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SEA to HIO: distance & flight time
Seattle (Seattle Tacoma International Airport) → Hillsboro (Portland Hillsboro Airport)
135 mi
218 km · 118 nm
49m
estimated nonstop flight time
Same time
time difference · heading south
See live SEA→HIO fares Phone-only fares on this route — call free
Flight time details
135 miles nonstop takes roughly 49m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- HIO — Portland Hillsboro Airport · Hillsboro, 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 HIO
- PDX · Portland International Airport17 mi away
- TTD · Portland Troutdale Airport27 mi away
- KLS · Southwest Washington Regional Airport40 mi away
- OTK · Tillamook Airport43 mi away
Frequently asked questions
How far is SEA from HIO?
The flight distance from Seattle (SEA) to Hillsboro (HIO) is 135 miles (218 km, 118 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to HIO?
A nonstop flight takes about 49m 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 SEA to HIO?
Nonstop service on SEA–HIO 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 49m nonstop estimate.
What is the cheapest way to fly from SEA to HIO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–HIO that never appear on search engines, with no booking fees.
Why are some SEA to HIO fares phone-only?
Consolidator contracts let us sell certain SEA–HIO 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.