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SEA to MDT: distance & flight time
Seattle (Seattle Tacoma International Airport) → Harrisburg (Harrisburg International Airport)
2,291 mi
3,687 km · 1,991 nm
4h 57m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→MDT fares Phone-only fares on this route — call free
Flight time details
2,291 miles nonstop takes roughly 4h 57m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- MDT — Harrisburg International Airport · Harrisburg, 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 SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Near MDT
Frequently asked questions
How far is SEA from MDT?
The flight distance from Seattle (SEA) to Harrisburg (MDT) is 2,291 miles (3,687 km, 1,991 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to MDT?
A nonstop flight takes about 4h 57m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Harrisburg?
Harrisburg is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to MDT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–MDT that never appear on search engines, with no booking fees.