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Find cheap one-way flights from Washington D.C. to Buenos Aires starting at US$289.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Washington D.C. to Buenos Aires?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Washington D.C. to Buenos Aires

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Avianca
From US$289
Copa Airlines
From US$343
Southwest Airlines
From US$348
United Airlines
From US$366
Delta Air Lines
From US$375
Allegiant Air
From US$420
LATAM Airlines
From US$424
Jetblue Airways
From US$438
American Airlines
From US$440
Aerolineas Argentinas
From US$471
ANA airlines

Find more flights and airlines

Find cheap flights from Washington D.C. to Buenos Aires by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Washington D.C. to Buenos Aires.

  • Cheapest
    Avianca
    IAD
    07:45
    15h 20m
    1 transfer
    EZE
    00:05
    Dulles International Airport - Ministro Pistarini International Airport
    Tue, May 14Avianca
    US$289
  • Avianca
    IAD
    07:45
    29h 35m
    2 transfer
    AEP
    14:20
    Dulles International Airport - Jorge Newbery Airport
    Wed, Apr 3Avianca
    US$302
  • Southwest Airlines
    DCA
    06:55
    23h 45m
    2 transfer
    EZE
    07:40
    Ronald Reagan Washington National Airport - Ministro Pistarini International Airport
    Mon, Apr 29Southwest Airlines
    US$348
  • Southwest Airlines
    DCA
    06:55
    23h 45m
    2 transfer
    EZE
    07:40
    Ronald Reagan Washington National Airport - Ministro Pistarini International Airport
    Mon, Apr 29Southwest Airlines
    US$348
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Washington D.C. (WAS) to Buenos Aires (BUE) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Buenos Aires based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Washington D.C. (WAS) to Buenos Aires (BUE) cost?

    According to Trip.com's data, the lowest price is around $1,244.
  • What is the transportation method from the main airport to downtown in Buenos Aires?

    • The distance from Ministro Pistarini International Airport to downtown is about 27km. It takes about 40 minutes by taxi.
    • The distance from Jorge Newbery Airport to downtown is about 5km. It takes about 20 minutes by taxi.

Washington D.C. to Buenos Aires Flight Information

Cheapest nonstop flight price

$288

Off-season for travel

December

Peak season for travel

October