IAD - CUN

$160 Find Cheap Flights from Washington Dulles Airport to Cancun - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Cancún departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$338
Typical prices: $377-$592
Delta
Sun 9/6Wed 9/9
IAD - CUN • 1 stop
Cheapest non-stop
$356
Typical prices: $401-$604
United Airlines
Tue 9/15Sat 9/19
IAD - CUN • Non-stop
Top airlines
Cheapest • from $338 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 3h 40m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $338 (round-trip)
Shortest trip • 5h 55m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Dulles Intl to Cancún (IAD-CUN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Cancún that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Cancún

Sun, Sep 6 - Wed, Sep 9
Delta Logo
8:28 am - 2:22 pm
IAD
-
CUN
6h 54m
1 stop
Delta Logo
6:04 am - 3:19 pm
CUN
-
IAD
8h 15m
1 stop
$338Delta
Sun, Aug 23 - Fri, Aug 28
Delta Logo
6:00 am - 12:56 pm
IAD
-
CUN
7h 56m
1 stop
Delta Logo
6:05 am - 3:19 pm
CUN
-
IAD
8h 14m
1 stop
$339Delta
Sat, Jan 9 - Tue, Jan 12
Delta Logo
10:05 am - 4:30 pm
IAD
-
CUN
6h 25m
1 stop
Delta Logo
5:40 pm - 12:20 am
CUN
-
IAD
6h 40m
1 stop
$340Delta
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
7:57 am - 2:33 pm
IAD
-
CUN
7h 36m
1 stop
American Airlines Logo
2:07 pm - 9:57 am
CUN
-
IAD
18h 50m
2 stops
$342American Airlines
Fri, Aug 21 - Tue, Aug 25
American Airlines Logo
6:09 am - 8:03 pm
IAD
-
CUN
14h 54m
1 stop
American Airlines Logo
12:33 pm - 9:57 am
CUN
-
IAD
20h 24m
2 stops
$343American Airlines
Sun, Aug 23 - Fri, Aug 28
United Airlines Logo
12:35 pm - 3:12 pm
IAD
-
CUN
3h 37mnonstop
United Airlines Logo
3:38 pm - 12:44 am
CUN
-
IAD
8h 06m
1 stop
$344United Airlines
Sun, Dec 13 - Thu, Dec 24
American Airlines Logo
2:06 pm - 10:35 am
IAD
-
CUN
20h 29m
1 stop
American Airlines Logo
8:45 am - 5:05 pm
CUN
-
IAD
8h 20m
1 stop
$345American Airlines
Thu, Sep 10 - Mon, Sep 14
Delta Logo
8:00 am - 7:50 pm
IAD
-
CUN
12h 50m
1 stop
Delta Logo
11:16 am - 12:40 am
CUN
-
IAD
12h 24m
2 stops
$347Delta
Wed, Sep 9 - Mon, Sep 14
American Airlines Logo
6:14 am - 1:07 pm
IAD
-
CUN
7h 53m
2 stops
American Airlines Logo
12:33 pm - 9:55 am
CUN
-
IAD
20h 22m
2 stops
$348American Airlines
Sun, Nov 8 - Thu, Nov 12
Delta Logo
10:07 am - 9:15 pm
IAD
-
CUN
11h 08m
1 stop
Delta Logo
8:00 am - 2:41 pm
CUN
-
IAD
6h 41m
1 stop
$349Delta
Booking Insights

KAYAK's insights & trends for Dulles Intl to Cancún flights

Get data-powered insights and trends into flights from Dulles Intl to Cancún to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Cancún?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Cancún departing in September.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Cancun?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Cancún clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Cancun on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Washington Dulles Airport to Cancun. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Cancun?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Cancún, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Cancun is September, where tickets cost $481 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $626 and $610 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Cancun?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $549, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Cancun?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Cancún, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Cancun, you should book around 3 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Cancún

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Brandon Schultz

Brandon Schultz

Expert on CUN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low seasonSeptember
Cheapest flight$160
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Washington Dulles Airport to Cancun

When to book flights from Dulles Intl to Cancún

Are your dates flexible? Find out the best times to travel from Dulles Intl to Cancún based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Cancun flights

  • How to get from Cancun International Airport to Cancun city center?

