$141+ Cheap flights from St. Louis (STL) to Pasadena, CA
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jul 7 — Jul 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 June 7, 2026.
Explore the most affordable flight options available from St. Louis to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
This CheapOair deal was found by Cheapflights users on 6/3. 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.
Sat 8/17:10 pm
STL
- LAX
1 stop27h 04m
Frontier
Sat 8/296:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/3![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 7/57:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 7/77:46 pm
LAX
- STL
1 stop21h 37m
Frontier
Deal found 6/2![Frontier logo]()
$274
This Frontier deal was found by Cheapflights users on 6/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Wed 7/86:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/3![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Tue 7/78:08 pm
STL
- LAX
1 stop30h 03m
Frontier
Wed 7/151:56 pm
LAX
- STL
2 stops23h 00m
Frontier
Deal found 6/2![Frontier logo]()
$277
This Expedia deal was found by Cheapflights users on 6/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Sat 8/86:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/4![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 9/1610:35 am
STL
- LAX
1 stop9h 07m
Frontier
Tue 9/225:58 pm
LAX
- STL
2 stops13h 42m
Frontier
Deal found 6/3![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Sat 7/118:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Tue 7/2112:07 pm
LAX
- STL
1 stop27h 58m
Frontier
Deal found 6/6![Frontier logo]()
$281
This Trip.com deal was found by Cheapflights users on 6/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:35 am
STL
- LAX
1 stop9h 07m
Frontier
Sat 10/103:15 pm
LAX
- STL
1 stop8h 02m
Frontier
Deal found 6/2![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 7/217:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Wed 7/2911:00 pm
LAX
- STL
2 stops16h 37m
Frontier
Deal found 6/4![Frontier logo]()
$283
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Sat 7/186:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/6![Frontier logo]()
$284
This Super.com deal was found by Cheapflights users on 6/3. 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.
Sat 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Sun 7/128:49 pm
LAX
- STL
1 stop20h 34m
Frontier
Deal found 6/3![Frontier logo]()
$285
This Expedia deal was found by Cheapflights users on 6/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- LAX
1 stop14h 25m
Frontier
Mon 7/66:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/5![Frontier logo]()
$286
Best flights from St. Louis to PasadenaDiscover carefully curated flight deals from St. Louis to Pasadena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
Discover carefully curated flight deals from St. Louis to Pasadena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
This Southwest deal was found by Cheapflights users on 6/5. 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.
Wed 7/156:10 am
STL
- LAX
1 stop5h 25m
Southwest
Wed 7/154:10 pm
LAX
- STL
1 stop5h 35m
Southwest
Deal found 6/5![Southwest logo]()
$403
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:20 am
STL
- LAX
Nonstop4h 05m
Southwest
Mon 10/125:55 pm
LAX
- STL
Nonstop3h 30m
Southwest
Deal found 6/6![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:05 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sun 8/236:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/6![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 6/4. 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.
Sun 10/1110:25 pm
STL
- LAX
Nonstop3h 55m
Southwest
Tue 10/1311:10 pm
LAX
- STL
1 stop6h 35m
Southwest
Deal found 6/4![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 6/6. 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 9/68:30 am
STL
- LAX
1 stop8h 00m
Southwest
Sun 9/136:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/6![Southwest logo]()
$433
This Southwest deal was found by Cheapflights users on 6/6. 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.
Mon 7/67:20 am
STL
- LAX
1 stop7h 25m
Southwest
Fri 7/106:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/6![Southwest logo]()
$433
This Southwest deal was found by Cheapflights users on 6/4. 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.
Thu 7/309:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Thu 8/67:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/4![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 6/4. 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.
Wed 7/228:35 am
STL
- LAX
2 stops8h 00m
Southwest
Sun 7/264:15 pm
LAX
- STL
2 stops6h 40m
Southwest
Deal found 6/4![Southwest logo]()
$448
This Southwest deal was found by Cheapflights users on 6/3. 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 10/169:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 10/192:40 pm
LAX
- STL
1 stop7h 05m
Southwest
Deal found 6/3![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 6/3. 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 7/109:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 7/136:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/3![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 6/3. 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.
Thu 7/29:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
Tue 7/75:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/3![Southwest logo]()
$456
This Southwest deal was found by Cheapflights users on 6/2. 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 10/155:55 am
STL
- LAX
1 stop6h 30m
Southwest
Sat 10/176:45 am
LAX
- STL
2 stops7h 50m
Southwest
Deal found 6/2![Southwest logo]()
$464
Last-minute flights from St. Louis to PasadenaDiscover last-minute flight deals from St. Louis to Pasadena. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pasadena. Data last updated June 7, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Wed 7/86:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/3![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Sat 7/116:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/6![Frontier logo]()
$287
This Expedia deal was found by Cheapflights users on 6/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- LAX
1 stop14h 25m
Frontier
Mon 7/66:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/5![Frontier logo]()
$286
This Super.com deal was found by Cheapflights users on 6/3. 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.
