$87+ Cheap flights from Illinois to Luis Munoz Marin Intl (SJU)
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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJU
Mar 15 — Mar 221
1 adult, Economy
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Find cheap flights from Illinois to Luis Munoz Marin Intl 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Luis Munoz Marin Intl
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Cheapest flights from Illinois to Luis Munoz Marin IntlExplore the most affordable flight options available from Illinois to Luis Munoz Marin Intl. 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 Illinois to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:18 pm
ORD
- SJU
Nonstop4h 36m
Spirit Airlines
Thu 4/2312:30 pm
SJU
- ORD
Nonstop5h 08m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$179
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.
Sun 3/15:15 am
ORD
- SJU
1 stop8h 16m
Spirit Airlines
Thu 3/511:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$181
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.
Sun 2/2212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 2/2611:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$182
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.
Mon 2/2312:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Fri 2/274:31 pm
SJU
- ORD
1 stop9h 16m
Spirit Airlines
Deal found 2/12![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.
Sat 5/91:27 pm
ORD
- SJU
1 stop22h 06m
Frontier
Fri 5/156:00 am
SJU
- ORD
1 stop17h 57m
Frontier
Deal found 2/10![Frontier logo]()
$184
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 2/2412:17 pm
ORD
- SJU
Nonstop4h 32m
Multiple Airlines
Mon 3/93:22 pm
SJU
- ORD
1 stop8h 17m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$185
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.
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 3/511:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$186
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 4/710:55 am
ORD
- SJU
1 stop12h 03m
Spirit Airlines
Mon 4/131:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$188
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 am
MDW
- SJU
1 stop30h 22m
Multiple Airlines
Thu 2/266:27 pm
SJU
- MDW
1 stop26h 11m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$188
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.
Mon 4/1310:55 am
ORD
- SJU
1 stop12h 03m
Multiple Airlines
Mon 4/2010:55 am
SJU
- ORD
1 stop10h 13m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$189
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 4/78:56 pm
ORD
- SJU
Nonstop4h 33m
Spirit Airlines
Thu 4/91:29 am
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$190
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.
Mon 2/236:00 am
MDW
- SJU
1 stop30h 22m
Multiple Airlines
Fri 2/276:27 pm
SJU
- MDW
1 stop29h 12m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$190
Best flights from Illinois to Luis Munoz Marin IntlDiscover carefully curated flight deals from Illinois to Luis Munoz Marin Intl 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 Illinois to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Spirit 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:18 pm
ORD
- SJU
Nonstop4h 36m
Spirit Airlines
Thu 4/2312:30 pm
SJU
- ORD
Nonstop5h 08m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$179
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.
Mon 4/2012:18 pm
ORD
- SJU
Nonstop4h 36m
Multiple Airlines
Fri 4/244:11 pm
SJU
- ORD
1 stop8h 05m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$188
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:15 pm
ORD
- SJU
1 stop19h 15m
Frontier
Sat 5/23:18 pm
SJU
- ORD
1 stop8h 21m
Frontier
Deal found 2/12![Frontier logo]()
$202
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.
Tue 5/512:50 pm
MDW
- SJU
2 stops8h 50m
Southwest
Wed 5/1311:25 am
SJU
- MDW
2 stops9h 05m
Southwest
Deal found 2/11![Southwest logo]()
$246
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.
Thu 4/2312:53 pm
MDW
- SJU
1 stop9h 19m
Delta
Wed 4/297:30 am
SJU
- MDW
1 stop9h 55m
Delta
Deal found 2/12![Delta logo]()
$246
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.
Sat 4/1112:04 pm
MLI
- SJU
1 stop9h 58m
American Airlines
Tue 4/145:45 am
SJU
- MLI
2 stops13h 22m
American Airlines
Deal found 2/10![American Airlines logo]()
$266
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
STL
- SJU
1 stop8h 42m
United Airlines
Thu 5/77:20 am
SJU
- STL
2 stops14h 48m
United Airlines
Deal found 2/11![United Airlines logo]()
$346
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.
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 3/511:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$186
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.
