HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Luis Potosí

$374+ Cheap flights from Washington, D.C. (WAS) 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SLP
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. 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.

Find flight deals from Washington, D.C. to San Luis Potosí

Cheapest flights from Washington, D.C. to San Luis Potosí
Explore the most affordable flight options available from Washington, D.C. 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 11/56:30 amDCA - SLP
1 stop7h 11mAmerican Airlines
Tue 11/116:15 amSLP - DCA
1 stop12h 35mAmerican Airlines
Deal found 10/30$374
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 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.
Sun 12/148:15 amDCA - SLP
1 stop13h 39mUnited Airlines
Sun 12/216:00 amSLP - DCA
1 stop16h 49mUnited Airlines
Deal found 10/30$382
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 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 11/196:00 amBWI - SLP
1 stop13h 18mDelta
Wed 11/268:28 amSLP - BWI
1 stop8h 54mDelta
Deal found 10/29$394
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:20 amDCA - SLP
2 stops11h 08mDelta
Tue 11/115:52 amSLP - DCA
2 stops13h 49mDelta
Deal found 10/30$394
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 10/3110:15 amDCA - SLP
1 stop11h 50mAmerican Airlines
Fri 11/146:15 amSLP - DCA
1 stop15h 45mAmerican Airlines
Deal found 10/30$424
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 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 10/316:14 amBWI - SLP
1 stop15h 51mAmerican Airlines
Fri 11/146:15 amSLP - BWI
1 stop15h 47mAmerican 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 12/158:15 amDCA - SLP
1 stop13h 39mUnited Airlines
Sun 2/156:00 amSLP - DCA
1 stop11h 44mUnited 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
Sun 2/156:00 amSLP - IAD
1 stop13h 41mUnited Airlines
Deal found 10/30$444

Cheap flight deals from Washington, D.C. to San Luis Potosí

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$321
(American Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-San Luis Potosi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Luis Potosi flights.
Search Deals
From Washington, D.C. (WAS) to San Luis Potosi
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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. to San Luis Potosí that are best for you.

Fly from

Washington, D.C.

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

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Sun 12/14

8:15 am-8:54 pm

1 stop13h 39m

San Luis Potosi

Sun 12/21

6:00 am-11:49 pm

1 stop16h 49m

$382

Washington, D.C.San Luis Potosí

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Sat 1/24

7:00 am-6:19 pm

1 stop12h 19m

San Luis Potosi

Tue 2/3

8:33 am-10:59 pm

2 stops13h 26m

$384

Washington, D.C.San Luis Potosí

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Sat 1/24

11:00 am-9:00 pm

1 stop11h 00m

San Luis Potosi

Tue 2/3

12:49 pm-11:59 pm

1 stop10h 10m

$384

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 3/9

12:15 pm-12:05 am

2 stops13h 50m

San Luis Potosi

Tue 3/10

5:48 am-12:11 am

2 stops16h 23m

$388

Washington, D.C.San Luis Potosí

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Tue 3/3

6:05 am-8:52 pm

2 stops15h 47m

San Luis Potosi

Thu 3/5

5:48 am-9:16 pm

2 stops14h 28m

$388

Washington, D.C.San Luis Potosí

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Tue 3/3

12:05 pm-12:05 am

2 stops13h 00m

San Luis Potosi

Thu 3/5

5:48 am-5:06 pm

2 stops10h 18m

$388

Washington, D.C.San Luis Potosí

DCA - SLP

DCASLP

Washington, D.C. Reagan-National

Thu 1/1

8:15 am-8:54 pm

1 stop13h 39m

San Luis Potosi

Wed 1/14

6:00 am-6:41 pm

1 stop11h 41m

$388

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 results
1
2

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to San Luis Potosí in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice 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.-San Luis Potosí flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-San Luis Potosí flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-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.-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.-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 Washington, D.C. to San Luis Potosí

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

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

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $398). Flying from Washington, D.C. to San Luis Potosí in December is currently the most expensive (average of $761). 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.

Reviews of airlines servicing San Luis Potosí

Get insights into the airlines that provide service to San Luis Potosí. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Luis Potosí. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with American Airlines from Washington, D.C. to San Luis Potosí by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,034 reviews

Comfort

7.2

Boarding

7.5

Food

6.4

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,034 reviews
American Airlines
7.2
Good
11,034 reviews

Comfort

7.2

Boarding

7.5

Food

6.4

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    Most people fly into San Luis Potosi (SLP) if they book a flight to San Luis Potosí from Washington, D.C.. On average, San Luis Potosi has 0 inbound flights from Washington, D.C. per day from 1 airline. San Luis Potosi is conveniently located just 7.8 mi from San Luis Potosí’s city center.

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

    Departing from Washington, D.C. to San Luis Potosí will take you 8h 01m. Washington, D.C. and San Luis Potosí are separated by a distance of 1800 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Washington, D.C. to San Luis Potosí?

    While some choose either Washington, D.C. Reagan-National - San Luis Potosi or Baltimore/Washington - San Luis Potosi, Washington, D.C. Dulles Intl - San Luis Potosi is the most popular route from Washington, D.C. to San Luis Potosí.

  • Can I find deals for flights from Washington, D.C. to San Luis Potosí that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. 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 Washington, D.C. to San Luis Potosí.

  • Can I find deals for business class flights from Washington, D.C. to San Luis Potosí?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to San Luis Potosí?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $398). Flying from Washington, D.C. to San Luis Potosí in December is currently the most expensive (average of $761). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to San Luis Potosí

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to San Luis Potosí flights

Top airline flying from Washington, D.C. to San Luis Potosí

Discover the top airline that operate flights from Washington, D.C. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$498Average$730FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.