$380 Cheap Flights from Rock Springs (RKS) to Buffalo (BUF)

View $380 flight on Thu, Dec 25, 2025Opens in a new window

Popular airlines from Rock Springs, WY (RKS-Sweetwater County) to Buffalo Niagara Intl. Airport (BUF)

Cheap Flights from Rock Springs to Buffalo (RKS-BUF)

Prices were available within the past 7 days and start at $380 for one-way flights and $548 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Dec 25 - Mon, Jan 5
RKS
Rock Springs
BUF
Buffalo
$548 Roundtrip, found 2 days ago
$548
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Mon, Jan 5, priced at $548 found 2 days ago
United
Thu, Dec 25 - Wed, Dec 31
RKS
Rock Springs
BUF
Buffalo
$563 Roundtrip, found 2 days ago
$563
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Wed, Dec 31, priced at $563 found 2 days ago
United
Wed, Dec 24 - Mon, Jan 5
RKS
Rock Springs
BUF
Buffalo
$593 Roundtrip, found 2 days ago
$593
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 24 from Rock Springs to Buffalo, returning Mon, Jan 5, priced at $593 found 2 days ago
United
Wed, Dec 24 - Wed, Dec 31
RKS
Rock Springs
BUF
Buffalo
$608 Roundtrip, found 2 days ago
$608
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 24 from Rock Springs to Buffalo, returning Wed, Dec 31, priced at $608 found 2 days ago
United
Thu, Dec 25 - Thu, Jan 1
RKS
Rock Springs
BUF
Buffalo
$613 Roundtrip, found 2 days ago
$613
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Thu, Jan 1, priced at $613 found 2 days ago
United
Thu, Dec 25 - Sun, Jan 4
RKS
Rock Springs
BUF
Buffalo
$642 Roundtrip, found 2 days ago
$642
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Sun, Jan 4, priced at $642 found 2 days ago
United
Wed, Dec 24 - Thu, Jan 1
RKS
Rock Springs
BUF
Buffalo
$658 Roundtrip, found 2 days ago
$658
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 24 from Rock Springs to Buffalo, returning Thu, Jan 1, priced at $658 found 2 days ago
United
Sun, Dec 28 - Mon, Jan 5
RKS
Rock Springs
BUF
Buffalo
$662 Roundtrip, found 2 days ago
$662
Roundtrip
found 2 days ago
Select United flight, departing Sun, Dec 28 from Rock Springs to Buffalo, returning Mon, Jan 5, priced at $662 found 2 days ago
United
Thu, Dec 25 - Fri, Jan 2
RKS
Rock Springs
BUF
Buffalo
$664 Roundtrip, found 2 days ago
$664
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Fri, Jan 2, priced at $664 found 2 days ago
United
Thu, Dec 25 - Sat, Jan 3
RKS
Rock Springs
BUF
Buffalo
$669 Roundtrip, found 2 days ago
$669
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Rock Springs to Buffalo, returning Sat, Jan 3, priced at $669 found 2 days ago

Frequently asked questions

How much does a flight from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF) cost?
Lock in a cheap one-way flight from $380 or cheap return flight from $548 from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF)?
December is the cheapest month to fly from RKS to BUF. Timing your trip outside of the busy season is often the key to better flight prices.
What is the cheapest airline that flies from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest RKS to BUF flight.
How many flights per day from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF)?
Nonstop flights from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RKS to BUF?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on various factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF)?
To reach Buffalo Niagara Intl. Airport (BUF) without delays, select a flight that takes off from Sweetwater County Airport (RKS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Holding off until just before your trip to book a flight from RKS to BUF generally means paying more. While you may find some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule for the best chance of landing a bargain.
Is it cheaper to book a RKS to BUF flight and hotel package?
You can save money by booking a RKS to BUF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Sweetwater County Airport (RKS) to Buffalo Niagara Intl. Airport (BUF)?
It's generally possible to reschedule or cancel your RKS to BUF flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Sweetwater County
Destination airport
Buffalo Niagara Intl.
Roundtrip price
$548
Distance
1545 mi

Book with confidence

Rock Springs to Buffalo Flights

The cheapest times to fly from Rock Springs to Buffalo

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 Rock Springs to Buffalo are during the month of December. You can find some of the cheapest flights from Rock Springs to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rock Springs to Buffalo

Sunday is one of the best days to book for cheap flights from Rock Springs to Buffalo: 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 Rock Springs to Buffalo

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 Rock Springs to Buffalo in 2025. You can also book with separate airlines for your outbound and return journeys, from $380 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 Rock Springs to Buffalo 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 Rock Springs to Buffalo 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.

 

Rock Springs to Buffalo Flights

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*Available to One Key members.