$87+ Cheap flights from Luis Munoz Marin Intl (SJU) to Illinois
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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ORD
Mar 15 — Mar 221
1 adult, Economy
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Cheapest flights from Luis Munoz Marin Intl to IllinoisExplore the most affordable flight options available from Luis Munoz Marin Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Luis Munoz Marin Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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.
Fri 2/2712:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$162
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 3/121:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/1610:55 am
ORD
- SJU
1 stop12h 03m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 3/171:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Tue 3/318:56 pm
ORD
- SJU
Nonstop4h 33m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$178
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:22 pm
SJU
- ORD
Nonstop5h 15m
Spirit Airlines
Tue 9/112:22 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$179
This CheapOair deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Multiple Airlines
Tue 3/38:30 am
ORD
- SJU
1 stop14h 13m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$180
This Cheapflightsfares deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Tue 3/310:44 am
ORD
- SJU
1 stop10h 25m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/254:31 pm
SJU
- MDW
2 stops25h 45m
Multiple Airlines
Sun 3/16:15 am
MDW
- SJU
1 stop17h 54m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$198
This Expedia deal was found by Cheapflights users on 2/9. 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.
Wed 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Sun 3/13:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/9![Frontier logo]()
$202
This Frontier deal was found by Cheapflights users on 2/10. 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.
Thu 5/73:18 pm
SJU
- MDW
1 stop8h 01m
Frontier
Sun 5/106:00 am
MDW
- SJU
1 stop7h 08m
Frontier
Deal found 2/10![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/56:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Mon 3/96:00 am
MDW
- SJU
1 stop14h 03m
Frontier
Deal found 2/11![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/56:00 am
SJU
- MDW
1 stop9h 56m
Multiple Airlines
Mon 3/96:00 am
MDW
- SJU
1 stop10h 58m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$206
Best flights from Luis Munoz Marin Intl to IllinoisDiscover carefully curated flight deals from Luis Munoz Marin Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Luis Munoz Marin Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$146
This CheapOair deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:08 am
SJU
- ORD
1 stop12h 09m
Multiple Airlines
Sun 4/2612:22 pm
ORD
- SJU
Nonstop4h 32m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$196
This Priceline deal was found by Cheapflights users on 2/10. 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 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Sun 3/13:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/10![Frontier logo]()
$202
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 pm
SJU
- STL
1 stop16h 16m
American Airlines
Sun 4/197:00 am
STL
- SJU
1 stop12h 51m
American Airlines
Deal found 2/10![American Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 2/11. 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 4/166:15 am
SJU
- MDW
1 stop6h 52m
Delta
Wed 4/2210:43 am
MDW
- SJU
1 stop8h 41m
Delta
Deal found 2/11![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 2/11. 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.
Thu 3/53:50 pm
SJU
- MDW
1 stop7h 20m
Southwest
Mon 3/98:05 am
MDW
- SJU
2 stops11h 00m
Southwest
Deal found 2/11![Southwest logo]()
$310
This Frontier deal was found by Cheapflights users on 2/11. 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.
Thu 5/73:18 pm
SJU
- MDW
1 stop8h 01m
Frontier
Sun 5/106:00 am
MDW
- SJU
1 stop7h 08m
Frontier
Deal found 2/11![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 2/10. 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.
Tue 3/1711:03 am
SJU
- ORD
1 stop8h 28m
Multiple Airlines
Mon 3/234:30 pm
ORD
- SJU
1 stop17h 40m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$208
This Expedia deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Wed 3/412:44 pm
ORD
- SJU
1 stop8h 25m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$211
This Frontier deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:18 pm
SJU
- MDW
1 stop8h 01m
Frontier
Mon 5/49:14 am
MDW
- SJU
1 stop12h 34m
Frontier
Deal found 2/12![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:52 am
SJU
- MDW
1 stop28h 04m
Multiple Airlines
Mon 3/96:00 am
MDW
- SJU
1 stop18h 21m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$219
This Priceline deal was found by Cheapflights users on 2/10. 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.
