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WYS to SDY: distance & flight time
West Yellowstone (Yellowstone Airport) → Sidney (Sidney - Richland Regional Airport)
391 mi
630 km · 340 nm
1h 30m
estimated nonstop flight time
Same time
time difference · heading northeast
See live WYS→SDY fares Phone-only fares on this route — call free
Flight time details
391 miles nonstop takes roughly 1h 30m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- WYS — Yellowstone Airport · West Yellowstone, United States
- SDY — Sidney - Richland Regional Airport · Sidney, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near WYS
- BZN · Gallatin Field75 mi away
- JAC · Jackson Hole Airport77 mi away
- LVM · Mission Field77 mi away
- IDA · Idaho Falls Regional Airport94 mi away
Near SDY
- ISN · Sloulin Field International Airport41 mi away
- GDV · Dawson Community Airport49 mi away
- OLF · L M Clayton Airport69 mi away
- DIK · Dickinson Theodore Roosevelt Regional Airport91 mi away
Frequently asked questions
How far is WYS from SDY?
The flight distance from West Yellowstone (WYS) to Sidney (SDY) is 391 miles (630 km, 340 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WYS to SDY?
A nonstop flight takes about 1h 30m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from WYS to SDY?
Nonstop service on WYS–SDY depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 30m nonstop estimate.
What is the cheapest way to fly from WYS to SDY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WYS–SDY that never appear on search engines, with no booking fees.
Why are some WYS to SDY fares phone-only?
Consolidator contracts let us sell certain WYS–SDY tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.