Which airline flies the most flights to RKS? The top airline carrier flying out of Sweetwater County is United Airlines and they fly over 160 flights every month.
- United - Rock Springs (RKS) to Frankfurt (FRA) on 11/21 leaving at 4:45 am and returning on 11/25 at 7:05 pm for only $3,073 per person.*
*Prices vary and will be updated when you view current flight availability results. Deals displayed here are based on flight pricing and availability as of 11/16/2017 and may change as you get closer to the actual flight date. Deals displayed whose dates are in the past are no longer valid.