264 € Cheap Flights from Washington Dulles (IAD) to Cancun (CUN)

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Flight deals from Washington Dulles to Cancun

Looking for a cheap last-minute deal or the best return flight from Washington Dulles to Cancun? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Washington Dulles to Cancun

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Cancun flights are currently cheapest in January.

Direct flights from Washington Dulles to Cancun

Washington Dulles to Cancun: Alternative routes

Compare routes from Washington Dulles to Cancun below. You may find an airport to fly into that's cheaper, faster, or easier than Cancun.

Washington D.C. to Cancun: Flight information

The things to know before you go.
Cheapest flight found264 €
Cheapest month to flyJanuary
Average flight time3 hrs, 44 mins
Most popular airlineUnited
Average flights per week17

Finding cheap flights from Washington Dulles to Cancun: Frequently asked questions

The best price we found for a return flight from Washington Dulles to Cancun is 264 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 44 minutes is the average flight time from Washington Dulles to Cancun.
United flies direct from Washington Dulles to Cancun.
As of November 2025, there are 17 flights per week flying from Washington Dulles to Cancun.
The cheapest month to fly from Washington Dulles to Cancun is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Cancun Airport on Saturday, 3 January 2026.
Yes – the average flight time is 3 hours and 44 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Cancun but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Cancun is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Cancun.

Travelling from Washington Dulles International Airport (IAD) to Cancun International Airport (CUN): what you need to know

  • The average time for a direct flight from Washington Dulles International Airport to Cancun International Airport is 3 hours 45 minutes.

  • The timezone in Cancun is UTC-5, which is one hour behind Washington DC.

  • You can choose from 39 weekly Washington Dulles International Airport to Cancun International Airport flights. The 08:20 departure with United Airlines is the earliest available. United Airlines operates the latest service of the day at 17:50.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Get to the airport on time to board your IAD to CUN flight.

  • You'll likely experience longer lines during popular months such as April. Arriving up to four hours in advance for international flights and two hours for domestic departures is a smart move.

  • United Airlines has direct flights from Washington Dulles International Airport to Cancun International Airport. Book with this popular airline, then get ready to check out the sights in Cancun — and maybe even more of Mexico if your schedule allows.

  • Most passengers choose to fly with United Airlines on this route.

  • With 78.75% of its services arriving as planned, United Airlines is the most punctual carrier operating IAD to CUN flights.

  • If you want to include a stop along the way, just uncheck 'Direct flights only' when searching for your ticket from Washington Dulles International Airport to Cancun International Airport. These are the top stopovers between IAD and CUN:

    • Hartsfield-Jackson Atlanta International Airport

    • Charlotte Douglas International Airport

    • Detroit Metropolitan Wayne County Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Cancun International Airport (CUN)

  • At the moment, 114 € is the cheapest price we've found for a one-way Washington Dulles International Airport to Cancun International Airport flight. The best price for a return plane ticket is 264 €. Keep in mind that fares can change due to availability at the time of booking.

  • To score cheap tickets from IAD to CUN, book your journey seven months before your departure date.

  • Plan your trip for June. That's the cheapest month for flights from Washington Dulles International Airport to Cancun International Airport. If you have flexibility with your dates, try out the 'Whole month' tool to find the lowest price across every month.

  • Stay on top of deals for cheap flights from IAD to CUN by creating a Price Alert. We'll send you an email or notification through the app when a special offer becomes available.

  • Secure the right flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Washington Dulles International Airport to Cancun International Airport, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about Washington Dulles International Airport (IAD)

  • You'll find IAD at 1 Saarinen Circle.

  • Of the departures from Washington Dulles International Airport, 74.39% arrive as scheduled at their destination.

  • Washington Dulles International Airport is about 56 kilometres from central Washington DC. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 50 minutes or so to arrive, depending on the traffic.

  • Planning to take public transport? Expect a trip time of around 3 hours 25 minutes.

  • Need a handy hotel close to IAD? If you're catching an early flight from Washington Dulles International Airport to Cancun International Airport, these accommodation options will have you moments from your departure gate:

Arriving at Cancun International Airport (CUN)

Getting from Cancun International Airport (CUN) to central Cancun

  • Cancun International Airport is approximately 19 kilometres from the centre of Cancun. Driving there takes about 25 minutes.

When to fly to Cancun International Airport (CUN)

  • July is the busiest month for flights from Washington Dulles International Airport to Cancun International Airport. For a quieter experience, travel to Cancun in May.

  • When booking your flight from Washington Dulles International Airport to Cancun International Airport, think about the type of weather you like. August is the warmest month in Cancun, with temperatures ranging from 26ºC (79ºF) to 32ºC (90ºF).

  • If you like travelling in cooler conditions, look for a cheap ticket from IAD to CUN in January. Average temperatures are between 20ºC (68ºF) and 27ºC (81ºF) then.

Explore more of Mexico

  • Cancun is always a good idea, but there are so many other parts of Mexico waiting to be discovered. About 290 kilometres west of Cancun, a trip to Merida will keep you busy. Don't miss top attractions like P. ANDADOR NVA. CHICHEN ITZA, Pre Hispanic Town Of Uxmal and El Palacio de Gobierno.

  • Campeche is another sought-after destination in Mexico and is around 418 kilometres west of Cancun. No trip is complete without experiencing Campeche Waterfront Promenade, Zona Arquelogica Edzna and Centro Historico de San Francisco de Campeche.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.