$191 Cheap Delta flights Washington (IAD) to Cancun (CUN)

Landing cheap one-way Delta Air Lines flights from IAD to CUN from $191 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $401 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for one-way or round-trip flights to Cancun in October or September. You could find lower fares with Delta Air Lines during these off-season months.

Landing the best Delta Air Lines deals from IAD to CUN often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. To top it off, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is usually the most expensive day to book.* It’s smart to kick off your flight search about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To figure out if there’s a direct trip from IAD to CUN with Delta Air Lines or another carrier, check the “Nonstop” box when browsing for flights.

Search Delta Air Lines’s earliest flights from IAD to CUN by checking the “Early Morning” and “Morning” filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on a Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Cancun, and you’ll likely come in to Cancun Intl. Airport (CUN). This is the airline’s main hub in this city.

With an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a popular option for many travelers heading from IAD to CUN. Also, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to cancel or reschedule your flight, although additional charges may apply if your booking was made over 24 hours ago. Want to keep your options open? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you need to adjust your plans. To modify your itinerary, go to “Trips,” select your flight and click on “Manage Booking” for more information.