S are scheduled on a Monday (11 on average). You will have fewer flight options on Wednesday, 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 February 18, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
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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St. Louis and Pasadena flights
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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 February 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$126 | Average$205 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$171 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$228 | Average$379 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$262 | Average$428 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$286 | Average$441 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$483 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$304 | Average$360 | FlexibilityNo cancel fee | On-time62% |