    There are various options for reaching the city center from CUN. There are numerous taxi/cab services that you can utilize by making pre-arrangements. You can use the public ADO bus, which is the cheapest option. You can also use the various rental car services available at the airport. Renting cars is easy and convenient and you have a great variety of different vehicle and budget options.

  • Does Washington Dulles International Airport have accessibility services?

    Yes. The airport has reserved parking spaces that are accessible for low-mobility travelers, and you can request wheelchair assistance services through your airlines. The elevators have buttons with braille labels for independent navigation of low-vision travelers. Visual pagers for low-hearing travelers are strategically placed around the airport. The airport shuttle buses are well adapted and equipped with wheelchair lifts and ramps. All restrooms are wheelchair accessible and have well adapted with special features like modified sinks and toilet stalls.

  • What hotels are near Cancun International Airport?

    Some hotels near CUN include Courtyard by Marriott Cancun Airport, Hampton Inn by Hilton Cancun Cumbres, and Reflect Crystal Grand Cancun. They offer numerous amenities for guests including free shuttle services to the airport.

  • Is Washington Dulles International Airport pet-friendly?

    For travelers accompanied by pets or service animals, IAD has some designated pet/animal relief areas. Some locations of the pet relief areas include adjacent to gate A32, across gate D1, and outside the terminal on the departures level. There is also another relief area on the Arrivals Level, around Baggage Claim 1.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Cancun?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Cancun was $160 for a one-way ticket and $338 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Cancun?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Cancun.

  • Which airports will I be using when flying from Washington Dulles Airport to Cancun?

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Cancun is Cancun.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Cancun?

    JetBlue, and American Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to Cancun flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Cancun?

    The Boeing 737-900 is the aircraft model that flies most regularly on the Washington Dulles Airport to Cancun flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Cancun?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Cancun, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Washington Dulles Airport to Cancun?

    There are nonstop flights from Washington Dulles Airport to Cancun on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Cancun, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Cancun are Delta and United Airlines. With an average price for the route of $424 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $591 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Cancun?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Cancun.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Cancun?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cancun from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Cancun?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cancun with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and CUN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Cancun?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cancun from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Cancun

  • Looking for a cheap flight? 25% of our users found flights on this route for $183 or less one-way and $471 or less round-trip.
  • On average, about 3591 lbs. of carbon is emitted per passenger on flights from Washington Dulles Airport (IAD) to Cancun. For a more sustainable trip book a flight with United Airlines, it offers nonstop flights that emit 48% less carbon than the average amount for this route.
  • The Cancun International Airport (CUN) has four terminals 1, 2, 3, and 4. There is a free shuttle service between terminals that runs every 30 minutes to transfer those passengers that must go from one terminal to another and other parts of the airport.
  • You can enjoy the VIP Lounges at CUN which provide unlimited Internet, TVs, open bars, and massage chairs. In addition to shops, CUN also offers its passengers a great range of services including banks and ATMs, convenience stores, beauty parlors, a video arcade, information booths, and a business center that caters to corporate travelers.
  • Washington Dulles International Airport (IAD) has a play area near gate B70 that is equipped with slides and other games to keep your children entertained. There are comfortable nursing rooms available throughout the airport ideal for mothers traveling with children, that are packed with amenities, located at pre-security and post-security near gates A20, B70, C11, and D1.
  • IAD has a variety of dining options for travelers looking to grab a bite before their flight. There is an array of bistros, cafes, grills, and pizzerias located post-security on concourses A, B, C, and D that serve snacks, meals, drinks, and beverages.

Prefer to fly direct from Washington Dulles Airport to Cancun?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Cancun.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Cancun Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Cancun

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Cancun to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Dulles Intl to Cancún

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Cancun. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Cancún? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8463 reviews
7.8Entertainment
7.8Comfort
8.5Crew
8.1Boarding
7.2Food
Airline reviews

The gentleman at the gate I think his name is RIE was exceptional

10.0 ExcellentGireesh, Apr 2026
DCA - DTW
Read more Delta reviews

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Free Wi-Fi is good. That’s all - food mediocre, unfriendly crew, poor communication after trying to file a claim for my lost bag, which Delta didn’t even know was lost until I told them.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

Keep us informed of delays in a more timely manner

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

Caroline (Supervisor) was great! Salute to the employees like her!