Mon 5/1112:18 pm
ORD
- SJU
Nonstop4h 36m
Multiple Airlines
Sat 5/168:41 am
SJU
- ORD
1 stop16h 18m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$193
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:56 pm
ORD
- SJU
Nonstop4h 33m
Multiple Airlines
Mon 4/136:00 am
SJU
- ORD
1 stop18h 22m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$217
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1612:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 2/2612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$229
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:59 pm
ORD
- SJU
1 stop6h 18m
Delta
Sun 5/2412:50 pm
SJU
- ORD
1 stop12h 09m
Delta
Deal found 2/10![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.
Mon 3/21:25 pm
MDW
- SJU
2 stops8h 40m
Southwest
Wed 3/45:40 am
SJU
- MDW
2 stops8h 50m
Southwest
Deal found 2/11![Southwest logo]()
$266
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.
Sat 3/218:53 pm
STL
- SJU
1 stop16h 16m
Frontier
Wed 3/253:08 am
SJU
- STL
1 stop28h 54m
Frontier
Deal found 2/10![Frontier logo]()
$278
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
MDW
- SJU
1 stop9h 23m
Delta
Sat 4/256:15 am
SJU
- MDW
1 stop11h 14m
Delta
Deal found 2/10![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.
Mon 4/66:10 pm
ORD
- SJU
1 stop23h 45m
Spirit Airlines
Wed 4/1512:30 pm
SJU
- ORD
Nonstop5h 08m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$234
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.
Fri 4/245:01 am
ORD
- SJU
1 stop8h 07m
Multiple Airlines
Sat 5/212:30 pm
SJU
- ORD
Nonstop5h 08m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$243
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:56 pm
EVV
- SJU
2 stops16h 33m
American Airlines
Tue 5/197:25 am
SJU
- EVV
1 stop16h 33m
American Airlines
Deal found 2/12![American Airlines logo]()
$299
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:55 pm
STL
- SJU
1 stop15h 59m
Frontier
Fri 4/246:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/12![Frontier logo]()
$280
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.
Wed 4/86:00 am
MDW
- SJU
1 stop9h 18m
Delta
Wed 4/157:30 am
SJU
- MDW
1 stop9h 59m
Delta
Deal found 2/11![Delta logo]()
$256
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:25 pm
MDW
- SJU
1 stop6h 40m
Southwest
Sun 5/179:45 pm
SJU
- MDW
2 stops15h 05m
Southwest
Deal found 2/10![Southwest logo]()
$296
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.
Tue 3/176:01 pm
EVV
- SJU
2 stops15h 55m
American Airlines
Tue 3/245:28 am
SJU
- EVV
1 stop11h 21m
American Airlines
Deal found 2/10![American Airlines logo]()
$306
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
MDW
- SJU
1 stop9h 23m
Delta
Fri 5/1512:50 pm
SJU
- MDW
1 stop9h 19m
Delta
Deal found 2/10![Delta logo]()
$256
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:45 am
STL
- SJU
2 stops15h 05m
United Airlines
Wed 5/137:20 am
SJU
- STL
2 stops14h 48m
United Airlines
Deal found 2/11![United Airlines 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.
Mon 5/48:35 pm
MDW
- SJU
1 stop13h 00m
Southwest
Tue 5/125:35 am
SJU
- MDW
1 stop7h 35m
Southwest
Deal found 2/11![Southwest logo]()
$296
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:21 pm
STL
- SJU
1 stop16h 06m
Frontier
Sat 3/148:16 pm
SJU
- STL
1 stop24h 54m
Frontier
Deal found 2/12![Frontier logo]()
$296
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.
Mon 3/92:09 pm
STL
- SJU
1 stop25h 23m
Multiple Airlines
Thu 3/126:46 pm
SJU
- STL
2 stops19h 48m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$276
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.
Mon 6/84:33 pm
EVV
- SJU
2 stops17h 30m
American Airlines
Sat 6/1312:59 am
SJU
- EVV
1 stop18h 00m
American Airlines
Deal found 2/10![American Airlines logo]()
$306
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:35 pm
MDW
- SJU
1 stop11h 35m
Southwest
Tue 5/195:05 am
SJU
- MDW
2 stops11h 45m
Southwest
Deal found 2/10![Southwest logo]()
$296
This Frontier deal was found by Cheapflights users on 2/13. 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 3/204:51 pm
STL
- SJU
1 stop8h 22m
Frontier
Thu 3/2612:04 pm
SJU
- STL
1 stop12h 15m
Frontier
Deal found 2/13![Frontier logo]()
$316
Last-minute flights from Illinois to Luis Munoz Marin IntlDiscover last-minute flight deals from Illinois to Luis Munoz Marin Intl. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Luis Munoz Marin Intl. Data last updated February 13, 2026 and is based on user searches.
