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Pasadena

$103+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Pasadena are usually found in September or January, 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 October 29, 2025.

This CheapOair deal was found by Cheapflights users on 10/27. 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.
Mon 11/312:09 pmSTL - LAX
1 stop5h 36mFrontier
Thu 11/133:27 pmLAX - STL
1 stop20h 30mFrontier
Deal found 10/27$176
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 11/1012:09 pmSTL - LAX
1 stop5h 36mMultiple Airlines
Thu 11/139:04 amLAX - STL
2 stops22h 03mMultiple Airlines
Deal found 10/27$179
This CheapOair deal was found by Cheapflights users on 10/27. 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.
Wed 11/127:45 pmSTL - LAX
1 stop15h 48mFrontier
Sun 11/166:44 amLAX - STL
1 stop24h 23mFrontier
Deal found 10/27$182
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 12/317:43 pmSTL - LAX
1 stop13h 59mFrontier
Mon 1/55:09 pmLAX - STL
2 stops38h 53mFrontier
Deal found 10/27$183
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 12/13:53 pmSTL - LAX
1 stop20h 46mFrontier
Fri 12/58:51 pmLAX - STL
1 stop11h 23mFrontier
Deal found 10/26$192
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 11/247:04 pmSTL - LAX
1 stop21h 43mFrontier
Fri 12/58:51 pmLAX - STL
1 stop11h 23mFrontier
Deal found 10/26$193
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 11/132:42 pmSTL - LAX
1 stop7h 11mMultiple Airlines
Fri 11/146:10 amLAX - STL
2 stops24h 57mMultiple Airlines
Deal found 10/28$195
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Tue 12/3010:48 amSTL - LAX
1 stop25h 22mFrontier
Sat 1/311:08 amLAX - STL
2 stops54h 59mFrontier
Deal found 10/28$197
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 12/177:43 pmSTL - LAX
1 stop13h 59mFrontier
Tue 12/238:58 pmLAX - STL
1 stop11h 04mFrontier
Deal found 10/29$198
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Tue 11/117:45 pmSTL - LAX
1 stop6h 40mFrontier
Sat 11/152:48 pmLAX - STL
1 stop16h 19mFrontier
Deal found 10/28$200
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 11/132:42 pmSTL - LAX
1 stop7h 11mMultiple Airlines
Sat 11/159:04 amLAX - STL
2 stops22h 03mMultiple Airlines
Deal found 10/28$201

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 October 29, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$176
(CheapOair)

One-way from

$103
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$372
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. 3% potential increase in price ($14 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 October 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 October 29, 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

Tue 12/9

6:00 am-3:29 pm

2 stops11h 29m

Los Angeles

Tue 12/16

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 12/6

6:30 am-4:54 pm

2 stops12h 24m

Los Angeles

Wed 12/10

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/10

8:30 am-1:00 pm

1 stop6h 30m

Los Angeles

Fri 3/13

12:25 am-10:21 am

1 stop7h 56m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 2/17

4:30 pm-9:19 pm

1 stop6h 49m

Los Angeles

Mon 2/23

12:55 am-9:23 am

1 stop6h 28m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/17

3:00 pm-6:58 pm

1 stop5h 58m

Los Angeles

Tue 3/31

12:40 am-9:42 am

1 stop7h 02m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 4/14

1:30 pm-5:13 pm

1 stop5h 43m

Los Angeles

Sat 4/18

5:00 am-12:43 pm

1 stop5h 43m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 4/4

9:13 am-1:00 pm

1 stop5h 47m

Los Angeles

Fri 4/10

12:40 am-9:42 am

1 stop7h 02m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/10

8:25 am-10:35 am

Nonstop4h 10m

Los Angeles

Sat 3/14

4:05 pm-1:50 am

1 stop7h 45m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Fri 1/9

10:15 am-4:15 pm

1 stop8h 00m

Los Angeles

Tue 1/13

11:35 am-5:10 pm

Nonstop3h 35m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Thu 1/8

10:42 am-9:11 am

1 stop24h 29m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 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 October 24, 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 October 29, 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 October 26, 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.

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 October 29, 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
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
7,992 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
8,999 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
11,032 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
3,124 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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 6 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 6h 30m. Fly via 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: Cathay Pacific (79%), Qantas Airways (77%), Japan Airlines( 77%).

  • 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 $1,288. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $130.

  • 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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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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$224FlexibilityNo cancel feeOn-time62%
DeltaCheapest$171Average$364FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$172Average$173FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$259Average$431FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$264Average$406FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$292Average$434FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$296Average$547FlexibilityNo cancel feeOn-time75%

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