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Cancún

$171+ Cheap flights from Dulles Intl (IAD) to Cancún (CUN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CUN
Aug 30 — Sep 61
Sun 8/30
Sun 9/6
1 adult, Economy
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Find cheap flights from Dulles Intl to Cancún with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Cancun are usually found in September or May, booked 29 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from Dulles Intl to Cancún

Cheapest flights from Dulles Intl to Cancún
Explore the most affordable flight options available from Dulles Intl to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.

This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:10 am
IAD
-
CUN
1 stop6h 25m
Delta
Wed 9/26:03 am
CUN
-
IAD
1 stop8h 17m
Delta
Deal found 7/29$359
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:57 am
IAD
-
CUN
1 stop6h 33m
American Airlines
Thu 9/33:37 pm
CUN
-
IAD
1 stop6h 18m
American Airlines
Deal found 7/27$360
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:10 am
IAD
-
CUN
1 stop9h 23m
American Airlines
Wed 9/212:08 pm
CUN
-
IAD
1 stop7h 48m
American Airlines
Deal found 7/28$361
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:07 pm
IAD
-
CUN
2 stops18h 28m
Delta
Fri 9/186:03 am
CUN
-
IAD
1 stop8h 17m
Delta
Deal found 7/29$363
This Aeromexico deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/133:38 pm
IAD
-
CUN
1 stop18h 52m
Aeromexico
Fri 12/186:00 am
CUN
-
IAD
1 stop8h 06m
Aeromexico
Deal found 7/26$364
This Aeromexico deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:38 pm
IAD
-
CUN
1 stop9h 50m
Aeromexico
Tue 12/158:50 pm
CUN
-
IAD
1 stop17h 16m
Aeromexico
Deal found 7/28$366
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:09 am
IAD
-
CUN
1 stop14h 54m
American Airlines
Thu 8/273:37 pm
CUN
-
IAD
1 stop6h 18m
American Airlines
Deal found 7/27$368
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:10 am
IAD
-
CUN
2 stops11h 19m
Delta
Fri 9/49:20 am
CUN
-
IAD
2 stops14h 14m
Delta
Deal found 7/29$369
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:03 am
IAD
-
CUN
1 stop7h 22m
Delta
Wed 10/286:06 am
CUN
-
IAD
1 stop8h 00m
Delta
Deal found 7/29$371
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:54 pm
IAD
-
CUN
2 stops23h 07m
Delta
Wed 8/2612:30 pm
CUN
-
IAD
1 stop11h 04m
Delta
Deal found 7/29$373
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:14 am
IAD
-
CUN
1 stop8h 21m
American Airlines
Mon 9/143:37 pm
CUN
-
IAD
1 stop6h 14m
American Airlines
Deal found 7/27$374
This Kissandfly.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:35 pm
IAD
-
CUN
Nonstop3h 37m
Lufthansa
Thu 9/311:14 am
CUN
-
IAD
Nonstop3h 18m
Lufthansa
Deal found 7/30$375

Find flight deals from Dulles Intl to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Cancún (CUN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Delta)

One-way from

$171
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$555

Good round-trip deal

$460 or less

Good one-way deal

$170 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Cancun flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Cancun flights.
Search Deals
From Washington, D.C. Dulles Intl to Cancun
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Cancun
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Cancun.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Cancun.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Cancún that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Sat 12/5

