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Pasadena

$79+ Cheap flights from Illinois 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find flight deals from Illinois to Pasadena

Cheapest flights from Illinois to Pasadena
Explore the most affordable flight options available from Illinois to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This eDestinos deal was found by Cheapflights users on 10/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:30 amORD - LAX
Nonstop4h 26mFrontier
Wed 11/123:27 pmLAX - ORD
2 stops31h 32mFrontier
Deal found 10/15$144
This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
Sun 11/166:30 amMDW - LAX
1 stop8h 36mFrontier
Wed 11/197:23 pmLAX - MDW
1 stop14h 07mFrontier
Deal found 10/14$146
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 10/306:40 amORD - LAX
2 stops27h 25mFrontier
Mon 11/34:42 pmLAX - ORD
Nonstop4h 18mFrontier
Deal found 10/15$146
This CheapOair deal was found by Cheapflights users on 10/15. 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 10/297:20 amORD - LAX
1 stop7h 58mFrontier
Sun 11/24:39 pmLAX - ORD
Nonstop4h 18mFrontier
Deal found 10/15$147
This CheapOair deal was found by Cheapflights users on 10/16. 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.
Sat 11/16:30 amORD - LAX
Nonstop4h 26mFrontier
Tue 11/47:00 amLAX - ORD
1 stop6h 39mFrontier
Deal found 10/16$148
This Priceline deal was found by Cheapflights users on 10/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:30 amORD - LAX
Nonstop4h 26mFrontier
Mon 11/174:42 pmLAX - ORD
Nonstop4h 18mFrontier
Deal found 10/16$149
This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:22 pmORD - LAX
Nonstop4h 37mSpirit Airlines
Sun 11/91:20 amLAX - ORD
Nonstop4h 08mSpirit Airlines
Deal found 10/15$150
This Cheapflightsfares deal was found by Cheapflights users on 10/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:22 pmORD - LAX
Nonstop4h 37mSpirit Airlines
Sat 11/2212:19 amLAX - ORD
Nonstop4h 06mSpirit Airlines
Deal found 10/16$151
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 11/36:20 amMDW - LAX
1 stop8h 06mFrontier
Wed 11/52:48 pmLAX - MDW
1 stop18h 42mFrontier
Deal found 10/16$153
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Fri 11/149:22 pmORD - LAX
Nonstop4h 37mMultiple Airlines
Mon 11/1712:42 pmLAX - ORD
1 stop10h 07mMultiple Airlines
Deal found 10/16$153
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 11/1312:30 pmMDW - LAX
1 stop13h 55mFrontier
Sun 11/1612:37 pmLAX - MDW
1 stop26h 15mFrontier
Deal found 10/16$154
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sun 11/210:43 pmORD - LAX
1 stop13h 01mMultiple Airlines
Tue 11/412:59 amLAX - ORD
1 stop11h 52mMultiple Airlines
Deal found 10/16$154

Cheap flight deals from Illinois to Pasadena

Keep the following information in mind while searching for Illinois to Pasadena flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$139
(Cheapflightsfares)

One-way from

$79
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$266
Provider with most accurate pricing for Chicago (CHI)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Los Angeles flights.
Search Deals
From Illinois to Pasadena
Search Deals
One-way flight from Illinois to Pasadena
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 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 Illinois 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 16, 2025.
Use the filters below to find and compare flights from Illinois to Pasadena that are best for you.

