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San Luis Potosí

$185+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SLP
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/16. 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 12/266:07 pmIAD - SLP
1 stop29h 52mAmerican Airlines
Sat 1/36:20 amSLP - IAD
2 stops25h 22mAmerican Airlines
Deal found 12/16$645
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/266:00 amBWI - SLP
1 stop17h 59mAmerican Airlines
Sat 1/36:20 amSLP - BWI
1 stop15h 38mAmerican Airlines
Deal found 12/17$954
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/216:00 amBWI - SLP
1 stop17h 59mAmerican Airlines
Fri 1/21:33 pmSLP - BWI
1 stop8h 25mAmerican Airlines
Deal found 12/15$1,166
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/266:04 pmBWI - SLP
1 stop27h 50mUnited Airlines
Sat 1/36:00 amSLP - BWI
2 stops22h 24mUnited Airlines
Deal found 12/17$1,233
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Sun 12/2110:42 amBWI - SLP
1 stop9h 33mMultiple Airlines
Fri 1/25:00 pmSLP - BWI
2 stops15h 27mMultiple Airlines
Deal found 12/17$1,253
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Fri 12/2610:42 amBWI - SLP
1 stop9h 33mMultiple Airlines
Sat 1/37:09 amSLP - BWI
2 stops33h 03mMultiple Airlines
Deal found 12/16$1,294
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/212:59 pmDCA - SLP
1 stop9h 00mAmerican Airlines
Fri 1/21:33 pmSLP - DCA
1 stop8h 26mAmerican Airlines
Deal found 12/15$1,367
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/216:05 amIAD - SLP
1 stop17h 54mAmerican Airlines
Fri 1/26:20 amSLP - IAD
1 stop9h 45mAmerican Airlines
Deal found 12/17$1,612
This Delta deal was found by Cheapflights users on 12/15. 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 12/218:00 amDCA - SLP
2 stops11h 07mDelta
Fri 1/29:56 amSLP - DCA
2 stops12h 00mDelta
Deal found 12/15$1,731
This Delta deal was found by Cheapflights users on 12/15. 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 12/2110:24 amBWI - SLP
2 stops14h 26mDelta
Fri 1/29:56 amSLP - BWI
2 stops9h 15mDelta
Deal found 12/15$2,083
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:43 pmIAD - SLP
3 stops30h 42mMultiple Airlines
Sat 1/37:09 amSLP - IAD
2 stops17h 31mMultiple Airlines
Deal found 12/16$2,349

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 December 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$293
(American Airlines)

One-way from

$185
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$774
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. 13% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 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

Thu 1/29

5:26 pm-11:40 pm

1 stop7h 14m

San Luis Potosi

Thu 2/5

7:00 am-4:31 pm

1 stop8h 31m

$293

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 1/15

6:00 am-1:31 pm

1 stop8h 31m

San Luis Potosi

Thu 1/22

7:00 am-4:31 pm

1 stop8h 31m

$293

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 2/5

5:26 pm-11:40 pm

1 stop7h 14m

San Luis Potosi

Thu 2/19

1:21 pm-8:43 am

2 stops18h 22m

$298

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Tue 1/27

6:00 am-1:31 pm

1 stop8h 31m

San Luis Potosi

Tue 2/3

2:21 pm-10:58 am

2 stops19h 37m

$298

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Thu 1/1

6:35 am-10:59 pm

2 stops17h 24m

San Luis Potosi

Sun 1/25

2:21 pm-10:58 am

2 stops19h 37m

$323

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 1/29

7:22 am-6:19 pm

1 stop11h 57m

San Luis Potosi

Thu 2/5

8:24 am-7:40 pm

1 stop10h 16m

$351

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Sun 1/11

11:34 am-1:31 pm

2 stops26h 57m

San Luis Potosi

Sat 1/17

7:00 am-4:31 pm

1 stop8h 31m

$366

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Fri 1/30

10:33 am-6:19 pm

1 stop8h 46m

San Luis Potosi

Fri 2/6

12:59 pm-12:41 am

2 stops10h 42m

$371

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 4/13

7:00 am-4:11 pm

1 stop11h 11m

San Luis Potosi

Sat 4/18

9:24 am-12:15 am

1 stop12h 51m

$371

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Sun 2/1

10:33 am-6:19 pm

1 stop8h 46m

San Luis Potosi

Thu 2/5

8:24 am-10:02 pm

1 stop12h 38m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 31 results
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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 December.
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, November is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $385). Flying from Washington, D.C. to San Luis Potosí in December is currently the most expensive (average of $791). 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?

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 December 18, 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
11,054 reviews

Food

6.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Overall

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,054 reviews
American Airlines
7.2
Good
11,054 reviews

Food

6.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Overall

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 7h 14m. 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 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 32% 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, November is the cheapest month in which you can book a flight from Washington, D.C. to San Luis Potosí (average of $385). Flying from Washington, D.C. to San Luis Potosí in December is currently the most expensive (average of $791). 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

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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 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$407Average$636FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$498Average$730FlexibilityNo cancel feeOn-time71%

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