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Port St. Lucie

$36+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — MCO
מרץ 27 — אפר' 31
ו' 3/27
ו' 4/3
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Port St. Lucie are usually found in October or September, booked 36 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap 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 פברואר 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/24. 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.
א' 3/89:15 am
ORD
-
FLL
Nonstop3h 13m
Multiple Airlines
ג' 3/109:26 pm
FLL
-
ORD
Nonstop3h 21m
Multiple Airlines
Deal found 2/24$86
This Spirit deal was found by Cheapflights users on 2/22. 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.
ב' 3/27:00 am
ORD
-
FLL
Nonstop3h 15m
Spirit Airlines
ו' 3/69:26 pm
FLL
-
ORD
Nonstop3h 21m
Spirit Airlines
Deal found 2/22$87
This Frontier deal was found by Cheapflights users on 2/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 3/13:40 pm
ORD
-
FLL
Nonstop3h 13m
Frontier
ג' 3/178:00 am
FLL
-
ORD
Nonstop3h 36m
Frontier
Deal found 2/25$88
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
ש' 2/288:16 pm
ORD
-
FLL
Nonstop3h 17m
Multiple Airlines
ה' 3/58:29 pm
FLL
-
ORD
Nonstop3h 36m
Multiple Airlines
Deal found 2/23$89
This Kiwi.com deal was found by Cheapflights users on 2/22. 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.
ש' 2/2812:06 pm
ORD
-
FLL
Nonstop3h 13m
Frontier
ה' 3/58:29 pm
FLL
-
ORD
Nonstop3h 36m
Frontier
Deal found 2/22$90
This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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.
ד' 4/155:34 pm
ORD
-
FLL
Nonstop3h 06m
Spirit Airlines
ב' 4/209:50 pm
FLL
-
ORD
Nonstop3h 24m
Spirit Airlines
Deal found 2/25$91
This Frontier deal was found by Cheapflights users on 2/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ש' 4/1112:25 pm
ORD
-
FLL
Nonstop3h 17m
Frontier
ש' 4/186:39 pm
FLL
-
ORD
Nonstop3h 38m
Frontier
Deal found 2/25$92
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ש' 4/181:27 pm
ORD
-
FLL
Nonstop3h 17m
Frontier
ב' 4/209:19 pm
FLL
-
ORD
Nonstop3h 38m
Frontier
Deal found 2/24$93
This Expedia deal was found by Cheapflights users on 2/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ש' 5/91:27 pm
ORD
-
FLL
Nonstop3h 17m
Multiple Airlines
ג' 5/128:04 am
FLL
-
ORD
1 stop5h 41m
Multiple Airlines
Deal found 2/23$94
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
ש' 5/91:27 pm
ORD
-
FLL
Nonstop3h 17m
Multiple Airlines
ש' 5/99:50 pm
FLL
-
ORD
Nonstop3h 24m
Multiple Airlines
Deal found 2/23$95
This Spirit deal was found by Cheapflights users on 2/23. 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.
ו' 3/136:10 pm
ORD
-
FLL
Nonstop3h 05m
Spirit Airlines
ג' 3/175:28 pm
FLL
-
ORD
Nonstop3h 23m
Spirit Airlines
Deal found 2/23$96
This Super.com deal was found by Cheapflights users on 2/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ה' 3/53:21 pm
ORD
-
FLL
Nonstop3h 13m
Frontier
ה' 3/122:23 pm
FLL
-
ORD
Nonstop3h 36m
Frontier
Deal found 2/24$97

Find 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 פברואר 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$86
(Kiwi.com)

One-way from

$36
(Super.com)

Popular in

December

Cheapest in

October

Average price

$255
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. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 פברואר 25, 2026.
Use the filters below to find and compare flights from Chicago to Port St. Lucie that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

