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Rosario

$619+ Cheap flights from Boston (BOS) to Rosario (ROS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ROS
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
1 adult, Economy
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Cheap flight deals from Boston to Rosario

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Rosario (ROS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 15, 2026.

Round-trip from

$932
(Mytrip)

One-way from

$619
(Trip.com)
From Boston Logan Intl to Rosario Fisherton
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One-way flight from Boston Logan Intl to Rosario Fisherton
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Find flight deals from Boston to Rosario

Cheapest flights from Boston to Rosario
Explore the most affordable flight options available from Boston to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 15, 2026.

This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/57:44 am
BOS
-
ROS
3 stops27h 41m
Multiple Airlines
mié. 3/119:00 am
ROS
-
BOS
3 stops30h 42m
Multiple Airlines
Deal found 1/14$932
This lastminute.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/53:05 pm
BOS
-
ROS
1 stop31h 15m
Copa Airlines
mié. 3/115:20 am
ROS
-
BOS
1 stop18h 50m
Copa Airlines
Deal found 1/14$1,127
This LATAM Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/106:40 am
BOS
-
ROS
2 stops33h 50m
LATAM Airlines
jue. 3/129:10 am
ROS
-
BOS
2 stops23h 25m
LATAM Airlines
Deal found 1/13$2,054

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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, Cheapflights users made 2,558,603 searches. Data last updated enero 15, 2026.
Use the filters below to find and compare flights from Boston to Rosario that are best for you.

Fly from

Boston

Fly to

Rosario

Route

Depart

Return

Price

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

jue. 3/5

7:44 am-1:25 pm

3 stops27h 41m

Rosario Fisherton

mié. 3/11

9:00 am-2:42 pm

3 stops30h 42m

$932

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

jue. 3/5

3:05 pm-12:20 am

1 stop31h 15m

Rosario Fisherton

mié. 3/11

5:20 am-11:10 pm

1 stop18h 50m

$1,127

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

mar. 3/10

6:40 am-5:30 pm

2 stops33h 50m

Rosario Fisherton

jue. 3/12

9:10 am-7:35 am

2 stops23h 25m

$2,054

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

mié. 2/4

5:53 pm-8:30 am

2 stops36h 37m

$619

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

mié. 2/4

7:31 am-12:20 am

1 stop14h 49m

$935

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Best time to book a flight from Boston to Rosario

Have a flexible travel schedule? Discover the best time to fly to Rosario from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Boston to Rosario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Rosario?

    For as low as $1,127, Copa Airlines can have you in Rosario from Boston in 31h 15m. Boston and Rosario are separated by a distance of 5237 mi.

  • Can I find deals for flights from Boston to Rosario that include hotel bookings?

    Yes. In addition to deals on Boston to Rosario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Rosario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Rosario.

  • Can I find deals for business class flights from Boston to Rosario?

    Yes. Cheapflights offers flight deals from Boston to Rosario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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