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ISN to SPG: distance & flight time
Williston (Sloulin Field International Airport) → St. Petersburg (Albert Whitted Airport)
1,804 mi
2,903 km · 1,568 nm
4h
estimated nonstop flight time
+1h
time difference · heading southeast
See live ISN→SPG fares Phone-only fares on this route — call free
Flight time details
1,804 miles nonstop takes roughly 4h gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- SPG — Albert Whitted Airport · St. Petersburg, 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 ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Near SPG
- TPA · Tampa International Airport16 mi away
- MCF · Mac Dill Air Force Base9 mi away
- PIE · St Petersburg Clearwater International Airport11 mi away
- TPF · Peter O Knight Airport15 mi away
Frequently asked questions
How far is ISN from SPG?
The flight distance from Williston (ISN) to St. Petersburg (SPG) is 1,804 miles (2,903 km, 1,568 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to SPG?
A nonstop flight takes about 4h gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ISN to SPG?
Nonstop service on ISN–SPG depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 4h nonstop estimate.
What is the time difference between Williston and St. Petersburg?
St. Petersburg is 1 hour ahead of Williston.
What is the cheapest way to fly from ISN to SPG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–SPG that never appear on search engines, with no booking fees.
Why are some ISN to SPG fares phone-only?
Consolidator contracts let us sell certain ISN–SPG tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.