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Pasadena

$107+ 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Pasadena are usually found in September or August, booked 89 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 July 3, 2025.

Round-trip from

$262
(FlightHub)

One-way from

$107
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$387
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 ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/192:52 pmSTL - LAX
1 stop8h 44mMultiple Airlines
Sat 7/2610:10 pmLAX - STL
1 stop9h 42mMultiple Airlines
Deal found 7/2$262
This Mytrip deal was found by Cheapflights users on 7/1. 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.
Mon 7/2810:47 amSTL - LAX
2 stops24h 26mSpirit Airlines
Wed 7/3010:10 pmLAX - STL
1 stop9h 42mSpirit Airlines
Deal found 7/1$263
This Trip.com deal was found by Cheapflights users on 7/2. 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.
Mon 7/212:37 pmSTL - LAX
1 stop7h 15mFrontier
Fri 7/259:28 pmLAX - STL
1 stop14h 31mFrontier
Deal found 7/2$265
This Southwest deal was found by Cheapflights users on 7/2. 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.
Tue 9/306:35 pmSTL - LAX
Nonstop3h 55mSouthwest
Tue 10/75:30 amLAX - STL
Nonstop3h 40mSouthwest
Deal found 7/2$295
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/26:30 amSTL - LAX
1 stop7h 30mDelta
Fri 8/812:47 amLAX - STL
1 stop7h 46mDelta
Deal found 7/2$315

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 July 3, 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

Sat 7/19

2:52 pm-9:36 pm

1 stop8h 44m

Los Angeles

Sat 7/26

10:10 pm-9:52 am

1 stop9h 42m

$262

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Mon 7/28

10:47 am-9:13 am

2 stops24h 26m

Los Angeles

Wed 7/30

10:10 pm-9:52 am

1 stop9h 42m

$263

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Mon 7/21

2:37 pm-7:52 pm

1 stop7h 15m

Los Angeles

Fri 7/25

9:28 pm-1:59 pm

1 stop14h 31m

$265

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 9/30

6:35 pm-8:30 pm

Nonstop3h 55m

Los Angeles

Tue 10/7

5:30 am-11:10 am

Nonstop3h 40m

$295

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 8/2

6:30 am-12:00 pm

1 stop7h 30m

Los Angeles

Fri 8/8

12:47 am-10:33 am

1 stop7h 46m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Wed 8/13

6:45 am-8:34 am

Nonstop3h 49m

Los Angeles

Tue 8/19

6:00 am-6:30 pm

1 stop10h 30m

$318

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Fri 10/17

9:25 pm-7:53 pm

1 stop24h 28m

$107

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sun 11/9

8:44 am-3:36 pm

1 stop8h 52m

$115

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Wed 9/10

6:00 am-7:10 pm

2 stops15h 10m

$140

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 8/2

9:10 pm-11:05 pm

Nonstop3h 55m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 13 results
1
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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 June 27, 2025.

The best time to book flights from St. Louis to Pasadena is 89 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 $326). 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 July 3, 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 June 29, 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. Tuesday afternoons 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 July 3, 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. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,086 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.9
Fair
3,286 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 4 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 12 times in the past calendar month.

  • What are the cheapest airlines to fly from St. Louis to Pasadena one-way?

    The cheapest airlines for a one-way flight from St. Louis to Pasadena are Frontier ($107), Spirit Airlines ($115), and Alaska Airlines ($140).

  • 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: American Airlines (88%), Alaska Airlines (88%), Southwest( 78%).

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

    The cheapest flight price from St. Louis to Pasadena is $162. On average you can expect to pay $708. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $121.

  • 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, 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 $326). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$56Average$260FlexibilityNo cancel feeOn-time65%
FrontierCheapest$94Average$221FlexibilityNo cancel feeOn-time62%
DeltaCheapest$181Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$254Average$412FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$281Average$442FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$290Average$439FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$296Average$550FlexibilityNo cancel feeOn-time75%

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