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£120 Cheap Flights from Washington (IAD) to Cancun (CUN)

View £120 flight on Mon, 17 Aug 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Cancun Intl. Airport (CUN)

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Cheap Flights from Washington (IAD) to Cancun (CUN)

Prices were available within the past 7 days and start at £120 for one-way flights and £251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aeromexico
Sat, 6 Feb - Sat, 27 Feb
IAD
Washington
CUN
Cancun
£251 Return, found 5 hours ago
£251
Return
found 5 hours ago
Select Aeromexico flight, departing Sat, 6 Feb from Washington to Cancun, returning Sat, 27 Feb, priced at £251 found 5 hours ago
Aeromexico
Fri, 2 Oct - Sun, 4 Oct
IAD
Washington
CUN
Cancun
£251 Return, found 1 day ago
£251
Return
found 1 day ago
Select Aeromexico flight, departing Fri, 2 Oct from Washington to Cancun, returning Sun, 4 Oct, priced at £251 found 1 day ago
Aeromexico
Wed, 19 Aug - Wed, 26 Aug
IAD
Washington
CUN
Cancun
£253 Return, found 4 days ago
£253
Return
found 4 days ago
Select Aeromexico flight, departing Wed, 19 Aug from Washington to Cancun, returning Wed, 26 Aug, priced at £253 found 4 days ago
Aeromexico
Thu, 17 Sept - Tue, 22 Sept
IAD
Washington
CUN
Cancun
£253 Return, found 6 days ago
£253
Return
found 6 days ago
Select Aeromexico flight, departing Thu, 17 Sept from Washington to Cancun, returning Tue, 22 Sept, priced at £253 found 6 days ago
Aeromexico
Sat, 6 Feb - Sat, 27 Feb
IAD
Washington
CUN
Cancun
£255 Return, found 5 hours ago
£255
Return
found 5 hours ago
Select Aeromexico flight, departing Sat, 6 Feb from Washington to Cancun, returning Sat, 27 Feb, priced at £255 found 5 hours ago
Aeromexico
Mon, 24 Aug - Thu, 27 Aug
IAD
Washington
CUN
Cancun
£255 Return, found 1 day ago
£255
Return
found 1 day ago
Select Aeromexico flight, departing Mon, 24 Aug from Washington to Cancun, returning Thu, 27 Aug, priced at £255 found 1 day ago
United
Fri, 25 Sept - Sat, 3 Oct
IAD
Washington
CUN
Cancun
£351 Return, found 6 days ago
£351
Return
found 6 days ago
Select United flight, departing Fri, 25 Sept from Washington to Cancun, returning Sat, 3 Oct, priced at £351 found 6 days ago
Air Canada
Mon, 24 Aug - Mon, 31 Aug
IAD
Washington
CUN
Cancun
£411 Return, found 3 hours ago
£411
Return
found 3 hours ago
Select Air Canada flight, departing Mon, 24 Aug from Washington to Cancun, returning Mon, 31 Aug, priced at £411 found 3 hours ago
avianca
Mon, 24 Aug - Mon, 31 Aug
IAD
Washington
CUN
Cancun
£578 Return, found 3 hours ago
£578
Return
found 3 hours ago
Select avianca flight, departing Mon, 24 Aug from Washington to Cancun, returning Mon, 31 Aug, priced at £578 found 3 hours ago
Copa
Fri, 25 Sept - Sat, 3 Oct
IAD
Washington
CUN
Cancun
£788 Return, found 6 days ago
£788
Return
found 6 days ago
Select Copa flight, departing Fri, 25 Sept from Washington to Cancun, returning Sat, 3 Oct, priced at £788 found 6 days ago

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Cancun, Quintana Roo (CUN-Cancun Intl.) cost?
You can find one-way and return flights from IAD to CUN with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to CUN ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cancun, Quintana Roo (CUN-Cancun Intl.)?
October is typically the cheapest month to fly from Washington Dulles International Airport (IAD) to Cancun International Airport (CUN), with average return fares around £336. October often sees lower prices because it falls outside of peak holiday seasons, when travel demand tends to decrease. Other cheap months to fly from Washington Dulles International Airport (IAD) to Cancun International Airport (CUN) include September and November.
Which airlines fly direct from Washington, DC (IAD) to Cancun, Quintana Roo (CUN)?
Enter IAD to CUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Washington, DC (IAD) to Cancun, Quintana Roo (CUN)?
To find a cheap flight from Washington, DC (IAD) to Cancun, Quintana Roo (CUN), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cancun, Quintana Roo (CUN-Cancun Intl.)?
The cheapest months to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cancun, Quintana Roo (CUN-Cancun Intl.) are typically September and October, with average return flights around £336. These months are a great option if you're looking for more affordable fares to Cancun.
What is the earliest flight from Washington, DC (IAD) to Cancun, Quintana Roo (CUN)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Washington, DC (IAD) to Cancun, Quintana Roo (CUN). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cancun, Quintana Roo (CUN-Cancun Intl.)?
A nonstop flight from IAD to CUN typically takes around 3 hours 50 minutes, covering approximately 2,185 kilometers. Connecting flights on this route usually add 5 hours 30 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD) to Cancun, Quintana Roo (CUN)?
Select the "Business class" and "First class" filters when looking for Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Washington, DC (IAD) to Cancun, Quintana Roo (CUN) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD) to Cancun, Quintana Roo (CUN) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flight and hotel package?
Securing a Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD) to Cancun, Quintana Roo (CUN)?
If you booked your Washington, DC (IAD) to Cancun, Quintana Roo (CUN) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Cancun Intl.
Airlines serving
Aeromexico, Air Canada, American Airlines, Copa, Delta, United, avianca
Return price
£250
Distance
2172 km
Average flight time
2 hours 42 mins

Book with confidence

Compare flights from Washington to Cancun easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Cancun. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Cancun Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Cancun Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Cancun Intl. (CUN)

The easiest way to view the best deals on flights from Washington to Cancun today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Cancun Intl. start at just £251 and range up to £788.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Cancun
  • booking your flight during February, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Cancun flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Cancun Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Washington to Cancun easily and book with confidence

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*Available to Expedia members.