$43+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — MCO
May 19 — May 261
Round-trip
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 36 days in advance, depart on a Thursday or Tuesday and return on a Friday
Cheap flight deals from Chicago to Port St. Lucie
Cheapest
Best
Last-minute
One-way
Cheapest flights from Chicago to Port St. LucieExplore 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 April 19, 2026.
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 April 19, 2026.
This Spirit deal was found by Cheapflights users on 4/16. 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.
Mon 4/275:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Fri 5/110:04 pm
FLL
- ORD
Nonstop3h 20m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$89
This Priceline deal was found by Cheapflights users on 4/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:05 am
ORD
- FLL
Nonstop3h 15m
Frontier
Tue 6/29:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/14![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:44 pm
ORD
- FLL
Nonstop3h 15m
Frontier
Wed 5/279:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/14![Frontier logo]()
$91
This Priceline deal was found by Cheapflights users on 4/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:16 am
ORD
- FLL
1 stop8h 24m
Multiple Airlines
Thu 5/78:54 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/17:15 pm
ORD
- FLL
Nonstop3h 09m
Multiple Airlines
Fri 5/89:15 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$93
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:28 am
ORD
- FLL
1 stop8h 35m
Spirit Airlines
Sat 5/27:05 am
FLL
- ORD
Nonstop3h 31m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$94
This Priceline deal was found by Cheapflights users on 4/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:52 am
ORD
- FLL
Nonstop3h 20m
Multiple Airlines
Tue 6/231:00 pm
FLL
- ORD
Nonstop3h 27m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Tue 5/121:18 pm
ORD
- FLL
Nonstop3h 02m
Multiple Airlines
Fri 5/159:15 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$96
This Frontier deal was found by Cheapflights users on 4/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:05 pm
ORD
- FLL
Nonstop3h 15m
Frontier
Thu 5/289:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/15![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Wed 4/155:05 am
ORD
- FLL
Nonstop3h 05m
Multiple Airlines
Thu 4/236:39 pm
FLL
- ORD
Nonstop3h 38m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 4/285:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Thu 4/306:15 am
FLL
- ORD
1 stop5h 08m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$100
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
MDW
- FLL
1 stop6h 14m
Frontier
Wed 5/202:18 pm
FLL
- MDW
1 stop8h 44m
Frontier
Deal found 4/19![Frontier logo]()
$143
Best flights from Chicago to Port St. LucieDiscover carefully curated flight deals from Chicago to Port St. Lucie that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 19, 2026.
Discover carefully curated flight deals from Chicago to Port St. Lucie that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 19, 2026.
This Spirit deal was found by Cheapflights users on 4/17. 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.
Tue 7/145:26 pm
ORD
- FLL
Nonstop3h 11m
Spirit Airlines
Fri 7/178:55 pm
FLL
- ORD
Nonstop3h 13m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$134
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
ORD
- FLL
1 stop7h 27m
Delta
Tue 6/24:32 pm
FLL
- ORD
1 stop6h 55m
Delta
Deal found 4/16![Delta logo]()
$187
This Southwest deal was found by Cheapflights users on 4/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/181:25 pm
MDW
- FLL
Nonstop2h 55m
Southwest
Thu 5/212:20 pm
FLL
- MDW
Nonstop3h 10m
Southwest
Deal found 4/14![Southwest logo]()
$199
This Spirit deal was found by Cheapflights users on 4/16. 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.
