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Pasadena

$71+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$123
(Cheapflightsfares)

One-way from

$71
(Expedia)

Popular in

December

Cheapest in

January

Average price

$250
From Illinois to Pasadena
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One-way flight from Illinois to Pasadena
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Highest demand for flights based on searches. 9% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Wed 10/19:00 amORD - LAX
1 stop6h 33mMultiple Airlines
Fri 10/34:21 pmLAX - ORD
Nonstop4h 22mMultiple Airlines
Deal found 9/12$123
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Wed 10/19:00 amORD - LAX
1 stop11h 55mSpirit Airlines
Thu 10/26:15 amLAX - ORD
1 stop13h 21mSpirit Airlines
Deal found 9/13$124
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/312:54 pmORD - LAX
Nonstop4h 30mSpirit Airlines
Sat 10/119:22 amLAX - ORD
1 stop12h 55mSpirit Airlines
Deal found 9/13$126
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Tue 9/3011:15 amORD - LAX
1 stop9h 40mMultiple Airlines
Thu 10/21:45 pmLAX - ORD
1 stop6h 55mMultiple Airlines
Deal found 9/12$127
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/26:30 amORD - LAX
Nonstop4h 29mMultiple Airlines
Thu 10/212:05 pmLAX - ORD
Nonstop4h 09mMultiple Airlines
Deal found 9/12$128
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/312:54 pmORD - LAX
Nonstop4h 30mMultiple Airlines
Tue 10/71:15 pmLAX - ORD
1 stop8h 38mMultiple Airlines
Deal found 9/13$129
This eDestinos deal was found by Cheapflights users on 9/13. 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 10/47:00 amORD - LAX
Nonstop4h 29mFrontier
Tue 10/76:45 amLAX - ORD
1 stop15h 08mFrontier
Deal found 9/13$130
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/36:30 amORD - LAX
Nonstop4h 29mFrontier
Sat 10/44:51 pmLAX - ORD
Nonstop4h 22mFrontier
Deal found 9/12$131
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/27:09 pmORD - LAX
Nonstop4h 31mMultiple Airlines
Fri 10/31:45 pmLAX - ORD
1 stop6h 55mMultiple Airlines
Deal found 9/12$133
This eDestinos deal was found by Cheapflights users on 9/13. 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 9/277:09 pmORD - LAX
Nonstop4h 31mSpirit Airlines
Thu 10/27:50 pmLAX - ORD
1 stop14h 01mSpirit Airlines
Deal found 9/13$134
This CheapOair deal was found by Cheapflights users on 9/12. 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.
Thu 10/236:24 pmMDW - LAX
1 stop8h 01mFrontier
Sun 10/266:44 amLAX - MDW
1 stop15h 52mFrontier
Deal found 9/12$157
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:30 pmMDW - LAX
1 stop21h 35mFrontier
Sun 11/25:44 amLAX - MDW
1 stop26h 46mFrontier
Deal found 9/13$158

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 September 15, 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

MDW - LAX

MDWLAX

Chicago Midway

Sat 11/1

8:25 pm-10:55 pm

Nonstop4h 30m

Los Angeles

Sat 11/8

11:15 pm-5:15 am

Nonstop4h 00m

$197

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Thu 10/23

1:05 pm-3:34 pm

Nonstop4h 29m

Los Angeles

Sun 10/26

11:20 pm-5:16 am

Nonstop3h 56m

$197

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Wed 11/12

8:55 pm-11:25 pm

Nonstop4h 30m

Los Angeles

Sat 11/15

11:15 pm-5:15 am

Nonstop4h 00m

$197

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 11/12

8:14 pm-10:57 pm

Nonstop4h 43m

Los Angeles

Fri 11/14

12:25 am-6:29 am

Nonstop4h 04m

$197

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Tue 10/28

5:55 pm-8:25 pm

Nonstop4h 30m

Los Angeles

Tue 10/28

11:00 pm-5:00 am

Nonstop4h 00m

$197

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 2/21

5:55 pm-10:20 pm

1 stop6h 25m

Los Angeles

Mon 2/23

8:40 pm-5:05 am

1 stop6h 25m

$201

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 11/5

1:00 pm-3:30 pm

Nonstop4h 30m

Los Angeles

Sat 11/8

12:25 am-6:29 am

Nonstop4h 04m

$215

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Fri 10/24

9:25 pm-11:55 pm

Nonstop4h 30m

Los Angeles

Tue 10/28

11:00 pm-5:00 am

Nonstop4h 00m

$215

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Wed 11/5

8:55 pm-11:25 pm

Nonstop4h 30m

Los Angeles

Mon 11/10

11:15 pm-5:15 am

Nonstop4h 00m

$215

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 11/8

9:20 am-3:00 pm

1 stop7h 40m

Los Angeles

Sat 11/8

9:45 pm-9:52 am

1 stop10h 07m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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, January is the cheapest month in which you can book a flight from Illinois to Pasadena (average of $246). Flying from Illinois to Pasadena in March is currently the most expensive (average of $325). 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Pasadena as you normally would.

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 September 15, 2025.

The most flights from USIL to P4S are scheduled on a Monday (126 on average). You will have fewer flight options on Tuesday, 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?

    Southwest, United Airlines, and Hawaiian Airlines can get you from Illinois to Pasadena in just under 4h 29m. Your travel time can differ by up to 5h 11m. Airlines will cover a distance of 1740 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Pasadena one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $93. However, be on the lookout for offers from United Airlines and Frontier, as they are both options that can get you from Illinois to Pasadena for a low price.

  • 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 Austrian Airlines (81%), Brussels Airlines (78%) and Frontier (78%).

  • What are the cheapest flights from Illinois to Pasadena?

    While on average a flight from Illinois to Pasadena is generally $826, our data shows the cheapest flight currently is $56. When looking at the most popular route, (Chicago O'Hare Intl - Los Angeles), you can expect to pay $114 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, January is the cheapest month in which you can book a flight from Illinois to Pasadena (average of $246). Flying from Illinois to Pasadena in March is currently the most expensive (average of $325). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$221FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$207FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$304FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$147Average$326FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$152Average$435FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$167Average$430FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$189Average$493FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$454FlexibilityNo cancel feeOn-time69%

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