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Flights from Seattle to Denver – Direct & connecting routes

Non-stop airlines Connecting flights Show map Price search

SEA to DEN flights and routes map SEA to DEN – All flight route options from Seattle Tacoma International, Washington, USA to Denver International, Colorado, USA. These flights are operated by 6 different airlines. Fly non-stop or choose from 19 different connecting flights. The shortest flight time is 2 hours and 35 minutes. See the full flight schedule and time table, including departure times, airlines and stopover details to find the best option for you.

From
To
USA SEA Seattle Tacoma Seattle, WA, USA
USA DEN Denver , CO, USA
SEA
Seattle Tacoma
USASeattle, WA, USA
Denver
USADenver, CO, USA
DEN
5 direct routes found »
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26 routes with 1 stop found »
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Non-stop route options:

Duration

Southwest Airlines
Non-stop with Southwest Airlines. 4-5 flights per day.

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2h 35m

Southwest Airlines
Non-stop with Southwest Airlines.
2h 35m
4-5 flights per day.
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Delta Air Lines
Non-stop with Delta Air Lines. 3 flights per day.

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2h 45m

Delta Air Lines
Non-stop with Delta Air Lines.
2h 45m
3 flights per day.
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United Airlines
Non-stop with United Airlines. 7-13 flights per day.

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2h 46m

United Airlines
Non-stop with United Airlines.
2h 46m
7-13 flights per day.
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Alaska Airlines
Non-stop with Alaska Airlines. 5-6 flights per day.

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2h 47m

Alaska Airlines
Non-stop with Alaska Airlines.
2h 47m
5-6 flights per day.
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Frontier Airlines
Non-stop with Frontier Airlines. 1-2 flights per day.

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2h 50m

Frontier Airlines
Non-stop with Frontier Airlines.
2h 50m
1-2 flights per day.
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1 stop route options with the same airline:

Duration

Via Portland PDX
1 stop with Alaska Airlines. 2-3 flights per day.

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4h 20m

Via Portland PDX
1 stop with Alaska Airlines.
4h 20m
2-3 flights per day.
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Via Salt Lake City SLC
1 stop with Frontier Airlines. 0-1 flights per day.
Mon & Fri

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5h 09m

Mon & Fri
Via Salt Lake City SLC
1 stop with Frontier Airlines.
5h 09m
0-1 flights per day.
Mon & Fri
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Via Salt Lake City SLC
1 stop with Delta Air Lines. 3-4 flights per day.

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5h 12m

Via Salt Lake City SLC
1 stop with Delta Air Lines.
5h 12m
3-4 flights per day.
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Via Las Vegas LAS
1 stop with Southwest Airlines. 2-3 flights per day.

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6h 35m

Via Las Vegas LAS
1 stop with Southwest Airlines.
6h 35m
2-3 flights per day.
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Via Sacramento SMF
1 stop with Southwest Airlines. 2-3 flights per day.

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6h 50m

Via Sacramento SMF
1 stop with Southwest Airlines.
6h 50m
2-3 flights per day.
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Via Las Vegas LAS
1 stop with Frontier Airlines. 0-1 flights per day.

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6h 58m

Via Las Vegas LAS
1 stop with Frontier Airlines.
6h 58m
0-1 flights per day.
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Via Albuquerque ABQ
1 stop with Southwest Airlines.
Begins in 25/11

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7h 25m

Begins in 25/11
Via Albuquerque ABQ
1 stop with Southwest Airlines.
7h 25m
Begins in 25/11
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1 stop route options with codeshare or different airlines:

Duration

Via Redmond RDM With Alaska Airlines & United Airlines 1-2 flights per day.

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4h 19m

Via Redmond RDM
4h 19m
With Alaska Airlines & United Airlines 1-2 flights per day.
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Via Eugene EUG With Alaska Airlines & United Airlines 0-1 flights per day.

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4h 20m

Via Eugene EUG
4h 20m
With Alaska Airlines & United Airlines 0-1 flights per day.
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Via Spokane GEG With Alaska Airlines & United Airlines 4 flights per day.

