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San Luis Potosí

$246+ Cheap flights from Washington, D.C. (WAS) 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SLP
Mar 29 — Apr 51
Sun 3/29
Sun 4/5
1 adult, Economy
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Cheap 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 February 27, 2026.

This United Airlines deal was found by Cheapflights users on 2/26. 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 8/156:17 am
BWI
-
SLP
2 stops14h 55m
United Airlines
Sat 8/297:12 am
SLP
-
BWI
1 stop7h 13m
United Airlines
Deal found 2/26$385
This Delta deal was found by Cheapflights users on 2/26. 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.
Mon 3/21:01 pm
BWI
-
SLP
2 stops11h 54m
Delta
Mon 3/98:22 am
SLP
-
BWI
1 stop11h 52m
Delta
Deal found 2/26$395
This Delta deal was found by Cheapflights users on 2/23. 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 4/97:28 am
BWI
-
SLP
1 stop10h 37m
Delta
Thu 4/169:05 am
SLP
-
BWI
1 stop11h 25m
Delta
Deal found 2/23$396
This Aeromexico deal was found by Cheapflights users on 2/23. 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.
Thu 4/96:00 am
BWI
-
SLP
1 stop12h 05m
Aeromexico
Thu 4/166:10 am
SLP
-
BWI
2 stops14h 20m
Aeromexico
Deal found 2/23$444
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Thu 4/25:50 pm
BWI
-
SLP
1 stop18h 59m
United Airlines
Sat 4/117:12 am
SLP
-
BWI
1 stop7h 12m
United Airlines
Deal found 2/26$452
This Delta deal was found by Cheapflights users on 2/26. 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 4/127:28 am
BWI
-
SLP
1 stop10h 37m
Delta
Sun 4/199:05 am
SLP
-
BWI
1 stop11h 25m
Delta
Deal found 2/26$467
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Thu 4/25:50 pm
BWI
-
SLP
1 stop27h 22m
United Airlines
Mon 4/611:45 am
SLP
-
BWI
2 stops19h 54m
United Airlines
Deal found 2/27$475
This Delta deal was found by Cheapflights users on 2/25. 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 3/118:38 am
BWI
-
SLP
2 stops14h 48m
Delta
Wed 3/188:34 am
SLP
-
BWI
2 stops14h 19m
Delta
Deal found 2/25$480
This United Airlines deal was found by Cheapflights users on 2/26. 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 3/96:05 am
BWI
-
SLP
1 stop6h 44m
United Airlines
Wed 3/1111:49 am
SLP
-
BWI
1 stop8h 41m
United Airlines
Deal found 2/26$485
This Frontier deal was found by Cheapflights users on 2/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:25 am
BWI
-
SLP
1 stop10h 54m
Frontier
Wed 4/87:12 am
SLP
-
BWI
1 stop10h 06m
Frontier
Deal found 2/26$487
This Delta deal was found by Cheapflights users on 2/24. 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 5/284:55 pm
IAD
-
SLP
1 stop8h 20m
Delta
Wed 6/36:10 am
SLP
-
IAD
1 stop7h 00m
Delta
Deal found 2/24$557
This Delta deal was found by Cheapflights users on 2/24. 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 4/295:05 pm
IAD
-
SLP
1 stop8h 10m
Delta
Wed 5/139:05 am
SLP
-
IAD
1 stop13h 46m
Delta
Deal found 2/24$567

Find 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 February 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$385
(United Airlines)

One-way from

$246
(Kiwi.com)

Popular in

January

Cheapest in

August
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
One-way flight from Washington, D.C. (WAS) to San Luis Potosi
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
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 February 27, 2026.
Use the filters below to find and compare flights from Washington, D.C. to San Luis Potosí that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Sat 8/15

6:17 am-7:12 pm

2 stops14h 55m

San Luis Potosi

Sat 8/29

7:12 am-4:25 pm

1 stop7h 13m

$385

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 4/9

7:28 am-4:05 pm

1 stop10h 37m

San Luis Potosi

Thu 4/16

9:05 am-10:30 pm

1 stop11h 25m

$396

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 4/9

6:00 am-4:05 pm

1 stop12h 05m

San Luis Potosi

Thu 4/16

6:10 am-10:30 pm

2 stops14h 20m

$444

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 4/2

5:50 pm-7:12 pm

1 stop27h 22m

San Luis Potosi

Mon 4/6

11:45 am-9:39 am

2 stops19h 54m

$475

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 3/9

6:05 am-10:49 am

1 stop6h 44m

San Luis Potosi

Wed 3/11

11:49 am-10:30 pm

1 stop8h 41m

$485

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Wed 4/1

6:00 am-7:12 pm

2 stops15h 12m

San Luis Potosi

Wed 4/8

7:12 am-11:37 am

1 stop26h 25m

$502

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 4/2

8:38 am-4:05 pm

1 stop9h 27m

San Luis Potosi

Mon 4/6

9:05 am-10:14 pm

1 stop11h 09m

$521

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Wed 3/11

5:04 pm-8:00 pm

1 stop28h 56m

San Luis Potosi

Wed 3/18

11:49 am-10:30 pm

1 stop8h 41m

$545

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 5/28

1:32 pm-11:15 pm

2 stops11h 43m

San Luis Potosi

Wed 6/3

6:10 am-3:10 pm

1 stop7h 00m

$561

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 4/29

5:05 pm-11:15 pm

1 stop8h 10m

San Luis Potosi

Wed 5/13

6:10 am-9:24 pm

2 stops13h 14m

$567

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 22 resultsSorted by cheapest first
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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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 FlightHub the most. FlightHub 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, January is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $358). Flying from Washington, D.C. to San Luis Potosí in February is currently the most expensive (average of $596). 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.

How much does it cost to fly round-trip from Washington, D.C. to San Luis Potosí?

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 2 airlines. 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 10h 37m. Washington, D.C. and San Luis Potosí are separated by a distance of 1844 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Washington, D.C. to San Luis Potosí round-trip?

    According to our current data, United Airlines ($407), offers the cheapest pricing from Washington, D.C. to San Luis Potosí. United Airlines is currently priced 31% below the average price you’ll pay for this route.

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

    While some choose either Baltimore/Washington - San Luis Potosi or Washington, D.C. Reagan-National - 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, January is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $358). Flying from Washington, D.C. to San Luis Potosí in February is currently the most expensive (average of $596). 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.

Complete your trip

Complete your trip to San Luis Potosí by adding a car rental and/or hotel reservation to your travel itinerary.
Aguascalients Airport car rentals
San Luis Potosi Airport car rentals

Top 2 airlines flying from Washington, D.C. to San Luis Potosí

Discover the top 2 airlines 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 February 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$388Average$710FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$407Average$550FlexibilityNo cancel feeOn-time69%

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