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San Luis Potosí

$195+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SLP
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
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 May 22, 2026.

This American Airlines deal was found by Cheapflights users on 5/21. 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 11/43:23 pm
BWI
-
SLP
1 stop9h 13m
American Airlines
Wed 11/181:31 pm
SLP
-
BWI
1 stop8h 23m
American Airlines
Deal found 5/21$464
This American Airlines deal was found by Cheapflights users on 5/18. 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 5/297:10 pm
BWI
-
SLP
1 stop17h 38m
American Airlines
Mon 6/111:49 am
SLP
-
BWI
1 stop9h 55m
American Airlines
Deal found 5/18$490
This American Airlines deal was found by Cheapflights users on 5/19. 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 8/37:16 pm
BWI
-
SLP
1 stop17h 36m
American Airlines
Sat 8/2911:50 am
SLP
-
BWI
1 stop8h 09m
American Airlines
Deal found 5/19$520
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 8/37:27 pm
BWI
-
SLP
2 stops19h 57m
Multiple Airlines
Mon 8/311:51 pm
SLP
-
BWI
1 stop26h 16m
Multiple Airlines
Deal found 5/20$542
This Aeromexico deal was found by Cheapflights users on 5/20. 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 7/138:17 am
BWI
-
SLP
2 stops11h 17m
Aeromexico
Sat 7/187:03 pm
SLP
-
BWI
2 stops20h 12m
Aeromexico
Deal found 5/20$550
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/36:00 am
BWI
-
SLP
1 stop6h 49m
United Airlines
Mon 8/3111:45 am
SLP
-
BWI
2 stops20h 23m
United Airlines
Deal found 5/21$569
This Kiwi.com deal was found by Cheapflights users on 5/21. 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.
Wed 11/47:00 am
IAD
-
SLP
2 stops13h 10m
Multiple Airlines
Sun 11/151:20 pm
SLP
-
IAD
1 stop22h 15m
Multiple Airlines
Deal found 5/21$572
This Frontier deal was found by Cheapflights users on 5/19. 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.
Mon 8/38:57 pm
IAD
-
SLP
2 stops18h 27m
Frontier
Sat 8/292:48 pm
SLP
-
IAD
2 stops17h 28m
Frontier
Deal found 5/19$578
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Tue 6/307:27 pm
BWI
-
SLP
2 stops29h 04m
Multiple Airlines
Tue 7/142:48 pm
SLP
-
BWI
1 stop27h 48m
Multiple Airlines
Deal found 5/17$579
This Delta deal was found by Cheapflights users on 5/21. 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 8/36:21 am
BWI
-
SLP
2 stops16h 59m
Delta
Mon 8/319:36 am
SLP
-
BWI
2 stops12h 40m
Delta
Deal found 5/21$586
This Delta deal was found by Cheapflights users on 5/21. 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 11/44:39 pm
BWI
-
SLP
2 stops16h 24m
Delta
Wed 11/188:38 am
SLP
-
BWI
2 stops12h 59m
Delta
Deal found 5/21$591
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 11/27:00 am
IAD
-
SLP
2 stops13h 10m
Multiple Airlines
Sun 11/151:20 pm
SLP
-
IAD
1 stop22h 15m
Multiple Airlines
Deal found 5/21$592

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 May 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$464
(American Airlines)

One-way from

$195
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$589
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. 19% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 22, 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

Cheapest round-trip

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 8/3

7:16 pm-10:52 am

1 stop17h 36m

San Luis Potosi

Sat 8/29

11:50 am-9:59 pm

1 stop8h 09m

$520

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 8/3

6:00 am-10:49 am

1 stop6h 49m

San Luis Potosi

Mon 8/31

11:45 am-10:08 am

2 stops20h 23m

$569

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Wed 11/4

7:00 am-7:10 pm

2 stops13h 10m

San Luis Potosi

Sun 11/15

1:20 pm-12:35 pm

1 stop22h 15m

$572

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Tue 6/30

7:27 pm-10:31 pm

2 stops29h 04m

San Luis Potosi

Tue 7/14

2:48 pm-8:36 pm

1 stop27h 48m

$579

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 8/3

6:21 am-9:20 pm

2 stops16h 59m

San Luis Potosi

Mon 8/31

9:36 am-12:16 am

2 stops12h 40m

$586

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Wed 11/4

4:39 pm-8:03 am

2 stops16h 24m

San Luis Potosi

Wed 11/18

8:38 am-10:37 pm

2 stops12h 59m

$591

Washington, D.C.San Luis Potosí

IAD - SLP

IADSLP

Washington, D.C. Dulles Intl

Fri 11/6

7:00 am-7:10 pm

2 stops13h 10m

San Luis Potosi

Sun 11/15

1:20 pm-12:35 pm

1 stop22h 15m

$623

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 7/13

3:03 pm-7:12 pm

1 stop6h 09m

San Luis Potosi

Sat 7/18

7:12 am-10:45 pm

1 stop13h 33m

$636

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Mon 11/2

9:24 am-7:10 pm

2 stops10h 46m

San Luis Potosi

Sun 11/15

1:20 pm-11:11 am

1 stop20h 51m

$645

BaltimoreSan Luis Potosí

BWI - SLP

BWISLP

Baltimore/Washington

Thu 8/6

6:38 pm-7:12 pm

2 stops26h 34m

San Luis Potosi

Mon 8/10

7:12 am-1:58 pm

2 stops28h 46m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 49 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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 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 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
No data available for this route at this time. Please check back soon.

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 May 22, 2026.
Get a feel of what it's like to fly with United 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.
United Airlines
7.4
Good
9,751 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,751 reviews
United Airlines
7.4
Good
9,751 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 6h 49m. 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 29% 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 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

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

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 May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$407Average$678FlexibilityNo cancel feeOn-time69%

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