ב' 3/2

4:43 pm-8:52 pm

Nonstop3h 09m

Fort Lauderdale

ו' 3/6

8:54 am-11:22 am

Nonstop3h 28m

$87

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

ה' 4/23

7:06 am-11:10 am

Nonstop3h 04m

Fort Lauderdale

ב' 4/27

9:04 am-11:22 am

Nonstop3h 18m

$145

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

ו' 4/17

5:34 pm-9:40 pm

Nonstop3h 06m

Fort Lauderdale

ש' 4/18

8:04 am-12:45 pm

1 stop5h 41m

$158

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

ג' 3/17

12:45 pm-9:41 pm

1 stop7h 56m

Fort Lauderdale

ו' 3/20

8:54 am-11:17 am

Nonstop3h 23m

$158

ChicagoFort Lauderdale

ORD - FLL

ORDFLL

Chicago O'Hare Intl

ו' 5/15

5:34 pm-9:40 pm

Nonstop3h 06m

Fort Lauderdale

א' 5/24

5:20 pm-7:47 pm

Nonstop3h 27m

$170

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

ו' 4/24

7:35 pm-11:30 pm

Nonstop2h 55m

Fort Lauderdale

ב' 4/27

6:55 am-9:05 am

Nonstop3h 10m

$197

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

א' 4/19

7:35 am-11:30 am

Nonstop2h 55m

Fort Lauderdale

ד' 4/22

6:15 am-11:40 am

1 stop6h 25m

$271

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

ה' 4/9

7:35 pm-11:30 pm

Nonstop2h 55m

Fort Lauderdale

ד' 4/15

7:00 am-12:00 pm

2 stops6h 00m

$277

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

ב' 5/18

7:35 pm-11:30 pm

Nonstop2h 55m

Fort Lauderdale

ב' 6/1

7:15 pm-11:30 pm

1 stop5h 15m

$285

ChicagoFort Lauderdale

MDW - FLL

MDWFLL

Chicago Midway

ש' 3/14

8:20 pm-12:15 am

Nonstop2h 55m

Fort Lauderdale

ה' 3/19

7:05 pm-11:35 pm

1 stop5h 30m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 45 resultsSorted by cheapest first
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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 February 20, 2026.

Booking 36 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, March is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $55). Flying from Chicago to Port St. Lucie in June is currently the most expensive (average of $114). 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 פברואר 25, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Chicago to Port St. Lucie by exploring options for tickets in the morning.

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 February 21, 2026.

Travelers seeking maximum savings on their Chicago to Port St. Lucie flight should consider departing on Friday mornings when fares are most often at their lowest. Tuesday 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 פברואר 25, 2026.

The most flights from CHI to LU5 are scheduled on a Wednesday (74 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (39 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 פברואר 25, 2026.
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
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,300 reviews
Southwest
8.0
Very good
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
9,345 reviews
Southwest
8.0
Very good
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
11,345 reviews
Southwest
8.0
Very good
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
8,489 reviews
Southwest
8.0
Very good
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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
5.7
Fair
3,041 reviews
Southwest
8.0
Very good
4,300 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

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 Frontier, which is currently one of the cheapest options available, starting at $29. Spirit Airlines flights start at $40 while deals on Allegiant Air start at $42 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 United Airlines (83%), Copa Airlines (81%) or SWISS (80%) 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 $49. On average you can expect to pay $509. The most popular route, (Chicago O'Hare Intl - Fort Lauderdale), can usually be booked for $64.

  • 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, March is the cheapest month in which you can book a flight from Chicago to Port St. Lucie (average of $55). Flying from Chicago to Port St. Lucie in June is currently the most expensive (average of $114). 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.

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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 7 airlines flying from Chicago to Port St. Lucie

Discover the top 7 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 פברואר 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$170FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$75Average$195FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$84Average$149FlexibilityNo cancel feeOn-time88%
DeltaCheapest$98Average$416FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$155Average$351FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$156Average$342FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$160Average$352FlexibilityNo cancel feeOn-time69%

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