At IAD, security queues can be long, especially in the afternoon. Plan extra time for check-in and security to avoid stress before your flight.

| Most accurate provider | eDreams 3 stars | 
|---|---|
| Most trusted provider | eDreams 3 stars | 
| Round-trip from | $245 (Cheapflightsfares) | 
| One-way from | $101 (Kiwi.com) | 
| Popular in | December | 
| Cheapest in | September | 
| Average price | $488 | 
| Good round-trip deal | $410 or less | 
| Good one-way deal | $204 or less | 
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Mon 4/27
7:00 am-12:03 pm
1 stop6h 03m
Cancun
Sat 5/2
9:45 am-10:34 pm
1 stop11h 49m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Tue 3/3
7:00 am-1:03 pm
1 stop6h 03m
Cancun
Sat 3/7
11:40 am-8:59 pm
1 stop9h 19m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Tue 12/2
6:10 am-1:16 pm
1 stop7h 06m
Cancun
Sat 12/6
2:40 pm-10:39 pm
1 stop7h 59m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Mon 11/17
6:30 am-1:16 pm
1 stop6h 46m
Cancun
Fri 11/21
10:24 am-5:30 pm
1 stop7h 06m
BaltimoreCancún
BWI - CUN
BWICUN
Baltimore/Washington
Sat 2/21
9:37 pm-9:10 am
1 stop11h 33m
Cancun
Sat 2/28
11:47 am-8:41 pm
1 stop8h 54m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Tue 1/13
7:10 am-1:03 pm
1 stop5h 53m
Cancun
Fri 1/23
2:22 pm-10:31 pm
1 stop8h 09m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Sat 2/21
9:00 am-3:55 pm
1 stop6h 55m
Cancun
Sat 2/28
3:50 pm-10:57 pm
1 stop7h 07m
Washington, D.C.Cancún
DCA - CUN
DCACUN
Washington, D.C. Reagan-National
Mon 11/24
6:15 am-6:58 pm
1 stop12h 43m
Cancun
Thu 12/4
2:40 pm-10:39 pm
1 stop7h 59m
BaltimoreCancún
BWI - CUN
BWICUN
Baltimore/Washington
Sat 1/17
9:37 pm-9:10 am
1 stop11h 33m
Cancun
Mon 1/26
10:36 am-2:01 pm
Nonstop3h 25m
BaltimoreCancún
BWI - CUN
BWICUN
Baltimore/Washington
Sat 1/17
9:37 pm-9:10 am
1 stop11h 33m
Cancun
Sat 1/24
10:36 am-2:01 pm
Nonstop3h 25m
| Provider | Price Accuracy | Trust Score* | 
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | 
The best time to book flights from Washington, D.C. to Cancún is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Cancún (average of $207). Flying from Washington, D.C. to Cancún in June is currently the most expensive (average of $263). 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.
When flying from Washington, D.C. to Cancún, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight in the afternoon.
Travelers seeking maximum savings on their Washington, D.C. to Cancún flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Atlanta (ATL) – chosen by Cheapflights users on 85% of 1-stop itineraries from Washington, D.C. to Cancún on Cheapflights.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $383.
Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 5h 51m.
Flights via Mexico City (MEX) offer the fastest connection on this route, with an average layover time of 1h 10m.
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Food
Overall
Entertainment
Boarding
Comfort
Crew
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time | 
|---|---|---|---|---|
| Cheapest$131 | Average$430 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$242 | Average$441 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$258 | Average$480 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$274 | Average$498 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$275 | Average$581 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$283 | Average$580 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$286 | Average$351 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$314 | Average$558 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$366 | Average$468 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$486 | Average$654 | FlexibilityNo cancel fee | On-time63% |