Cheap flights from Washington, D.C. Dulles Intl Airport to Cancún from $121

If you don’t want to visit Cancún in September, then you should wait until May to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $524.

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Cancún is on a Monday when prices can be found for as low as $539. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $643. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

Our most recent data shows that the best time of day to fly to Cancún is at noon. Flights from Washington, D.C. Dulles Intl Airport to Cancún during this time can be as low as $572. Flights to Cancún are more costly in the afternoon, with an average ticket price of $742. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Washington, D.C. Dulles Intl to Cancun for the best Washington, D.C. Dulles Intl - Cancun flight prices

You are more likely to see cheaper flights to Cancún from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $579 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from Washington, D.C. Dulles Intl Airport for as low as $502 on momondo.

You could potentially save up to 3% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Cancún flight.

As of May 2026, prices for Washington, D.C. Dulles Intl Airport to Cancún flights are approximately 11% more expensive when compared to flights at the same time last year.

United Airlines and Delta are the most popular carriers operating from Washington, D.C. Dulles Intl to Cancun

United Airlines, Frontier and Delta are the top three most popular airlines that fly to Cancún from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 89% of people opting to fly with this airline when traveling to Cancún. Keep in mind that there are 7 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between Washington, D.C. and Cancún have experienced a delay on any given week. The average delay length over the past 12 months has been 145 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

As of May 2026, there are 2 flights per day flying from Washington, D.C. Dulles Intl Airport to Cancún. The most common time of day flights depart is 8:00AM, with 50% of flights taking off at noon.

As of May 2026, 14 flights take off from Washington, D.C. Dulles Intl Airport and land in Cancún each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.