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AST to SDY: distance & flight time
Astoria (Astoria Regional Airport) → Sidney (Sidney - Richland Regional Airport)
932 mi
1,501 km · 810 nm
2h 30m
estimated nonstop flight time
+1h
time difference · heading east
See live AST→SDY fares Phone-only fares on this route — call free
Flight time details
932 miles nonstop takes roughly 2h 30m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- AST — Astoria Regional Airport · Astoria, 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 AST
- KLS · Southwest Washington Regional Airport47 mi away
- OTK · Tillamook Airport51 mi away
- HQM · Bowerman Airport56 mi away
- CLS · Chehalis Centralia Airport56 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 AST from SDY?
The flight distance from Astoria (AST) to Sidney (SDY) is 932 miles (1,501 km, 810 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from AST to SDY?
A nonstop flight takes about 2h 30m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Astoria and Sidney?
Sidney is 1 hour ahead of Astoria.
What is the cheapest way to fly from AST to SDY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on AST–SDY that never appear on search engines, with no booking fees.