IAD - SLP

$390 Find Cheap Flights from Washington, D.C. to San Luis Potosí

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to San Luis Potosí departing on 7/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Luis Potosí

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Luis Potosí, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Luis Potosí, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$578
Frontier
Mon 8/3Sat 8/29
IAD - SLP • 2 stops
Cheapest one-way
$390
United Airlines
Fri 7/17
IAD - SLP • 1 stop
Top airlines
Frontier
Cheapest • from $578 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and San Luis Potosí. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Dallas (DFW)
Cheapest • Avg $380 (round-trip)
Houston (IAH)
Shortest trip • 7h 19m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Luis Potosí!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to San Luis Potosí (IAD-SLP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to San Luis Potosí that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to San Luis Potosí

Mon, Aug 3 - Sat, Aug 29
Frontier Logo
8:57 pm - 1:24 pm
IAD
-
SLP
18h 27m
2 stops
Frontier Logo
2:48 pm - 10:16 am
SLP
-
IAD
17h 28m
2 stops
$578Frontier
Tue, Jun 30 - Tue, Jul 14
Delta Logo
4:50 pm - 11:14 pm
IAD
-
SLP
8h 24m
1 stop
Delta Logo
6:02 am - 3:20 pm
SLP
-
IAD
7h 18m
1 stop
$638Delta
Mon, Aug 3 - Sat, Aug 29
Delta Logo
4:50 pm - 11:55 pm
IAD
-
SLP
9h 05m
1 stop
Delta Logo
5:47 am - 3:17 pm
SLP
-
IAD
7h 30m
1 stop
$648Delta
Mon, Aug 3 - Sat, Aug 29
Delta Logo
4:50 pm - 11:55 pm
IAD
-
SLP
9h 05m
1 stop
Delta Logo
9:33 am - 12:33 am
SLP
-
IAD
13h 00m
2 stops
$658Delta
Sun, Jul 26 - Sun, Aug 9
Delta Logo
4:50 pm - 11:55 pm
IAD
-
SLP
9h 05m
1 stop
Delta Logo
6:02 am - 3:20 pm
SLP
-
IAD
7h 18m
1 stop
$688Delta
Sun, Jul 26 - Sun, Aug 9
Delta Logo
6:00 am - 1:00 pm
IAD
-
SLP
9h 00m
2 stops
Delta Logo
6:02 am - 3:20 pm
SLP
-
IAD
7h 18m
1 stop
$692Delta
Tue, Jun 30 - Tue, Jul 14
Delta Logo
6:00 am - 5:14 pm
IAD
-
SLP
13h 14m
2 stops
Delta Logo
6:02 am - 3:20 pm
SLP
-
IAD
7h 18m
1 stop
$744Delta
Mon, Aug 24 - Thu, Aug 27
Aeromexico Logo
5:09 pm - 11:02 pm
IAD
-
SLP
7h 53m
1 stop
Aeromexico Logo
5:52 am - 3:17 pm
SLP
-
IAD
7h 25m
1 stop
$748Aeromexico
Mon, Aug 24 - Thu, Aug 27
Aeromexico Logo
8:28 am - 11:02 pm
IAD
-
SLP
16h 34m
2 stops
Aeromexico Logo
5:52 am - 3:17 pm
SLP
-
IAD
7h 25m
1 stop
$752Aeromexico
Mon, Aug 24 - Thu, Aug 27
Aeromexico Logo
3:03 pm - 8:58 am
IAD
-
SLP
19h 55m
2 stops
Aeromexico Logo
9:47 am - 11:26 pm
SLP
-
IAD
11h 39m
2 stops
$762Aeromexico
Booking Insights

KAYAK's insights & trends for Washington, D.C. to San Luis Potosí flights

Get data-powered insights and trends into flights from Washington, D.C. to San Luis Potosí to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. to San Luis Potosí?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to San Luis Potosí were found on Frontier ($578) and Delta ($638).

Find deals

Good to know

Cheapest flight$390
Flight from Washington, D.C. to San Luis Potosí

When to book flights from Washington, D.C. to San Luis Potosí

Are your dates flexible? Find out the best times to travel from Washington, D.C. to San Luis Potosí based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to San Luis Potosí flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to San Luis Potosí was $390 for a one-way ticket and $578 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and San Luis Potosí?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in San Luis Potosí.

  • Which airports will I be using when flying from Washington, D.C. to San Luis Potosí?

    When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at San Luis Potosí, also known as San Luis Potosi.

  • Which aircraft models fly most regularly from Washington, D.C. to San Luis Potosí?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to San Luis Potosí?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and San Luis Potosí.

  • How does KAYAK find such low prices on flights from Washington, D.C. to San Luis Potosí?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to San Luis Potosí.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to San Luis Potosí?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Luis Potosí from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to San Luis Potosí?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Luis Potosí with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and SLP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to San Luis Potosí?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Luis Potosí from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Washington, D.C. to San Luis Potosí

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San Luis Potosí. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to San Luis Potosí? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9737 reviews
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

8.0 ExcellentDonna, May 2026
IAD - ATH
Read more United Airlines reviews

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Everything you need to know for your flight from Washington, D.C. to San Luis Potosí

Information on your arrival and departure airports

Washington, D.C. (IAD)
San Luis Potosí (SLP)