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Cheap flights Washington — Buenos Aires

Washington (WAS, US) Buenos Aires (BUE, AR)
from $308 8 396 km ~10h 23m 4 flights found 3 airlines cheapest on Thursday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $308 on 03.12.2026
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
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Th
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Su
December 2026
Mo
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January 2027
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Tu
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Prices found for 5 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
03 Dec 2026, Thu
United Airlines UA 2190
18:54
DCA Ronald Reagan National Airport
08:22
EZE Ministro Pistarini Airport
13h 28m 1 stop
Farera
$308
View this ticket
02 Jan 2027, Sat
American Airlines AA 3106
01:57
DCA Ronald Reagan National Airport
13:42
EZE Ministro Pistarini Airport
11h 45m 1 stop
Trip.com
$325
View this ticket
05 Dec 2026, Sat
American Airlines AA 768
21:36
DCA Ronald Reagan National Airport
09:33
EZE Ministro Pistarini Airport
11h 57m 1 stop
Ubfly
$333
View this ticket
20 Nov 2026, Fri
avianca airlines AV 149
13:50
IAD Washington Dulles International Airport
01:50
EZE Ministro Pistarini Airport
12h 1 stop
Farera
$539
View this ticket
Route characteristics
Distance
8 396 km
Flight time
10h 23m
Time difference
+2h
Minimum price
from $308 (03.12.2026)
Average price
$366
Maximum price
$539
Cheapest day
Thursday
Departure airports (2)
DCA Ronald Reagan National Airport IAD Washington Dulles International Airport
Arrival airports (1)
EZE Ministro Pistarini Airport
Airlines (3)
UA United Airlines AA American Airlines AV avianca airlines
Agencies (3)
Farera Trip.com Ubfly
Prices by day of week
Thursday
$308
avg $308
Cheapest
Friday
$539
avg $539
Saturday
$325
avg $329
Price trend by month
November 2026
from $539
avg $539
1 flights
December 2026
from $308
avg $321
2 flights
January 2027
from $325
avg $325
1 flights
Airlines — cheapest prices 3
United Airlines
United Airlines
1 flights · 1 days
$308
American Airlines
American Airlines
2 flights · 2 days
$325
avianca airlines
avianca airlines
1 flights · 1 days
$539
Where to buy tickets 3
Farera
2 tickets · 2 days
from $308
Trip.com
1 tickets · 1 days
from $325
Ubfly
1 tickets · 1 days
from $333
Airports

From — Washington (2)

  • DCA Ronald Reagan National Airport
  • IAD Washington Dulles International Airport

To — Buenos Aires (1)

  • EZE Ministro Pistarini Airport
Other destinations from Washington
Nashville
US
Dallas
US · Hub
Los Angeles
US · Hub
Miami
US · Hub
Raleigh
US
St Louis
US
Cincinnati
US
Seattle
US
Boston
US
Atlanta
US · Hub
San Juan
PR
Tampa
US
Frequently asked questions about the route Washington — Buenos Aires
How long is the flight from Washington to Buenos Aires?
Approximate flight time — 10h 23m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from Washington to Buenos Aires?
The straight-line distance — 8 396 km.
How much do flights from Washington to Buenos Aires cost?
The minimum price over 3 months — from $308 on 03.12.2026.
What is the average ticket price?
The average price — $366. Range: $308 — $539.
What is the time difference between Washington and Buenos Aires?
The difference — +2h.
From which airports does Washington operate flights?
From Washington: DCA (Ronald Reagan National Airport), IAD (Washington Dulles International Airport).
To which airports in Buenos Aires do flights arrive?
To Buenos Aires: EZE (Ministro Pistarini Airport).
Which airlines fly this route?
This route is served by 3 airlines: United Airlines, American Airlines, avianca airlines.
Which day of the week is cheapest?
The cheapest day of the week — Thursday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route Washington — Buenos Aires

Flights Washington — Buenos Aires is a popular route. The straight-line distance is 8 396 km. Flight time 10h 23m. Time difference +2h.

From Washington (WAS) flights depart from 2 airports: DCA, IAD. To Buenos Aires (BUE) — 1 arrival airport: EZE.

3 airlines operate on this route: United Airlines, American Airlines, avianca airlines.

The minimum price for the next 3 months — from $308 (03.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $366, ranging from $308 to $539. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Thursday.

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