WAS - ROS

$384 Find Cheap Flights from Washington, D.C. to Rosario

This is the cheapest one-way 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 5/24. 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

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Everything you should know

Cheapest round-trip
$912
Multiple Airlines
Tue 9/22Wed 9/30
DCA - ROS • 2 stops
Cheapest one-way
$384
Multiple Airlines
Sun 5/24
IAD - ROS • 2 stops
Top airlines
LATAM Airlines
Cheapest • from $925 (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.
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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

Tue, Sep 22 - Wed, Sep 30
Multiple Airlines Logo
6:30 am - 11:40 am
DCA
-
ROS
28h 10m
2 stops
Multiple Airlines Logo
12:40 pm - 2:50 pm
ROS
-
DCA
27h 10m
2 stops
$912Multiple Airlines
Mon, Aug 24 - Wed, Aug 26
LATAM Airlines Logo
12:15 pm - 6:05 am
BWI
-
ROS
16h 50m
2 stops
LATAM Airlines Logo
7:35 am - 12:16 am
ROS
-
BWI
17h 41m
2 stops
$925LATAM Airlines
Tue, May 12 - Mon, May 18
Delta Logo
12:00 pm - 6:05 am
DCA
-
ROS
17h 05m
2 stops
Delta Logo
12:25 pm - 5:07 pm
ROS
-
DCA
29h 42m
2 stops
$925Delta
Tue, May 12 - Mon, May 18
LATAM Airlines Logo
3:08 pm - 11:30 am
IAD
-
ROS
19h 22m
2 stops
LATAM Airlines Logo
12:25 pm - 12:18 pm
ROS
-
IAD
24h 53m
2 stops
$925LATAM Airlines
Mon, May 25 - Mon, Jun 1
LATAM Airlines Logo
2:47 pm - 6:05 am
DCA
-
ROS
38h 18m
2 stops
LATAM Airlines Logo
12:40 pm - 10:59 pm
ROS
-
DCA
35h 19m
2 stops
$939LATAM Airlines
Mon, May 4 - Sun, May 10
LATAM Airlines Logo
5:27 pm - 6:05 am
IAD
-
ROS
35h 38m
2 stops
LATAM Airlines Logo
7:35 am - 12:51 am
ROS
-
IAD
18h 16m
2 stops
$956LATAM Airlines
Mon, May 4 - Sun, May 10
LATAM Airlines Logo
5:33 pm - 6:05 am
BWI
-
ROS
35h 32m
2 stops
LATAM Airlines Logo
7:35 am - 12:57 am
ROS
-
BWI
18h 22m
2 stops
$980LATAM Airlines
Tue, Sep 22 - Wed, Sep 30
LATAM Airlines Logo
7:00 am - 6:05 am
BWI
-
ROS
22h 05m
2 stops
LATAM Airlines Logo
7:35 am - 9:16 am
ROS
-
BWI
26h 41m
2 stops
$984LATAM Airlines
Tue, May 12 - Mon, May 18
Multiple Airlines Logo
6:50 am - 6:05 am
IAD
-
ROS
22h 15m
3 stops
Multiple Airlines Logo
12:25 pm - 2:15 pm
ROS
-
IAD
26h 50m
3 stops
$1,275Multiple Airlines
Tue, May 12 - Sun, May 17
Copa Airlines Logo
9:37 am - 3:42 am
IAD
-
ROS
17h 05m
1 stop
Copa Airlines Logo
1:33 am - 3:05 pm
ROS
-
IAD
14h 32m
1 stop
$1,335Copa 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 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Rosario were found on LATAM Airlines ($925) and Delta ($925).

Find deals

Good to know

Cheapest flight$384
Flight from Washington Dulles 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 3 days, the lowest price for a flight from Washington, D.C. to Rosario was $384 for a one-way ticket and $912 for a round-trip.

  • 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 1577 reviews
6.8Food
6.8Entertainment
7.8Boarding
7.4Comfort
8.1Crew
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.

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

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

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

Information on your arrival and departure airports

Rosario (ROS)