Cheap flights from Washington, D.C. to Rosario from $1,356

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 2/8. 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

Copa Airlines Logo
3:45 pm - 12:20 amBWI-ROS
30h 35m1 stop
Copa Airlines Logo
5:20 am - 2:10 pmROS-BWI
34h 50m1 stop
$1,356Copa Airlines
Find Deal
Sun, Feb 8 - Tue, Feb 10
Copa Airlines Logo
8:29 am - 12:20 amIAD-ROS
13h 51m1 stop
Copa Airlines Logo
1:34 am - 3:15 amROS-IAD
27h 41m1 stop
$1,377Copa Airlines
Find Deal
Sun, Feb 8 - Mon, Feb 9
Copa Airlines Logo
3:45 pm - 12:20 amBWI-ROS
30h 35m1 stop
Copa Airlines Logo
5:20 am - 2:10 pmROS-BWI
34h 50m1 stop
$1,391Copa Airlines
Find Deal
Sun, Feb 8 - Tue, Feb 10
Copa Airlines Logo
8:29 am - 12:20 amIAD-ROS
13h 51m1 stop
Copa Airlines Logo
5:20 am - 3:15 amROS-IAD
23h 55m1 stop
$1,406Copa Airlines
Find Deal
Sun, Feb 8 - Tue, Feb 10
Copa Airlines Logo
1:18 am - 12:20 amIAD-ROS
21h 02m1 stop
Copa Airlines Logo
1:34 am - 3:15 amROS-IAD
27h 41m1 stop
$1,441Copa Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Copa Airlines Logo
1:18 am - 12:20 amIAD-ROS
21h 02m1 stop
Copa Airlines Logo
5:20 am - 11:32 pmROS-IAD
20h 12m1 stop
$1,470Copa Airlines
Find Deal
Sat, Feb 7 - Tue, Feb 10
Copa Airlines Logo
1:18 am - 12:20 amIAD-ROS
21h 02m1 stop
Copa Airlines Logo
1:34 am - 2:02 pmROS-IAD
14h 28m1 stop
$1,505Copa Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Copa Airlines Logo
8:29 am - 12:20 amIAD-ROS
13h 51m1 stop
Copa Airlines Logo
5:20 am - 3:15 amROS-IAD
23h 55m1 stop
$1,543Copa Airlines
Find Deal
Sun, Feb 8 - Tue, Feb 10
Copa Airlines Logo
8:29 am - 12:20 amIAD-ROS
13h 51m1 stop
Copa Airlines Logo
1:34 am - 2:02 pmROS-IAD
14h 28m1 stop
$1,578Copa Airlines
Find Deal
Sun, Feb 8 - Mon, Feb 9
Copa Airlines Logo
8:29 am - 12:20 amIAD-ROS
13h 51m1 stop
Copa Airlines Logo
1:34 am - 3:15 amROS-IAD
27h 41m1 stop
$1,581Copa Airlines
Find Deal
Sun, Feb 8 - Mon, Feb 9

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

Our best Copa Airlines deals on Washington, D.C. to Rosario flight tickets
Copa Airlines
Feb 8
BWI3:45 pmBaltimore/Washington
30h 35m
1 stop
ROS12:20 amRosario Fisherton
Feb 10
ROS5:20 amRosario Fisherton
34h 50m
1 stop
BWI2:10 pmBaltimore/Washington
Copa Airlines
Feb 8
IAD8:29 amWashington, D.C. Dulles Intl
13h 51m
1 stop
ROS12:20 amRosario Fisherton
Feb 9
ROS1:34 amRosario Fisherton
27h 41m
1 stop
IAD3:15 amWashington, D.C. Dulles Intl
Copa Airlines
Feb 8
BWI3:45 pmBaltimore/Washington
30h 35m
1 stop
ROS12:20 amRosario Fisherton
Feb 10
ROS5:20 amRosario Fisherton
34h 50m
1 stop
BWI2:10 pmBaltimore/Washington

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 September 15, 2025.
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

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Sun 2/8

3:45 pm-12:20 am

1 stop30h 35m

Rosario Fisherton

Tue 2/10

5:20 am-2:10 pm

1 stop34h 50m

$1,356

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 2/8

8:29 am-12:20 am

1 stop13h 51m

Rosario Fisherton

Mon 2/9

1:34 am-3:15 am

1 stop27h 41m

$1,377

BaltimoreRosario

BWI - ROS

BWIROS

Baltimore/Washington

Sun 2/8

3:45 pm-12:20 am

1 stop30h 35m

Rosario Fisherton

Tue 2/10

5:20 am-2:10 pm

1 stop34h 50m

$1,391

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 2/8

8:29 am-12:20 am

1 stop13h 51m

Rosario Fisherton

Tue 2/10

5:20 am-3:15 am

1 stop23h 55m

$1,406

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 2/7

1:18 am-12:20 am

1 stop21h 02m

Rosario Fisherton

Mon 2/9

1:34 am-3:15 am

1 stop27h 41m

$1,441

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 2/7

1:18 am-12:20 am

1 stop21h 02m

Rosario Fisherton

Tue 2/10

5:20 am-11:32 pm

1 stop20h 12m

$1,470

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sat 2/7

1:18 am-12:20 am

1 stop21h 02m

Rosario Fisherton

Mon 2/9

1:34 am-2:02 pm

1 stop14h 28m

$1,505

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 2/8

8:29 am-12:20 am

1 stop13h 51m

Rosario Fisherton

Tue 2/10

5:20 am-3:15 am

1 stop23h 55m

$1,543

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 2/8

8:29 am-12:20 am

1 stop13h 51m

Rosario Fisherton

Mon 2/9

1:34 am-2:02 pm

1 stop14h 28m

$1,578

Washington, D.C.Rosario

IAD - ROS

IADROS

Washington, D.C. Dulles Intl

Sun 2/8

8:29 am-12:20 am

1 stop13h 51m

Rosario Fisherton

Mon 2/9

1:34 am-3:15 am

1 stop27h 41m

$1,581

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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 day to depart on your flight to Rosario?

The cheapest day to depart on your flight to Rosario is on a Thursday when prices can be found for as low as $1,119. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,765. These prices are subject to change though, so be sure to set up a Price Alert for flights to Rosario.

What is the cheapest time of day to depart on your flight to Rosario?

The cheapest time of day to fly to Rosario is in the morning when flights can be purchased for as low as $1,266. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,288 on average. Flights to Rosario from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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 13h 51m.

  • 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.

Why use momondo?

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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1 adult
Wed 10/15
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