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Pasadena

$113+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
1 adult, Economy
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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 Wednesday or Thursday and return on a Thursday

Find flight deals from St. Louis to Pasadena

Cheapest flights from St. Louis to Pasadena
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 noviembre 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/259:54 pmSTL - LAX
1 stop16h 59mMultiple Airlines
mar. 12/29:54 pmLAX - STL
2 stops35h 13mMultiple Airlines
Deal found 11/10$198
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/2310:24 amSTL - LAX
1 stop9h 59mFrontier
dom. 11/305:33 pmLAX - STL
2 stops28h 24mFrontier
Deal found 11/9$200
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/23:30 pmSTL - LAX
2 stops29h 08mFrontier
jue. 12/118:47 pmLAX - STL
1 stop12h 35mFrontier
Deal found 11/9$201
This Trip.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/259:54 pmSTL - LAX
1 stop23h 53mFrontier
dom. 11/3011:15 pmLAX - STL
1 stop22h 42mFrontier
Deal found 11/11$205
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/249:54 pmSTL - LAX
1 stop16h 59mFrontier
dom. 11/303:18 pmLAX - STL
2 stops30h 39mFrontier
Deal found 11/10$206
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:54 pmSTL - LAX
1 stop12h 01mMultiple Airlines
dom. 11/305:33 pmLAX - STL
2 stops28h 24mMultiple Airlines
Deal found 11/9$207
This Expedia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:54 pmSTL - LAX
1 stop23h 53mFrontier
dom. 11/303:18 pmLAX - STL
1 stop27h 51mFrontier
Deal found 11/10$208
This Flightnetwork deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:54 pmSTL - LAX
1 stop16h 59mFrontier
sáb. 11/2911:15 pmLAX - STL
1 stop22h 42mFrontier
Deal found 11/11$209
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/249:54 pmSTL - LAX
1 stop12h 01mMultiple Airlines
vie. 11/283:22 pmLAX - STL
1 stop16h 40mMultiple Airlines
Deal found 11/11$210
This Kiwi.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/412:04 pmSTL - LAX
1 stop27h 07mMultiple Airlines
dom. 12/73:30 pmLAX - STL
2 stops15h 29mMultiple Airlines
Deal found 11/10$212
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/2310:24 amSTL - LAX
1 stop9h 59mFrontier
vie. 11/286:23 pmLAX - STL
2 stops13h 39mFrontier
Deal found 11/9$214

Cheap 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 noviembre 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$198
(Kiwi.com)

One-way from

$113
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$374
Provider with most accurate pricing for Lambert-St Louis-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Los Angeles flights.
Search Deals
From Lambert-St Louis to Pasadena
Search Deals
One-way flight from Lambert-St Louis to Pasadena
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 noviembre 12, 2025.
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

mié. 1/28

10:25 am-12:45 pm

Nonstop4h 20m

Los Angeles

mar. 2/3

11:00 pm-7:35 am

1 stop6h 35m

$305

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

mar. 12/9

6:35 pm-8:40 pm

Nonstop4h 05m

Los Angeles

mar. 12/16

9:35 am-5:15 pm

1 stop5h 40m

$305

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

mar. 12/9

6:00 am-3:29 pm

2 stops11h 29m

Los Angeles

mar. 12/16

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

sáb. 12/6

1:00 pm-8:43 pm

2 stops9h 43m

Los Angeles

mié. 12/10

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

mié. 1/28

6:30 am-11:52 am

1 stop7h 22m

Los Angeles

lun. 2/2

12:40 am-9:22 am

1 stop6h 42m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

vie. 1/2

6:00 am-8:10 am

Nonstop4h 10m

Los Angeles

sáb. 1/10

5:25 am-2:50 pm

1 stop7h 25m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

jue. 1/1

5:00 pm-10:30 pm

1 stop7h 30m

Los Angeles

mar. 1/6

7:50 am-4:35 pm

2 stops6h 45m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

sáb. 12/6

6:00 am-3:30 pm

2 stops11h 30m

Los Angeles

jue. 12/11

7:40 am-7:10 pm

2 stops9h 30m

$324

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

sáb. 1/10

6:10 am-4:08 pm

2 stops11h 58m

Los Angeles

lun. 1/12

9:55 am-9:35 pm

2 stops9h 40m

$324

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

vie. 1/2

6:00 am-8:10 am

Nonstop4h 10m

Los Angeles

lun. 1/5

6:35 pm-12:05 am

Nonstop3h 30m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 18 results
1
2

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.
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

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 November 7, 2025.

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 $248). 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 noviembre 12, 2025.

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 46% 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 November 2, 2025.

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. Sunday 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 noviembre 12, 2025.

The most flights from STL to P4S are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

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 noviembre 12, 2025.
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.
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,009 reviews
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,015 reviews
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,049 reviews
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,114 reviews
Southwest
8.0
Very good
4,235 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • What airport do you fly from for flights from St. Louis to Pasadena?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Pasadena from St. Louis. Booking flights from Lambert-St Louis (STL) to Pasadena should be relatively easy as there are 10 daily outbound flights to Pasadena from 7 different airlines.

  • How popular is this St. Louis to Pasadena flight route?

    Flights from Lambert-St Louis to Pasadena have been viewed 16 times in the past calendar month.

  • How long is the flight from St. Louis to Pasadena?

    There are many flights that can get you from St. Louis to Pasadena in 4h 20m. Fly via Southwest, Delta, or United Airlines to get the fastest option. Airlines will cover a distance of 1588 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from St. Louis to Pasadena?

    Before booking your flight to Pasadena from St. Louis, check out the most reliable airlines to get you to your destination on time: Southwest (73%), Cathay Pacific (68%), Qantas Airways( 68%).

  • What are the cheapest flights from St. Louis to Pasadena?

    The cheapest flight price from St. Louis to Pasadena is $147. On average you can expect to pay $885. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $132.

  • Can I find deals for flights from St. Louis to Pasadena that include hotel bookings?

    Yes. In addition to deals on St. Louis to Pasadena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Pasadena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pasadena.

  • Can I find deals for business class flights from St. Louis to Pasadena?

    Yes. Cheapflights offers flight deals from St. Louis to Pasadena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $248). 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.

See more FAQs

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Alternative routes for St. Louis to Pasadena

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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 noviembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$171Average$365FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$172Average$173FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$262Average$429FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$264Average$407FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$279Average$432FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$296Average$531FlexibilityNo cancel feeOn-time75%

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