WAS - ROS

$787 Find Cheap Flights from Washington, D.C. to Rosario

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Rosario departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Rosario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Rosario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Rosario, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$787
Copa Airlines
Fri 11/6Mon 11/9
DCA - ROS • 2 stops
Top airlines
Copa Airlines
Cheapest • from $787 (round-trip)
Copa Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Rosario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Rosario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Rosario (WAS-ROS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Rosario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Rosario

Fri, Nov 6 - Mon, Nov 9
Copa Airlines Logo
8:00 pm - 12:16 am
DCA
-
ROS
50h 16m
2 stops
Copa Airlines Logo
1:16 am - 6:23 pm
ROS
-
DCA
19h 07m
2 stops
$787Copa Airlines
Thu, Nov 5 - Tue, Nov 10
Multiple Airlines Logo
11:00 am - 11:10 am
DCA
-
ROS
46h 10m
2 stops
Multiple Airlines Logo
4:45 pm - 9:54 am
ROS
-
DCA
43h 09m
2 stops
$926Multiple Airlines
Sat, Aug 29 - Wed, Sep 2
LATAM Airlines Logo
6:00 am - 6:10 am
IAD
-
ROS
23h 10m
2 stops
LATAM Airlines Logo
7:40 am - 10:01 am
ROS
-
IAD
27h 21m
2 stops
$926LATAM Airlines
Sun, Aug 30 - Sat, Sep 12
Multiple Airlines Logo
7:45 pm - 6:10 am
DCA
-
ROS
33h 25m
2 stops
Multiple Airlines Logo
12:40 pm - 9:55 am
ROS
-
DCA
46h 15m
2 stops
$935Multiple Airlines
Fri, Nov 6 - Fri, Nov 13
LATAM Airlines Logo
2:55 pm - 6:05 am
DCA
-
ROS
37h 10m
2 stops
LATAM Airlines Logo
12:10 pm - 6:14 pm
ROS
-
DCA
32h 04m
2 stops
$940LATAM Airlines
Sun, Nov 1 - Sat, Nov 14
Multiple Airlines Logo
9:00 am - 3:25 pm
DCA
-
ROS
52h 25m
2 stops
Multiple Airlines Logo
12:10 pm - 9:12 am
ROS
-
DCA
23h 02m
2 stops
$947Multiple Airlines
Sun, Nov 8 - Sat, Nov 21
LATAM Airlines Logo
6:25 pm - 3:25 pm
DCA
-
ROS
43h 00m
2 stops
LATAM Airlines Logo
12:10 pm - 6:05 pm
ROS
-
DCA
31h 55m
2 stops
$953LATAM Airlines
Sun, Nov 8 - Sat, Nov 21
LATAM Airlines Logo
7:50 pm - 3:25 pm
IAD
-
ROS
41h 35m
2 stops
LATAM Airlines Logo
12:10 pm - 11:52 am
ROS
-
IAD
25h 42m
2 stops
$953LATAM Airlines
Wed, Nov 4 - Mon, Nov 9
Copa Airlines Logo
1:16 am - 12:16 am
IAD
-
ROS
21h 00m
1 stop
Copa Airlines Logo
1:16 am - 3:15 am
ROS
-
IAD
27h 59m
1 stop
$1,290Copa Airlines
Thu, Oct 1 - Sat, Oct 10
Copa Airlines Logo
6:00 am - 12:17 am
BWI
-
ROS
17h 17m
2 stops
Copa Airlines Logo
1:23 am - 3:15 pm
ROS
-
BWI
14h 52m
1 stop
$1,964Copa Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Rosario flights

Get data-powered insights and trends into flights from Washington, D.C. to Rosario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. to Rosario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Washington, D.C. to Rosario were found on Copa Airlines ($787) and LATAM Airlines ($926).

Find deals

Good to know

Cheapest flight$787
Flight from Reagan Washington National Airport to Rosario

When to book flights from Washington, D.C. to Rosario

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Rosario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Rosario

  • What is the cheapest flight from Washington, D.C. to Rosario?

    In the last 5 days, the lowest price for a flight from Washington, D.C. to Rosario was $787 for a round-trip ticket.

  • Do I need a passport to fly between Washington, D.C. and Rosario?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Rosario?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Rosario. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Rosario Fisherton.

  • Which aircraft models fly most regularly from Washington, D.C. to Rosario?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Rosario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Rosario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Rosario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rosario from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Rosario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rosario with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Rosario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rosario from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Washington, D.C. to Rosario

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Rosario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Rosario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Copa AirlinesOverall score based on 1568 reviews
6.8Entertainment
7.7Boarding
7.4Comfort
8.1Crew
6.9Food
Airline reviews

Entire experience from check in to landing was amazing the flight crew was excellent and friendly. Seats were comfortable.

10.0 ExcellentK Anson, Apr 2026
POS - PTY
Read more Copa Airlines reviews

Entire experience from check in to landing was amazing the flight crew was excellent and friendly. Seats were comfortable.

Avoid at all costs. My wife had to stay back on a connecting flight as her parents flight was delayed. 10 days later on the way back they cancelled all our flights. We had to rebook all four of us on the next days flight.

The food is terrible I ask for water never got transport my mother we’re late and my sister from Lima was the worst waiting to long for wheelchair

Do not book it’s a scam! They stole $1200 from me

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

I always enjoy flying Copa. There are very few airlines where I can enjoy a comfortable sleep in-flight. The snacks weren't the best, but they sufficed. The in-flight entertainment was fantastic, and I crossed another movie off my watch list.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

Everything you need to know for your flight from Washington, D.C. to Rosario

Information on your arrival and departure airports

Rosario (ROS)