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TCM to ISN: distance & flight time
Tacoma (McChord Air Force Base) → Williston (Sloulin Field International Airport)
877 mi
1,412 km · 762 nm
2h 22m
estimated nonstop flight time
+2h
time difference · heading east
See live TCM→ISN fares Phone-only fares on this route — call free
Flight time details
877 miles nonstop takes roughly 2h 22m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- TCM — McChord Air Force Base · Tacoma, United States
- ISN — Sloulin Field International Airport · Williston, 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 TCM
- SEA · Seattle Tacoma International Airport23 mi away
- GRF · Gray Army Air Field6 mi away
- TIW · Tacoma Narrows Airport10 mi away
- OLM · Olympia Regional Airport23 mi away
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
Frequently asked questions
How far is TCM from ISN?
The flight distance from Tacoma (TCM) to Williston (ISN) is 877 miles (1,412 km, 762 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TCM to ISN?
A nonstop flight takes about 2h 22m 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 TCM to ISN?
Nonstop service on TCM–ISN 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 2h 22m nonstop estimate.
What is the time difference between Tacoma and Williston?
Williston is 2 hours ahead of Tacoma.
What is the cheapest way to fly from TCM to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TCM–ISN that never appear on search engines, with no booking fees.
Why are some TCM to ISN fares phone-only?
Consolidator contracts let us sell certain TCM–ISN 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.