Cheap flights from Washington, D.C. to Rosario from $959

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Rosario departing on 5/1. 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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Find the cheapest flights from Washington, D.C. to Rosario

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
5:00 pm - 6:05 am
DCA
-
ROS
36h 05m
2 stops
LATAM Airlines Logo
7:35 am - 10:00 am
ROS
-
DCA
27h 25m
2 stops
$959LATAM Airlines
Fri, May 1 - Fri, May 8
LATAM Airlines Logo
6:50 pm - 6:05 am
IAD
-
ROS
34h 15m
2 stops
LATAM Airlines Logo
7:35 am - 12:51 am
ROS
-
IAD
18h 16m
2 stops
$959LATAM Airlines
Fri, May 1 - Fri, May 8
LATAM Airlines Logo
7:05 am - 11:10 am
IAD
-
ROS
27h 05m
2 stops
LATAM Airlines Logo
7:35 am - 12:23 pm
ROS
-
IAD
29h 48m
2 stops
$984LATAM Airlines
Sun, May 3 - Sun, May 10
LATAM Airlines Logo
7:00 am - 11:10 am
BWI
-
ROS
27h 10m
2 stops
LATAM Airlines Logo
7:35 am - 12:57 am
ROS
-
BWI
18h 22m
2 stops
$1,005LATAM Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
6:50 am - 9:45 pm
IAD
-
ROS
37h 55m
2 stops
Multiple Airlines Logo
7:20 pm - 5:20 am
ROS
-
IAD
35h 00m
2 stops
$1,134Multiple Airlines
Sat, Apr 18 - Sat, Apr 25
Copa Airlines Logo
2:21 am - 12:27 am
IAD
-
ROS
21h 06m
1 stop
Copa Airlines Logo
5:09 am - 12:33 am
ROS
-
IAD
20h 24m
1 stop
$1,209Copa Airlines
Thu, Apr 30 - Fri, May 8
Multiple Airlines Logo
6:50 am - 7:50 am
IAD
-
ROS
24h 00m
2 stops
Multiple Airlines Logo
3:10 am - 5:20 am
ROS
-
IAD
27h 10m
3 stops
$1,289Multiple Airlines
Sun, May 3 - Sat, May 9
Copa Airlines Logo
9:32 am - 12:30 am
IAD
-
ROS
13h 58m
1 stop
Copa Airlines Logo
1:36 am - 3:06 pm
ROS
-
IAD
14h 30m
1 stop
$1,305Copa Airlines
Sat, Apr 18 - Fri, Apr 24
Multiple Airlines Logo
4:33 pm - 12:30 am
IAD
-
ROS
30h 57m
1 stop
Multiple Airlines Logo
8:20 pm - 5:20 am
ROS
-
IAD
34h 00m
2 stops
$1,310Multiple Airlines
Sat, Apr 18 - Sat, Apr 25
LATAM Airlines Logo
6:59 am - 11:10 am
DCA
-
ROS
27h 11m
2 stops
LATAM Airlines Logo
7:35 am - 1:49 pm
ROS
-
DCA
31h 14m
2 stops
$1,326LATAM Airlines
Sun, May 3 - Sun, May 10

Delta flights from Washington, D.C. to Rosario

Our best Delta deals on Washington, D.C. to Rosario flight tickets
Delta
Aug 29
IAD6:00 amWashington, D.C. Dulles Intl
32h 25m
2 stops
ROS3:25 pmRosario Fisherton
Sep 15
ROS7:35 amRosario Fisherton
17h 35m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$831
Delta
Aug 30
IAD7:00 amWashington, D.C. Dulles Intl
27h 10m
2 stops
ROS11:10 amRosario Fisherton
Sep 17
ROS4:45 pmRosario Fisherton
20h 06m
2 stops
IAD11:51 amWashington, D.C. Dulles Intl
$1,061
Delta
Sep 4
IAD4:00 pmWashington, D.C. Dulles Intl
37h 05m
2 stops
ROS6:05 amRosario Fisherton
Sep 13
ROS7:35 amRosario Fisherton
26h 35m
2 stops
IAD9:10 amWashington, D.C. Dulles Intl
$1,085

