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Flights from Washington D.C. to Buenos Aires

What to know about flights from Washington D.C. to Buenos Aires?

The distance between Washington D.C. and Buenos Aires is approximately 8,390.77 km. Based on Trip.com's data, travel demand peaks in July.

Cheapest one-way
$298
Delta Air Lines Delta Air Lines WAS-BUE 14h 38m · 1 stop Sat, Sep 12
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Cheapest round-trip
$685
Delta Air Lines Delta Air Lines WAS-BUE 19h 5m · 2 stops Wed, Sep 16 - Sun, Sep 20
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Recommended airlines
Delta Air Lines Delta Air Lines Cheapest · From $298 Copa Airlines Copa Airlines Most booked
When to travel
November
Cheapest
July
Peak season for travel
Route details
8,390.77 km
Flight distance

Explore the cheapest one-way and round-trip flights from Washington D.C. to Buenos Aires over the next 90 days, with one-way fares from $298 and round-trip from $685. Based on Trip.com's latest 7-day flight data.

      • DCA 1:35 PM
        19h 5m
        1 stop
        EZE 9:40 AM
        Washington D.C. - Buenos Aires | Wed, Sep 16 | Delta Air Lines
        EZE 9:00 PM
        26h 13m
        1 stop
        DCA 10:13 PM
        Buenos Aires - Washington D.C. | Sun, Sep 20 | United Airlines
        $685 $974
        30% off
        30% off
        $974 $685
      • DCA 12:57 PM
        18h 3m
        1 stop
        EZE 8:00 AM
        Washington D.C. - Buenos Aires | Wed, Sep 16 | United Airlines
        EZE 9:00 PM
        26h 13m
        1 stop
        DCA 10:13 PM
        Buenos Aires - Washington D.C. | Sun, Sep 20 | United Airlines
        $688 $974
        28% off
        28% off
        $974 $688
      • IAD 4:34 PM
        28h 52m
        1 stop
        EZE 10:26 PM
        Washington D.C. - Buenos Aires | Wed, Sep 16 | Copa Airlines
        EZE 9:00 PM
        26h 13m
        1 stop
        DCA 10:13 PM
        Buenos Aires - Washington D.C. | Sun, Sep 20 | United Airlines
        $695 $974
        28% off
        28% off
        $974 $695
      • IAD 2:25 AM
        21h 26m
        1 stop
        EZE 12:51 AM
        Washington D.C. - Buenos Aires | Thu, Sep 17 | Copa Airlines
        AEP 7:00 AM
        23h 20m
        1 stop
        IAD 5:20 AM
        Buenos Aires - Washington D.C. | Tue, Sep 22 | avianca
        $699
        28% off
        $974 $699
      • DCA 2:00 PM
        18h 45m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Wed, Sep 16 | LATAM Airlines
        EZE 9:00 PM
        27h 55m
        1 stop
        IAD 11:55 PM
        Buenos Aires - Washington D.C. | Sun, Sep 20 | United Airlines
        $701
        28% off
        $974 $701
      • DCA 1:35 PM
        19h 5m
        1 stop
        EZE 9:40 AM
        Washington D.C. - Buenos Aires | Thu, Sep 17 | Delta Air Lines
        EZE 1:35 AM
        13h 40m
        1 stop
        IAD 2:15 PM
        Buenos Aires - Washington D.C. | Tue, Sep 22 | avianca
        $701
        28% off
        $974 $701
      • DCA 1:35 PM
        19h 5m
        1 stop
        EZE 9:40 AM
        Washington D.C. - Buenos Aires | Thu, Sep 17 | LATAM Airlines
        EZE 1:35 AM
        13h 40m
        1 stop
        IAD 2:15 PM
        Buenos Aires - Washington D.C. | Tue, Sep 22 | avianca
        $705
        28% off
        $974 $705
      • IAD 7:36 PM
        13h 9m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Sun, Sep 27 | Delta Air Lines
        EZE 4:50 PM
        13h 30m
        1 stop
        IAD 5:20 AM
        Buenos Aires - Washington D.C. | Wed, Sep 30 | avianca
        $706
        28% off
        $974 $706
      • IAD 2:25 AM
        23h 5m
        1 stop
        EZE 2:30 AM
        Washington D.C. - Buenos Aires | Fri, Sep 18 | Copa Airlines
        EZE 4:50 PM
        13h 30m
        1 stop
        IAD 5:20 AM
        Buenos Aires - Washington D.C. | Tue, Sep 22 | avianca
        $708
        27% off
        $974 $708
      • DCA 1:35 PM
        19h 5m
        1 stop
        EZE 9:40 AM
        Washington D.C. - Buenos Aires | Fri, Sep 18 | Delta Air Lines
        EZE 4:50 PM
        22h 25m
        1 stop
        IAD 2:15 PM
        Buenos Aires - Washington D.C. | Tue, Sep 22 | avianca
        $711
        27% off
        $974 $711
      • WAS 1:00 PM
        17h 25m
        1 stop
        BUE 2:00 PM
        Washington D.C. - Buenos Aires | Tue, Sep 8 | Normal Airline
        BUE 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Buenos Aires - Washington D.C. | Thu, Sep 10 | Normal Airline
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      • IAD 6:07 PM
        14h 38m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Sat, Sep 12 | Delta Air Lines
        $298 $437
        32% off
        32% off
        $437 $298
      • IAD 7:17 PM
        13h 28m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Mon, Sep 28 | Delta Air Lines
        $309 $437
        28% off
        28% off
        $437 $309
      • IAD 7:17 PM
        13h 28m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Mon, Sep 21 | Delta Air Lines
        $309 $437
        28% off
        28% off
        $437 $309
      • IAD 6:00 AM
        26h 45m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Sun, Sep 20 | Delta Air Lines
        $310
        28% off
        $437 $310
      • DCA 2:00 PM
        18h 40m
        1 stop
        EZE 9:40 AM
        Washington D.C. - Buenos Aires | Mon, Sep 7 | Delta Air Lines
        $313
        28% off
        $437 $313
      • IAD 6:00 AM
        26h 45m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Thu, Sep 17 | Delta Air Lines
        $317
        27% off
        $437 $317
      • DCA 10:14 AM
        22h 31m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Sat, Sep 12 | LATAM Airlines
        $317
        27% off
        $437 $317
      • DCA 5:24 PM
        14h 21m
        1 stop
        EZE 8:45 AM
        Washington D.C. - Buenos Aires | Tue, Sep 8 | American Airlines
        $319
        27% off
        $437 $319
      • IAD 3:15 PM
        17h 30m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Fri, Sep 18 | LATAM Airlines
        $319
        27% off
        $437 $319
      • IAD 10:15 AM
        22h 30m
        1 stop
        EZE 9:45 AM
        Washington D.C. - Buenos Aires | Thu, Sep 17 | LATAM Airlines
        $319
        27% off
        $437 $319
      • WAS 1:00 PM
        17h 25m
        1 stop
        BUE 2:00 PM
        Washington D.C. - Buenos Aires | Tue, Sep 8 | Normal Airline
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Which airlines are the most popular for Washington D.C. to Buenos Aires flights?

