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San Luis Potosí

$330+ Cheap flights from Dulles Intl (IAD) 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SLP
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Dulles Intl to San Luis Potosí

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Luis Potosí (SLP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$590
(SmartFares)

One-way from

$330
(Delta)

Popular in

August

Cheapest in

February

Average price

$849
From Washington, D.C. Dulles Intl to San Luis Potosi
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One-way flight from Washington, D.C. Dulles Intl to San Luis Potosi
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Highest demand for flights based on searches. 4% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Dulles Intl to San Luis Potosí

Cheapest flights from Dulles Intl to San Luis Potosí
Explore the most affordable flight options available from Dulles Intl to San Luis Potosí. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:24 pmIAD - SLP
2 stops23h 26mMultiple Airlines
Wed 9/102:26 pmSLP - IAD
1 stop16h 51mMultiple Airlines
Deal found 8/13$525
This SmartFares deal was found by Cheapflights users on 8/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:27 pmIAD - SLP
1 stop16h 43mAeromexico
Sat 10/47:45 pmSLP - IAD
1 stop17h 25mAeromexico
Deal found 8/13$590
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 9/16:27 amIAD - SLP
1 stop6h 43mAmerican Airlines
Fri 9/1212:01 pmSLP - IAD
1 stop8h 44mAmerican Airlines
Deal found 8/13$695
This Delta deal was found by Cheapflights users on 8/12. 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.
Sun 12/143:51 pmIAD - SLP
1 stop9h 16mDelta
Thu 1/16:04 amSLP - IAD
1 stop6h 42mDelta
Deal found 8/12$701
This Aeromexico deal was found by Cheapflights users on 8/13. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:00 amIAD - SLP
2 stops12h 25mAeromexico
Fri 9/126:05 amSLP - IAD
2 stops16h 08mAeromexico
Deal found 8/13$755
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 8/186:27 amIAD - SLP
1 stop6h 43mAmerican Airlines
Wed 9/1012:01 pmSLP - IAD
1 stop8h 47mAmerican Airlines
Deal found 8/13$815
This Aeromexico deal was found by Cheapflights users on 8/13. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amIAD - SLP
2 stops15h 14mAeromexico
Wed 9/106:05 amSLP - IAD
2 stops15h 16mAeromexico
Deal found 8/13$855
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 12/146:36 amIAD - SLP
1 stop17h 24mAmerican Airlines
Thu 1/16:24 amSLP - IAD
2 stops25h 20mAmerican Airlines
Deal found 8/14$990

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 August 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Luis Potosí that are best for you.

Fly from

Dulles Intl

Fly to

San Luis Potosí

Route

Depart

Return

Price

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Sat 9/27

5:27 pm-8:10 am

1 stop16h 43m

San Luis Potosi

Sat 10/4

7:45 pm-3:10 pm

1 stop17h 25m

$590

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Mon 9/1

6:27 am-11:10 am

1 stop6h 43m

San Luis Potosi

Fri 9/12

12:01 pm-10:45 pm

1 stop8h 44m

$695

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Sun 12/14

3:51 pm-12:07 am

1 stop9h 16m

San Luis Potosi

Thu 1/1

6:04 am-1:46 pm

1 stop6h 42m

$701

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Sun 12/14

3:51 pm-12:07 am

1 stop9h 16m

San Luis Potosi

Thu 1/1

6:04 am-1:46 pm

1 stop6h 42m

$701

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Mon 9/1

6:00 am-4:25 pm

2 stops12h 25m

San Luis Potosi

Fri 9/12

6:05 am-12:13 am

2 stops16h 08m

$755

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Sun 12/14

6:36 am-11:00 pm

1 stop17h 24m

San Luis Potosi

Thu 1/1

6:24 am-8:44 am

2 stops25h 20m

$990

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Mon 9/8

5:27 pm-8:05 am

1 stop16h 38m

$330

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Fri 9/5

6:25 am-11:11 am

1 stop6h 46m

$334

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 9/3

5:27 pm-8:05 am

1 stop16h 38m

$375

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 9/4

12:20 pm-8:05 am

2 stops21h 45m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 15 results
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Best time to book a flight from Dulles Intl to San Luis Potosí

Have a flexible travel schedule? Discover the best time to fly to San Luis Potosí from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to San Luis Potosí

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí (average of $489). Flying from Washington, D.C. Dulles Intl Airport to San Luis Potosí in December is currently the most expensive (average of $867). 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.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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.

  • What airport do you fly into for flights to San Luis Potosí from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to San Luis Potosí, you will be flying into San Luis Potosi. San Luis Potosi (SLP) is just 7.8 mi from the center of the city. San Luis Potosi is the only San Luis Potosí airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to San Luis Potosi from Washington, D.C. Dulles Intl on a regular basis.

  • Can I find deals for flights from Dulles Intl to San Luis Potosí that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to San Luis Potosí flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to San Luis Potosí?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to San Luis Potosí.

  • Can I find deals for business class flights from Dulles Intl to San Luis Potosí?

    Yes. Cheapflights offers flight deals from Dulles Intl to San Luis Potosí by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí (average of $489). Flying from Washington, D.C. Dulles Intl Airport to San Luis Potosí in December is currently the most expensive (average of $867). 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.

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