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Rosario

$998+ Cheap flights from Boston (BOS) to Rosario (ROS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ROS
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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Find flight deals from Boston to Rosario

Best flights from Boston to Rosario
Discover carefully curated flight deals from Boston to Rosario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 12, 2025.

This KAYAK deal was found by Cheapflights users on 11/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:55 amBOS - ROS
2 stops38h 45mLATAM Airlines
Wed 3/187:45 amROS - BOS
2 stops27h 39mLATAM Airlines
Deal found 11/9$998
This Copa Airlines deal was found by Cheapflights users on 11/9. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:44 amBOS - ROS
1 stop14h 36mCopa Airlines
Tue 3/171:26 amROS - BOS
1 stop22h 44mCopa Airlines
Deal found 11/9$1,598
This KAYAK deal was found by Cheapflights users on 11/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/17:45 amBOS - ROS
2 stops20h 25mLATAM Airlines
Sat 1/172:45 amROS - BOS
2 stops22h 14mLATAM Airlines
Deal found 11/11$1,509

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 November 12, 2025.

Round-trip from

$998
(KAYAK)
From Boston Logan Intl to Rosario Fisherton
Search Deals

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 November 12, 2025.
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

Wed 3/11

9:55 am-1:40 am

2 stops38h 45m

Rosario Fisherton

Wed 3/18

7:45 am-10:24 am

2 stops27h 39m

$998

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

Thu 1/1

7:45 am-6:10 am

2 stops20h 25m

Rosario Fisherton

Sat 1/17

2:45 am-10:59 pm

2 stops22h 14m

$1,509

BostonRosario

BOS - ROS

BOSROS

Boston Logan Intl

Wed 3/11

8:44 am-12:20 am

1 stop14h 36m

Rosario Fisherton

Tue 3/17

1:26 am-11:10 pm

1 stop22h 44m

$1,598

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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 $1,598, LATAM Airlines can have you in Rosario from Boston in 14h 36m. Boston and Rosario are separated by a distance of 5237 mi. This flight may include one or multiple stops.

  • 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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