Cheap flights from Washington, D.C. to Buenos Aires from $259
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Buenos Aires departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Copa Airlines flights from Washington, D.C. to Buenos Aires
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How to get the cheapest flight ticket from Washington, D.C. to Buenos Aires
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Buenos Aires?
What is the cheapest month to fly to Buenos Aires?
The cheapest month to fly to Buenos Aires from Washington, D.C. is in May. Flight prices, which tend to average around $821, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from Washington, D.C. during September instead. Flights to Buenos Aires in September, while not as cheap as those in May, still average around $832.
What is the cheapest day to depart on your flight to Buenos Aires?
On average, the least expensive day to fly to Buenos Aires from Washington, D.C. is on a Monday. momondo users have found tickets for Monday departures for as low as $1,031. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,094.
What is the cheapest time of day to depart on your flight to Buenos Aires?
Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Washington, D.C. to Buenos Aires during this time can be as low as $969. Try not to purchase tickets at noon because they tend to be around $1,107. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Buenos Aires?
You are more likely to see cheaper flights to Buenos Aires from Washington, D.C. when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,081 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Washington, D.C. for as low as $775 on momondo.
Can stopping save me money on Washington, D.C. to Buenos Aires flights?
You could potentially save up to 11% on your flight if you consider stops on a Washington, D.C. to Buenos Aires flight.
How have Washington, D.C. to Buenos Aires flight prices changed over time?
As of June 2025, prices for Washington, D.C. to Buenos Aires flights are approximately 52% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Buenos Aires?
Avianca, LATAM Airlines, and Delta are the most popular carriers operating from Washington, D.C. to Buenos Aires
What airlines fly to Buenos Aires?
Delta, Copa Airlines and Avianca are the top three most popular airlines that fly to Buenos Aires from Washington, D.C. according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 6 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.
When to book flights from Washington, D.C. to Buenos Aires
Cheap Washington, D.C. to Buenos Aires (WAS to BUE) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Buenos Aires
How far is Washington, D.C. to Buenos Aires by plane?
Buenos Aires is 5214.3 mi away from Washington, D.C.. 13h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to Buenos Aires?
Prices for flights from Washington, D.C. to Buenos Aires are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Buenos Aires?
There are 6 operators available for flights from Washington, D.C. to Buenos Aires as of June 2025.
How old do you have to be to fly from Washington, D.C. to Buenos Aires?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Buenos Aires?
Based on momondo bookings for flights between Washington, D.C. and Buenos Aires, the leading airline is Delta, making up 22% of the total bookings. Other popular airlines include Avianca with 22%, Copa Airlines with 21%, and American Airlines with 20%.
Best airlines flying from Washington, D.C. to Buenos Aires
Compare and see reviews for airlines that fly from Washington, D.C. to Buenos Aires with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $549 | Free Cancellation | Rating 7.5 1,451 reviews | |||
| PriceFrom $605 | Free Cancellation | Rating 6.7 2,345 reviews | |||
| PriceFrom $629 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $629 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $629 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $687 | Free Cancellation | Rating 7.5 1,785 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Buenos Aires?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Buenos Aires. momondo saves you time and could save you money on your trip.
Can I find flights from Washington, D.C. to Buenos Aires with flexible booking policies on momondo?
All flight searches from Washington, D.C. to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Washington, D.C. to Buenos Aires?
momondo provides multiple filters to help you find the best flight to Buenos Aires from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to Buenos Aires right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from Washington, D.C. and alert you when they change.