Cheap flights from Washington, D.C. to Cancún from $139

If you don’t want to visit Cancún in September, then you should wait until August to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $482.

The cheapest day to depart from Washington, D.C. to Cancún is on a Monday when prices can be found for as low as $523. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $632. 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. to Cancún during this time can be as low as $557. Flights to Cancún are more costly in the afternoon, with an average ticket price of $829. 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. - Cancun flight prices

You are more likely to see cheaper flights to Cancún from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $566 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. for as low as $505 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to Cancún flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to Cancún from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Cancún. Keep in mind that there are 8 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% 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 144 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.

Friday 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.

Atlanta (ATL) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

Flights via Houston (IAH) offer the lowest average round-trip price of $303.

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 5h 20m.

Charlotte (CLT) has the shortest average layover time for this route: 1h 24m.

As of July 2026, there are 3 flights per day flying from Washington, D.C. to Cancún. The most common time of day flights depart is 1:00PM, with 70% of flights taking off at noon.

As of July 2026, 24 flights take off from Washington, D.C. and land in Cancún each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.