Cheap flights from Washington, D.C. to Rosario from $386

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 Rosario departing on 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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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.
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
Tue, Sep 22 - Wed, Sep 30
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
Mon, Aug 24 - Wed, Aug 26
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
Tue, May 12 - Mon, May 18
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 25 - Mon, Jun 1
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, Sep 22 - Wed, Sep 30
LATAM Airlines Logo
1:59 pm - 11:30 am
BWI
-
ROS
20h 31m
2 stops
LATAM Airlines Logo
12:25 pm - 12:53 pm
ROS
-
BWI
25h 28m
2 stops
$1,020LATAM Airlines
Tue, May 12 - Mon, May 18
LATAM Airlines Logo
12:30 pm - 11:40 am
IAD
-
ROS
22h 10m
2 stops
LATAM Airlines Logo
7:35 am - 12:10 am
ROS
-
IAD
17h 35m
2 stops
$1,024LATAM Airlines
Tue, Sep 22 - Wed, Sep 30
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 - Mon, May 18
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
Tue, May 12 - Sun, May 17

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 24
BWI12:15 pmBaltimore/Washington
16h 50m
2 stops
ROS6:05 amRosario Fisherton
Aug 26
ROS7:35 amRosario Fisherton
17h 41m
2 stops
BWI12:16 amBaltimore/Washington
$925
LATAM Airlines
May 25
DCA2:47 pmWashington, D.C. Reagan-National
38h 18m
2 stops
ROS6:05 amRosario Fisherton
Jun 1
ROS12:40 pmRosario Fisherton
35h 19m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$939
LATAM Airlines
Sep 22
BWI7:00 amBaltimore/Washington
22h 05m
2 stops
ROS6:05 amRosario Fisherton
Sep 30
ROS7:35 amRosario Fisherton
26h 41m
2 stops
BWI9:16 amBaltimore/Washington
$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 April 21, 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

Tue 9/22

6:30 am-11:40 am

2 stops28h 10m

Rosario Fisherton

Wed 9/30

12:40 pm-2:50 pm

2 stops27h 10m

$912

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Mon 8/24

12:15 pm-6:05 am

2 stops16h 50m

Rosario Fisherton

Wed 8/26

7:35 am-12:16 am

2 stops17h 41m

$925

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Tue 5/12

12:00 pm-6:05 am

2 stops17h 05m

Rosario Fisherton

Mon 5/18

12:25 pm-5:07 pm

2 stops29h 42m

$925

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 5/12

3:08 pm-11:30 am

2 stops19h 22m

Rosario Fisherton

Mon 5/18

12:25 pm-12:18 pm

2 stops24h 53m

$925

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Mon 5/25

2:47 pm-6:05 am

2 stops38h 18m

Rosario Fisherton

Mon 6/1

12:40 pm-10:59 pm

2 stops35h 19m

$939

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Tue 9/22

7:00 am-6:05 am

2 stops22h 05m

Rosario Fisherton

Wed 9/30

7:35 am-9:16 am

2 stops26h 41m

$984

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Tue 5/12

1:59 pm-11:30 am

2 stops20h 31m

Rosario Fisherton

Mon 5/18

12:25 pm-12:53 pm

2 stops25h 28m

$1,020

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 9/22

12:30 pm-11:40 am

2 stops22h 10m

Rosario Fisherton

Wed 9/30

7:35 am-12:10 am

2 stops17h 35m

$1,024

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 5/12

6:50 am-6:05 am

3 stops22h 15m

Rosario Fisherton

Mon 5/18

12:25 pm-2:15 pm

3 stops26h 50m

$1,275
Quickest round-trip

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 5/12

9:37 am-3:42 am

1 stop17h 05m

Rosario Fisherton

Sun 5/17

1:33 am-3:05 pm

1 stop14h 32m

$1,335

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

What is the cheapest airline that flies from Washington, D.C. to Rosario Fisherton?

Delta and Copa Airlines are the most popular carriers operating from Washington, D.C. to Rosario Fisherton

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

15h 55m

Direct flights

None
The fastest flight from Washington, D.C. to Rosario takes 15h 55m
There are no direct flights from Washington, D.C. to Rosario. There are no popular flight routes from Washington, D.C. to Rosario.

Frequently asked questions about flying 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 15h 55m.

  • 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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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?

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1 adult
Thu 5/21
Thu 5/28

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