6:30 am-5:50 pm

1 stop11h 20m

Cancun

Fri 12/11

5:09 pm-8:29 pm

Nonstop3h 20m

$359

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Sun 8/30

8:28 am-1:00 pm

1 stop5h 32m

Cancun

Fri 9/4

6:03 am-3:20 pm

1 stop8h 17m

$359
Quickest round-trip

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Tue 9/8

8:26 am-11:05 am

Nonstop3h 39m

Cancun

Thu 9/24

4:18 pm-8:36 pm

Nonstop3h 18m

$364

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Tue 10/27

8:17 am-11:10 am

Nonstop3h 53m

Cancun

Fri 11/6

8:39 am-6:20 pm

1 stop9h 41m

$364

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Sat 9/19

3:15 pm-7:50 pm

1 stop5h 35m

Cancun

Tue 9/22

6:03 am-3:20 pm

1 stop8h 17m

$369

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Sat 10/3

12:52 pm-7:19 pm

1 stop7h 27m

Cancun

Wed 10/7

11:14 am-3:32 pm

Nonstop3h 18m

$406

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-7:55 pm

1 stop14h 55m

Cancun

Sat 10/17

6:04 am-3:20 pm

1 stop8h 16m

$452

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Fri 1/8

1:01 pm-4:55 pm

Nonstop3h 54m

Cancun

Wed 1/13

12:35 pm-3:59 pm

Nonstop3h 24m

$474

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Mon 1/11

8:17 am-12:10 pm

Nonstop3h 53m

Cancun

Sat 1/16

4:55 pm-8:19 pm

Nonstop3h 24m

$474

Washington, D.C.Cancún

IAD - CUN

IADCUN

Washington, D.C. Dulles Intl

Fri 1/22

10:10 pm-1:43 pm

1 stop15h 33m

Cancun

Fri 1/29

4:55 pm-8:19 pm

Nonstop3h 24m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dulles Intl to Cancún

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Cancún in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
SmartFaresPrice Accuracy1 starTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Cancún flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Cancún flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Cancún flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Cancún flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Cancún flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Cancún

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Cancún?

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Cancún. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Cancún?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cancún (average of $471). Flying from Washington, D.C. Dulles Intl Airport to Cancún in December is currently the most expensive (average of $613). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to CUN?

Find hourly flight availability from Dulles Intl to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2026.

When flying from Washington, D.C. Dulles Intl Airport to Cancún, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Cancún?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Cancún flights typically cost between $450 and $673 in August.
The cheapest round-trip price found within the last 5 days was $359 on Delta (Aug 28-Sep 2).

The best insider tips for Washington, D.C. Dulles Intl Airport to Cancún flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Cancún trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD and CUN

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cancún. Reviews last updated July 31, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Cancún, such as Delta,United Airlines, andAeromexico. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,494 reviews
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,057 reviews
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Aeromexico
7.4
Good
1,470 reviews
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,849 reviews
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Frontier
5.6
Fair
2,746 reviews
Delta
7.8
Good
8,494 reviews

Overall

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Cancún from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Cancún, you will be flying into Cancun. Cancun (CUN) is just 8.9 mi from the center of the city. Cancun is the only Cancún airport and it handles 2 inbound flights from Washington, D.C. Dulles Intl per day. 6 airlines have flights to Cancun from Washington, D.C. Dulles Intl on a regular basis.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Cancún?

    A quick flight from Washington, D.C. Dulles Intl Airport to Cancún can take about 5h 32m. United Airlines provides one of the quickest options available for as low as $359. Airlines will cover a distance of 1357 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Cancún round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Cancún is Aeromexico. Our recent data shows that you can find tickets from as low as $171 on this airline. Additional options worth looking into are Delta and Air Canada, starting at $178 and $194 round-trip. Users have found that Aeromexico is 69% cheaper than the other options available to this destination.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Cancún?

    On average you can expect to pay $631 for a flight from Washington, D.C. Dulles Intl Airport to Cancún. The cheapest flight overall is $160 while the most popular route, (Washington, D.C. Dulles Intl - Cancun) is currently priced at $354.

  • Can I find deals for flights from Dulles Intl to Cancún that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Cancún flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Cancún?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Cancún.

  • Can I find deals for business class flights from Dulles Intl to Cancún?

    Yes. Cheapflights offers flight deals from Dulles Intl to Cancún by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Cancún?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cancún (average of $471). Flying from Washington, D.C. Dulles Intl Airport to Cancún in December is currently the most expensive (average of $613). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
Puerto Aventuras
Punta Sam
Holbox

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Alternative routes for Dulles Intl to Cancún

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to Cancún flights
Reagan-National to Cancún flights
Dulles Intl to Cozumel flights
Baltimore to Cozumel flights
Baltimore to Chetumal flights

Top 6 airlines flying from Dulles Intl to Cancún

Discover the top 6 airlines that operate flights from Dulles Intl to Cancún. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
AeromexicoCheapest$171Average$351FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$178Average$424FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$194Average$383FlexibilityNo cancel feeOn-time67%
FrontierCheapest$197Average$416FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$335Average$592FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$344Average$587FlexibilityNo cancel feeOn-time69%

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