Washington to Buenos Aires DCA, IAD → EZE
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Ministro Pistarini Airport (EZE)
The cheapest return found recently is $1,126 with United Airlines, 20 Nov – 29 Nov, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $1,033 to $1,222.
Cheapest return found recently
$1,126
20 Nov – 29 Nov · United Airlines
Ronald Reagan National Airport (DCA) → Ministro Pistarini Airport (EZE)
Leaves 7:36 p.m. · Return leaves 8:56 p.m. · 98 h 35 min of travel, both ways together
out 1 stop, back 3 stops
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,126 20 Nov – 29 Novfound yesterdaySee prices for these dates
$940 19 Nov – 29 Novfound 6 days agoSee prices for these dates
What have prices looked like?
Over 19 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $463 to $1,461.
19 days is a short history, so treat this range as an early guide.
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 3 departure dates from 19 Nov to 30 Dec, 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 9-night return fares leaving within 3 days of 20 Nov to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 19 Nov – 29 Nov | $940 | United Airlines | Ronald Reagan National Airport (DCA) → Ministro Pistarini Airport (EZE) | out 1 stop, back 4 stops | found 6 days ago | See prices for these dates |
| 20 Nov – 29 Nov | $1,126 | United Airlines | Ronald Reagan National Airport (DCA) → Ministro Pistarini Airport (EZE) | out 1 stop, back 3 stops | found yesterday | See prices for these dates |
| 30 Dec – 10 Jan 2027 | $1,318 | American Airlines | Washington Dulles International Airport (IAD) → Ministro Pistarini Airport (EZE) | out 1 stop, back 2 stops | found 5 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $940.
Airlines on the cheapest dates: United Airlines, American Airlines.
Premium cabin fares from Washington to Buenos Aires
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 20 Nov – 29 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to Buenos Aires?
Return
Not enough history yet: in 19 days of return prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → Buenos Aires
57 km from Washington
$1,868
$742 more than flying from Washington
16 Dec – 2 Jan 2027 · BWI → AEP · out 3 stops, back 3 stops
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 20 Nov – 29 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
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