Cheap flights from Washington to Cancun from $397 DCA, IAD → CUN
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Cancun International Airport (CUN)
The cheapest return found recently is $397 with Frontier Airlines, 9 Dec – 14 Dec, found 2 days ago.
- Cheapest return found recently
- $397, 9 Dec to 14 Dec
- Usual return price
- $489 to $651
- Cheapest month to fly
- December 2026, return fares from $397 found in the last 7 days
- Airlines with nonstop flights
- United Airlines, Southwest Airlines
Return
The cheapest return fare on each of 7 departure dates is usually $489 to $651.
Cheapest return found recently
$397
9 Dec – 14 Dec · Frontier Airlines
Washington Dulles International Airport (IAD) → Cancun International Airport (CUN)
Leaves 10:35 p.m. · Return leaves 6:55 p.m. · 37 h 11 min of travel, both ways together
out 1 stop, back 1 stop · via Hartsfield-Jackson Atlanta International Airport (ATL), Montreal-Pierre Elliott Trudeau International Airport (YUL) · separate tickets likely: collect your bags and check in again · overnight connection · 19 h connection
found 2 days ago
Cheapest nonstop return
$733
9 Dec – 14 Dec · United Airlines
Washington Dulles International Airport (IAD) → Cancun International Airport (CUN)
Leaves 8:17 a.m. · Return leaves 8:19 p.m. · 7 h 17 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$397 9 Dec – 14 Decfound 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $343 to $484.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 7 departure dates from 9 Dec to 29 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 5-night return fares leaving within 3 days of 9 Dec to compare.
Every date we hold
186 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 9 Dec – 14 Dec | $397 | Frontier Airlines | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 25 Dec – 31 Dec | $493 | Frontier Airlines | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 26 Dec – 9 Jan 2027 | $484 | Frontier Airlines | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 29 Dec – 2 Jan 2027 | $756 | Frontier Airlines | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 2 stops, back nonstop | found 6 days ago | See prices for these dates |
| 24 Mar 2027 – 29 Mar 2027 | $581 | Volaris | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 18 Jul 2027 – 25 Jul 2027 | $651 | Aeromexico | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 29 Aug 2027 – 5 Sept 2027 | $651 | Aeromexico | Washington Dulles International Airport (IAD) → Cancun International Airport (CUN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $397.
Airlines on the cheapest dates: Frontier Airlines, Aeromexico, Volaris.
Premium cabin fares from Washington to Cancun
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 9 Dec – 14 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to Cancun?
Return
Fares 90 to 179 days before departure were typically 20% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $515 | $507 | +25% | 13 |
| 7–13 days | $504 | $426 | +22% | 12 |
| 14–29 days | $426 | $343 | +3% | 23 |
| 30–59 days | $415 | $357 | +1% | 49 |
| 60–89 days | $418 | $363 | +1% | 43 |
| 90–179 days | $413 | $365 | Cheapest seen | 30 |
| 180+ days | $596 | $527 | +44% | 22 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → Cancun
57 km from Washington
$440
$43 more than flying from Washington
9 Dec – 14 Dec · BWI → CUN · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 9 Dec – 14 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Washington to Cancun?
The cheapest return found recently is $397 with Frontier Airlines, 9 Dec to 14 Dec, found 2 days ago. The cheapest return fare on each of 7 departure dates is usually $489 to $651.
What is the cheapest month to fly from Washington to Cancun?
December 2026 is the cheapest month for a return, from $397, 9 Dec to 14 Dec, found 2 days ago.
How far ahead should I book a flight from Washington to Cancun?
In 49 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 20% lower than 0 to 6 days before departure.
Is there a direct flight from Washington to Cancun?
Yes, the cheapest nonstop return found recently is $733 with United Airlines, 9 Dec to 14 Dec, found 2 days ago.
Which airlines have the cheapest flights from Washington to Cancun?
Between 9 Dec and 29 Aug 2027, Frontier Airlines has the cheapest return on 4 of the 7 departure dates we hold, Aeromexico on 2 and Volaris on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work