$207+ Cheap flights from Pennsylvania 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SLP
Feb 10 — Feb 171
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
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 Pennsylvania to San Luis Potosí
Keep the following information in mind while searching for Pennsylvania to San Luis Potosí flight deals. Data was last updated January 11, 2026.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $363 (Delta) |
One-way from | $207 (American Airlines) |
Find flight deals from Pennsylvania to San Luis Potosí
Cheapest flights from Pennsylvania to San Luis PotosíExplore the most affordable flight options available from Pennsylvania to San Luis Potosí. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 11, 2026.
Explore the most affordable flight options available from Pennsylvania to San Luis Potosí. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 11, 2026.
This Delta deal was found by Cheapflights users on 1/10. 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 4/295:09 pmIAD - SLP
1 stop7h 58mDelta
Wed 5/135:52 amSLP - IAD
1 stop7h 25mDelta
Deal found 1/10![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 1/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:09 pmIAD - SLP
1 stop9h 02mDelta
Wed 5/135:52 amSLP - IAD
1 stop7h 25mDelta
Deal found 1/9![Delta logo]()
$365
This Delta deal was found by Cheapflights users on 1/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:09 pmIAD - SLP
1 stop9h 02mDelta
Fri 5/155:52 amSLP - IAD
1 stop7h 25mDelta
Deal found 1/9![Delta logo]()
$366
This Aeromexico deal was found by Cheapflights users on 1/8. 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.
Sat 2/76:00 amIAD - SLP
1 stop13h 25mAeromexico
Sat 2/145:46 amSLP - IAD
1 stop6h 59mAeromexico
Deal found 1/8![Aeromexico logo]()
$371
This Delta deal was found by Cheapflights users on 1/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:09 pmIAD - SLP
1 stop8h 31mDelta
Wed 6/35:52 amSLP - IAD
2 stops13h 24mDelta
Deal found 1/9![Delta logo]()
$373
This Delta deal was found by Cheapflights users on 1/10. 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.
Thu 3/191:45 pmDCA - SLP
2 stops12h 14mDelta
Mon 3/238:22 amSLP - DCA
1 stop11h 19mDelta
Deal found 1/10![Delta logo]()
$378
This Aeromexico deal was found by Cheapflights users on 1/8. 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.
Sat 2/78:00 amDCA - SLP
1 stop11h 25mAeromexico
Sat 2/148:29 amSLP - DCA
1 stop7h 31mAeromexico
Deal found 1/8![Aeromexico logo]()
$381
This American Airlines deal was found by Cheapflights users on 1/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/156:00 amEWR - SLP
1 stop8h 31mAmerican Airlines
Thu 1/227:00 amSLP - EWR
1 stop16h 29mAmerican Airlines
Deal found 1/9![American Airlines logo]()
$384
This Aeromexico deal was found by Cheapflights users on 1/8. 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 2/177:15 amIAD - SLP
2 stops17h 44mAeromexico
Thu 2/197:17 pmSLP - IAD
2 stops22h 52mAeromexico
Deal found 1/8![Aeromexico logo]()
$388
This Aeromexico deal was found by Cheapflights users on 1/8. 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 2/176:59 amDCA - SLP
2 stops15h 02mAeromexico
Thu 2/195:48 amSLP - DCA
2 stops15h 45mAeromexico
Deal found 1/8![Aeromexico logo]()
$394
This American Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 11/1112:59 pmDCA - SLP
1 stop11h 37mAmerican Airlines
Tue 11/176:15 amSLP - DCA
1 stop15h 45mAmerican Airlines
Deal found 1/10![American Airlines logo]()
$398
This American Airlines deal was found by Cheapflights users on 1/10. 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 1/178:10 amEWR - SLP
1 stop16h 30mAmerican Airlines
Tue 1/202:21 pmSLP - EWR
1 stop9h 08mAmerican Airlines
Deal found 1/10![American Airlines logo]()
$409
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania 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 January 11, 2026.
Use the filters below to find and compare flights from Pennsylvania to San Luis Potosí that are best for you.
Fly from
Pennsylvania
Fly to
San Luis Potosí
Route
Depart
Return
Price
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Wed 4/29
5:09 pm-11:07 pm
1 stop7h 58m
San Luis Potosi
Wed 5/13
5:52 am-3:17 pm
1 stop7h 25m
$363
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Wed 5/6
5:09 pm-11:07 pm
1 stop7h 58m
San Luis Potosi
Wed 5/13
5:52 am-3:17 pm
1 stop7h 25m
$363
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Thu 5/28
5:09 pm-11:40 pm
1 stop8h 31m
San Luis Potosi
Wed 6/3
5:52 am-3:17 pm
1 stop7h 25m
$363
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Fri 5/1
5:09 pm-12:11 am
1 stop9h 02m
San Luis Potosi
Wed 5/13
5:52 am-3:17 pm
1 stop7h 25m
$365
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Fri 5/1
5:09 pm-12:11 am
1 stop9h 02m
San Luis Potosi
Fri 5/15
5:52 am-3:17 pm
1 stop7h 25m
$366
Washington, D.C.San Luis Potosí
IAD - SLP
IADSLP
Washington, D.C. Dulles Intl
Fri 5/8
5:09 pm-12:11 am
1 stop9h 02m
San Luis Potosi
Fri 5/22
5:52 am-3:17 pm
1 stop7h 25m
$366
Washington, D.C.San Luis Potosí
DCA - SLP
DCASLP
Washington, D.C. Reagan-National
Thu 3/19
7:59 am-6:18 pm
1 stop12h 19m
San Luis Potosi
Mon 3/23
8:22 am-10:42 pm
1 stop12h 20m
$378
Washington, D.C.San Luis Potosí
DCA - SLP
DCASLP
Washington, D.C. Reagan-National
Thu 3/19
1:45 pm-11:59 pm
2 stops12h 14m
San Luis Potosi
Mon 3/23
8:22 am-9:41 pm
1 stop11h 19m
$378
Washington, D.C.San Luis Potosí
DCA - SLP
DCASLP
Washington, D.C. Reagan-National
Sat 2/7
8:00 am-6:25 pm
1 stop11h 25m
San Luis Potosi
Sat 2/14
8:29 am-5:00 pm
1 stop7h 31m
$381
Washington, D.C.San Luis Potosí
DCA - SLP
DCASLP
Washington, D.C. Reagan-National
Tue 2/17
6:59 am-11:59 pm
2 stops18h 00m
San Luis Potosi
Thu 2/19
8:29 am-6:29 pm
1 stop9h 00m
$394
Showing 1-10 of 33 results
Best time to book a flight from Pennsylvania to San Luis Potosí
Have a flexible travel schedule? Discover the best time to fly to San Luis Potosí from Pennsylvania 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 Pennsylvania to San Luis Potosí
What is the cheapest month to book a flight from Pennsylvania to San Luis Potosí?
Currently, December is the cheapest month in which you can book a flight from Pennsylvania to San Luis Potosí (average of $303). Flying from Pennsylvania to San Luis Potosí in August is currently the most expensive (average of $593). 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.