Sat 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Sun 7/128:49 pm
LAX
- STL
1 stop20h 34m
Frontier
Deal found 6/3![Frontier logo]()
$285
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Mon 7/69:09 pm
LAX
- STL
1 stop18h 56m
Frontier
Deal found 6/3![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 7/57:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Tue 7/77:46 pm
LAX
- STL
1 stop21h 37m
Frontier
Deal found 6/2![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Tue 7/78:08 pm
STL
- LAX
1 stop30h 03m
Frontier
Wed 7/151:56 pm
LAX
- STL
2 stops23h 00m
Frontier
Deal found 6/2![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Sat 7/118:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Tue 7/2112:07 pm
LAX
- STL
1 stop27h 58m
Frontier
Deal found 6/6![Frontier logo]()
$281
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Sat 7/186:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/6![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 7/147:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Fri 7/176:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/4![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 7/217:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Wed 7/2911:00 pm
LAX
- STL
2 stops16h 37m
Frontier
Deal found 6/4![Frontier logo]()
$283
This Expedia deal was found by Cheapflights users on 6/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Sat 8/86:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/4![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 June 7, 2026.
Search for one-way flight options from St. Louis to Pasadena. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This Super.com deal was found by Cheapflights users on 6/4. 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.
Wed 7/87:03 pm
STL
- LAX
1 stop27h 11m
Frontier
Deal found 6/4![Frontier logo]()
$141
This Super.com deal was found by Cheapflights users on 6/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/258:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Deal found 6/2![Frontier logo]()
$142
This Expedia deal was found by Cheapflights users on 6/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:08 pm
STL
- LAX
1 stop14h 22m
Frontier
Deal found 6/2![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 8/177:10 pm
STL
- LAX
2 stops28h 14m
Frontier
Deal found 6/5![Frontier logo]()
$144
This Expedia deal was found by Cheapflights users on 6/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:46 pm
STL
- LAX
1 stop25h 14m
Frontier
Deal found 6/4![Frontier logo]()
$145
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:10 am
STL
- LAX
1 stop8h 27m
United Airlines
Deal found 6/3![United Airlines logo]()
$146
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:10 pm
STL
- LAX
1 stop5h 53m
Frontier
Deal found 6/6![Frontier logo]()
$147
This Trip.com deal was found by Cheapflights users on 6/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:46 pm
STL
- LAX
1 stop21h 21m
Frontier
Deal found 6/4![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 6/3. 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 7/68:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 6/3![Frontier logo]()
$150
This Super.com deal was found by Cheapflights users on 6/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:10 pm
STL
- LAX
1 stop5h 53m
Frontier
Deal found 6/6![Frontier logo]()
$151
This Super.com deal was found by Cheapflights users on 6/4. 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.
Sun 7/127:10 pm
STL
- LAX
1 stop22h 10m
Frontier
Deal found 6/4![Frontier logo]()
$154
Find flight deals from St. Louis to Pasadena
Keep the following information in mind while searching for St. Louis to Pasadena flight deals. Data was last updated June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $273 (CheapOair) |
One-way from | $141 (Super.com) |
Popular in | May |
Cheapest in | September |
Average price | $425 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Pasadena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 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
Wed 7/15
6:10 am-9:35 am
1 stop5h 25m
Los Angeles
Wed 7/15
4:10 pm-11:45 pm
1 stop5h 35m
$403
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 10/8
6:20 am-8:25 am
Nonstop4h 05m
Los Angeles
Mon 10/12
5:55 pm-11:25 pm
Nonstop3h 30m
$423
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 8/13
9:05 pm-11:00 pm
Nonstop3h 55m
Los Angeles
Sun 8/23
6:45 am-12:20 pm
Nonstop3h 35m
$423
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 10/11
10:25 pm-12:20 am
Nonstop3h 55m
Los Angeles
Tue 10/13
11:10 pm-7:45 am
1 stop6h 35m
$428
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 9/6
8:30 am-2:30 pm
1 stop8h 00m
Los Angeles
Sun 9/13
6:45 am-12:20 pm
Nonstop3h 35m
$433
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 7/6
7:20 am-12:45 pm
1 stop7h 25m
Los Angeles
Fri 7/10
6:35 am-12:10 pm
Nonstop3h 35m
$433
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 7/30
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Thu 8/6
7:10 pm-12:45 am
Nonstop3h 35m
$441
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/22
8:35 am-2:35 pm
2 stops8h 00m
Los Angeles
Sun 7/26
4:15 pm-12:55 am
2 stops6h 40m
$448
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 10/16
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Mon 10/19
2:40 pm-11:45 pm
1 stop7h 05m
$451
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 7/10
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Mon 7/13
6:35 am-12:10 pm
Nonstop3h 35m
$454
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 June 7, 2026.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Pasadena in the evening. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.
Weekly flight availability from St. Louis to Pasadena
Explore weekly flight availability from St. Louis to Pasadena. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 7, 2026.
The most flights from STL to P4S are scheduled on a Monday (9 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from St. Louis to Pasadena?
What is the cheapest day to fly from St. Louis to Pasadena?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Pasadena. Price data was last updated on February 17, 2026.
Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Pasadena
Get insights into the airlines that provide service to Pasadena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pasadena. Reviews last updated June 7, 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.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Pasadena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Top destinations
Alternative routes for St. Louis to Pasadena
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pasadena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Pasadena by cabin class
Find flights from St. Louis to Pasadena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Pasadena flights
Browse other St. Louis and Pasadena flight options. Last updated on June 7, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on June 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Pasadena flights
Consider these flights traveling from St. Louis to Pasadena.
Top 7 airlines flying from St. Louis to Pasadena
Discover the top 7 airlines that operate flights from St. Louis to Pasadena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$242 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$201 | Average$443 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$366 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$263 | Average$428 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$394 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$531 | FlexibilityNo cancel fee | On-time75% |