# Distance between Seattle, WA (BFI) and St Augustine, FL (UST)

Flight distance from Seattle to St Augustine (Seattle Boeing Field – Northeast Florida Regional Airport) is 2484 miles / 3997 kilometers / 2158 nautical miles. Estimated flight time is 5 hours 12 minutes.

Driving distance from Seattle (BFI) to St Augustine (UST) is 3037 miles / 4888 kilometers and travel time by car is about 50 hours 45 minutes.

## Map of flight path and driving directions from Seattle to St Augustine.

Shortest flight path between Seattle Boeing Field (BFI) and Northeast Florida Regional Airport (UST).

## How far is St Augustine from Seattle?

There are several ways to calculate distances between Seattle and St Augustine. Here are two common methods:

Vincenty's formula (applied above)
• 2483.601 miles
• 3996.968 kilometers
• 2158.190 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
• 2480.014 miles
• 3991.196 kilometers
• 2155.074 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

## Airport information

A Seattle Boeing Field
City: Seattle, WA
Country: United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

B Northeast Florida Regional Airport
City: St Augustine, FL
Country: United States
IATA Code: UST
ICAO Code: KSGJ
Coordinates: 29°57′33″N, 81°20′23″W

## Time difference and current local times

The time difference between Seattle and St Augustine is 3 hours. St Augustine is 3 hours ahead of Seattle.

PDT

EDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 273 kg (602 pounds).

## Frequent Flyer Miles Calculator

Seattle (BFI) → St Augustine (UST).

Distance:
2484
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
2484

Round trip?