A twin engine business jet parked nose out in a lit hangar at dusk with the air stair lowered and the taxiway beyond

KBFI to KSUN 414 nm ESE 123 degrees true

Private JetCharter Seattleto Sun Valley

414 nautical miles direct. About 1h 24m nonstop in a very light jet. Operators bid on this leg without knowing who is flying it.

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Great circle

414nm

767 km, 477 statute miles

Initial track

123°T ESE

Departing KBFI toward KSUN

Nonstop block time

1h 24m

In a very light jet, the smallest reference class that flies it nonstop

Clock change

+1h

Sun Valley against Seattle, year round

The leg

Seattle to Sun Valley

The great circle track from Seattle to Sun Valley runs 414 nautical miles on an initial heading of 123 degrees true. A very light jet covers it nonstop in roughly 1h 24m, before winds.

At this length the aircraft reaches a settled cruise and the class differences start to show up on the clock, though not dramatically. The bigger separation is cabin comfort and baggage volume. Sun Valley runs 1 hour ahead of Seattle year round, which is worth building into the schedule at both ends.

The smallest aircraft that clears this leg nonstop with real margin is the Embraer Phenom 100EV, a very light jet.

Book range figures assume long range cruise, standard reserves and a stated payload. Load the cabin, add bags, put the departure field at elevation on a hot afternoon, and the real number comes down. We treat anything above roughly 80 percent of book range as a leg that needs the operator to confirm against the specific tail number rather than the brochure.

Orthographic projection, great circle track Static plot

Aircraft

What flies this leg, and how fast

Block time and nonstop capability across the classes for 414 nautical miles. Times are planning estimates in still air.

Aircraft comparison for Seattle to Sun Valley
Aircraft	Class	Seats	Block time	Book range	This leg
Cessna Citation M2 Gen2	Very Light Jet	6	1h 24m	1,550 nm	Nonstop
Embraer Phenom 300E	Light Jet	8	1h 16m	2,010 nm	Nonstop
Cessna Citation XLS+	Midsize Jet	9	1h 18m	2,100 nm	Nonstop
Bombardier Challenger 350	Super Midsize Jet	9	1h 15m	3,200 nm	Nonstop
Gulfstream G450	Heavy Jet	13	1h 14m	4,350 nm	Nonstop
Gulfstream G650ER	Ultra Long Range Jet	14	1h 13m	7,500 nm	Nonstop

Airports

Which runway you actually use

Departing Seattle. Most charter traffic uses Boeing Field King County (KBFI / BFI). The credible alternates are Seattle Tacoma International (SEA) and Paine Field (PAE). Which one you leave from is worth deciding on ground time rather than on the map, because twenty minutes of extra driving often buys a cheaper ramp and a faster departure.

Arriving Sun Valley. Most charter traffic uses Friedman Memorial (KSUN / SUN). The credible alternates are Magic Valley Regional (TWF) and Boise Air Terminal (BOI). Pick the one closest to where you are actually going. The airport with the famous name is frequently the wrong answer.

Friedman Memorial sits in a valley with terrain on three sides and diversions to Twin Falls are common in poor visibility.

Runway length, ramp space and operating hours at the arrival field decide the aircraft as often as range does. Have the operator confirm all three against the tail number they are offering.

Airport	ICAO	IATA	Metro	End	Role
Boeing Field King County	KBFI	BFI	Seattle	Departure	Preferred
Seattle Tacoma International	KSEA	SEA	Seattle	Departure	Customs
Paine Field	KPAE	PAE	Seattle	Departure	Alternate
Friedman Memorial	KSUN	SUN	Sun Valley	Arrival	Preferred
Magic Valley Regional	KTWF	TWF	Sun Valley	Arrival	Alternate
Boise Air Terminal	KBOI	BOI	Sun Valley	Arrival	Alternate

Cost

What moves the number

The honest answer to what this costs is that it depends, so here is precisely what it depends on.

Positioning. Where the aircraft sits when you call. If it is already on your departure ramp you pay for your legs only. If it has to fly in empty and fly home afterwards, someone pays for that, and it is you.
Daily minimum. Most operators bill a minimum number of flight hours per day the aircraft is away. A short leg with a three night stay can price higher than a long leg that returns the same day.
Crew duty. A crew has a legal duty limit. Cross enough time zones or depart late enough and the trip needs a second crew or an overnight, and both cost money.
Ramp and handling. Landing fees, ramp fees, overnight parking and the FBO handling charge vary enormously between fields in the same metro.
Peak days. Operators apply surcharges around the predictable weekends. Thanksgiving Sunday, the Super Bowl, Art Basel, the Fourth of July and the ski season change of week all price differently.
De-icing. Winter departures from northern fields add de-icing, which is charged by volume of fluid and can be a serious number on a large aircraft.
Federal excise tax. Domestic United States charter carries a federal excise tax plus segment fees. It is a real line and it belongs in any quote you are comparing.

Our fee sits on top of the operator price as its own line, visible, so you can see both halves. Send the trip and the operators bid against each other on all of the above at once.

Timing

Season, weather and the clock

Mountain fields are the ones that reward planning. High elevation cuts engine performance, summer heat cuts it further, and the combination reduces how much weight the aircraft can lift. Winter brings snow closures and de-icing. Both seasons can change which aircraft the operator will put on the trip.

A business jet parked on an airport ramp at sunrise, backlit, with the nose gear and forward fuselage in the foreground — BFI to SUN

Questions

BFI to SUN

The forward fuselage and cockpit of a business jet in silhouette on the ramp at dusk, with runway edge lights and a pink and blue horizon behind — Representative cabin and ramp

How long is a private jet flight from Seattle to Sun Valley?

The great circle distance is 414 nautical miles, which is about 767 km. A very light jet covers it nonstop in roughly 1h 24m block to block. A heavy jet flies the distance in about 1h 14m, and a light jet in about 1h 16m if it can make it without stopping. These are planning estimates in still air and exclude winds and air traffic routing.

Can a light jet fly Seattle to Sun Valley nonstop?

Yes. A Embraer Phenom 300E covers this leg nonstop with comfortable margin, using about 21 percent of its published range. That is inside the band where a full cabin and average winds will not force a stop.

Which airport should I use in Sun Valley?

Friedman Memorial (KSUN) handles most charter traffic. The alternates are Magic Valley Regional (TWF) and Boise Air Terminal (BOI). Choose on ground time to your final address rather than on the name you recognise. Friedman Memorial sits in a valley with terrain on three sides and diversions to Twin Falls are common in poor visibility.

What does a private jet from Seattle to Sun Valley cost?

We do not publish a figure, because a fixed number for this route would be invented. The dominant variable is where the aircraft is parked when you call, not the aircraft type. Positioning legs, daily minimums, crew duty, ramp fees, peak day surcharges and taxes all move the total. Send the trip through the quote form and certificated operators bid against each other on it, sealed, without knowing who you are.

Are empty legs available on this route?

Sometimes. An empty leg exists when an operator has to reposition an aircraft along this track anyway, so the timing is theirs and not yours. They appear and vanish with little notice and get cancelled when the paying trip behind them changes. Flag empty legs on the quote form and we will include any that fit your window, but do not build a fixed commitment around one.

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