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Port St. Lucie

$63+ Cheap flights from Chicago (CHI) to Port St. Lucie, FL

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — MCO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Port St. Lucie are usually found in September or October, booked 25 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Chicago to Port St. Lucie

Keep the following information in mind while searching for Chicago to Port St. Lucie flight deals. Data was last updated September 17, 2025.

Round-trip from

$97
(Cheapflightsfares)

One-way from

$63
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$208
From Chicago (CHI) to Port St. Lucie
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One-way flight from Chicago (CHI) to Port St. Lucie
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 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 Chicago to Port St. Lucie

Cheapest flights from Chicago to Port St. Lucie
Explore the most affordable flight options available from Chicago to Port St. Lucie. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Thu 10/97:43 pmORD - FLL
Nonstop3h 06mSpirit Airlines
Fri 10/179:30 pmFLL - ORD
Nonstop3h 15mSpirit Airlines
Deal found 9/15$97
This Spirit deal was found by Cheapflights users on 9/16. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:57 amORD - FLL
Nonstop3h 05mSpirit Airlines
Fri 10/104:18 pmFLL - ORD
Nonstop3h 20mSpirit Airlines
Deal found 9/16$98
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 10/75:05 amORD - FLL
Nonstop3h 01mSpirit Airlines
Wed 10/87:01 amFLL - ORD
1 stop11h 52mSpirit Airlines
Deal found 9/15$99
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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.
Thu 10/167:43 pmORD - FLL
Nonstop3h 06mSpirit Airlines
Sun 10/198:33 amFLL - ORD
Nonstop3h 17mSpirit Airlines
Deal found 9/16$101
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Sun 10/127:43 pmORD - FLL
Nonstop3h 06mSpirit Airlines
Sat 10/189:30 pmFLL - ORD
Nonstop3h 15mSpirit Airlines
Deal found 9/15$102
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:57 amORD - FLL
Nonstop3h 05mSpirit Airlines
Mon 10/68:33 amFLL - ORD
Nonstop3h 17mSpirit Airlines
Deal found 9/15$103
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:05 amORD - FLL
Nonstop3h 01mMultiple Airlines
Wed 10/811:00 amFLL - ORD
1 stop6h 40mMultiple Airlines
Deal found 9/15$104
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Thu 10/1611:55 amORD - FLL
Nonstop3h 02mSpirit Airlines
Mon 10/208:33 amFLL - ORD
Nonstop3h 17mSpirit Airlines
Deal found 9/17$105
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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.
Sun 10/55:05 amORD - FLL
Nonstop3h 01mSpirit Airlines
Fri 10/109:30 pmFLL - ORD
Nonstop3h 15mSpirit Airlines
Deal found 9/16$106
This Spirit deal was found by Cheapflights users on 9/17. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:57 amORD - FLL
Nonstop3h 05mSpirit Airlines
Sun 10/128:33 amFLL - ORD
Nonstop3h 17mSpirit Airlines
Deal found 9/17$107
This Spirit deal was found by Cheapflights users on 9/16. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:05 amORD - FLL
Nonstop3h 04mSpirit Airlines
Fri 10/33:14 pmFLL - ORD
Nonstop3h 25mSpirit Airlines
Deal found 9/16$108
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:15 pmMDW - FLL
1 stop5h 37mFrontier
Thu 10/26:54 pmFLL - MDW
1 stop5h 47mFrontier
Deal found 9/15$143

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Port St. Lucie 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 17, 2025.
Use the filters below to find and compare flights from Chicago to Port St. Lucie that are best for you.

