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

Flights from Lambert-St Louis to Pasadena have been viewed 30 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 ($88), JetBlue ($124), and United Airlines ($148).

Weekly flight availability from St. Louis to Pasadena

The most flights from STL to P4S are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

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.

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).

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

The cheapest flight price from St. Louis to Pasadena is $138. On average you can expect to pay $1,685. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $242.

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: Japan Airlines (90%), Air Tahiti Nui (90%), Malaysia Airlines( 90%).

What are the most popular airlines that fly from St. Louis to Pasadena?

Southwest, American Airlines and Frontier are the most popular airlines when flying from St. Louis to Pasadena.

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 7 daily outbound flights to Pasadena from 7 different airlines.

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.

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Cheapflights Tip: The best prices from Lambert-St Louis to Pasadena are usually found in February or January, booked 86 days in advance, depart on a Friday or Thursday and return on a Tuesday

Find flight deals from St. Louis to Pasadena

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Popular in	August
Cheapest in	February
Average price	$408

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Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).

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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Everything you need to know about your flight from St. Louis to Pasadena

Prices

Airlines

What is the cheapest time of day to fly from STL to P4S?

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 34% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from St. Louis to Pasadena?

Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Pasadena

Get a feel of what it's like to fly with Southwest,Delta, andUnited 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

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Southwest

7.9

Good

4,227 reviews

Southwest

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Delta

7.8

Good

8,654 reviews

Southwest

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

United Airlines

7.4

Good

10,332 reviews

Southwest

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

American Airlines

7.0

Good

12,152 reviews

Southwest

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Frontier

5.6

Fair

2,551 reviews

Southwest

7.9

Good

4,227 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Related info for your journey

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 7 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 30 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 ($88), JetBlue ($124), and United Airlines ($148).
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: Japan Airlines (90%), Air Tahiti Nui (90%), Malaysia Airlines( 90%).
What are the cheapest flights from St. Louis to Pasadena?
The cheapest flight price from St. Louis to Pasadena is $138. On average you can expect to pay $1,685. The most popular route, (Lambert-St Louis - Los Angeles), can usually be booked for $242.
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.

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Top 7 airlines flying from St. Louis to Pasadena

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$139	Average$275	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$228	Average$402	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$236	Average$364	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$275	Average$473	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$292	Average$457	FlexibilityNo cancel fee	On-time63%
JetBlue	Cheapest$304	Average$384	FlexibilityNo cancel fee	On-time62%
Alaska Airlines	Cheapest$347	Average$625	FlexibilityNo cancel fee	On-time75%

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Cheap flights from St. Louis (STL) to Pasadena, CA

Find cheap flights from St. Louis to Pasadena with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Louis to Pasadena

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Cheapflights Insights

What is the cheapest time of day to fly from STL to P4S?

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 34% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from St. Louis to Pasadena?

Travelers seeking maximum savings on their St. Louis to Pasadena flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday 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

The most flights from STL to P4S are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Pasadena

Get a feel of what it's like to fly with Southwest,Delta, andUnited 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.

Related info for your journey

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

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Pasadena

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Complete your trip

Complete your trip to Pasadena by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to Pasadena by cabin class

Find flights from St. Louis to Pasadena, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and Pasadena flights

Browse other St. Louis and Pasadena flight options. Last updated on October 10, 2026.

Other flights from St. Louis

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Top 7 airlines flying from St. Louis to Pasadena

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