DEN KDEN → SEA KSEA

Denver International Airport → Seattle–Tacoma International Airport

🇺🇸 Denver, US → 🇺🇸 Seattle, US

Departure Airport

Denver International Airport

ICAO Code:: KDEN
IATA Code:: DEN
City:: 🇺🇸 Denver
Country:: US
Elevation:: 5431 ft

Destination Airport

Seattle–Tacoma International Airport

ICAO Code:: KSEA
IATA Code:: SEA
City:: 🇺🇸 Seattle
Country:: US
Elevation:: 433 ft

6

Operators

31

Flights Spotted

1023

Miles

2h 23m

Flight Duration

Route Map

Operating Airlines

Delta Air Lines ICAO: DAL • IATA: DL

Southwest Airlines ICAO: SWA • IATA: WN

Alaska Airlines ICAO: ASA • IATA: AS

United Airlines ICAO: UAL • IATA: UA

Frontier Airlines ICAO: FFT • IATA: F9

Air Transport International ICAO: ATN • IATA: 8C

Airline	ICAO	IATA
Delta Air Lines	`DAL`	`DL`
Southwest Airlines	`SWA`	`WN`
Alaska Airlines	`ASA`	`AS`
United Airlines	`UAL`	`UA`
Frontier Airlines	`FFT`	`F9`
Air Transport International	`ATN`	`8C`

Flight Schedule Pattern

Day	Flights Observed	Frequency
Monday	4	13%
Tuesday	7	23%
Wednesday	2	6%
Thursday	6	19%
Friday	4	13%
Saturday	2	6%
Sunday	6	19%

Pattern Analysis

Based on 31 flight observations across all operators on this route.

Total Flights Observed: 31
Actual flights spotted on this route

Weekdays: 23 flights
Weekend: 8 flights

Business Route More active on weekdays

All Flight Routes

6 Routes

Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.

Airline	Aircraft Type	Typical Time	Flight Count	Days Active	Last Seen	Status
Alaska Airlines `ASA` / `AS`	B39M	19:33 7:33 PM (Representative)	6	M T W T F S S	Sep 8, 2025	Active
Air Transport International `ATN` / `8C`	B763	22:05 10:05 PM (Representative)	1	M T W T F S S	Aug 10, 2025	Active
Delta Air Lines `DAL` / `DL`	BCS1	19:59 7:59 PM (Representative)	12	M T W T F S S	Sep 9, 2025	Active
Frontier Airlines `FFT` / `F9`	A21N	21:36 9:36 PM (Representative)	1	M T W T F S S	Aug 10, 2025	Active
Southwest Airlines `SWA` / `WN`	B738	17:50 5:50 PM (Representative)	8	M T W T F S S	Sep 2, 2025	Active
United Airlines `UAL` / `UA`	A320	16:01 4:01 PM (Representative)	4	M T W T F S S	Aug 26, 2025	Active

Total Routes: 6

Active Routes: 6

Unique Airlines: 6

Aircraft Types: 6

Spotted Departure Times

Departure Time	Operator	ICAO	IATA
16:01 4:01 PM	United Airlines	`UAL`	`UA`
17:50 5:50 PM	Southwest Airlines	`SWA`	`WN`
19:33 7:33 PM	Alaska Airlines	`ASA`	`AS`
19:59 7:59 PM	Delta Air Lines	`DAL`	`DL`
21:36 9:36 PM	Frontier Airlines	`FFT`	`F9`
22:05 10:05 PM	Air Transport International	`ATN`	`8C`

Time Information

Times are shown in the departure airport's local timezone (KDEN - America/Denver).

Total Departure Times: 6

Time Range:
16:01 - 22:05

These are typical departure times observed from actual flights. Times may vary by season and schedule changes.