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San Luis Potosí

$374+ Cheap flights from Dulles Intl (IAD) to San Luis Potosí, Mexico (SLP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SLP
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$374
(Aeromexico)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San Luis Potosi flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San Luis Potosi flights.
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From Washington, D.C. Dulles Intl to San Luis Potosi
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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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/30. 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 11/56:04 amIAD - SLP
1 stop7h 37mAmerican Airlines
Tue 11/116:15 amSLP - IAD
2 stops15h 52mAmerican Airlines
Deal found 10/30$379
This Delta deal was found by Cheapflights users on 10/29. 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 11/194:01 pmIAD - SLP
1 stop8h 01mDelta
Wed 11/265:52 amSLP - IAD
1 stop7h 10mDelta
Deal found 10/29$380
This Delta deal was found by Cheapflights users on 10/29. 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 11/57:05 amIAD - SLP
1 stop12h 13mDelta
Tue 11/115:52 amSLP - IAD
1 stop7h 10mDelta
Deal found 10/29$384
This American Airlines deal was found by Cheapflights users on 10/30. 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 10/316:11 amIAD - SLP
1 stop15h 54mAmerican Airlines
Fri 11/146:15 amSLP - IAD
1 stop15h 18mAmerican Airlines
Deal found 10/30$424
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 12/156:00 amIAD - SLP
1 stop15h 54mUnited Airlines
Sun 2/156:00 amSLP - IAD
1 stop13h 41mUnited Airlines
Deal found 10/30$444
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 12/156:00 amIAD - SLP
1 stop15h 54mUnited Airlines
Thu 1/1512:49 pmSLP - IAD
1 stop8h 29mUnited Airlines
Deal found 10/30$448
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 12/156:00 amIAD - SLP
1 stop15h 54mUnited Airlines
Wed 1/1412:49 pmSLP - IAD
1 stop7h 00mUnited Airlines
Deal found 10/30$465
This American Airlines deal was found by Cheapflights users on 10/30. 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 12/1511:25 amIAD - SLP
2 stops26h 19mAmerican Airlines
Wed 1/142:21 pmSLP - IAD
2 stops19h 37mAmerican Airlines
Deal found 10/30$502
This American Airlines deal was found by Cheapflights users on 10/30. 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 12/1511:25 amIAD - SLP
2 stops26h 19mAmerican Airlines
Sun 2/151:21 pmSLP - IAD
2 stops18h 23mAmerican Airlines
Deal found 10/30$507
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Wed 12/106:00 amIAD - SLP
1 stop15h 54mUnited Airlines
Sat 1/1012:49 pmSLP - IAD
1 stop8h 29mUnited Airlines
Deal found 10/30$535

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 October 30, 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

Mon 3/9

4:15 pm-7:58 am

1 stop17h 43m

San Luis Potosi

Tue 3/10

7:12 pm-2:45 pm

1 stop17h 33m

$374

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 11/19

4:01 pm-11:02 pm

1 stop8h 01m

San Luis Potosi

Wed 11/26

5:52 am-2:02 pm

1 stop7h 10m

$380

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 11/19

6:04 am-9:20 pm

1 stop16h 16m

San Luis Potosi

Wed 11/26

1:31 pm-1:12 pm

2 stops22h 41m

$389

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Mon 12/15

6:00 am-8:54 pm

1 stop15h 54m

San Luis Potosi

Wed 1/14

12:49 pm-8:49 pm

1 stop7h 00m

$465

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Mon 12/15

11:25 am-12:44 pm

2 stops26h 19m

San Luis Potosi

Wed 1/14

2:21 pm-10:58 am

2 stops19h 37m

$502

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 12/10

6:00 am-8:54 pm

1 stop15h 54m

San Luis Potosi

Sat 1/10

12:49 pm-10:18 pm

1 stop8h 29m

$535

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 1/1

3:36 pm-12:20 am

1 stop9h 44m

San Luis Potosi

Wed 1/14

5:48 am-1:45 pm

1 stop6h 57m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Dulles Intl to San Luis Potosí

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San Luis Potosí in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Luis Potosí flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Luis Potosí flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Luis Potosí flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Luis Potosí flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San Luis Potosí flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí?

    Airlines like Aeromexico, Delta, and American Airlines fly from Washington, D.C. Dulles Intl Airport to San Luis Potosí in about 8h 01m. The time it takes to get you to your destination can typically vary by up to 9h 42m. Washington, D.C. Dulles Intl Airport and San Luis Potosí are separated by a distance of 1800 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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