SEA to DEN (Seattle to Denver) Flights

Last Minute Flights from SEA to DEN

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
SEADenverAugust 3 to August 7$168
*Prices include taxes and fees

Cheapest SEA to DEN Flights

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
SEADenverOctober 1 to October 1$68
SEADenverOctober 2 to October 2$151
SEADenverNovember 19 to November 19$152
PAEDenverSeptember 9 to September 17$337
*Prices include taxes and fees
SEA to DEN Flight Details
Origin airport
Seattle - Tacoma Intl.
Origin airport IATA code
SEA
Destination airport
Denver Intl.
Destination airport IATA code
DEN
Distance
1022 mi

Frequently asked questions

What airlines fly direct from Sea-Tac Airport to DIA airport?
If you want to travel from SEA to Denver Intl. Airport (DEN) without switching planes, reserve your seat with any of these popular airlines:

  • United Airlines (UA)
  • Alaska Airlines (AS)
  • Delta Air Lines (DL)
  • Frontier Airlines (F9)

How many flights are there from SEA to DEN?
No less than 18 services operate every day between Seattle, WA (SEA-Seattle - Tacoma Intl.) and Denver, CO (DEN-Denver Intl.). Fasten your seat belt because your plane to Denver is ready to take off.
What is the flight distance from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Denver, CO (DEN-Denver Intl.)?
At a distance of 1,000 miles (1,650 1), you’ll be in the air for a while during this medium-haul flight. Prefer legroom? Pick an aisle seat. Otherwise, sit at the window and take in the landscapes between SeaTac and Denver.
How many morning flights are there from SEA to DEN?
If you’re an early riser, you get to choose from 50 morning flights from SEA to DEN every week.

  • Jet off with Alaska Airlines (AS). It has 14 weekly flights with morning departures. The earliest one leaves at 6:09AM.
  • United Airlines (UA) has 14 morning flights every week. The earliest time you can take to the skies with this carrier is 5:00AM.

How many afternoon flights are there from SEA to DEN?
Select from one of the 77 afternoon and evening flights from SEA to DEN each week and forget about early morning starts.

  • United Airlines (UA) operates 25 flights every week departing after midday. The first one leaves the runway at 12:40PM.
  • Delta Air Lines (DL) is another great option, offering 14 afternoon and evening flights every week. The earliest leaves the runway at 1:55PM.

What is the earliest departure time out of SeaTac to Denver?
5:00AM is the earliest scheduled flight taking off from SEA, touching down at DEN at 7:44AM. Save valuable time in the morning by having your suitcase zipped up and ready to be thrown in the boot.
What is the latest departure time out of SeaTac to Denver?
From SEA, the last flight jets off at 10:34PM and arrives at 1:21AM at DEN. If you’re not a big fan of early starts, this is the flight to catch.
What is the average price from SeaTac to Denver?
On average, the cheapest price for round-trip flights from SEA to DEN is $68. Walk away with your own bargain by securing your tickets soon. This price was available on Flights.com within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.