HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Port St. Lucie

$53+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — MCO
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Port St. Lucie with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 5, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$96
(Priceline)

One-way from

$53
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$246
Provider with most accurate pricing for Chicago (CHI)-Fort Lauderdale flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Fort Lauderdale flights.
Search Deals
From Chicago (CHI) to Port St. Lucie
Search Deals
One-way flight from Chicago (CHI) to Port St. Lucie
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 5, 2025.

This Priceline deal was found by Cheapflights users on 11/2. 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.
Sun 12/143:20 pmORD - FLL
Nonstop3h 16mMultiple Airlines
Wed 12/248:56 amFLL - ORD
Nonstop3h 18mMultiple Airlines
Deal found 11/2$96
This Priceline deal was found by Cheapflights users on 11/4. 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 12/23:43 pmORD - FLL
Nonstop3h 13mMultiple Airlines
Tue 12/910:48 amFLL - ORD
1 stop5h 24mMultiple Airlines
Deal found 11/4$97
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/54:49 pmORD - FLL
1 stop6h 08mSpirit Airlines
Tue 12/95:36 pmFLL - ORD
Nonstop3h 25mSpirit Airlines
Deal found 11/5$98
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/183:26 pmORD - FLL
Nonstop3h 11mMultiple Airlines
Thu 11/271:57 pmFLL - ORD
Nonstop3h 28mMultiple Airlines
Deal found 11/3$99
This Spirit deal was found by Cheapflights users on 11/4. 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.
Mon 12/87:10 amORD - FLL
Nonstop3h 09mSpirit Airlines
Fri 12/128:50 amFLL - ORD
Nonstop3h 18mSpirit Airlines
Deal found 11/4$100
This Spirit deal was found by Cheapflights users on 11/4. 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 12/47:10 amORD - FLL
Nonstop3h 09mSpirit Airlines
Thu 12/115:36 pmFLL - ORD
Nonstop3h 25mSpirit Airlines
Deal found 11/4$101
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/1711:24 amORD - FLL
1 stop7h 42mFrontier
Tue 11/254:53 pmFLL - ORD
Nonstop3h 28mFrontier
Deal found 11/3$102
This Priceline deal was found by Cheapflights users on 11/4. 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.
Wed 12/38:00 amORD - FLL
1 stop9h 19mMultiple Airlines
Fri 12/59:45 pmFLL - ORD
Nonstop3h 24mMultiple Airlines
Deal found 11/4$103
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/175:10 amORD - FLL
Nonstop3h 04mMultiple Airlines
Tue 11/254:53 pmFLL - ORD
Nonstop3h 28mMultiple Airlines
Deal found 11/3$104
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/116:15 amORD - FLL
Nonstop3h 16mMultiple Airlines
Mon 12/157:59 amFLL - ORD
1 stop10h 28mMultiple Airlines
Deal found 11/4$105
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/2310:12 amORD - FLL
Nonstop3h 08mSpirit Airlines
Wed 12/37:00 amFLL - ORD
Nonstop3h 17mSpirit Airlines
Deal found 11/3$106
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 11/1810:52 amORD - FLL
Nonstop3h 08mSpirit Airlines
Tue 11/1810:07 pmFLL - ORD
Nonstop3h 20mSpirit Airlines
Deal found 11/3$107

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 November 5, 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

