$129+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Apr 3 — Apr 101
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 March 4, 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 March 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 3/158:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Tue 3/248:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 3/1![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/158:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Mon 3/238:19 pm
LAX
- STL
1 stop13h 00m
Frontier
Deal found 2/27![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/278:12 pm
STL
- LAX
2 stops25h 28m
Frontier
Mon 3/309:28 pm
LAX
- STL
1 stop11h 51m
Frontier
Deal found 2/28![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:16 pm
STL
- LAX
1 stop5h 56m
Frontier
Mon 4/610:36 pm
LAX
- STL
2 stops33h 12m
Frontier
Deal found 3/3![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 2/27. 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 3/165:46 pm
STL
- LAX
1 stop6h 02m
Frontier
Tue 3/248:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/27![Frontier logo]()
$271
This CheapOair deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/164:16 pm
STL
- LAX
1 stop18h 02m
Frontier
Sat 5/2310:49 pm
LAX
- STL
1 stop8h 48m
Frontier
Deal found 2/28![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/178:06 pm
STL
- LAX
1 stop18h 33m
Frontier
Wed 3/256:30 pm
LAX
- STL
2 stops14h 01m
Frontier
Deal found 2/27![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
- LAX
2 stops14h 35m
Multiple Airlines
Sun 4/128:35 pm
LAX
- STL
1 stop12h 52m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$274
This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:06 pm
STL
- LAX
1 stop23h 06m
Frontier
Tue 4/149:04 pm
LAX
- STL
1 stop24h 15m
Frontier
Deal found 3/3![Frontier logo]()
$275
This Expedia deal was found by Cheapflights users on 2/27. 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.
Sat 3/712:14 pm
STL
- LAX
1 stop6h 58m
Frontier
Tue 3/108:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/27![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/1812:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Wed 3/258:15 pm
LAX
- STL
1 stop23h 47m
Frontier
Deal found 2/27![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/258:12 pm
STL
- LAX
1 stop16h 37m
Multiple Airlines
Mon 3/309:49 pm
LAX
- STL
2 stops10h 43m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$278
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 March 4, 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 March 4, 2026.
This Southwest deal was found by Cheapflights users on 3/1. 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 5/235:00 pm
STL
- LAX
1 stop5h 55m
Southwest
Sat 5/3011:30 pm
LAX
- STL
1 stop7h 35m
Southwest
Deal found 3/1![Southwest logo]()
$336
This Delta deal was found by Cheapflights users on 2/27. 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.
Fri 5/112:23 pm
STL
- LAX
2 stops10h 18m
Delta
Tue 5/512:00 pm
LAX
- STL
2 stops10h 25m
Delta
Deal found 2/27![Delta logo]()
$375
This Alaska Airlines deal was found by Cheapflights users on 2/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:33 pm
STL
- LAX
1 stop8h 24m
Alaska Airlines
Tue 5/196:16 pm
LAX
- STL
Nonstop3h 43m
Alaska Airlines
Deal found 2/27![Alaska Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 3/2. 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 4/96:45 pm
STL
- LAX
1 stop5h 40m
Southwest
Tue 4/147:30 am
LAX
- STL
1 stop5h 20m
Southwest
Deal found 3/2![Southwest logo]()
$343
This Southwest deal was found by Cheapflights users on 3/2. 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 5/149:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Mon 5/185:00 pm
LAX
- STL
1 stop5h 15m
Southwest
Deal found 3/2![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 3/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:25 am
STL
- LAX
1 stop6h 15m
Southwest
Wed 4/812:25 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 3/3![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 2/27. 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.
Sat 3/77:00 am
STL
- LAX
1 stop7h 26m
Delta
Sat 3/145:45 am
LAX
- STL
1 stop6h 58m
Delta
Deal found 2/27![Delta logo]()
$456
This Southwest deal was found by Cheapflights users on 3/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Sun 4/1911:30 pm
LAX
- STL
1 stop6h 25m
Southwest
Deal found 3/3![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 2/28. 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.
Fri 5/152:27 pm
STL
- LAX
2 stops10h 19m
Delta
Tue 6/212:30 am
LAX
- STL
1 stop8h 02m
Delta
Deal found 2/28![Delta logo]()
$464
This Southwest deal was found by Cheapflights users on 2/28. 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 3/247:25 am
STL
- LAX
2 stops8h 00m
Southwest
Tue 4/72:20 pm
LAX
- STL
2 stops6h 55m
Southwest
Deal found 2/28![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 3/1. 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 3/144:45 pm
STL
- LAX
1 stop9h 25m
Southwest
Mon 3/165:20 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 3/1![Southwest logo]()
$450
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated March 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated March 4, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 2/27. 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.