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4h 42m

Via Spokane GEG
4h 42m
With Alaska Airlines & United Airlines 4 flights per day.
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Via Boise BOI With Alaska Airlines & United Airlines 3 flights per day.

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5h 10m

Via Boise BOI
5h 10m
With Alaska Airlines & United Airlines 3 flights per day.
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Via Kalispell FCA With Alaska Airlines & United Airlines 2 flights per day.

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5h 19m

Via Kalispell FCA
5h 19m
With Alaska Airlines & United Airlines 2 flights per day.
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Via Pasco PSC With Alaska Airlines & United Airlines 0-1 flights per day.

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5h 35m

Via Pasco PSC
5h 35m
With Alaska Airlines & United Airlines 0-1 flights per day.
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Via Medford MFR With Alaska Airlines & United Airlines 0-1 flights per day.

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5h 39m

Via Medford MFR
5h 39m
With Alaska Airlines & United Airlines 0-1 flights per day.
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Via Portland PDX With Alaska Airlines & United Airlines 7 flights per day.

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5h 40m

Via Portland PDX
5h 40m
With Alaska Airlines & United Airlines 7 flights per day.
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Via Helena HLN With Alaska Airlines & United Airlines

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5h 40m

Via Helena HLN
5h 40m
With Alaska Airlines & United Airlines
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Via Bozeman BZN With Alaska Airlines & United Airlines 2 flights per day.

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5h 41m

Via Bozeman BZN
5h 41m
With Alaska Airlines & United Airlines 2 flights per day.
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Via Missoula MSO With Alaska Airlines & United Airlines 2 flights per day.

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5h 43m

Via Missoula MSO
5h 43m
With Alaska Airlines & United Airlines 2 flights per day.
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Via Idaho Falls IDA With Alaska Airlines & United Airlines

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5h 45m

Via Idaho Falls IDA
5h 45m
With Alaska Airlines & United Airlines
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Via Salt Lake City SLC With Alaska Airlines & Delta Air Lines 0-2 flights per day.

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5h 56m

Via Salt Lake City SLC
5h 56m
With Alaska Airlines & Delta Air Lines 0-2 flights per day.
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Via Jackson JAC With Alaska Airlines & United Airlines 1-2 flights per day.

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6h 09m

Via Jackson JAC
6h 09m
With Alaska Airlines & United Airlines 1-2 flights per day.
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Via Reno RNO With Alaska Airlines & United Airlines 0-1 flights per day.

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6h 16m

Via Reno RNO
6h 16m
With Alaska Airlines & United Airlines 0-1 flights per day.
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Via Billings BIL With Alaska Airlines & United Airlines 1-2 flights per day.

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6h 28m

Via Billings BIL
6h 28m
With Alaska Airlines & United Airlines 1-2 flights per day.
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Via Sacramento SMF With Alaska Airlines & United Airlines 2 flights per day.

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6h 34m

Via Sacramento SMF
6h 34m
With Alaska Airlines & United Airlines 2 flights per day.
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Via Las Vegas LAS With Alaska Airlines & United Airlines 2-3 flights per day.

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6h 49m

Via Las Vegas LAS
6h 49m
With Alaska Airlines & United Airlines 2-3 flights per day.
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Via Albuquerque ABQ With Alaska Airlines & United Airlines 0-1 flights per day.

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6h 56m

Via Albuquerque ABQ
6h 56m
With Alaska Airlines & United Airlines 0-1 flights per day.
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Seattle to Denver flights

There are over 24 airlines and as many as 814 flights every week to this destination. You can fly non-stop to Denver (DEN) from Seattle (SEA) with Alaska Airlines, Delta Air Lines, Frontier Airlines, United Airlines or Southwest Airlines but if a stopover option suits you better you can choose to fly via Redmond, Eugene or any other of the 19 alternatives with connectiing airports.

Seattle to Denver with Alaska Airlines

You can fly non-stop every weekday with flights departing from 7:00 am to 8:00 pm. You also have the option to do a transit flight via Portland. Alaska Airlines is a member of the air alliance OneWorld.

