$120+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
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 August, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Tuesday
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 May 1, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $260 (Booking.com) |
One-way from | $120 (CheapOair) |
Popular in | March |
Cheapest in | September |
Average price | $395 |
Find flight deals from St. Louis to Pasadena
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 May 1, 2025.
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 May 1, 2025.
This CheapOair deal was found by Cheapflights users on 5/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 5/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/30. 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.
This United Airlines deal was found by Cheapflights users on 4/30. 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.
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight 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 May 1, 2025.
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
Price
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 5/24
5:35 pm-5:16 pm
1 stop25h 41m
Los Angeles
Tue 5/27
11:46 am-10:09 am
1 stop20h 23m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 5/29
10:10 am-5:39 pm
1 stop9h 29m
Los Angeles
Thu 6/5
10:10 pm-9:15 am
2 stops33h 05m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 5/30
2:25 pm-7:52 pm
1 stop7h 27m
Los Angeles
Fri 6/6
11:55 pm-11:25 am
1 stop9h 30m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 7/8
6:14 am-8:37 am
Nonstop4h 23m
Los Angeles
Tue 7/15
5:33 pm-11:21 pm
Nonstop3h 48m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 10/14
7:00 am-2:40 pm
1 stop9h 40m
Los Angeles
Tue 10/21
11:20 am-11:56 pm
1 stop10h 36m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/23
11:23 am-5:39 pm
1 stop8h 16m
Los Angeles
Tue 7/29
11:55 pm-8:34 am
1 stop6h 39m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 7/26
9:10 pm-11:05 pm
Nonstop3h 55m
Los Angeles
Tue 7/29
6:45 pm-12:25 am
Nonstop3h 40m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 6/3
4:32 pm-8:50 pm
1 stop6h 18m
Los Angeles
Fri 6/6
12:56 am-10:12 am
1 stop7h 16m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 5/8
5:45 pm-5:43 pm
1 stop25h 58m
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 6/5
10:10 am-5:39 pm
1 stop9h 29m
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.
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 April 25, 2025.
The best time to book flights from St. Louis to Pasadena is 67 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, January is the cheapest month in which you can book a flight from St. Louis to Pasadena (average of $246). Flying from St. Louis to Pasadena in March is currently the most expensive (average of $327). 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 May 1, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Pasadena as you normally would.
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 March 30, 2025.
Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday afternoons 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 May 1, 2025.
The most flights from STL to P4S are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
Rainfall in Pasadena by month
Plan your trip to Pasadena by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Pasadena ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Pasadena when rainfall is around 0.0 in.
Temperature in Pasadena by month
Plan your trip to Pasadena by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Pasadena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from St. Louis to Pasadena by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
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.
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 May 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$100 | Average$206 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$181 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$263 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$479 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$290 | Average$438 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$518 | FlexibilityNo cancel fee | On-time75% |