The observed direct connection between Roberts Field (RDM) and Seattle–Tacoma International Airport (SEA) covers approximately 227 mi. The estimated flight time is around 55m. Alaska Airlines, Horizon Air and SkyWest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
How far is Redmond from Seattle by air?
The great-circle distance between Roberts Field and Seattle–Tacoma International Airport is approximately 227 mi.
How long is the flight from Redmond to Seattle?
Based on the distance, the estimated flight time is about 55m. This is an estimate, not a schedule.
Is there a direct connection from Redmond to Seattle?
Yes, a direct connection between RDM and SEA has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Alaska Airlines, Horizon Air and SkyWest Airlines.
How often is there a flight from Redmond to Seattle?
On average around 7 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,457 observed flights. Mainly SkyWest Airlines, Horizon Air, Alaska Airlines. That is an observation, not a timetable.
What is the current time difference between Redmond and Seattle?
Same local time in Redmond and Seattle.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.