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.
Sun 2/2212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 2/2611:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$182
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.
Mon 2/2312:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Fri 2/274:31 pm
SJU
- ORD
1 stop9h 16m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$183
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 am
MDW
- SJU
1 stop30h 22m
Multiple Airlines
Thu 2/266:27 pm
SJU
- MDW
1 stop26h 11m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$188
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.
Mon 2/237:23 pm
ORD
- SJU
2 stops16h 59m
Spirit Airlines
Thu 2/2611:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$189
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.
Mon 2/236:00 am
MDW
- SJU
1 stop30h 22m
Multiple Airlines
Wed 2/254:06 pm
SJU
- MDW
1 stop26h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$191
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 2/2412:17 pm
ORD
- SJU
Nonstop4h 32m
Multiple Airlines
Mon 3/93:22 pm
SJU
- ORD
1 stop8h 17m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$185
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 2/258:30 am
ORD
- SJU
1 stop14h 13m
Frontier
Tue 3/33:53 am
SJU
- ORD
1 stop13h 59m
Frontier
Deal found 2/10![Frontier logo]()
$188
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 2/258:30 am
ORD
- SJU
1 stop14h 13m
Multiple Airlines
Thu 3/512:32 pm
SJU
- ORD
Nonstop5h 16m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$192
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.
Sun 3/15:15 am
ORD
- SJU
1 stop8h 16m
Spirit Airlines
Thu 3/511:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$181
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.
Mon 3/212:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Thu 3/511:52 am
SJU
- ORD
1 stop8h 26m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$186
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.
Mon 3/23:50 pm
ORD
- SJU
1 stop9h 03m
Multiple Airlines
Fri 3/611:52 am
SJU
- ORD
1 stop8h 26m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$191
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:17 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Fri 3/612:32 pm
SJU
- ORD
Nonstop5h 16m
Spirit Airlines
Deal found 2/9![Spirit Airlines logo]()
$190
One-way flights from Illinois to Luis Munoz Marin IntlSearch for one-way flight options from Illinois to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Illinois to Luis Munoz Marin Intl. 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.
Tue 3/33:49 pm
STL
- SJU
1 stop6h 54m
Frontier
Deal found 2/10![Frontier logo]()
$87
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:55 am
ORD
- SJU
1 stop12h 03m
Spirit Airlines
Deal found 2/12![Spirit Airlines logo]()
$92
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.
Mon 2/236:00 am
MDW
- SJU
1 stop31h 06m
Frontier
Deal found 2/10![Frontier logo]()
$92
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.
Tue 2/247:00 am
ORD
- SJU
1 stop6h 31m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$93
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.
Mon 2/237:00 am
ORD
- SJU
1 stop6h 31m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$94
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 5/712:22 pm
ORD
- SJU
Nonstop4h 32m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$95
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.
Mon 3/96:00 am
MDW
- SJU
1 stop18h 21m
Frontier
Deal found 2/11![Frontier logo]()
$95
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.
Mon 3/99:18 am
ORD
- SJU
1 stop7h 40m
Spirit Airlines
Deal found 2/9![Spirit Airlines logo]()
$96
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.
Sat 2/218:17 pm
STL
- SJU
1 stop16h 05m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$97
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.
Mon 2/236:00 am
MDW
- SJU
2 stops31h 31m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$98
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.
Mon 3/28:22 pm
STL
- SJU
2 stops20h 36m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$98
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.
Sat 4/115:05 am
ORD
- SJU
1 stop12h 50m
Spirit Airlines
Deal found 2/10![Spirit Airlines logo]()
$99
Find flight deals from Illinois to Luis Munoz Marin Intl
Keep the following information in mind while searching for Illinois to Luis Munoz Marin Intl flight deals. Data was last updated February 13, 2026.
