Need help booking?
Unpublished phone-only deals available
SAY to HDN: distance & flight time
Siena (Siena-Ampugnano Airport) → Hayden (Yampa Valley Airport)
5,499 mi
8,849 km · 4,778 nm
11h 15m
estimated nonstop flight time
-8h
time difference · heading northwest
See live SAY→HDN fares Phone-only fares on this route — call free
Flight time details
5,499 miles nonstop takes roughly 11h 15m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- SAY — Siena-Ampugnano Airport · Siena, Italy
- HDN — Yampa Valley Airport · Hayden, 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 SAY
- GRS · Grosseto Air Base36 mi away
- FLR · Peretola Airport38 mi away
- PSA · Pisa International Airport52 mi away
- EBA · Marina Di Campo Airport62 mi away
Near HDN
- SBS · Steamboat Springs Bob Adams Field19 mi away
- EGE · Eagle County Regional Airport60 mi away
- SAA · Shively Field70 mi away
- RIL · Garfield County Regional Airport71 mi away
Frequently asked questions
How far is SAY from HDN?
The flight distance from Siena (SAY) to Hayden (HDN) is 5,499 miles (8,849 km, 4,778 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SAY to HDN?
A nonstop flight takes about 11h 15m 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 Siena and Hayden?
Hayden is 8 hours behind Siena.
What is the cheapest way to fly from SAY to HDN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SAY–HDN that never appear on search engines, with no booking fees.