Sat 3/712:14 pm
STL
- LAX
1 stop6h 58m
Frontier
Tue 3/108:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/27![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 3/158:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Tue 3/248:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 3/1![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/158:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Mon 3/238:19 pm
LAX
- STL
1 stop13h 00m
Frontier
Deal found 2/27![Frontier logo]()
$268
This Frontier deal was found by Cheapflights users on 2/27. 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 3/165:46 pm
STL
- LAX
1 stop6h 02m
Frontier
Tue 3/248:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/27![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/178:06 pm
STL
- LAX
1 stop18h 33m
Frontier
Wed 3/256:30 pm
LAX
- STL
2 stops14h 01m
Frontier
Deal found 2/27![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/1812:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Wed 3/258:15 pm
LAX
- STL
1 stop23h 47m
Frontier
Deal found 2/27![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/258:12 pm
STL
- LAX
1 stop16h 37m
Multiple Airlines
Mon 3/309:49 pm
LAX
- STL
2 stops10h 43m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$278
This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:06 pm
STL
- LAX
1 stop23h 06m
Frontier
Tue 4/149:04 pm
LAX
- STL
1 stop24h 15m
Frontier
Deal found 3/3![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/278:12 pm
STL
- LAX
2 stops25h 28m
Frontier
Mon 3/309:28 pm
LAX
- STL
1 stop11h 51m
Frontier
Deal found 2/28![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:16 pm
STL
- LAX
1 stop5h 56m
Frontier
Mon 4/610:36 pm
LAX
- STL
2 stops33h 12m
Frontier
Deal found 3/3![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/312:22 pm
STL
- LAX
1 stop26h 36m
Frontier
Sat 4/48:35 pm
LAX
- STL
2 stops35h 13m
Frontier
Deal found 3/1![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
- LAX
2 stops14h 35m
Multiple Airlines
Sun 4/128:35 pm
LAX
- STL
1 stop12h 52m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$274
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 March 4, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated March 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 3/308:12 pm
STL
- LAX
2 stops25h 18m
Frontier
Deal found 2/28![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/214:59 pm
STL
- LAX
2 stops32h 15m
Frontier
Deal found 3/1![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 4/18:16 pm
STL
- LAX
2 stops37h 05m
Frontier
Deal found 2/28![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/258:12 pm
STL
- LAX
2 stops20h 20m
Frontier
Deal found 2/27![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 3/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:46 pm
STL
- LAX
1 stop6h 02m
Frontier
Deal found 3/3![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 3/298:06 pm
STL
- LAX
2 stops27h 24m
Frontier
Deal found 3/2![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 2/27. 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 3/148:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Deal found 2/27![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 3/2412:14 pm
STL
- LAX
2 stops27h 38m
Frontier
Deal found 2/27![Frontier logo]()
$136
This CheapOair deal was found by Cheapflights users on 2/27. 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.
Sun 3/228:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Deal found 2/27![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 5/264:44 pm
STL
- LAX
1 stop25h 59m
Frontier
Deal found 2/27![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 2/28. 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.
Sun 3/158:06 pm
STL
- LAX
1 stop22h 27m
Frontier
Deal found 2/28![Frontier logo]()
$139
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 March 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $267 (Kiwi.com) |
One-way from | $129 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $410 |
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 March 4, 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
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 5/23
5:00 pm-8:55 pm
1 stop5h 55m
Los Angeles
Sat 5/30
11:30 pm-9:05 am
1 stop7h 35m
$336
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 4/9
6:45 pm-10:25 pm
1 stop5h 40m
Los Angeles
Tue 4/14
7:30 am-2:50 pm
1 stop5h 20m
$343
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 5/14
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Mon 5/18
5:00 pm-12:15 am
1 stop5h 15m
$349
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 4/1
8:25 am-12:40 pm
1 stop6h 15m
Los Angeles
Wed 4/8
12:25 pm-6:00 pm
Nonstop3h 35m
$371
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 4/17
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles
Sun 4/19
11:30 pm-7:55 am
1 stop6h 25m
$373
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 5/1
12:23 pm-8:41 pm
2 stops10h 18m
Los Angeles
Tue 5/5
12:00 pm-12:25 am
2 stops10h 25m
$375
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 3/24
7:25 am-1:25 pm
2 stops8h 00m
Los Angeles
Tue 4/7
2:20 pm-11:15 pm
2 stops6h 55m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 3/14
4:45 pm-12:10 am
1 stop9h 25m
Los Angeles
Mon 3/16
5:20 am-10:55 am
Nonstop3h 35m
$450
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 3/7
7:00 am-12:26 pm
1 stop7h 26m
Los Angeles
Sat 3/14
5:45 am-2:43 pm
1 stop6h 58m
$456
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 5/15
2:27 pm-10:46 pm
2 stops10h 19m
Los Angeles
Tue 6/2
12:30 am-10:32 am
1 stop8h 02m
$464
Showing 1-10 of 22 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
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 27, 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 $246). 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 March 4, 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 17, 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.
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 March 4, 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.
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
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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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 March 4, 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 March 4, 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 March 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$231 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$190 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$262 | Average$424 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$273 | Average$411 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$304 | Average$372 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$531 | FlexibilityNo cancel fee | On-time75% |