Mon 5/45:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Thu 5/76:30 am
FLL
- ORD
1 stop6h 53m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$149
This Spirit deal was found by Cheapflights users on 4/18. 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 6/47:33 pm
ORD
- FLL
Nonstop3h 09m
Spirit Airlines
Mon 6/86:05 am
FLL
- ORD
Nonstop3h 17m
Spirit Airlines
Deal found 4/18![Spirit Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:00 am
ORD
- FLL
1 stop7h 27m
Delta
Fri 6/56:00 am
FLL
- ORD
1 stop8h 01m
Delta
Deal found 4/16![Delta logo]()
$187
This Southwest deal was found by Cheapflights users on 4/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:35 pm
MDW
- FLL
Nonstop2h 55m
Southwest
Mon 5/186:55 am
FLL
- MDW
Nonstop3h 10m
Southwest
Deal found 4/14![Southwest logo]()
$199
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/279:17 am
MDW
- FLL
1 stop5h 58m
Delta
Tue 6/304:44 pm
FLL
- MDW
1 stop6h 33m
Delta
Deal found 4/16![Delta logo]()
$187
This Spirit deal was found by Cheapflights users on 4/14. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Thu 5/216:30 am
FLL
- ORD
1 stop6h 53m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$172
This Southwest deal was found by Cheapflights users on 4/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:15 am
MDW
- FLL
1 stop5h 30m
Southwest
Mon 5/186:10 am
FLL
- MDW
2 stops6h 40m
Southwest
Deal found 4/14![Southwest logo]()
$224
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:19 pm
ORD
- FLL
1 stop5h 19m
Delta
Sun 5/316:00 am
FLL
- ORD
1 stop8h 01m
Delta
Deal found 4/14![Delta logo]()
$207
This Spirit deal was found by Cheapflights users on 4/15. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:59 pm
ORD
- FLL
1 stop9h 00m
Spirit Airlines
Wed 6/178:55 am
FLL
- ORD
Nonstop3h 24m
Spirit Airlines
Deal found 4/15![Spirit Airlines logo]()
$202
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:22 pm
ORD
- FLL
1 stop5h 20m
Delta
Thu 7/93:32 pm
FLL
- ORD
1 stop7h 36m
Delta
Deal found 4/14![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 4/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:50 pm
MDW
- FLL
Nonstop2h 55m
Southwest
Sat 5/167:00 am
FLL
- MDW
Nonstop3h 10m
Southwest
Deal found 4/15![Southwest logo]()
$248
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:10 pm
MDW
- FLL
1 stop6h 47m
Delta
Sun 5/105:30 am
FLL
- MDW
1 stop5h 30m
Delta
Deal found 4/14![Delta logo]()
$207
This Spirit deal was found by Cheapflights users on 4/17. 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.
Mon 5/257:33 pm
ORD
- FLL
Nonstop3h 09m
Spirit Airlines
Sun 5/316:05 am
FLL
- ORD
Nonstop3h 17m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$224
This Southwest deal was found by Cheapflights users on 4/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:10 am
MDW
- FLL
2 stops7h 30m
Southwest
Mon 5/117:15 pm
FLL
- MDW
1 stop5h 15m
Southwest
Deal found 4/15![Southwest logo]()
$258
This Spirit deal was found by Cheapflights users on 4/16. 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 6/2412:58 pm
ORD
- FLL
1 stop9h 19m
Spirit Airlines
Sat 7/47:00 am
FLL
- ORD
1 stop10h 21m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/279:17 am
MDW
- FLL
1 stop5h 58m
Delta
Fri 7/311:27 am
FLL
- MDW
1 stop8h 04m
Delta
Deal found 4/15![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 4/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:20 pm
MDW
- FLL
1 stop4h 20m
Southwest
Tue 5/198:35 am
FLL
- MDW
2 stops8h 15m
Southwest
Deal found 4/18![Southwest logo]()
$282
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:22 pm
MDW
- FLL
1 stop4h 41m
Delta
Tue 6/26:40 pm
FLL
- MDW
2 stops19h 02m
Delta
Deal found 4/16![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/221:22 pm
MDW
- FLL
1 stop4h 41m
Delta
Sat 5/305:30 am
FLL
- MDW
1 stop5h 29m
Delta
Deal found 4/16![Delta logo]()
$290
Last-minute flights from Chicago to Port St. LucieDiscover last-minute flight deals from Chicago to Port St. Lucie. Data last updated April 19, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Port St. Lucie. Data last updated April 19, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Mon 4/2710:04 pm
FLL
- ORD
Nonstop3h 20m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$95
This Spirit deal was found by Cheapflights users on 4/16. 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.
