Flights from Denver to Seattle

DENSEA

Denver International Airport (Denver, United States) → Seattle–Tacoma International Airport (Seattle, United States)

Nonstop
3h 2m
Distance
1,645 km
Frequency
7×/week
One-way from
$119
Airlines
Alaska Airlines, ATI, Delta Air Lines, Frontier Airlines, Southwest Airlines, United Airlines
Book on Aviasales

Fares by month

One-way, per person

Lowest fares Aviasales travelers found in recent searches; some may include a connection. Prices change often — tap a month to see live fares.

Weekly schedule

Monday

  • DL173106:00→08:103h 10mDelta Air Lines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN178808:30→10:403h 10mSouthwest Airlines
  • UA230211:50→13:543h 4mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • F9117513:04→15:123h 8mFrontier Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:55→23:003h 5mSouthwest Airlines

Tuesday

  • DL173106:00→08:103h 10mDelta Air Lines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN154308:50→11:003h 10mSouthwest Airlines
  • UA230211:50→13:543h 4mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • WN24415:40→17:503h 10mSouthwest Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:40→22:453h 5mSouthwest Airlines

Wednesday

  • DL173106:00→08:103h 10mDelta Air Lines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN154308:50→11:003h 10mSouthwest Airlines
  • UA230211:50→13:543h 4mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • F9117513:04→15:123h 8mFrontier Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • WN24415:40→17:503h 10mSouthwest Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:40→22:503h 10mSouthwest Airlines
  • UA265121:07→23:153h 8mUnited Airlines

Thursday

  • DL173106:00→08:103h 10mDelta Air Lines
  • WN478406:15→08:253h 10mSouthwest Airlines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN178808:30→10:403h 10mSouthwest Airlines
  • UA230211:50→13:543h 4mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:55→23:053h 10mSouthwest Airlines
  • UA265121:07→23:153h 8mUnited Airlines

Friday

  • DL173106:00→08:103h 10mDelta Air Lines
  • WN478406:15→08:253h 10mSouthwest Airlines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN178808:30→10:403h 10mSouthwest Airlines
  • UA230211:50→13:543h 4mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • F9117513:04→15:123h 8mFrontier Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:55→23:053h 10mSouthwest Airlines
  • UA265121:07→23:153h 8mUnited Airlines

Saturday

  • DL173106:00→08:103h 10mDelta Air Lines
  • AS31707:03→09:073h 4mAlaska Airlines
  • UA227107:40→09:473h 7mUnited Airlines
  • WN178809:00→11:053h 5mSouthwest Airlines
  • UA230211:50→13:553h 5mUnited Airlines
  • F9117513:04→15:123h 8mFrontier Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • WN29614:00→16:053h 5mSouthwest Airlines
  • AS49315:25→17:273h 2mAlaska Airlines
  • UA201315:55→17:593h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314119:45→21:553h 10mSouthwest Airlines

Sunday

  • DL173106:00→08:103h 10mDelta Air Lines
  • WN478406:15→08:253h 10mSouthwest Airlines
  • AS31707:03→09:074h 4mAlaska Airlines
  • UA227107:40→09:474h 7mUnited Airlines
  • WN178808:30→10:403h 10mSouthwest Airlines
  • UA230211:50→13:553h 5mUnited Airlines
  • AS68212:12→14:153h 3mAlaska Airlines
  • DL135813:55→16:083h 13mDelta Air Lines
  • AS49315:25→17:273h 2mAlaska Airlines
  • UA201315:53→17:573h 4mUnited Airlines
  • AS42118:37→20:413h 4mAlaska Airlines
  • DL254318:42→20:483h 6mDelta Air Lines
  • UA276719:10→21:193h 9mUnited Airlines
  • WN314120:55→23:053h 10mSouthwest Airlines
  • UA265121:07→23:153h 8mUnited Airlines

Denver to Seattle — frequently asked

How long is the flight from Denver to Seattle?
DEN–SEA is 3h 2m nonstop, covering 1,645 km (1,022 mi).
Which airlines fly nonstop from Denver to Seattle?
Alaska Airlines, ATI, Delta Air Lines, Frontier Airlines, Southwest Airlines, United Airlines operate this route nonstop.
How much is a flight from Denver to Seattle?
One-way fares on DEN–SEA recently started from $119 ($130 nonstop). The lowest recent fare is for travel in November 2026. Fares change daily, so check current prices before booking.
How often do flights run from Denver to Seattle?
The route is served 7 days a week (103 scheduled departures).