Cheap flights from Washington, D.C. Dulles Intl Airport to Rosario from $435

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 4/4. 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

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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.
Multiple Airlines Logo
6:50 am - 8:40 am
IAD
-
ROS
24h 50m
2 stops
Multiple Airlines Logo
8:20 am - 5:20 am
ROS
-
IAD
22h 00m
2 stops
$760Multiple Airlines
vie., may. 15 - vie., may. 22
Multiple Airlines Logo
6:50 am - 7:20 am
IAD
-
ROS
23h 30m
2 stops
Multiple Airlines Logo
8:50 am - 2:15 pm
ROS
-
IAD
30h 25m
2 stops
$900Multiple Airlines
dom., abr. 12 - jue., abr. 16
LATAM Airlines Logo
6:00 am - 3:25 pm
IAD
-
ROS
32h 25m
2 stops
LATAM Airlines Logo
7:35 am - 12:10 am
ROS
-
IAD
17h 35m
2 stops
$915LATAM Airlines
lun., ago. 31 - mié., sep. 2
LATAM Airlines Logo
4:00 pm - 3:25 pm
IAD
-
ROS
22h 25m
2 stops
LATAM Airlines Logo
7:35 am - 12:10 am
ROS
-
IAD
17h 35m
2 stops
$955LATAM Airlines
lun., ago. 31 - mié., sep. 2
LATAM Airlines Logo
7:33 pm - 11:10 am
IAD
-
ROS
38h 37m
2 stops
LATAM Airlines Logo
12:10 pm - 12:18 pm
ROS
-
IAD
25h 08m
2 stops
$1,026LATAM Airlines
sáb., may. 9 - sáb., may. 16
Multiple Airlines Logo
3:35 pm - 6:40 pm
IAD
-
ROS
26h 05m
2 stops
Multiple Airlines Logo
8:05 pm - 5:20 am
ROS
-
IAD
34h 15m
2 stops
$1,114Multiple Airlines
jue., may. 14 - jue., may. 21
Multiple Airlines Logo
6:50 am - 8:40 am
IAD
-
ROS
24h 50m
2 stops
Multiple Airlines Logo
7:35 am - 6:15 pm
ROS
-
IAD
35h 40m
3 stops
$1,179Multiple Airlines
vie., may. 15 - vie., may. 22
Copa Airlines Logo
9:37 am - 12:27 am
IAD
-
ROS
13h 50m
1 stop
Copa Airlines Logo
5:09 am - 12:33 am
ROS
-
IAD
20h 24m
1 stop
$1,269Copa Airlines
sáb., may. 9 - sáb., may. 16
Multiple Airlines Logo
6:50 am - 6:05 am
IAD
-
ROS
22h 15m
3 stops
Multiple Airlines Logo
8:20 pm - 5:20 am
ROS
-
IAD
34h 00m
2 stops
$1,292Multiple Airlines
sáb., may. 9 - sáb., may. 16
Multiple Airlines Logo
4:38 pm - 12:27 am
IAD
-
ROS
30h 49m
1 stop
Multiple Airlines Logo
8:05 pm - 5:20 am
ROS
-
IAD
34h 15m
2 stops
$1,320Multiple Airlines
jue., may. 14 - jue., may. 21

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
May 9
IAD9:37 amWashington, D.C. Dulles Intl
13h 50m
1 stop
ROS12:27 amRosario Fisherton
May 16
ROS5:09 amRosario Fisherton
20h 24m
1 stop
IAD12:33 amWashington, D.C. Dulles Intl
$1,269
Copa Airlines
May 15
IAD9:37 amWashington, D.C. Dulles Intl
17h 05m
1 stop
ROS3:42 amRosario Fisherton
May 22
ROS5:09 amRosario Fisherton
20h 24m
1 stop
IAD12:33 amWashington, D.C. Dulles Intl
$1,828
Copa Airlines
May 13
IAD2:21 amWashington, D.C. Dulles Intl
21h 06m
1 stop
ROS12:27 amRosario Fisherton
May 20
ROS1:33 amRosario Fisherton
14h 32m
1 stop
IAD3:05 pmWashington, D.C. Dulles Intl
$2,499

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 31
IAD6:00 amWashington, D.C. Dulles Intl
32h 25m
2 stops
ROS3:25 pmRosario Fisherton
Sep 2
ROS7:35 amRosario Fisherton
17h 35m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$915
LATAM Airlines
Aug 31
IAD4:00 pmWashington, D.C. Dulles Intl
22h 25m
2 stops
ROS3:25 pmRosario Fisherton
Sep 2
ROS7:35 amRosario Fisherton
17h 35m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$955
LATAM Airlines
May 9
IAD7:33 pmWashington, D.C. Dulles Intl
38h 37m
2 stops
ROS11:10 amRosario Fisherton
May 16
ROS12:10 pmRosario Fisherton
25h 08m
2 stops
IAD12:18 pmWashington, D.C. Dulles Intl
$1,026

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 marzo 28, 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

vie. 5/15

6:50 am-8:40 am

2 stops24h 50m

Rosario Fisherton

vie. 5/22

8:20 am-5:20 am

2 stops22h 00m

$760

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

dom. 4/12

6:50 am-7:20 am

2 stops23h 30m

Rosario Fisherton

jue. 4/16

8:50 am-2:15 pm

2 stops30h 25m

$900

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

lun. 8/31

6:00 am-3:25 pm

2 stops32h 25m

Rosario Fisherton

mié. 9/2

7:35 am-12:10 am

2 stops17h 35m

$915

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

lun. 8/31

4:00 pm-3:25 pm

2 stops22h 25m

Rosario Fisherton

mié. 9/2

7:35 am-12:10 am

2 stops17h 35m

$955

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

sáb. 5/9

7:33 pm-11:10 am

2 stops38h 37m

Rosario Fisherton

sáb. 5/16

12:10 pm-12:18 pm

2 stops25h 08m

$1,026

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

jue. 5/14

3:35 pm-6:40 pm

2 stops26h 05m

Rosario Fisherton

jue. 5/21

8:05 pm-5:20 am

2 stops34h 15m

$1,114

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

vie. 5/15

6:50 am-8:40 am

2 stops24h 50m

Rosario Fisherton

vie. 5/22

7:35 am-6:15 pm

3 stops35h 40m

$1,179
Quickest round-trip

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

sáb. 5/9

9:37 am-12:27 am

1 stop13h 50m

Rosario Fisherton

sáb. 5/16

5:09 am-12:33 am

1 stop20h 24m

$1,269

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

sáb. 5/9

6:50 am-6:05 am

3 stops22h 15m

Rosario Fisherton

sáb. 5/16

8:20 pm-5:20 am

2 stops34h 00m

$1,292

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

jue. 5/14

4:38 pm-12:27 am

1 stop30h 49m

Rosario Fisherton

jue. 5/21

8:05 pm-5:20 am

2 stops34h 15m

$1,320

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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. 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

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

Copa Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Rosario Fisherton

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

24h 50m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Rosario takes 24h 50m
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.
  • 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 24h 50m.

  • 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
lun. 4/27
lun. 5/4

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