BFI → SUN
About 414 nautical miles, roughly 1h 52m – 2h 09m in a turboprop jet. Here is the honest version of that trip.
Distance
414 nm
Great-circle direct
Estimated flight time
1h 52m – 2h 09m
Turboprops, including taxi
Recommended
Turboprops
6–8 passengers
Nonstop
Yes
With a full cabin
Estimates are computed from great-circle distance, published cruise speeds, and modeled allowances for routing, climb, descent and prevailing winds — the same engine the configurator uses. They are ranges rather than single numbers because weather and air traffic control do not deal in single numbers. Party size assumed: six.
Aircraft
Each of these covers the routing nonstop with the cabin filled — checked against realistic full-cabin range, not a manufacturer headline.
1h 52m – 2h 09m
The better-suited option on a leg this short. It is built for the profile, and it gets into shorter fields than a jet will take.
1h 24m – 1h 37m
More cabin, more baggage and a faster cruise. Worth the additional hours if the flight is long or the party is traveling heavy.
Departing Seattle
Boeing Field is five miles from downtown Seattle and is where the city’s private aviation happens. It takes anything, it is genuinely close in, and it avoids Sea-Tac entirely.
Arriving Sun Valley
Friedman Memorial serves Sun Valley and Ketchum, and it is one of the more demanding fields in the mountain west — a single approach in a valley, with weather that closes it more often than visitors expect.
SUN has terrain-driven approach limitations and diverts to Twin Falls with some regularity in winter. Anyone quoting this field without mentioning that is not being straight with you.
Flying Seattle to Sun Valley more than a few times a year? The Velocity Jet Card fixes the terms in advance — or see how a card compares with charter, fractional and ownership, including where a card is the wrong answer.
The Jet Configurator
The configurator checks routed distance against realistic full-cabin range, so it will never recommend an aircraft that cannot actually make the trip with everyone aboard.
Your trip
We will come back personally with real availability and a real number — not an auto-generated quote. Every inquiry is answered personally — 24/7, and we come back to you right away.
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Questions
Approximately 1h 52m – 2h 09m in a turboprop jet, over about 414 nautical miles direct. That is an estimated range including taxi time — winds and routing move it either way, and westbound legs typically run longer than eastbound.
For six passengers, a turboprop jet — Beechcraft King Air 350i or a Cessna Grand Caravan EX — covers this route nonstop and uses the fewest hours doing it. A light gives you more cabin and a faster cruise at around 1h 24m – 1h 37m.
We typically use Boeing Field / King County International Airport (BFI) for Seattle and Friedman Memorial Airport (SUN) for Sun Valley. Alternatives are available at both ends and are sometimes the better answer depending on where you are actually going.
We do not publish charter prices, because a price without live operator availability behind it is a guess rather than a quote. Tell us the date and party size and you will have a real number, usually the same day.
No published price, because a price without live availability behind it is a guess. Tell us the date and the party and we will come back with a real number — every inquiry is answered personally — 24/7, and we come back to you right away.
Every inquiry is answered personally — 24/7, and we come back to you right away.
The Velocity concierge · answers day or night
Velocity AI does not quote prices or confirm availability — those come from a person, on 866-575-JETS, 24/7.