Fri 5/16:00 am
SJU
- ORD
1 stop17h 57m
Frontier
Mon 5/42:20 pm
ORD
- SJU
1 stop9h 09m
Frontier
Deal found 2/10![Frontier logo]()
$202
This Delta deal was found by Cheapflights users on 2/11. 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 5/222:20 pm
SJU
- ORD
1 stop8h 29m
Delta
Mon 6/18:10 am
ORD
- SJU
1 stop10h 56m
Delta
Deal found 2/11![Delta logo]()
$256
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/121:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/168:56 pm
ORD
- SJU
Nonstop4h 33m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/1712:05 pm
SJU
- STL
1 stop23h 32m
Multiple Airlines
Tue 3/2411:27 am
STL
- SJU
2 stops12h 52m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$242
This Travelocity deal was found by Cheapflights users on 2/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Sat 2/283:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/9![Frontier logo]()
$223
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:36 pm
SJU
- ORD
2 stops18h 34m
Spirit Airlines
Sat 4/257:06 am
ORD
- SJU
1 stop6h 25m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$252
This Frontier deal was found by Cheapflights users on 2/10. 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 2/275:25 pm
SJU
- STL
1 stop9h 02m
Frontier
Mon 3/23:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/10![Frontier logo]()
$223
This Trip.com deal was found by Cheapflights users on 2/9. 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 2/253:18 pm
SJU
- STL
2 stops34h 41m
Multiple Airlines
Sun 3/13:49 pm
STL
- SJU
1 stop9h 04m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:40 am
SJU
- MDW
2 stops8h 50m
Southwest
Mon 3/98:05 am
MDW
- SJU
2 stops11h 00m
Southwest
Deal found 2/12![Southwest logo]()
$330
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:19 pm
SJU
- ORD
1 stop18h 56m
Frontier
Sat 4/258:00 am
ORD
- SJU
1 stop6h 37m
Frontier
Deal found 2/12![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:05 am
SJU
- ORD
2 stops16h 08m
Multiple Airlines
Wed 3/48:30 am
ORD
- SJU
1 stop14h 13m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 am
SJU
- MDW
1 stop9h 51m
Delta
Wed 3/410:49 am
MDW
- SJU
1 stop11h 09m
Delta
Deal found 2/12![Delta logo]()
$346
This Southwest deal was found by Cheapflights users on 2/11. 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.
Fri 6/51:15 pm
SJU
- MDW
1 stop9h 05m
Southwest
Mon 6/1511:35 am
MDW
- SJU
1 stop11h 50m
Southwest
Deal found 2/11![Southwest logo]()
$346
This CheapOair deal was found by Cheapflights users on 2/10. 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 4/206:30 am
SJU
- STL
1 stop17h 49m
Frontier
Sat 4/254:55 pm
STL
- SJU
1 stop15h 59m
Frontier
Deal found 2/10![Frontier logo]()
$234
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:40 pm
SJU
- ORD
1 stop8h 42m
Multiple Airlines
Sat 4/49:32 am
ORD
- SJU
1 stop14h 19m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:06 pm
SJU
- MDW
2 stops23h 50m
Frontier
Mon 3/96:00 am
MDW
- SJU
1 stop18h 21m
Frontier
Deal found 2/12![Frontier logo]()
$242
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:32 pm
SJU
- ORD
Nonstop5h 16m
Multiple Airlines
Fri 2/273:11 pm
ORD
- SJU
1 stop7h 32m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/56:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Mon 3/99:51 pm
MDW
- SJU
2 stops15h 26m
Frontier
Deal found 2/10![Frontier logo]()
$253
This Super.com deal was found by Cheapflights users on 2/9. 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.
Fri 3/66:30 am
SJU
- MDW
1 stop8h 38m
Frontier
Sun 3/88:00 am
MDW
- SJU
1 stop17h 13m
Frontier
Deal found 2/9![Frontier logo]()
$273
Last-minute flights from Luis Munoz Marin Intl to IllinoisDiscover last-minute flight deals from Luis Munoz Marin Intl to Illinois. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Luis Munoz Marin Intl to Illinois. Data last updated February 13, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 2/10. 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 2/144:36 pm
SJU
- ORD
1 stop9h 11m
Spirit Airlines
Tue 2/2412:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/254:31 pm
SJU
- MDW
2 stops25h 45m
Multiple Airlines
Sun 3/16:15 am
MDW
- SJU
1 stop17h 54m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$198
This Expedia deal was found by Cheapflights users on 2/9. 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.
Wed 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Sun 3/13:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/9![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 2/10. 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.