You can choose from 2 airlines that fly from Washington D.C. to Buenos Aires, including Copa Airlines, Delta Air Lines, Delta Air Lines has lowest fares on this route.
Copa Airlines logo Copa Airlines
Delta Air Lines logo Delta Air Lines
Airlines are determined based on actual purchased flight tickets from Washington D.C. to Buenos Aires according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Washington D.C. to Buenos Aires (WAS-BUE)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as $298 on Cheapest nonstop routes (e.g. IAD to EZE on Sat, Sep 12), while Delta Air Lines offers Cheapest nonstop round-trips from $685 departing on Wed, Sep 16 and returning on Sun, Sep 20.
  • At the moment, several airlines serve connecting flights from Washington D.C. to Buenos Aires, including: Copa Airlines LATAM Airlines Delta Air Lines 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.
  • To find best deals on flights from Washington D.C. to Buenos Aires, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Sep 12, with one-way flights priced at just $298.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Buenos Aires travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • 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 September flight calendar, it's currently cheapest to fly from Washington D.C. to Buenos Aires on September 20, 2026 with United Airlines, with prices starting at $313.
  • You can arrive at any of the following airports in Buenos Aires: Ezeiza International Airport (EZE), and Jorge Newbery Airport (AEP). Flights from Ronald Reagan Washington National Airport to Ezeiza International Airport (DCA-EZE) are by far the most popular option for this route.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Washington D.C. to Buenos Aires is $715. Fares vary by travel date, airline and availability.
  • Enter Washington D.C. and Buenos Aires, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.