Pasadena

$91+ 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
feb. 4 — feb. 111
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The best prices from Lambert-St Louis to Pasadena are usually found in September or August, booked 77 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from St. Louis to Pasadena

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Pasadena (P4S). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$135
(CheapOair)

One-way from

$91
(Frontier)

Popular in

March

Cheapest in

September

Average price

$415
Provider with most accurate pricing for Lambert-St Louis-Los Angeles flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Los Angeles flights.
From Lambert-St Louis to Pasadena
One-way flight from Lambert-St Louis to Pasadena
Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in January 2025

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 enero 30, 2025.

This CheapOair deal was found by Cheapflights users on 1/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/311:08 pmSTL - LAX
1 stop12h 32mFrontier
sáb. 3/88:18 pmLAX - STL
1 stop24h 31mFrontier
Deal found 1/30$135
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/218:00 pmSTL - LAX
1 stop15h 32mMultiple Airlines
lun. 2/248:09 pmLAX - STL
1 stop19h 27mMultiple Airlines
Deal found 1/29$228
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/204:00 pmSTL - LAX
3 stops24h 55mSpirit Airlines
lun. 2/2411:30 pmLAX - STL
2 stops13h 12mSpirit Airlines
Deal found 1/29$259
This Southwest deal was found by Cheapflights users on 1/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/312:10 pmSTL - LAX
Nonstop4h 20mSouthwest
lun. 3/175:30 amLAX - STL
Nonstop3h 35mSouthwest
Deal found 1/29$277
This Delta deal was found by Cheapflights users on 1/29. 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.
vie. 2/216:00 amSTL - LAX
1 stop9h 50mDelta
jue. 2/279:56 amLAX - STL
1 stop6h 04mDelta
Deal found 1/29$322
This American Airlines deal was found by Cheapflights users on 1/30. 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.
vie. 4/186:15 amSTL - LAX
Nonstop4h 07mAmerican Airlines
lun. 4/215:40 pmLAX - STL
Nonstop3h 36mAmerican Airlines
Deal found 1/30$327
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/37:00 amSTL - LAX
1 stop9h 55mAlaska Airlines
jue. 3/66:00 amLAX - STL
2 stops15h 59mAlaska Airlines
Deal found 1/28$335
This United Airlines deal was found by Cheapflights users on 1/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/209:00 amSTL - LAX
1 stop7h 37mUnited Airlines
dom. 2/2312:55 amLAX - STL
1 stop6h 56mUnited Airlines
Deal found 1/29$337

Find flights from St. Louis to Pasadena within your budget

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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

lun. 3/3

11:08 pm-9:40 am

1 stop12h 32m

Los Angeles

sáb. 3/8

8:18 pm-10:49 pm

1 stop24h 31m

$135

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

vie. 2/21

8:00 pm-9:32 am

1 stop15h 32m

Los Angeles

lun. 2/24

8:09 pm-5:36 pm

1 stop19h 27m

$228

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

jue. 2/20

4:00 pm-2:55 pm

3 stops24h 55m

Los Angeles

lun. 2/24

11:30 pm-2:42 pm

2 stops13h 12m

$259

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

lun. 3/3

12:10 pm-2:30 pm

Nonstop4h 20m

Los Angeles

lun. 3/17

5:30 am-11:05 am

Nonstop3h 35m

$277

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

jue. 2/20

6:59 pm-11:55 pm

1 stop6h 56m

Los Angeles

lun. 2/24

5:45 am-1:18 pm

1 stop5h 33m

$297

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

lun. 3/3

6:10 am-8:32 am

Nonstop4h 22m

Los Angeles

lun. 3/10

12:59 am-8:48 am

1 stop5h 49m

$332

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

lun. 3/3

7:00 am-2:55 pm

1 stop9h 55m

Los Angeles

jue. 3/6

6:00 am-11:59 pm

2 stops15h 59m

$335

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

jue. 2/20

9:00 am-2:37 pm

1 stop7h 37m

Los Angeles

dom. 2/23

12:55 am-9:51 am

1 stop6h 56m

$337

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

vie. 4/4

6:51 pm-12:25 am

1 stop7h 34m

$91

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

mar. 3/4

4:00 pm-6:44 pm

3 stops28h 44m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 16 results
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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.

Travel insights for flights from St. Louis to Pasadena

Get recent, data-driven insights about flights from St. Louis to Pasadena including ideal travel times, pricing trends, and more.

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 January 24, 2025.

The best time to book flights from St. Louis to Pasadena is 77 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 $344). 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 enero 30, 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 January 26, 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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 enero 30, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

8.0
Very good

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Entertainment

7.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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 3 daily outbound flights to Pasadena from 7 different airlines.

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

  • 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 ($91), Spirit Airlines ($97), and American Airlines ($139).

  • 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: Qatar Airways (99%), Japan Airlines (92%), Alaska Airlines( 92%).

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

    The cheapest flight price from St. Louis to Pasadena is $182. On average you can expect to pay $1,033. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $179.

  • 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 $344). 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

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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$196FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$119Average$234FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$269Average$419FlexibilityNo cancel feeOn-time71%
DeltaCheapest$275Average$419FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$283Average$449FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$310Average$545FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$332Average$604FlexibilityNo cancel feeOn-time75%
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