$99 Cheap Delta flights from Redmond to Seattle (RDM to SEA)

For any current Sea-Tac Airport quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught up.

If you’re flying from RDM to SEA with Delta Air Lines, you’re likely to be departing from the main terminal. Your airline should be able to tell you exactly which terminal you’ll be arriving at.

If you’re going from Roberts Field to Sea-Tac Airport and prefer a direct flight, Delta Air Lines can help. Book your flight now and you’ll be landing at the other end in next to no time.

Your Delta Air Lines flight will get you from Roberts Field to SEA in roughly 2 hours and 46 minutes. If you’re not a big fan of chatting to fellow passengers mid-flight, don’t fret — you won’t have to natter for too long.

If you’re on your way from RDM to SEA with Delta Air Lines, you’re likely to be cruising aboard the Embraer 175.

If you need to book a jaunt from RDM to SEA, you can pick from 2 Delta Air Lines flights daily.

For more info about changing your flight to Sea-Tac Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.