$337 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Rock Springs (RKS)

View $337 flight on Tue, Jul 22, 2025Opens in a new window

Popular airlines from Newark Liberty Intl. Airport (EWR) to Rock Springs, WY (RKS-Sweetwater County)

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Cheap Flights from Newark Liberty Intl. Airport to Rock Springs (EWR-RKS)

Prices were available within the past 7 days and start at $337 for one-way flights and $368 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 23 - Tue, Sep 30
EWR
New York
RKS
Rock Springs
$368 Roundtrip, found 14 hours ago
$368
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Sep 23 from New York to Rock Springs, returning Tue, Sep 30, priced at $368 found 14 hours ago
United
Tue, Sep 23 - Sat, Oct 4
EWR
New York
RKS
Rock Springs
$393 Roundtrip, found 14 hours ago
$393
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Sep 23 from New York to Rock Springs, returning Sat, Oct 4, priced at $393 found 14 hours ago
United
Sat, Sep 20 - Sat, Oct 4
EWR
New York
RKS
Rock Springs
$418 Roundtrip, found 14 hours ago
$418
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Sep 20 from New York to Rock Springs, returning Sat, Oct 4, priced at $418 found 14 hours ago
United
Wed, Oct 1 - Mon, Oct 20
EWR
New York
RKS
Rock Springs
$433 Roundtrip, found 5 days ago
$433
Roundtrip
found 5 days ago
Select United flight, departing Wed, Oct 1 from New York to Rock Springs, returning Mon, Oct 20, priced at $433 found 5 days ago
United
Tue, Oct 7 - Thu, Oct 23
EWR
New York
RKS
Rock Springs
$437 Roundtrip, found 5 days ago
$437
Roundtrip
found 5 days ago
Select United flight, departing Tue, Oct 7 from New York to Rock Springs, returning Thu, Oct 23, priced at $437 found 5 days ago
United
Fri, Nov 21 - Sun, Dec 7
EWR
New York
RKS
Rock Springs
$458 Roundtrip, found 5 days ago
$458
Roundtrip
found 5 days ago
Select United flight, departing Fri, Nov 21 from New York to Rock Springs, returning Sun, Dec 7, priced at $458 found 5 days ago
United
Fri, Oct 3 - Thu, Oct 23
EWR
New York
RKS
Rock Springs
$462 Roundtrip, found 5 days ago
$462
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 3 from New York to Rock Springs, returning Thu, Oct 23, priced at $462 found 5 days ago
United
Mon, Aug 4 - Mon, Aug 18
EWR
New York
RKS
Rock Springs
$465 Roundtrip, found 4 days ago
$465
Roundtrip
found 4 days ago
Select United flight, departing Mon, Aug 4 from New York to Rock Springs, returning Mon, Aug 18, priced at $465 found 4 days ago
United
Fri, Sep 26 - Tue, Sep 30
EWR
New York
RKS
Rock Springs
$468 Roundtrip, found 14 hours ago
$468
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Sep 26 from New York to Rock Springs, returning Tue, Sep 30, priced at $468 found 14 hours ago
United
Wed, Sep 3 - Thu, Sep 18
EWR
New York
RKS
Rock Springs
$472 Roundtrip, found 6 days ago
$472
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 3 from New York to Rock Springs, returning Thu, Sep 18, priced at $472 found 6 days ago
Flights from Newark Liberty Intl. Airport (EWR) to Rock Springs (RKS)
Origin airport
Newark Liberty Intl. Airport
Destination airport
Sweetwater County
Airlines serving
United
Roundtrip price
$368
Distance
1804 mi

Newark Liberty Intl. Airport to Rock Springs Flights

The cheapest times to fly from Newark Liberty Intl. Airport to Rock Springs

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Newark Liberty Intl. Airport to Rock Springs are during the month of September. You can find some of the cheapest flights from Newark Liberty Intl. Airport to Rock Springs with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Newark Liberty Intl. Airport to Rock Springs

Sunday is one of the best days to book for cheap flights from Newark Liberty Intl. Airport to Rock Springs: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Newark Liberty Intl. Airport to Rock Springs

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Newark Liberty Intl. Airport to Rock Springs in 2025. You can also book with separate airlines for your outbound and return journeys, from $337 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Newark Liberty Intl. Airport to Rock Springs flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Newark Liberty Intl. Airport to Rock Springs airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS) cost?
Discover the latest flight deals from EWR to RKS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from EWR to RKS?
The cheapest flights from EWR to RKS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from EWR to RKS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from EWR to RKS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS)?
There aren't any daily nonstop flights from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from EWR to RKS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS)?
To touch down at Sweetwater County Airport (RKS) without delays, book a flight that leaves Liberty Intl. Airport (EWR) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS) last-minute?
Last-minute bookings from EWR to RKS are typically more expensive. To secure the best rates, start looking for flights well ahead of time. That said, if you're flexible with your travel plans, you may score a cheap fare just before your departure.
Is it cheaper to book an EWR to RKS flight and hotel package?
Securing an EWR to RKS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Liberty Intl. Airport (EWR) to Sweetwater County Airport (RKS)?
If you booked your EWR to RKS flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.