With Delta Air Lines

You can fly non-stop every weekday with flights departing between 7:00 am and 7:00 pm. You also have the option to do a transit flight via Salt Lake City. Delta Air Lines is a member of SkyTeam.

Distance & flight times: Seattle Airport to Denver International

The shortest flight time between SEA and DEN is 2 hours and 47 minutes.

ViaTotal flight timeLayover timeDistance
Direct2h 47m-1028 miles (1654 km)
RDM Redmond4h 19m39m1130 miles (1818 km)
EUG Eugene4h 20m40m1234 miles (1986 km)
PDX Portland4h 20m40m1124 miles (1809 km)
GEG Spokane4h 42m1h 12m1063 miles (1710 km)
BOI Boise5h 10m1h 17m1051 miles (1691 km)
FCA Kalispell5h 19m1h 33m1135 miles (1826 km)
PSC Pasco5h 35m2h 5m1027 miles (1652 km)
MFR Medford5h 39m1h 38m1319 miles (2122 km)
HLN Helena5h 40m1h 59m1088 miles (1751 km)
BZN Bozeman5h 41m2h 21m1071 miles (1723 km)
MSO Missoula5h 43m2h 8m1070 miles (1722 km)
IDA Idaho Falls5h 45m2h 41m1027 miles (1652 km)
SLC Salt Lake City5h 56m2h 35m1083 miles (1743 km)
JAC Jackson6h 9m1h 41m1029 miles (1656 km)
RNO Reno6h 16m2h 15m1373 miles (2209 km)
BIL Billings6h 28m1h 40m1122 miles (1805 km)
SMF Sacramento6h 34m2h 57m1521 miles (2447 km)
LAS Las Vegas6h 49m53m1501 miles (2415 km)
ABQ Albuquerque6h 56m1h 31m1536 miles (2471 km)
The flight times and layover times in the table above are approximate and may vary depending on flight number, aircraft, airline, weather, and time of day.SEA-DEN flight routesSeattle to Denver flight routes illustrated on a map.
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Arriving at Denver International
Arriving at Denver International. Copyright: Denver International Airport
Seattle - Denver route map and flight paths
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You can fly non-stop from Seattle (SEA) to Denver (DEN) with Alaska Airlines, Delta Air Lines, Frontier Airlines, United Airlines or Southwest Airlines. The flight takes approximately 2 hours and 47 minutes. If you travel with a connecting flight instead, for example via Redmond, the total flight time will be 4 hours and 19 minutes.

If you're interested in direct flights, Alaska Airlines, Delta Air Lines, Frontier Airlines, United Airlines or Southwest Airlines is available. For flights with stopovers, Alaska Airlines, United Airlines or Delta Air Lines is also an option.

The flight time between Seattle Tacoma (SEA) and Denver International (DEN) is approximately 2 hours and 47 minutes. The distance between the two airports is 1124 miles (or 1809 kilometers).

Yes, you can fly non-stop to DEN from SEA with Alaska Airlines, Delta Air Lines, Frontier Airlines, United Airlines or Southwest Airlines.

A codeshare agreement means that cooperating airlines are able to sell seats on each other’s flights. This means that you are able to travel to more destinations than your airline of choice normally offers. Codeshare flights are also beneficial because of the seamless transits you can get with connecting flights from the same airline. The downside of choosing a codeshare flight can be that you in some cases can’t upgrade codeshare flights or use elite benefits.

A connecting or transit flight means that you reach your final destination through two or more flights – in other words a non-direct flight. You will change to a new aircraft after your first flight, this may include moving to another terminal at the airport aswell. The time required to transfer passengers and luggage between flights is called Minimum Connecting Time (MCT) and are always taken into account here on Flightroutes.com.

If you bought your whole flight on a single ticket, the airline will book you on the next available connecting flight.

With connecting flights, checked in luggage is most commonly forwarded to your final destination when buying a single ticket for both flights.

If you miss your connecting flight due to circumstances outside your control such as your first flight being delayed, you should turn to your airline who will provide you with a seat on the next available flight. This is usually done free of charge, and only applies if you purchased your trip as one ticket. If the next connecting flight is the following day, the airline usually provides accommodation and meals.
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