$854+ Cheap flights from Newark (EWR) 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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ROS
Jan 27 — Feb 31
1 adult, Economy
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Find cheap flights from Newark to Rosario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Newark to Rosario
Cheapest flights from Newark to RosarioExplore the most affordable flight options available from Newark to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.
Explore the most affordable flight options available from Newark to Rosario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.
This Mytrip deal was found by Cheapflights users on 12/27. 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.
Tue 12/306:55 pmEWR - ROS
2 stops29h 05mMultiple Airlines
Mon 1/57:50 pmROS - EWR
2 stops19h 54mMultiple Airlines
Deal found 12/27![Multiple Airlines logo]()
$2,573
This Booking.com deal was found by Cheapflights users on 12/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:30 pmEWR - ROS
2 stops31h 30mMultiple Airlines
Mon 1/54:10 amROS - EWR
2 stops37h 33mMultiple Airlines
Deal found 12/27![Multiple Airlines logo]()
$6,965
Find flight deals from Newark to Rosario
Discover tips and strategies to find the most affordable flight options for your journey from Newark (EWR) 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 December 28, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $854 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Newark 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 December 28, 2025.
Use the filters below to find and compare flights from Newark Airport to Rosario that are best for you.
Fly from
Newark
Fly to
Rosario
Route
Depart
Return
Price
NewarkRosario
EWR - ROS
EWRROS
Newark
Sat 6/20
12:00 pm-2:23 am
1 stop13h 23m
Rosario Fisherton
Mon 7/27
7:35 pm-11:30 pm
2 stops28h 55m
$854
NewarkRosario
EWR - ROS
EWRROS
Newark
Tue 2/10
6:29 pm-2:00 am
2 stops29h 31m
Rosario Fisherton
Mon 2/16
2:55 am-11:59 am
2 stops35h 04m
$2,037
NewarkRosario
EWR - ROS
EWRROS
Newark
Tue 2/10
9:05 am-8:30 am
3 stops45h 25m
Rosario Fisherton
Tue 2/17
8:15 pm-5:04 pm
3 stops22h 49m
$2,184
Compare providers for flights from Newark to Rosario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Newark to Rosario in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Newark Airport-Rosario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Newark Airport-Rosario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Newark Airport-Rosario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Newark Airport-Rosario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Newark Airport-Rosario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Newark to Rosario
Have a flexible travel schedule? Discover the best time to fly to Rosario from Newark 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.