Mon 4/275:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Fri 5/110:04 pm
FLL
- ORD
Nonstop3h 20m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$89
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 4/285:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Thu 4/306:15 am
FLL
- ORD
1 stop5h 08m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:28 am
ORD
- FLL
1 stop8h 35m
Spirit Airlines
Sat 5/27:05 am
FLL
- ORD
Nonstop3h 31m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/17:15 pm
ORD
- FLL
Nonstop3h 09m
Multiple Airlines
Fri 5/89:15 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$93
This Priceline deal was found by Cheapflights users on 4/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:16 am
ORD
- FLL
1 stop8h 24m
Multiple Airlines
Thu 5/78:54 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$92
This Priceline deal was found by Cheapflights users on 4/15. 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 5/115:05 am
ORD
- FLL
Nonstop3h 05m
Multiple Airlines
Thu 5/148:54 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Tue 5/121:18 pm
ORD
- FLL
Nonstop3h 02m
Multiple Airlines
Fri 5/159:15 pm
FLL
- ORD
Nonstop3h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$96
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
MDW
- FLL
1 stop6h 14m
Frontier
Wed 5/202:18 pm
FLL
- MDW
1 stop8h 44m
Frontier
Deal found 4/19![Frontier logo]()
$143
This Frontier deal was found by Cheapflights users on 4/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:05 pm
ORD
- FLL
Nonstop3h 15m
Frontier
Thu 5/289:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/15![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:44 pm
ORD
- FLL
Nonstop3h 15m
Frontier
Wed 5/279:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/14![Frontier logo]()
$91
This Priceline deal was found by Cheapflights users on 4/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:05 am
ORD
- FLL
Nonstop3h 15m
Frontier
Tue 6/29:53 am
FLL
- ORD
Nonstop3h 44m
Frontier
Deal found 4/14![Frontier logo]()
$90
One-way flights from Chicago to Port St. LucieSearch for one-way flight options from Chicago to Port St. Lucie. Find affordable one-way fares based on user searches. Data last updated April 19, 2026.
Search for one-way flight options from Chicago to Port St. Lucie. Find affordable one-way fares based on user searches. Data last updated April 19, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 4/285:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$43
This Spirit deal was found by Cheapflights users on 4/15. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Deal found 4/15![Spirit Airlines logo]()
$44
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 6/18:05 am
ORD
- FLL
Nonstop3h 15m
Frontier
Deal found 4/16![Frontier logo]()
$45
This CheapOair deal was found by Cheapflights users on 4/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:22 pm
ORD
- FLL
Nonstop3h 17m
Frontier
Deal found 4/17![Frontier logo]()
$46
This Super.com deal was found by Cheapflights users on 4/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:27 pm
ORD
- FLL
Nonstop3h 17m
Frontier
Deal found 4/15![Frontier logo]()
$47
This Spirit deal was found by Cheapflights users on 4/16. 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.
Tue 5/195:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$48
This Trip.com deal was found by Cheapflights users on 4/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:05 am
ORD
- FLL
Nonstop3h 15m
Frontier
Deal found 4/17![Frontier logo]()
$49
This Frontier deal was found by Cheapflights users on 4/18. 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.
