Cheap flights from Washington, D.C. to Rosario from $334

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 8/17. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Rosario

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$914Copa Airlines
Wed, Nov 4 - Mon, Nov 9
LATAM Airlines Logo
2:55 pm - 11:15 am
DCA
-
ROS
42h 20m
2 stops
LATAM Airlines Logo
12:30 pm - 10:24 am
ROS
-
DCA
23h 54m
2 stops
$930LATAM Airlines
Thu, Nov 5 - Tue, Nov 10
LATAM Airlines Logo
12:37 pm - 6:10 am
IAD
-
ROS
40h 33m
2 stops
LATAM Airlines Logo
7:40 am - 12:41 am
ROS
-
IAD
18h 01m
2 stops
$930LATAM Airlines
Wed, Jul 29 - Sun, Aug 2
LATAM Airlines Logo
12:26 pm - 11:40 am
DCA
-
ROS
22h 14m
2 stops
LATAM Airlines Logo
12:40 pm - 4:48 pm
ROS
-
DCA
29h 08m
2 stops
$991LATAM Airlines
Tue, Sep 15 - Mon, Sep 21
LATAM Airlines Logo
12:31 pm - 11:40 am
IAD
-
ROS
22h 09m
2 stops
LATAM Airlines Logo
12:40 pm - 9:10 am
ROS
-
IAD
45h 30m
2 stops
$999LATAM Airlines
Tue, Sep 15 - Mon, Sep 21
LATAM Airlines Logo
7:05 am - 11:40 am
BWI
-
ROS
27h 35m
2 stops
LATAM Airlines Logo
12:40 pm - 9:16 am
ROS
-
BWI
45h 36m
2 stops
$1,019LATAM Airlines
Tue, Sep 15 - Mon, Sep 21
LATAM Airlines Logo
5:47 pm - 6:10 am
IAD
-
ROS
35h 23m
2 stops
LATAM Airlines Logo
12:40 pm - 6:33 pm
ROS
-
IAD
30h 53m
2 stops
$1,132LATAM Airlines
Mon, Aug 10 - Mon, Aug 17
Copa Airlines Logo
2:25 am - 3:43 am
IAD
-
ROS
24h 18m
1 stop
Copa Airlines Logo
1:23 am - 12:33 am
ROS
-
IAD
24h 10m
1 stop
$1,159Copa Airlines
Sun, Aug 9 - Sun, Aug 16
GOL Logo
5:04 pm - 2:05 am
BWI
-
ROS
31h 01m
2 stops
GOL Logo
2:55 am - 2:21 pm
ROS
-
BWI
37h 26m
2 stops
$2,882GOL
Wed, Dec 16 - Sat, Jan 2
GOL Logo
5:04 pm - 2:05 am
BWI
-
ROS
31h 01m
2 stops
GOL Logo
2:55 am - 2:21 pm
ROS
-
BWI
37h 26m
2 stops
$2,883GOL
Wed, Dec 16 - Sat, Jan 2

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

Our best LATAM Airlines deals on Washington, D.C. to Rosario flight tickets
LATAM Airlines
Nov 5
DCA2:55 pmWashington, D.C. Reagan-National
42h 20m
2 stops
ROS11:15 amRosario Fisherton
Nov 10
ROS12:30 pmRosario Fisherton
23h 54m
2 stops
DCA10:24 amWashington, D.C. Reagan-National
$930
LATAM Airlines
Sep 15
DCA12:26 pmWashington, D.C. Reagan-National
22h 14m
2 stops
ROS11:40 amRosario Fisherton
Sep 21
ROS12:40 pmRosario Fisherton
29h 08m
2 stops
DCA4:48 pmWashington, D.C. Reagan-National
$991
LATAM Airlines
Sep 15
IAD12:31 pmWashington, D.C. Dulles Intl
22h 09m
2 stops
ROS11:40 amRosario Fisherton
Sep 21
ROS12:40 pmRosario Fisherton
45h 30m
2 stops
IAD9:10 amWashington, D.C. Dulles Intl
$999

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

Our best Copa Airlines deals on Washington, D.C. to Rosario flight tickets
Copa Airlines
Nov 4
IAD1:16 amWashington, D.C. Dulles Intl
21h 00m
1 stop
ROS12:16 amRosario Fisherton
Nov 9
ROS1:16 amRosario Fisherton
27h 59m
1 stop
IAD3:15 amWashington, D.C. Dulles Intl
$914
Copa Airlines
Aug 9
IAD2:25 amWashington, D.C. Dulles Intl
24h 18m
1 stop
ROS3:43 amRosario Fisherton
Aug 16
ROS1:23 amRosario Fisherton
24h 10m
1 stop
IAD12:33 amWashington, D.C. Dulles Intl
$1,159
Copa Airlines
Nov 4
IAD1:16 amWashington, D.C. Dulles Intl
21h 00m
1 stop
ROS12:16 amRosario Fisherton
Nov 9
ROS1:16 amRosario Fisherton
27h 59m
1 stop
IAD3:15 amWashington, D.C. Dulles Intl
$1,272

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 June 26, 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

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Wed 11/4

1:16 am-12:16 am

1 stop21h 00m

Rosario Fisherton

Mon 11/9

1:16 am-3:15 am

1 stop27h 59m

$914

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Thu 11/5

2:55 pm-11:15 am

2 stops42h 20m

Rosario Fisherton

Tue 11/10

12:30 pm-10:24 am

2 stops23h 54m

$930

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Wed 7/29

12:37 pm-6:10 am

2 stops40h 33m

Rosario Fisherton

Sun 8/2

7:40 am-12:41 am

2 stops18h 01m

$930

Washington, D.C.Rosario

DCA - ROS

DCAROS

Washington, D.C. Reagan-National

Tue 9/15

12:26 pm-11:40 am

2 stops22h 14m

Rosario Fisherton

Mon 9/21

12:40 pm-4:48 pm

2 stops29h 08m

$991

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 9/15

12:31 pm-11:40 am

2 stops22h 09m

Rosario Fisherton

Mon 9/21

12:40 pm-9:10 am

2 stops45h 30m

$999

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Tue 9/15

7:05 am-11:40 am

2 stops27h 35m

Rosario Fisherton

Mon 9/21

12:40 pm-9:16 am

2 stops45h 36m

$1,019

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Mon 8/10

5:47 pm-6:10 am

2 stops35h 23m

Rosario Fisherton

Mon 8/17

12:40 pm-6:33 pm

2 stops30h 53m

$1,132
Quickest round-trip

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 8/9

2:25 am-3:43 am

1 stop24h 18m

Rosario Fisherton

Sun 8/16

1:23 am-12:33 am

1 stop24h 10m

$1,159

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Wed 12/16

5:04 pm-2:05 am

2 stops31h 01m

Rosario Fisherton

Sat 1/2

2:55 am-2:21 pm

2 stops37h 26m

$2,882

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Wed 12/16

5:04 pm-2:05 am

2 stops31h 01m

Rosario Fisherton

Sat 1/2

2:55 am-2:21 pm

2 stops37h 26m

$2,883

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

Can stopping save me money on Washington, D.C. to Rosario flights?

You could potentially save up to 48% on your flight if you consider stops on a Washington, D.C. to Rosario flight.

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

13h 44m

Direct flights

None
The fastest flight from Washington, D.C. to Rosario takes 13h 44m
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 13h 44m.

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

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1 adult
Sun 7/26
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