$125+ Cheap flights from Illinois to San Luis Potosí, Mexico (SLP)
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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SLP
Jan 8 — Jan 151
1 adult, Economy
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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 San Luis Potosí
Cheapest flights from Illinois to San Luis PotosíExplore the most affordable flight options available from Illinois to San Luis Potosí. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.
Explore the most affordable flight options available from Illinois to San Luis Potosí. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.
This United Airlines deal was found by Cheapflights users on 12/8. 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.
Tue 12/302:17 pmORD - SLP
1 stop6h 37mUnited Airlines
Mon 1/126:00 amSLP - ORD
1 stop15h 26mUnited Airlines
Deal found 12/8![United Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 12/6. 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 12/79:08 pmORD - SLP
1 stop14h 41mUnited Airlines
Fri 12/1212:49 pmSLP - ORD
1 stop8h 27mUnited Airlines
Deal found 12/6![United Airlines logo]()
$531
This Mytrip deal was found by Cheapflights users on 12/8. 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.
Fri 12/129:14 pmORD - SLP
1 stop16h 43mMultiple Airlines
Sun 1/112:06 pmSLP - ORD
3 stops24h 11mMultiple Airlines
Deal found 12/8![Multiple Airlines logo]()
$532
This Aeromexico deal was found by Cheapflights users on 12/6. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:45 amORD - SLP
1 stop11h 50mAeromexico
Thu 1/111:41 amSLP - ORD
1 stop10h 30mAeromexico
Deal found 12/6![Aeromexico logo]()
$533
This Aeromexico deal was found by Cheapflights users on 12/7. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:00 amMDW - SLP
1 stop12h 35mAeromexico
Tue 12/309:15 amSLP - MDW
1 stop7h 05mAeromexico
Deal found 12/7![Aeromexico logo]()
$561
This Mytrip deal was found by Cheapflights users on 12/8. 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.
Sat 12/136:05 amORD - SLP
1 stop12h 20mMultiple Airlines
Sun 1/112:06 pmSLP - ORD
3 stops24h 11mMultiple Airlines
Deal found 12/8![Multiple Airlines logo]()
$573
This American Airlines deal was found by Cheapflights users on 12/7. 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 12/307:36 amORD - SLP
1 stop15h 23mAmerican Airlines
Sun 1/117:00 amSLP - ORD
1 stop7h 10mAmerican Airlines
Deal found 12/7![American Airlines logo]()
$576
This Aeromexico deal was found by Cheapflights users on 12/8. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:30 amORD - SLP
1 stop13h 05mAeromexico
Wed 1/710:00 amSLP - ORD
1 stop13h 59mAeromexico
Deal found 12/8![Aeromexico logo]()
$603
This Aeromexico deal was found by Cheapflights users on 12/8. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:30 amORD - SLP
1 stop12h 48mAeromexico
Wed 1/710:00 amSLP - ORD
1 stop9h 35mAeromexico
Deal found 12/8![Aeromexico logo]()
$617
This United Airlines deal was found by Cheapflights users on 12/6. 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.
Tue 12/309:23 pmORD - SLP
1 stop14h 26mUnited Airlines
Sun 1/116:00 amSLP - ORD
1 stop16h 58mUnited Airlines
Deal found 12/6![United Airlines logo]()
$621
This Aeromexico deal was found by Cheapflights users on 12/7. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amMDW - SLP
1 stop12h 35mAeromexico
Tue 1/610:15 amSLP - MDW
1 stop11h 52mAeromexico
Deal found 12/7![Aeromexico logo]()
$632
This Aeromexico deal was found by Cheapflights users on 12/8. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:00 amMDW - SLP
1 stop12h 35mAeromexico
Thu 1/19:15 amSLP - MDW
1 stop13h 07mAeromexico
Deal found 12/8![Aeromexico logo]()
$637
Find flight deals from Illinois to San Luis Potosí
Keep the following information in mind while searching for Illinois to San Luis Potosí flight deals. Data was last updated December 9, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $294 (American Airlines) |
One-way from | $153 (Delta) |
Popular in | May |
Cheapest in | February |
Average price | $633 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to San Luis Potosí 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 December 9, 2025.
Use the filters below to find and compare flights from Illinois to San Luis Potosí that are best for you.
Fly from
Illinois
Fly to
San Luis Potosí
Route
Depart
Return
Price
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Wed 1/21
3:16 pm-11:59 pm
1 stop8h 43m
San Luis Potosi
Wed 1/28
5:48 am-7:21 pm
2 stops13h 33m
$311
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Fri 1/23
10:48 am-11:59 pm
2 stops13h 11m
San Luis Potosi
Fri 1/30
5:48 am-5:29 pm
2 stops11h 41m
$317
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Fri 1/23
6:00 am-6:19 pm
1 stop12h 19m
San Luis Potosi
Mon 1/26
8:28 am-10:22 pm
1 stop13h 54m
$320
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Fri 1/23
9:55 am-6:19 pm
1 stop8h 24m
San Luis Potosi
Fri 1/30
8:28 am-9:00 pm
1 stop12h 32m
$322
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Mon 2/9
1:11 am-11:58 am
1 stop10h 47m
San Luis Potosi
Sat 2/14
8:38 am-11:00 pm
1 stop14h 22m
$331
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Sun 2/1
3:16 pm-11:59 pm
1 stop8h 43m
San Luis Potosi
Sun 2/8
3:52 pm-11:00 pm
1 stop7h 08m
$331
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Thu 5/14
4:54 pm-11:40 pm
1 stop7h 46m
San Luis Potosi
Wed 5/27
9:36 am-11:53 pm
1 stop13h 17m
$331
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Wed 4/8
1:57 am-12:05 pm
1 stop11h 08m
San Luis Potosi
Thu 4/16
9:47 am-11:53 pm
1 stop13h 06m
$331
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Tue 1/27
12:59 am-12:01 pm
1 stop11h 02m
San Luis Potosi
Sun 2/1
3:52 pm-11:00 pm
1 stop7h 08m
$331
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Sat 2/14
1:26 pm-11:58 am
2 stops22h 32m
San Luis Potosi
Thu 2/19
12:59 pm-11:00 pm
1 stop10h 01m
$331
Showing 1-10 of 36 results
Best time to book a flight from Illinois to San Luis Potosí
Have a flexible travel schedule? Discover the best time to fly to San Luis Potosí from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to San Luis Potosí
What is the cheapest month to book a flight from Illinois to San Luis Potosí?
Currently, May is the cheapest month in which you can book a flight from Illinois to San Luis Potosí (average of $106). Flying from Illinois to San Luis Potosí in September is currently the most expensive (average of $247). 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 SLP?
Find hourly flight availability from Illinois to San Luis Potosí. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.
When flying from Illinois to San Luis Potosí, 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 29% versus a flight in the morning.
What is the cheapest day to fly from Illinois to San Luis Potosí?
Use this chart to determine the cheapest time to fly round-trip from Illinois to San Luis Potosí. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Illinois to San Luis Potosí flight should consider departing on Monday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost to fly round-trip from Illinois to San Luis Potosí?
Related info for your journey
Find useful and relevant information for your journey from Illinois to San Luis Potosí. 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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Alternative routes for Illinois to San Luis Potosí
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Illinois to San Luis Potosí
Discover the top 4 airlines that operate flights from Illinois to San Luis Potosí. 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 December 9, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$337 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$514 | FlexibilityNo cancel fee | On-time71% |