Tue 11/18

5:10 am-9:14 am

Nonstop3h 04m

Fort Lauderdale

Mon 11/24

5:20 pm-11:06 pm

1 stop6h 46m

$135

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

Wed 12/3

6:30 pm-10:35 pm

Nonstop3h 05m

Fort Lauderdale

Wed 12/10

1:00 pm-7:10 pm

2 stops7h 10m

$163

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Thu 12/4

1:52 pm-10:57 pm

1 stop8h 05m

Fort Lauderdale

Mon 12/15

12:14 pm-9:48 pm

1 stop10h 34m

$165

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Sat 11/22

8:20 am-9:37 pm

1 stop12h 17m

Fort Lauderdale

Wed 11/26

7:00 am-9:17 am

Nonstop3h 17m

$166

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

Tue 12/2

8:20 am-12:20 pm

Nonstop3h 00m

Fort Lauderdale

Tue 12/9

6:15 am-12:45 pm

1 stop7h 30m

$172

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Wed 2/11

5:32 pm-9:40 pm

Nonstop3h 08m

Fort Lauderdale

Sun 2/15

6:45 am-2:28 pm

1 stop8h 43m

$174

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

Fri 12/12

2:50 pm-8:55 pm

1 stop5h 05m

Fort Lauderdale

Sun 12/14

5:30 am-7:35 am

Nonstop3h 05m

$193

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Thu 2/5

7:03 am-11:15 am

Nonstop3h 12m

Fort Lauderdale

Mon 2/9

7:00 am-9:27 am

Nonstop3h 27m

$194

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

Wed 12/24

1:34 pm-7:12 pm

1 stop4h 38m

Fort Lauderdale

Wed 12/31

6:30 am-12:39 pm

1 stop7h 09m

$209

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

Sat 1/24

8:20 am-5:05 pm

1 stop7h 45m

Fort Lauderdale

Sat 1/31

6:40 am-8:50 am

Nonstop3h 10m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 42 results
1
2
3
...
5

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 October 31, 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, February is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $47). Flying from Chicago to Port St. Lucie in June is currently the most expensive (average of $112). 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 November 5, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 19% on flights from Chicago to Port St. Lucie by exploring options for tickets in the evening.

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 November 2, 2025.

Travelers seeking maximum savings on their Chicago to Port St. Lucie flight should consider departing on Friday evenings 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 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 November 5, 2025.

The most flights from CHI to LU5 are scheduled on a Monday (60 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 November 5, 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
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
8,115 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
3,116 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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 3h 04m. Fly via Spirit Airlines, Southwest, or United Airlines to get the fastest option. Chicago and Port St. Lucie are separated by a distance of 1183 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $57. Southwest flights start at $66 while deals on United Airlines start at $79 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 Spirit Airlines (92%), ITA Airways (91%) or Copa Airlines (89%) 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 $40. On average you can expect to pay $515. The most popular route, (Chicago O'Hare Intl - Fort Lauderdale), can usually be booked for $59.

  • 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, February is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $47). Flying from Chicago to Port St. Lucie in June is currently the most expensive (average of $112). 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

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 Chicago to Port St. Lucie

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Miami flights
O'Hare Intl to Orlando flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Tampa flights
O'Hare Intl to Fort Myers flights
Midway to Orlando flights
Midway to Miami flights
O'Hare Intl to West Palm Beach flights
Midway to Fort Lauderdale flights
O'Hare Intl to Sarasota flights
Midway to Tampa flights
O'Hare Intl to Jacksonville flights
O'Hare Intl to Key West flights
Midway to Fort Myers flights
St. Louis to Orlando flights
St. Louis to Miami flights
O'Hare Intl to Pensacola flights
Midway to West Palm Beach flights
St. Louis to Tampa flights
Midway to Sarasota flights
O'Hare Intl to Panama City flights
St. Louis to Fort Lauderdale flights
Midway to Jacksonville flights
Moline to Orlando flights
Midway to Key West flights
St. Louis to Key West flights
St. Louis to Sarasota flights
St. Louis to Fort Myers flights
Rockford to Orlando Sanford Intl flights
Midway to Pensacola flights
Peoria to Orlando flights
Moline to Tampa flights
Midway to Panama City flights
St. Louis to Jacksonville flights
Rockford to St Petersburg flights
Peoria to Miami flights
O'Hare Intl to Daytona Beach flights
Peoria to Fort Lauderdale flights
St. Louis to Pensacola flights
Rockford to Punta Gorda flights
Moline to Fort Myers flights
Peoria to Fort Myers flights
O'Hare Intl to Valparaiso flights
O'Hare Intl to St Petersburg flights
Moline to Fort Lauderdale flights
Bloomington to Orlando flights
St. Louis to West Palm Beach flights
Midway to Punta Gorda flights
Moline to Sarasota flights
O'Hare Intl to Tallahassee flights

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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$183FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$42Average$198FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$153Average$356FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$383FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$172Average$357FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$416FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.