Fly from

Chicago

Fly to

Port St. Lucie

Route

Depart

Return

Price

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Sat 10/4

5:05 am-9:09 am

Nonstop3h 04m

Fort Lauderdale

Tue 10/7

4:18 pm-6:38 pm

Nonstop3h 20m

$98

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Thu 12/4

8:41 am-12:45 pm

Nonstop3h 04m

Fort Lauderdale

Sat 12/6

6:35 pm-9:00 pm

Nonstop3h 25m

$98

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Mon 11/10

10:49 am-2:53 pm

Nonstop3h 04m

Fort Lauderdale

Tue 11/11

9:25 pm-11:42 pm

Nonstop3h 17m

$98

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Thu 10/30

11:55 am-3:57 pm

Nonstop3h 02m

Fort Lauderdale

Sat 11/1

4:18 pm-6:38 pm

Nonstop3h 20m

$98

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Mon 11/10

10:49 am-2:53 pm

Nonstop3h 04m

Fort Lauderdale

Fri 11/14

3:58 pm-6:23 pm

Nonstop3h 25m

$106

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Sun 10/26

11:55 am-3:57 pm

Nonstop3h 02m

Fort Lauderdale

Sat 11/1

8:33 am-10:50 am

Nonstop3h 17m

$106

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Sat 9/27

5:45 pm-11:27 pm

1 stop4h 42m

Fort Lauderdale

Tue 9/30

8:25 pm-10:48 pm

Nonstop3h 23m

$133

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Mon 11/10

7:00 am-3:37 pm

1 stop7h 37m

Fort Lauderdale

Wed 11/12

9:25 pm-11:42 pm

Nonstop3h 17m

$136

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Sat 12/6

8:41 am-12:45 pm

Nonstop3h 04m

Fort Lauderdale

Sun 12/14

9:35 pm-9:10 am

1 stop12h 35m

$136

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Fri 11/7

8:30 pm-7:47 am

1 stop10h 17m

Fort Lauderdale

Tue 11/11

9:25 pm-11:42 pm

Nonstop3h 17m

$136

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 42 results
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Best time to book a flight from Chicago to Port St. Lucie

Have a flexible travel schedule? Discover the best time to fly to Port St. Lucie from Chicago 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 Chicago to Port St. Lucie

How far ahead should I book a flight from Chicago to Port St. Lucie?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Port St. Lucie. Price data was last updated on September 12, 2025.

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Port St. Lucie. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to Port St. Lucie?

Currently, May is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $206). Flying from Chicago to Port St. Lucie in November is currently the most expensive (average of $289). 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 CHI to LU5?

Find hourly flight availability from Chicago to Port St. Lucie. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Port St. Lucie as you normally would.

What is the cheapest day to fly from Chicago to Port St. Lucie?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Port St. Lucie. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to Port St. Lucie flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Port St. Lucie

Explore weekly flight availability from Chicago to Port St. Lucie. 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 17, 2025.

The most flights from CHI to LU5 are scheduled on a Monday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 on average).

How much does it cost to fly round-trip from Chicago to Port St. Lucie?

Reviews of airlines servicing Port St. Lucie

Get insights into the airlines that provide service to Port St. Lucie. 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 Port St. Lucie. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Chicago to Port St. Lucie by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Port St. Lucie. 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 Chicago to Port St. Lucie?

    There are many flights that can get you from Chicago to Port St. Lucie in 2h 55m. Fly via Spirit Airlines or Southwest to get the fastest option. Chicago and Port St. Lucie are separated by a distance of 1168 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Chicago to Port St. Lucie one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $77. Southwest flights start at $77 while deals on Spirit Airlines start at $86 one-way.

  • What are the most reliable airlines from Chicago to Port St. Lucie?

    No one likes to see their flight delayed. When booking a flight from Chicago to Port St. Lucie consider choosing Copa Airlines (84%), Spirit Airlines (82%) or Air Canada (78%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Port St. Lucie?

    The cheapest flight price from Chicago to Port St. Lucie is $45. On average you can expect to pay $434. The most popular route, (Chicago O'Hare Intl - Fort Lauderdale), can usually be booked for $86.

  • Can I find deals for flights from Chicago to Port St. Lucie that include hotel bookings?

    Yes. In addition to deals on Chicago to Port St. Lucie flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Port St. Lucie?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Port St. Lucie.

  • Can I find deals for business class flights from Chicago to Port St. Lucie?

    Yes. Cheapflights offers flight deals from Chicago to Port St. Lucie 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 Chicago to Port St. Lucie?

    Currently, May is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $206). Flying from Chicago to Port St. Lucie in November is currently the most expensive (average of $289). 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 Chicago to Port St. Lucie

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Chicago to Port St. Lucie

Discover the top 6 airlines that operate flights from Chicago to Port St. Lucie. 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$174FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$42Average$202FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$157Average$394FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$176Average$368FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$178Average$362FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$392FlexibilityNo cancel feeOn-timeN/A

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