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Flights from Washington D.C. to Buenos Aires

Find cheap airlines flights from Washington D.C. to Buenos Aires

Choose from 3 carriers that fly from Washington D.C. to Buenos Aires, including Delta Air Lines, LATAM Airlines, and avianca. Enjoy the cheapest tickets on this route with Delta Air Lines.
Delta Air Lines logo Delta Air Lines LATAM Airlines logo LATAM Airlines avianca logo avianca

Find flight deals from Washington D.C. to Buenos Aires for the next 3 months. Book one way flights from $248 or round trip flights from $619.

      • DCA 11:00 AM
        18h 20m
        1 stop
        EZE 7:20 AM
        Washington D.C. - Buenos Aires | Wed, Dec 3 | United Airlines
        EZE 11:55 PM
        24h 9m
        1 stop
        DCA 10:04 PM
        Buenos Aires - Washington D.C. | Wed, Dec 10 | United Airlines
        $619 $817
        24% OFF
        24% OFF
        $817 $619
      • IAD 3:38 PM
        15h 22m
        1 stop
        EZE 9:00 AM
        Washington D.C. - Buenos Aires | Wed, Dec 3 | Delta Air Lines
        EZE 10:25 PM
        19h 57m
        1 stop
        DCA 4:22 PM
        Buenos Aires - Washington D.C. | Wed, Dec 10 | Delta Air Lines
        $619 $817
        24% OFF
        24% OFF
        $817 $619
      • IAD 5:59 PM
        13h 1m
        1 stop
        EZE 9:00 AM
        Washington D.C. - Buenos Aires | Mon, Dec 1 | Delta Air Lines
        EZE 10:25 PM
        15h 14m
        1 stop
        IAD 11:39 AM
        Buenos Aires - Washington D.C. | Sun, Dec 7 | Delta Air Lines
        $633 $817
        22% OFF
        22% OFF
        $817 $633
      • IAD 5:59 PM
        13h 1m
        1 stop
        EZE 9:00 AM
        Washington D.C. - Buenos Aires | Mon, Dec 8 | Delta Air Lines
        EZE 8:55 PM
        14h 16m
        1 stop
        IAD 9:11 AM
        Buenos Aires - Washington D.C. | Sun, Dec 14 | Delta Air Lines
        $633
        22% OFF
        $817 $633
      • IAD 5:45 AM
        22h 5m
        1 stop
        EZE 5:50 AM
        Washington D.C. - Buenos Aires | Mon, Dec 1 | avianca
        EZE 4:55 PM
        13h 30m
        1 stop
        IAD 4:25 AM
        Buenos Aires - Washington D.C. | Sun, Dec 7 | avianca
        $641
        22% OFF
        $817 $641
      • IAD 3:31 AM
        17h
        1 stop
        EZE 10:31 PM
        Washington D.C. - Buenos Aires | Mon, Dec 1 | Copa Airlines
        EZE 3:41 AM
        21h 52m
        1 stop
        IAD 11:33 PM
        Buenos Aires - Washington D.C. | Sun, Dec 7 | Copa Airlines
        $646
        21% OFF
        $817 $646
      • IAD 1:13 AM
        21h 45m
        1 stop
        EZE 12:58 AM
        Washington D.C. - Buenos Aires | Mon, Dec 8 | Copa Airlines
        EZE 2:32 PM
        14h 50m
        1 stop
        IAD 3:22 AM
        Buenos Aires - Washington D.C. | Sun, Dec 14 | Copa Airlines
        $646
        21% OFF
        $817 $646
      • IAD 5:45 AM
        22h 5m
        1 stop
        EZE 5:50 AM
        Washington D.C. - Buenos Aires | Wed, Dec 3 | avianca
        EZE 1:40 AM
        13h 35m
        1 stop
        IAD 1:15 PM
        Buenos Aires - Washington D.C. | Wed, Dec 10 | avianca
        $649
        21% OFF
        $817 $649
      • IAD 1:13 AM
        21h 45m
        1 stop
        EZE 12:58 AM
        Washington D.C. - Buenos Aires | Wed, Dec 3 | Copa Airlines
        EZE 9:03 AM
        20h 19m
        1 stop
        IAD 3:22 AM
        Buenos Aires - Washington D.C. | Wed, Dec 10 | Copa Airlines
        $658
        19% OFF
        $817 $658
      • DCA 2:30 PM
        17h 5m
        1 stop
        EZE 9:35 AM
        Washington D.C. - Buenos Aires | Wed, Dec 3 | LATAM Airlines
        EZE 11:00 AM
        29h 1m
        1 stop
        DCA 2:01 PM
        Buenos Aires - Washington D.C. | Wed, Dec 10 | LATAM Airlines
        $670
        18% OFF
        $817 $670
      • WAS 1:00 PM
        17h 25m
        1 stop
        BUE Invalid Date
        Washington D.C. - Buenos Aires | Wed, Nov 19 | Normal Airline
        BUE 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Buenos Aires - Washington D.C. | Fri, Nov 21 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Washington D.C. to Buenos Aires

The distance between Washington D.C. and Buenos Aires is about 8,390.77 km. The most popular month to Buenos Aires is July. The off-season for travel is November.

Cheapest one-way flight price$248
Cheapest round-trip ticket price$619
Off-season for travelNovember
Peak season for travelJuly
Flight distance8,390.77 km
Popular airlineDelta Air Lines

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

The cheapest time for Washington D.C. to Buenos Aires flights: Nov 30 to Dec 7 — one way flight prices from $245.

Cheapest flights
From price
Search
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer flights from Washington D.C. to Buenos Aires?

    At the moment, several airlines serve connecting flights from Washington D.C. to Buenos Aires, including: Delta Air Lines LATAM Airlines avianca Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Buenos Aires is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • The cheapest months to fly from Washington D.C. to Buenos Aires is November, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Washington D.C. to Buenos Aires on November 18, 2025 with avianca, with prices starting at $258.
  • You can land at any one of the following hubs in Buenos Aires, with Dulles International Airport to Ministro Pistarini International Airport (IAD-EZE) is by far the most common option on this route: Ministro Pistarini International Airport (EZE) Jorge Newbery Airport (AEP).
  • The time difference between Buenos Aires and Washington D.C. is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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