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

No seat back entertainment. And app had a hard time getting entertainment loaded.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

Staff was rude. Didn’t give water for 2 hours. Worst service

We took off an hour late due to arrival airport not having enough gates. That was followed by 1:30 wait to get our bags delivered for the entire flight.

It’s a service to take you from one point to another. No frills. You want it, you take it. It’s upon you to bring food, reading material, games to play, movies to watch, etc. The wifi onboard never works - so you cannot even listen to any podcasts, music, or get updated news feeds. The toilet is a mess, and a four flight does not need any hygienic interventions when people either splatter their pee all over the seats or on the floor. It’s a monopolized service and so smile and bear it.

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

Both ground crew and flight crew were rude, and did not provide any level of service. They made it very difficult as we were traveling with a passenger the required assistance.

From the check-in, to the flight, and arriving, everything went very smoothly. Unfortunately, when I received my baggage it was severely damaged. I have a hard shelled suitcase and it was completely smashed it. I’m not sure how this could happened but I am extremely disappointed that my belongings were damaged beyond repair and continued use.

Lousy No wheelchair. As normal at Atlanta Cheap airline Cheap aero plane. - Neither entertainment nor food on a 5 hour saga

The plane was so outdated, that it made it uncomfortable. The temperature was hot during the whole flight

Some entertainment and food/snack service would have been nice

All the pessengers should be wait in a line útil the creo and piloto are arrived.

Planes seat could be bigger very uncomfortable for tall humans.

1 hour waiting for suitcases to come out traveling in business class and food in business class is a sandwich? Avoid Aeromexico .

Newer plane with large seats. No meal, but snacks were plentiful. Inflight entertainment was good but movies were dated.

No space reserved for anyone who didn’t have underseat in front of them. Made it inconvenient to get the backs secured. No inflight entertainment in the 190. Bring your own! Food was excellent and we were surprised to get a full breakfast.

Broke my luggage and I can't get a resolution yet.

There were no TV screens - even in Business class. 5 delays, and only given $12 meal voucher! Terrible!

Flight was delayed again and again ultimately almost three hours getting us to our location at close to midnight by the time we got in and out of airport to destination. I had taken time off work to enjoy an evening at destination and that was now wasted

No food/snack served during the flight. Crew wasn’t interested at all. Flew American First but flying low cost with Ryanair is even better

The flight was good. The only reason I did not say “excellent” was the delay

They could have done a better job announcing the boarding groups and asked for more drinks (water) if needed.

Ac was broken so we deplaned, waited 2 hours, taxiing for takeoff they said the plane would not fly so we went back to the gate and got a new plane which took another hour. In all a 4 hour delay for an 80 min flight.

We were delayed bc ground crew gave the flight crew the wrong paperwork. We taxiied to the runway then back to the gate to get the correct paperwork that no one bothered reviewing the first time we pushed back. Boarding was rude and stressful like it always is. Gate agents and flight attendants are all over 55 years of age, embittered by years of underpayment From AA leading to their passive agressive bitchiness for no reason.

Boarding time was easy & quick. Crew was excellent. In-flight entertainment was great/easy. Seats are too small and not enough room between rows: felt like a sardine/very cramped.

Ground crew forced me to double pay for infant international charges, when I complained about this and told them, with proof, I already paid they threaten to not allow me on the plane because I was “being rude”. Horrible ground management, horrible airline.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

I missed a flight because of a delay. I had to buy a new ticket through Southwest.

Bag should not be so much money. This is how Frontier takes advantage of customers

Frontier is definitely a good option for people traveling light or on a budget - just remember to bring your own entertainment and your own headphones if you need them.

I don’t know. I’m in the airport Later y will try to have my ticket

Never offer anything to drink ☹️ Flight delayed gate moved poor communication

It’s a cheap airline. I wish they had better seats.

Seats are cramped and very uncomfortable. You have to pay for everything and it is too expensive.

Got ripped off by chatdeal. For 318 would like my money back. Neal. Did not take flight

Everything you need to know for your flight from Dulles Intl to Cancún

Information on your arrival and departure airports