Round-trip from | $179 (Spirit) |
|---|---|
One-way from | $87 (Priceline) |
Popular in | December |
Cheapest in | April |
Average price | $387 |
Good round-trip deal | $280 or less |
Good one-way deal | $120 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Luis Munoz Marin Intl 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 Illinois to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Illinois
Fly to
Luis Munoz Marin Intl
Route
Depart
Return
Price
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 4/20
12:18 pm-5:54 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Thu 4/23
12:30 pm-4:38 pm
Nonstop5h 08m
$179
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 3/2
12:17 pm-6:49 pm
Nonstop4h 32m
San Juan Luis Munoz Marin Intl
Thu 3/5
11:52 am-6:18 pm
1 stop8h 26m
$186
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 4/20
12:18 pm-5:54 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Fri 4/24
4:11 pm-11:16 pm
1 stop8h 05m
$188
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 5/11
12:18 pm-5:54 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Sat 5/16
8:41 am-11:59 pm
1 stop16h 18m
$193
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Fri 4/24
7:15 pm-3:30 pm
1 stop19h 15m
San Juan Luis Munoz Marin Intl
Sat 5/2
3:18 pm-10:39 pm
1 stop8h 21m
$202
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Fri 4/10
8:56 pm-2:29 am
Nonstop4h 33m
San Juan Luis Munoz Marin Intl
Mon 4/13
6:00 am-11:22 pm
1 stop18h 22m
$217
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 2/16
12:17 pm-6:49 pm
Nonstop4h 32m
San Juan Luis Munoz Marin Intl
Thu 2/26
12:32 pm-3:48 pm
Nonstop5h 16m
$229
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Mon 4/6
6:10 pm-6:55 pm
1 stop23h 45m
San Juan Luis Munoz Marin Intl
Wed 4/15
12:30 pm-4:38 pm
Nonstop5h 08m
$234
ChicagoSan Juan
ORD - SJU
ORDSJU
Chicago O'Hare Intl
Fri 4/24
5:01 am-2:08 pm
1 stop8h 07m
San Juan Luis Munoz Marin Intl
Sat 5/2
12:30 pm-4:38 pm
Nonstop5h 08m
$243
ChicagoSan Juan
MDW - SJU
MDWSJU
Chicago Midway
Tue 5/5
12:50 pm-10:40 pm
2 stops8h 50m
San Juan Luis Munoz Marin Intl
Wed 5/13
11:25 am-7:30 pm
2 stops9h 05m
$246
Showing 1-10 of 60 results
Best time to book a flight from Illinois to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Illinois with our price prediction graph.
ORD-SJU
MDW-SJU
STL-SJU
MLI-SJU
PIA-SJU
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 Illinois to San Juan Luis Munoz Marin Intl Airport
USIL-SJU
ORD-SJU
MDW-SJU
STL-SJU
MLI-SJU
What is the cheapest month to book a flight from Illinois to San Juan Luis Munoz Marin Intl Airport?
Currently, April is the cheapest month in which you can book a flight from Illinois to San Juan Luis Munoz Marin Intl Airport (average of $91). Flying from Illinois to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $224). 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 IL to SJU?
Find hourly flight availability from Illinois to Luis Munoz Marin Intl. 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.
When flying from Illinois to San Juan Luis Munoz Marin Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight at noon.
What is the cheapest day to fly from Illinois to San Juan Luis Munoz Marin Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Luis Munoz Marin Intl. Price data was last updated on February 10, 2025.
Travelers seeking maximum savings on their Illinois to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to San Juan Luis Munoz Marin Intl Airport
Explore weekly flight availability from Illinois to Luis Munoz Marin Intl. 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 USIL to SJU 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).
Related info for your journey
Find useful and relevant information for your journey from Illinois to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Dorado
Luquillo
Rio Grande
Humacao
Bayamón
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Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 13, 2026.
Illinois and Luis Munoz Marin Intl flights
Browse other Illinois and Luis Munoz Marin Intl flight options. Last updated on February 13, 2026.
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Illinois to Luis Munoz Marin Intl flights
Consider these flights traveling from Illinois to Luis Munoz Marin Intl.
Top 7 airlines flying from Illinois to Luis Munoz Marin Intl
Discover the top 7 airlines that operate flights from Illinois to Luis Munoz Marin Intl. 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$106 | Average$287 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$119 | Average$237 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$132 | Average$440 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$309 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$225 | Average$593 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$251 | Average$490 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$379 | Average$487 | FlexibilityNo cancel fee | On-time63% |