Fly from

Illinois

Fly to

Pasadena

Route

Depart

Return

Price

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Thu 12/11

8:12 pm-10:55 pm

Nonstop4h 43m

Los Angeles

Mon 12/15

12:25 am-6:19 am

Nonstop3h 54m

$159

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Thu 11/13

9:30 pm-11:55 pm

Nonstop4h 25m

Los Angeles

Mon 11/17

11:00 pm-5:00 am

Nonstop4h 00m

$169

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Thu 11/13

9:30 pm-11:55 pm

Nonstop4h 25m

Los Angeles

Sat 11/15

11:15 pm-5:15 am

Nonstop4h 00m

$169

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Fri 11/14

6:05 pm-8:40 pm

Nonstop4h 35m

Los Angeles

Mon 11/17

9:00 pm-5:05 am

1 stop6h 05m

$179

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 12/13

1:45 pm-9:40 pm

1 stop9h 55m

Los Angeles

Wed 12/17

7:30 am-3:25 pm

1 stop5h 55m

$179

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sun 11/16

6:05 am-8:35 am

Nonstop4h 30m

Los Angeles

Wed 11/19

9:00 pm-5:05 am

1 stop6h 05m

$206

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 12/17

2:15 pm-9:20 pm

2 stops9h 05m

Los Angeles

Wed 12/24

11:00 pm-12:15 pm

1 stop11h 15m

$209

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 12/10

3:35 pm-10:58 pm

1 stop9h 23m

Los Angeles

Tue 12/16

9:24 am-10:30 pm

1 stop11h 06m

$216

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 12/10

3:35 pm-10:58 pm

1 stop9h 23m

Los Angeles

Sat 12/13

7:00 pm-6:21 am

1 stop9h 21m

$216

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Fri 11/14

5:34 pm-11:21 pm

1 stop7h 47m

Los Angeles

Mon 11/17

10:30 pm-8:54 am

1 stop8h 24m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Pasadena

Have a flexible travel schedule? Discover the best time to fly to Pasadena from Illinois 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 Illinois to Pasadena

What is the cheapest month to book a flight from Illinois to Pasadena?

Currently, September is the cheapest month in which you can book a flight from Illinois to Pasadena (average of $80). Flying from Illinois to Pasadena in December is currently the most expensive (average of $154). 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 IL to P4S?

Find hourly flight availability from Illinois 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 16, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 37% on flights from Illinois to Pasadena by exploring options for tickets in the evening.

What is the cheapest day to fly from Illinois to Pasadena?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Pasadena. Price data was last updated on December 1, 2024.

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

Weekly flight availability from Illinois to Pasadena

Explore weekly flight availability from Illinois 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 October 16, 2025.

The most flights from USIL to P4S are scheduled on a Thursday (111 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (84 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Pasadena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Pasadena?

    United Airlines, Southwest, and Alaska Airlines can get you from Illinois to Pasadena in just under 4h 25m. Your travel time can differ by up to 4h 58m. Airlines will cover a distance of 1746 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Pasadena?

    The most popular route from Illinois to Pasadena is Chicago O'Hare Intl - Los Angeles. You may also consider Chicago Midway - Los Angeles or Lambert-St Louis - Los Angeles.

  • What are the most reliable airlines from Illinois to Pasadena?

    The top 3 most reliable airlines when flying from Illinois to Pasadena are Air China (85%), Spirit Airlines (85%) and Air New Zealand (84%).

  • What are the cheapest flights from Illinois to Pasadena?

    While on average a flight from Illinois to Pasadena is generally $870, our data shows the cheapest flight currently is $90. When looking at the most popular route, (Chicago O'Hare Intl - Los Angeles), you can expect to pay $71 for that flight.

  • Can I find deals for flights from Illinois to Pasadena that include hotel bookings?

    Yes. In addition to deals on Illinois to Pasadena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Pasadena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Pasadena.

  • Can I find deals for business class flights from Illinois to Pasadena?

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Pasadena?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Pasadena (average of $80). Flying from Illinois to Pasadena in December is currently the most expensive (average of $154). 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 Illinois to Pasadena

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Illinois to Pasadena

Discover the top 8 airlines that operate flights from Illinois 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$79Average$222FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$208FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$317FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$147Average$326FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$167Average$422FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$192Average$489FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$197Average$457FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$204Average$441FlexibilityNo cancel feeOn-time63%

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