Wed 2/255:25 pm
SJU
- MDW
1 stop23h 01m
Frontier
Sun 3/16:15 am
MDW
- SJU
1 stop17h 54m
Frontier
Deal found 2/10![Frontier logo]()
$202
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$146
This CheapOair deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Multiple Airlines
Tue 3/38:30 am
ORD
- SJU
1 stop14h 13m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$180
This Trip.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Mon 3/29:22 pm
MDW
- SJU
1 stop10h 32m
Frontier
Deal found 2/12![Frontier logo]()
$207
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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.
Fri 2/2712:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/56:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Mon 3/96:00 am
MDW
- SJU
1 stop14h 03m
Frontier
Deal found 2/11![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/56:00 am
SJU
- MDW
1 stop9h 56m
Multiple Airlines
Mon 3/96:00 am
MDW
- SJU
1 stop10h 58m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$206
This Cheapflightsfares deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/121:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Mon 3/1610:55 am
ORD
- SJU
1 stop12h 03m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 3/171:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Tue 3/318:56 pm
ORD
- SJU
Nonstop4h 33m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$178
One-way flights from Luis Munoz Marin Intl to IllinoisSearch for one-way flight options from Luis Munoz Marin Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Luis Munoz Marin Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
This Priceline deal was found by Cheapflights users on 2/10. 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 3/45:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/10![Frontier logo]()
$87
This Trip.com deal was found by Cheapflights users on 2/11. 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.
Thu 3/56:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Deal found 2/11![Frontier logo]()
$95
This Cheapflightsfares deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:30 pm
SJU
- ORD
Nonstop5h 08m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$95
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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 4/1611:07 am
SJU
- ORD
1 stop8h 08m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$96
This Trip.com deal was found by Cheapflights users on 2/10. 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.
Fri 2/276:27 pm
SJU
- STL
1 stop14h 24m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$97
This Trip.com deal was found by Cheapflights users on 2/11. 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.
Thu 2/266:00 am
SJU
- MDW
1 stop9h 56m
Frontier
Deal found 2/11![Frontier logo]()
$97
This CheapOair deal was found by Cheapflights users on 2/10. 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.
Tue 5/1911:07 am
SJU
- ORD
1 stop8h 08m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$97
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:27 pm
SJU
- ORD
2 stops18h 55m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 2/253:18 pm
SJU
- ORD
2 stops33h 47m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$99
This Super.com deal was found by Cheapflights users on 2/9. 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.
Wed 4/86:30 am
SJU
- STL
1 stop17h 55m
Frontier
Deal found 2/9![Frontier logo]()
$100
This Super.com deal was found by Cheapflights users on 2/10. 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.
Fri 2/274:16 pm
SJU
- MDW
1 stop8h 21m
Frontier
Deal found 2/10![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 4/232:15 am
SJU
- ORD
1 stop17h 00m
Spirit Airlines
Deal found 2/9![Spirit Airlines logo]()
$100
Find flight deals from Luis Munoz Marin Intl to Illinois
Keep the following information in mind while searching for Luis Munoz Marin Intl to Illinois flight deals. Data was last updated February 13, 2026.
Round-trip from | $146 (Cheapflightsfares) |
|---|---|
One-way from | $87 (Priceline) |
Popular in | December |
Cheapest in | February |
Average price | $191 |
Good round-trip deal | $265 or less |
Good one-way deal | $205 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Luis Munoz Marin Intl to Illinois 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 February 13, 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Illinois that are best for you.