LATAM Airlines flights from Washington, D.C. to Rosario

Our best LATAM Airlines deals on Washington, D.C. to Rosario flight tickets
LATAM Airlines
Aug 29
IAD6:00 amWashington, D.C. Dulles Intl
32h 25m
2 stops
ROS3:25 pmRosario Fisherton
Sep 13
ROS7:35 amRosario Fisherton
17h 35m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$873
LATAM Airlines
May 1
IAD6:50 pmWashington, D.C. Dulles Intl
34h 15m
2 stops
ROS6:05 amRosario Fisherton
May 8
ROS7:35 amRosario Fisherton
18h 16m
2 stops
IAD12:51 amWashington, D.C. Dulles Intl
$959
LATAM Airlines
May 3
IAD7:05 amWashington, D.C. Dulles Intl
27h 05m
2 stops
ROS11:10 amRosario Fisherton
May 10
ROS7:35 amRosario Fisherton
29h 48m
2 stops
IAD12:23 pmWashington, D.C. Dulles Intl
$984

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Rosario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Rosario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Fri 5/1

5:00 pm-6:05 am

2 stops36h 05m

Rosario Fisherton

Fri 5/8

7:35 am-10:00 am

2 stops27h 25m

$959

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Fri 5/1

6:50 pm-6:05 am

2 stops34h 15m

Rosario Fisherton

Fri 5/8

7:35 am-12:51 am

2 stops18h 16m

$959

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 5/3

7:05 am-11:10 am

2 stops27h 05m

Rosario Fisherton

Sun 5/10

7:35 am-12:23 pm

2 stops29h 48m

$984

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Sun 5/3

7:00 am-11:10 am

2 stops27h 10m

Rosario Fisherton

Sun 5/10

7:35 am-12:57 am

2 stops18h 22m

$1,005

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 4/18

6:50 am-9:45 pm

2 stops37h 55m

Rosario Fisherton

Sat 4/25

7:20 pm-5:20 am

2 stops35h 00m

$1,134

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Thu 4/30

2:21 am-12:27 am

1 stop21h 06m

Rosario Fisherton

Fri 5/8

5:09 am-12:33 am

1 stop20h 24m

$1,209

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 5/3

6:50 am-7:50 am

2 stops24h 00m

Rosario Fisherton

Sat 5/9

3:10 am-5:20 am

3 stops27h 10m

$1,289
Quickest round-trip

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 4/18

9:32 am-12:30 am

1 stop13h 58m

Rosario Fisherton

Fri 4/24

1:36 am-3:06 pm

1 stop14h 30m

$1,305

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 4/18

4:33 pm-12:30 am

1 stop30h 57m

Rosario Fisherton

Sat 4/25

8:20 pm-5:20 am

2 stops34h 00m

$1,310

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Sun 5/3

6:59 am-11:10 am

2 stops27h 11m

Rosario Fisherton

Sun 5/10

7:35 am-1:49 pm

2 stops31h 14m

$1,326

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Rosario from

How to get the cheapest flight ticket from Washington, D.C. to Rosario

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

How long does it take to fly to Rosario?

The flight from Washington, D.C. to Rosario depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Baltimore (a popular airport in Washington, D.C.) to Rosario (the most popular airport in Rosario), then the flight time is 22h 05m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to Rosario, then the average flight time is 26h 05m.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Rosario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Rosario (WAS to ROS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Rosario

Fastest flight time

22h 05m

Direct flights

None
The fastest flight from Washington, D.C. to Rosario takes 22h 05m
There are no direct flights from Washington, D.C. to Rosario. There are no popular flight routes from Washington, D.C. to Rosario.
  • How far is Washington, D.C. to Rosario Fisherton by plane?

    A flight from Washington, D.C. to Rosario Fisherton will travel around 5071.3 mi. A reasonable flight in good conditions will take 22h 05m.

  • When did momondo last update prices for flights from Washington, D.C. to Rosario Fisherton Airport?

    Prices for flights from Washington, D.C. to Rosario Fisherton Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Rosario Fisherton Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Rosario Fisherton Airport.

  • What documentation or ID do you need to fly to Rosario Fisherton Airport?

    The necessary travel and health documents for your Rosario Fisherton Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to Rosario?

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Why should I use momondo to find a flight deal from Washington, D.C. to Rosario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Rosario for you.

Can I find flights from Washington, D.C. to Rosario with flexible booking policies on momondo?

Flights from Washington, D.C. to Rosario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Rosario?

momondo helps you find the best flight between Washington, D.C. and Rosario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Rosario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Rosario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Tue 4/21
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