West - SEA- connection from Concourse B to South Satellite

Hi all, I have a pretty tight connection at Sea-Tac (just over an hour) between a Horizon Air flight from Wenatchee (EAT) to a Northwest flight to Amsterdam (AMS). Both were booked as KLM codeshares on the same reservation, so I should be able to check my luggage all the way through to Amsterdam.

It is my understanding that Horizon maintains gates in Concourse B as well as the South Satellite terminal, so I am wondering if I'd have to pass through security again if my first plane pulls into Concourse B. If I arrive into the South Satellite terminal, does anyone know how close the Horizon gates are in relation to Northwest's gates?

Thank you for your help! :cool:

p.s. On the return trip I'm terminating in Seattle so I thankfully won't have to deal with a connecting flight in addition to customs.

All gates at SEA are connected inside security. If you are flying EAT-SEA, you are going to land at the C concourse 90% of the time, and at the South Satellite the rest of the time. Horizon used to use one gate in the B concourse, but I haven't landed there in a few years and I fly this route all the time. If you land at the C concourse, you'll need to take the train to the south satellite. Just walk towards the A concourse and you'll see the signs on the left. By the way, the flight time from EAT-SEA is almost always an overestimation. The flight takes around 25 minutes, but the schedule usually says 40. An hour should be plenty of time. The south satellite isn't very big, you won't have any trouble finding your gate.

Hi all, I have a pretty tight connection at Sea-Tac (just over an hour) between a Horizon Air flight from Wenatchee (EAT) to a Northwest flight to Amsterdam (AMS). Both were booked as KLM codeshares on the same reservation, so I should be able to check my luggage all the way through to Amsterdam.

It is my understanding that Horizon maintains gates in Concourse B as well as the South Satellite terminal, so I am wondering if I'd have to pass through security again if my first plane pulls into Concourse B. If I arrive into the South Satellite terminal, does anyone know how close the Horizon gates are in relation to Northwest's gates?

Thank you for your help! :cool:

p.s. On the return trip I'm terminating in Seattle so I thankfully won't have to deal with a connecting flight in addition to customs.

Horizon flights can come to B, C or the South Satellite (although I think only international flights from Canada actually arrive at the satellite.) Whichever, getting to your departure gate is no problem - look for signs for the train to the South Satellite. No security, and all the gates in the South Satellite are within a couple minutes' walk of the escalators/lifts up from the train station.

Thank you both for your responses, very helpful stuff :)