Vuelos de Alaska Airlines de Seattle (SEA) a Denver (DEN) desde $89

Make sure you check out our Covid-19 Travel Advisor to find out if there are any current travel advice reports or quarantine requirements in place in Denver Airport when jet-setting from Sea-Tac Airport.

While it’s hard to say which terminal your Alaska Airlines flight from Sea-Tac Airport to Denver Airport will depart from, we can tell you that it’s likely you’ll be jumping off the plane at the main terminal.

If you need to get from Sea-Tac Airport to DEN and prefer a direct flight, Alaska Airlines has you covered. Book your seat now and you’ll be touching down at your destination in next to no time.

No unpleasant jet lag, no legs craving a stretch — there’s a whole lot to love about short flights. If you’ve reserved a seat with Alaska Airlines from SEA to DEN, the plane ride will fly by in around 3 hours and 47 minutes.

Alaska Airlines often uses the Boeing 737-900 or the Boeing 737 MAX 9 on the flight path between SEA and DIA airport.

Alaska Airlines offers around 4 flights every day from Sea-Tac Airport to Denver Intl. Airport (DEN).

For more info about changing your flight to DIA 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.