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SAY to WBU: distance & flight time
Siena (Siena-Ampugnano Airport) → Boulder (Boulder Municipal Airport)
5,453 mi
8,775 km · 4,738 nm
11h 9m
estimated nonstop flight time
-8h
time difference · heading northwest
See live SAY→WBU fares Phone-only fares on this route — call free
Flight time details
5,453 miles nonstop takes roughly 11h 9m 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
- WBU — Boulder Municipal Airport · Boulder, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Frequently asked questions
How far is SAY from WBU?
The flight distance from Siena (SAY) to Boulder (WBU) is 5,453 miles (8,775 km, 4,738 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SAY to WBU?
A nonstop flight takes about 11h 9m 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 Boulder?
Boulder is 8 hours behind Siena.
What is the cheapest way to fly from SAY to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SAY–WBU that never appear on search engines, with no booking fees.