Cheap flights from Washington, D.C. Dulles Intl Airport to Rosario from $362

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. Dulles Intl Airport to Rosario departing on 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
6:00 am - 6:10 am
IAD
-
ROS
23h 10m
2 stops
LATAM Airlines Logo
12:40 pm - 7:18 pm
ROS
-
IAD
31h 38m
2 stops
$926LATAM Airlines
Mon, Aug 17 - Fri, Aug 21
LATAM Airlines Logo
12:30 pm - 11:10 am
IAD
-
ROS
20h 40m
2 stops
LATAM Airlines Logo
7:35 am - 12:20 am
ROS
-
IAD
18h 45m
2 stops
$1,111LATAM Airlines
Thu, Nov 5 - Wed, Nov 11
LATAM Airlines Logo
12:30 pm - 11:10 am
IAD
-
ROS
20h 40m
2 stops
LATAM Airlines Logo
4:45 pm - 11:52 am
ROS
-
IAD
21h 07m
2 stops
$1,203LATAM Airlines
Thu, Nov 5 - Tue, Nov 10
LATAM Airlines Logo
12:30 pm - 11:10 am
IAD
-
ROS
20h 40m
2 stops
LATAM Airlines Logo
4:45 pm - 11:52 am
ROS
-
IAD
21h 07m
2 stops
$1,237LATAM Airlines
Thu, Nov 5 - Tue, Nov 10
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
$1,272Copa 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
$1,282Copa Airlines
Wed, Nov 4 - Mon, Nov 9
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
$1,336LATAM Airlines
Wed, Jul 29 - Sun, Aug 2
Copa Airlines Logo
6:25 am - 12:12 am
IAD
-
ROS
16h 47m
1 stop
Copa Airlines Logo
1:23 am - 12:33 am
ROS
-
IAD
24h 10m
1 stop
$1,399Copa Airlines
Fri, Jul 3 - Wed, Jul 8
Copa Airlines Logo
2:22 am - 12:12 am
IAD
-
ROS
20h 50m
1 stop
Copa Airlines Logo
1:23 am - 3:05 pm
ROS
-
IAD
14h 42m
1 stop
$1,413Copa Airlines
Tue, Jul 28 - Sat, Aug 1
LATAM Airlines Logo
8:28 am - 6:10 am
IAD
-
ROS
20h 42m
2 stops
LATAM Airlines Logo
12:40 pm - 11:49 am
ROS
-
IAD
24h 09m
2 stops
$1,435LATAM Airlines
Mon, Aug 17 - Fri, Aug 21

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Copa Airlines flights from Washington, D.C. Dulles Intl Airport to Rosario

Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport 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
$1,272
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
$1,282
Copa Airlines
Jul 3
IAD6:25 amWashington, D.C. Dulles Intl
16h 47m
1 stop
ROS12:12 amRosario Fisherton
Jul 8
ROS1:23 amRosario Fisherton
24h 10m
1 stop
IAD12:33 amWashington, D.C. Dulles Intl
$1,399

LATAM Airlines flights from Washington, D.C. Dulles Intl Airport to Rosario

Our best LATAM Airlines deals on Washington, D.C. Dulles Intl Airport to Rosario flight tickets
LATAM Airlines
Aug 17
IAD6:00 amWashington, D.C. Dulles Intl
23h 10m
2 stops
ROS6:10 amRosario Fisherton
Aug 21
ROS12:40 pmRosario Fisherton
31h 38m
2 stops
IAD7:18 pmWashington, D.C. Dulles Intl
$926
LATAM Airlines
Nov 5
IAD12:30 pmWashington, D.C. Dulles Intl
20h 40m
2 stops
ROS11:10 amRosario Fisherton
Nov 11
ROS7:35 amRosario Fisherton
18h 45m
2 stops
IAD12:20 amWashington, D.C. Dulles Intl
$1,111
LATAM Airlines
Nov 5
IAD12:30 pmWashington, D.C. Dulles Intl
20h 40m
2 stops
ROS11:10 amRosario Fisherton
Nov 10
ROS4:45 pmRosario Fisherton
21h 07m
2 stops
IAD11:52 amWashington, D.C. Dulles Intl
$1,203

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 19, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Mon 8/17

6:00 am-6:10 am

2 stops23h 10m

Rosario Fisherton

Fri 8/21

12:40 pm-7:18 pm

2 stops31h 38m

$926

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Thu 11/5

12:30 pm-11:10 am

2 stops20h 40m

Rosario Fisherton

Wed 11/11

7:35 am-12:20 am

2 stops18h 45m

$1,111

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Thu 11/5

12:30 pm-11:10 am

2 stops20h 40m

Rosario Fisherton

Tue 11/10

4:45 pm-11:52 am

2 stops21h 07m

$1,203

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Thu 11/5

12:30 pm-11:10 am

2 stops20h 40m

Rosario Fisherton

Tue 11/10

4:45 pm-11:52 am

2 stops21h 07m

$1,237

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

$1,272

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

$1,282

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

$1,336

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Fri 7/3

6:25 am-12:12 am

1 stop16h 47m

Rosario Fisherton

Wed 7/8

1:23 am-12:33 am

1 stop24h 10m

$1,399
Quickest round-trip

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Tue 7/28

2:22 am-12:12 am

1 stop20h 50m

Rosario Fisherton

Sat 8/1

1:23 am-3:05 pm

1 stop14h 42m

$1,413

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Mon 8/17

8:28 am-6:10 am

2 stops20h 42m

Rosario Fisherton

Fri 8/21

12:40 pm-11:49 am

2 stops24h 09m

$1,435

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Rosario flights?

You could potentially save up to 18% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Rosario flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Rosario

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Rosario (IAD to ROS) flight deals and tips

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

Fastest flight time

16h 47m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Rosario takes 16h 47m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Rosario. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Rosario.

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Rosario

  • How far is Washington, D.C. Dulles Intl to Rosario Fisherton by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Rosario Fisherton is 5079.7 mi. A reasonable flight in good conditions will take 16h 47m.

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

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

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

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

    The travel and health documents you'll need for your trip to Rosario Fisherton Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rosario Fisherton Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Rosario from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Rosario quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Rosario from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Washington, D.C. to Rosario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Rosario from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Sun 7/19
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