Fly from
Luis Munoz Marin Intl
Fly to
Illinois
Route
Depart
Return
Price
San JuanChicago
SJU - ORD
SJUORD
San Juan Luis Munoz Marin Intl
Thu 2/26
12:32 pm-3:48 pm
Nonstop5h 16m
Chicago O'Hare Intl
Mon 3/2
12:17 pm-6:49 pm
Nonstop4h 32m
$146
San JuanChicago
SJU - ORD
SJUORD
San Juan Luis Munoz Marin Intl
Thu 4/23
3:08 am-2:17 pm
1 stop12h 09m
Chicago O'Hare Intl
Sun 4/26
12:22 pm-5:54 pm
Nonstop4h 32m
$196
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 2/25
5:25 pm-10:27 pm
1 stop7h 02m
Lambert-St Louis
Sun 3/1
3:49 pm-2:53 am
1 stop9h 04m
$202
San JuanChicago
SJU - MDW
SJUMDW
San Juan Luis Munoz Marin Intl
Thu 5/7
3:18 pm-10:19 pm
1 stop8h 01m
Chicago Midway
Sun 5/10
6:00 am-2:08 pm
1 stop7h 08m
$202
San JuanChicago
SJU - MDW
SJUMDW
San Juan Luis Munoz Marin Intl
Fri 5/1
3:18 pm-10:19 pm
1 stop8h 01m
Chicago Midway
Mon 5/4
9:14 am-10:48 pm
1 stop12h 34m
$202
San JuanChicago
SJU - ORD
SJUORD
San Juan Luis Munoz Marin Intl
Fri 5/1
6:00 am-10:57 pm
1 stop17h 57m
Chicago O'Hare Intl
Mon 5/4
2:20 pm-12:29 am
1 stop9h 09m
$202
San JuanChicago
SJU - ORD
SJUORD
San Juan Luis Munoz Marin Intl
Tue 3/17
11:03 am-6:31 pm
1 stop8h 28m
Chicago O'Hare Intl
Mon 3/23
4:30 pm-11:10 am
1 stop17h 40m
$208
San JuanChicago
SJU - ORD
SJUORD
San Juan Luis Munoz Marin Intl
Sat 2/28
12:32 pm-3:48 pm
Nonstop5h 16m
Chicago O'Hare Intl
Wed 3/4
12:44 pm-11:09 pm
1 stop8h 25m
$211
San JuanChicago
SJU - MDW
SJUMDW
San Juan Luis Munoz Marin Intl
Wed 3/4
11:52 am-1:56 pm
1 stop28h 04m
Chicago Midway
Mon 3/9
6:00 am-1:21 am
1 stop18h 21m
$219
San JuanSt. Louis
SJU - STL
SJUSTL
San Juan Luis Munoz Marin Intl
Wed 2/25
5:25 pm-10:27 pm
1 stop7h 02m
Lambert-St Louis
Sat 2/28
3:49 pm-2:53 am
1 stop9h 04m
$223
Showing 1-10 of 60 results
Best time to book a flight from Luis Munoz Marin Intl to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Luis Munoz Marin Intl with our price prediction graph.
SJU-ORD
SJU-MDW
SJU-STL
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 San Juan Luis Munoz Marin Intl Airport to Illinois
SJU-USIL
SJU-ORD
SJU-MDW
SJU-STL
What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to Illinois?
Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Illinois (average of $101). Flying from San Juan Luis Munoz Marin Intl Airport to Illinois in December is currently the most expensive (average of $157). 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 SJU to IL?
Find hourly flight availability from Luis Munoz Marin Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 13, 2026.
One of the essential ways to save on airfare from San Juan Luis Munoz Marin Intl Airport to Illinois is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 53% on airfare.
What is the cheapest day to fly from San Juan Luis Munoz Marin Intl Airport to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Luis Munoz Marin Intl to Illinois. Price data was last updated on February 10, 2025.
Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Illinois flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Juan Luis Munoz Marin Intl Airport to Illinois
Explore weekly flight availability from Luis Munoz Marin Intl to Illinois. 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 February 13, 2026.
The most flights from SJU to USIL are scheduled on a Thursday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated February 13, 2026.
Get a feel of what it's like to fly with United Airlines, American Airlines, and JetBlue from San Juan Luis Munoz Marin Intl Airport to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Boarding
7.7
Entertainment
7.1
Crew
8.1
Comfort
7.3
Overall
7.4
Food
6.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Related info for your journey
Find useful and relevant information for your journey from Luis Munoz Marin Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Luis Munoz Marin Intl and Illinois flights
Browse other Luis Munoz Marin Intl and Illinois flight options. Last updated on February 13, 2026.
Popular flight searches
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Top 7 airlines flying from Luis Munoz Marin Intl to Illinois
Discover the top 7 airlines that operate flights from Luis Munoz Marin Intl to Illinois. 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 February 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$116 | Average$538 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$122 | Average$265 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$131 | Average$201 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$137 | Average$258 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$256 | Average$480 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$479 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$419 | Average$553 | FlexibilityNo cancel fee | On-time63% |