$145+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SLP
Nov 13 — Nov 201
1 adult, Economy
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Find cheap flights from Illinois to San Luis Potosí with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap 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 October 14, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $324 (Aeromexico) |
One-way from | $145 (Aeromexico) |
Popular in | December |
Cheapest in | February |
Average price | $552 |
Find 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 October 14, 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 October 14, 2025.
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:45 amORD - SLP
1 stop11h 33mDelta
Tue 11/185:52 amSLP - ORD
1 stop7h 20mDelta
Deal found 10/13![Delta logo]()
$328
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:55 amORD - SLP
2 stops9h 23mDelta
Wed 11/195:52 amSLP - ORD
1 stop7h 20mDelta
Deal found 10/13![Delta logo]()
$333
This Aeromexico deal was found by Cheapflights users on 10/12. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:57 pmORD - SLP
1 stop9h 14mAeromexico
Sat 11/225:47 amSLP - ORD
2 stops11h 30mAeromexico
Deal found 10/12![Aeromexico logo]()
$334
This United Airlines deal was found by Cheapflights users on 10/11. 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 11/82:21 pmORD - SLP
1 stop6h 39mUnited Airlines
Thu 11/1312:49 pmSLP - ORD
1 stop10h 21mUnited Airlines
Deal found 10/11![United Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:00 amMDW - SLP
2 stops13h 45mDelta
Tue 11/189:36 amSLP - MDW
2 stops14h 04mDelta
Deal found 10/13![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:34 amMDW - SLP
2 stops8h 44mDelta
Thu 12/49:36 amSLP - MDW
2 stops14h 13mDelta
Deal found 10/13![Delta logo]()
$343
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:18 amORD - SLP
1 stop16h 02mAmerican Airlines
Sat 11/226:15 amSLP - ORD
1 stop16h 42mAmerican Airlines
Deal found 10/13![American Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:00 amMDW - SLP
1 stop13h 18mDelta
Sun 11/28:28 amSLP - MDW
1 stop13h 46mDelta
Deal found 10/13![Delta logo]()
$366
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:45 amORD - SLP
1 stop12h 19mDelta
Sat 11/15:47 amSLP - ORD
1 stop7h 25mDelta
Deal found 10/13![Delta logo]()
$368
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:45 amORD - SLP
1 stop12h 19mDelta
Sat 11/15:47 amSLP - ORD
1 stop7h 25mDelta
Deal found 10/13![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:35 amMDW - SLP
1 stop8h 29mDelta
Sat 11/18:28 amSLP - MDW
1 stop12h 46mDelta
Deal found 10/13![Delta logo]()
$379
This Aeromexico deal was found by Cheapflights users on 10/12. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:45 amORD - SLP
1 stop12h 19mAeromexico
Sat 10/256:00 amSLP - ORD
1 stop16h 55mAeromexico
Deal found 10/12![Aeromexico logo]()
$381
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 October 14, 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
Thu 11/27
6:45 am-6:18 pm
1 stop11h 33m
San Luis Potosi
Thu 12/4
5:57 am-1:12 pm
1 stop7h 15m
$328
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Wed 11/12
11:37 am-6:18 pm
1 stop6h 41m
San Luis Potosi
Wed 11/19
5:52 am-1:12 pm
1 stop7h 20m
$328
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Tue 2/10
2:27 pm-11:37 pm
1 stop9h 10m
San Luis Potosi
Sat 2/14
10:08 am-11:54 pm
2 stops13h 46m
$334
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Sat 1/31
1:00 am-2:57 pm
1 stop13h 57m
San Luis Potosi
Sun 2/8
12:33 pm-11:54 pm
2 stops11h 21m
$334
ChicagoSan Luis Potosí
ORD - SLP
ORDSLP
Chicago O'Hare Intl
Sun 11/9
7:10 am-9:00 pm
1 stop13h 50m
San Luis Potosi
Thu 11/20
12:49 pm-11:10 pm
1 stop10h 21m
$338
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Thu 11/27
10:47 am-6:18 pm
1 stop7h 31m
San Luis Potosi
Thu 12/4
12:42 pm-11:49 pm
2 stops11h 07m
$338
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Sat 1/10
10:35 am-5:50 pm
1 stop7h 15m
San Luis Potosi
Mon 1/19
10:00 am-9:46 pm
1 stop11h 46m
$338
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Sat 11/8
10:35 am-6:18 pm
1 stop7h 43m
San Luis Potosi
Thu 11/13
9:36 am-11:40 pm
2 stops14h 04m
$338
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Sat 1/31
6:00 am-5:49 pm
1 stop11h 49m
San Luis Potosi
Sat 2/21
10:00 am-9:46 pm
1 stop11h 46m
$338
ChicagoSan Luis Potosí
MDW - SLP
MDWSLP
Chicago Midway
Tue 11/11
10:47 am-6:18 pm
1 stop7h 31m
San Luis Potosi
Tue 11/18
8:28 am-4:38 pm
1 stop8h 10m
$338
Showing 1-10 of 27 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 $239). 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 October 14, 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.
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 October 14, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$377 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$337 | Average$462 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$503 | FlexibilityNo cancel fee | On-time71% |