Wed 7/157:55 am
ORD
- FLL
Nonstop3h 17m
Frontier
Deal found 4/18![Frontier logo]()
$50
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Mon 4/275:05 am
ORD
- FLL
Nonstop3h 05m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$51
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:15 pm
ORD
- FLL
Nonstop3h 09m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$52
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Fri 5/12:15 pm
MDW
- FLL
1 stop21h 58m
Frontier
Deal found 4/15![Frontier logo]()
$70
This Trip.com deal was found by Cheapflights users on 4/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
MDW
- FLL
1 stop17h 44m
Frontier
Deal found 4/18![Frontier logo]()
$72
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 April 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $89 (Spirit) |
One-way from | $43 (Cheapflightsfares) |
Popular in | March |
Cheapest in | September |
Average price | $248 |
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 April 19, 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
Cheapest round-trip
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Tue 7/14
5:26 pm-9:37 pm
Nonstop3h 11m
Fort Lauderdale
Fri 7/17
8:55 pm-11:08 pm
Nonstop3h 13m
$134
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Mon 5/4
5:05 am-9:10 am
Nonstop3h 05m
Fort Lauderdale
Thu 5/7
6:30 am-12:23 pm
1 stop6h 53m
$149
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Thu 6/4
7:33 pm-11:42 pm
Nonstop3h 09m
Fort Lauderdale
Mon 6/8
6:05 am-8:22 am
Nonstop3h 17m
$164
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Thu 5/14
5:05 am-9:10 am
Nonstop3h 05m
Fort Lauderdale
Thu 5/21
6:30 am-12:23 pm
1 stop6h 53m
$172
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Sun 5/31
7:00 am-3:27 pm
1 stop7h 27m
Fort Lauderdale
Tue 6/2
4:32 pm-10:27 pm
1 stop6h 55m
$187
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Sat 5/30
7:00 am-3:27 pm
1 stop7h 27m
Fort Lauderdale
Fri 6/5
6:00 am-1:01 pm
1 stop8h 01m
$187
ChicagoFort Lauderdale
MDW - FLL
MDWFLL
Chicago Midway
Sat 6/27
9:17 am-4:15 pm
1 stop5h 58m
Fort Lauderdale
Tue 6/30
4:44 pm-10:17 pm
1 stop6h 33m
$187
Quickest round-trip
ChicagoFort Lauderdale
MDW - FLL
MDWFLL
Chicago Midway
Mon 5/18
1:25 pm-5:20 pm
Nonstop2h 55m
Fort Lauderdale
Thu 5/21
2:20 pm-4:30 pm
Nonstop3h 10m
$199
ChicagoFort Lauderdale
MDW - FLL
MDWFLL
Chicago Midway
Mon 5/11
7:35 pm-11:30 pm
Nonstop2h 55m
Fort Lauderdale
Mon 5/18
6:55 am-9:05 am
Nonstop3h 10m
$199
ChicagoFort Lauderdale
ORD - FLL
ORDFLL
Chicago O'Hare Intl
Thu 6/11
12:59 pm-10:59 pm
1 stop9h 00m
Fort Lauderdale
Wed 6/17
8:55 am-11:19 am
Nonstop3h 24m
$202
Showing 1-10 of 43 resultsSorted by cheapest first
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.
ORD-FLL
MDW-FLL
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
CHI-LU5
ORD-FLL
MDW-FLL
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 April 17, 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 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 April 19, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 7% 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 April 18, 2026.
Travelers seeking maximum savings on their Chicago to Port St. Lucie flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday afternoons 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 April 19, 2026.
The most flights from CHI to LU5 are scheduled on a Sunday (87 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 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 April 19, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican 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.
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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.
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Chicago
Popular flights
Alternative routes for Chicago to Port St. Lucie
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Port St. Lucie by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Port St. Lucie by cabin class
Find flights from Chicago to Port St. Lucie, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Port St. Lucie flights
Browse other Chicago and Port St. Lucie flight options. Last updated on April 19, 2026.
Other flights from Chicago
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on April 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Chicago to Port St. Lucie
Discover the top 8 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 April 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$171 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$75 | Average$191 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$84 | Average$141 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$98 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$130 | Average$300 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$151 | Average$352 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$155 | Average$352 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$156 | Average$355 | FlexibilityNo cancel fee | On-time71% |