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Flights from Denver to Seattle – Direct & connecting routes

Non-stop airlines Connecting flights Show map Price search

DEN to SEA flights and routes map DEN to SEA – All flight route options from Denver International, Colorado, USA to Seattle Tacoma International, Washington, USA. These flights are operated by 6 different airlines. Fly non-stop or choose from 21 different connecting flights. The shortest flight time is 2 hours and 59 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 DEN Denver Denver, CO, USA
USA SEA Seattle Tacoma , WA, USA
DEN
Denver
USADenver, CO, USA
Seattle Tacoma
USASeattle, WA, USA
SEA
5 direct routes found »
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29 routes with 1 stop found »
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Non-stop route options:

Duration

United Airlines
Non-stop with United Airlines. 6-7 flights per day.

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2h 59m

United Airlines
Non-stop with United Airlines.
2h 59m
6-7 flights per day.
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Southwest Airlines
Non-stop with Southwest Airlines. 4-5 flights per day.

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3h 00m

Southwest Airlines
Non-stop with Southwest Airlines.
3h 00m
4-5 flights per day.
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Alaska Airlines
Non-stop with Alaska Airlines. 5-6 flights per day.

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3h 01m

Alaska Airlines
Non-stop with Alaska Airlines.
3h 01m
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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3h 06m

Frontier Airlines
Non-stop with Frontier Airlines.
3h 06m
1-2 flights per day.
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Delta Air Lines
Non-stop with Delta Air Lines. 3 flights per day.

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3h 08m

Delta Air Lines
Non-stop with Delta Air Lines.
3h 08m
3 flights per day.
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1 stop route options with the same airline:

Duration

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

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5h 09m

Via Portland PDX
1 stop with Alaska Airlines.
5h 09m
1-2 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 14m

Mon & Fri
Via Salt Lake City SLC
1 stop with Frontier Airlines.
5h 14m
0-1 flights per day.
Mon & Fri
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Via Las Vegas LAS
1 stop with Frontier Airlines. 0-1 flights per day.
Begins in 21/8

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6h 06m

Begins in 21/8
Via Las Vegas LAS
1 stop with Frontier Airlines.
6h 06m
0-1 flights per day.
Begins in 21/8
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Via Salt Lake City SLC
1 stop with Delta Air Lines. 3-4 flights per day.

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6h 13m

Via Salt Lake City SLC
1 stop with Delta Air Lines.
6h 13m
3-4 flights per day.
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Via Sacramento SMF
1 stop with Southwest Airlines. 1-6 flights per day.

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6h 55m

Via Sacramento SMF
1 stop with Southwest Airlines.
6h 55m
1-6 flights per day.
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Via Las Vegas LAS
1 stop with Southwest Airlines. 4-7 flights per day.

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7h 00m

Via Las Vegas LAS
1 stop with Southwest Airlines.
7h 00m
4-7 flights per day.
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Via Albuquerque ABQ
1 stop with Southwest Airlines. 0-1 flights per day.
Begins in 4/11

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7h 25m

Begins in 4/11
Via Albuquerque ABQ
1 stop with Southwest Airlines.
7h 25m
0-1 flights per day.
Begins in 4/11
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Via Las Vegas LAS
1 stop with United Airlines. 0-1 flights per day.

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12h 13m

Via Las Vegas LAS
1 stop with United Airlines.
12h 13m
0-1 flights per day.
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1 stop route options with codeshare or different airlines:

Duration

Via Pasco PSC With United Airlines & Alaska Airlines 0-1 flights per day.

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4h 23m

Via Pasco PSC
4h 23m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Billings BIL With United Airlines & Alaska Airlines 2 flights per day.

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4h 29m

Via Billings BIL
4h 29m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Redmond RDM With United Airlines & Alaska Airlines 0-1 flights per day.

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4h 38m

Via Redmond RDM
4h 38m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Kalispell FCA With United Airlines & Alaska Airlines 2 flights per day.

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4h 39m

Via Kalispell FCA
4h 39m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Eugene EUG With United Airlines & Alaska Airlines 2 flights per day.

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4h 39m

Via Eugene EUG
4h 39m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Boise BOI With United Airlines & Alaska Airlines 3 flights per day.

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5h 13m

Via Boise BOI
5h 13m
With United Airlines & Alaska Airlines 3 flights per day.
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Via Spokane GEG With United Airlines & Alaska Airlines 2 flights per day.

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5h 21m

Via Spokane GEG
5h 21m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Bozeman BZN With United Airlines & Alaska Airlines 3 flights per day.

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5h 24m

Via Bozeman BZN
5h 24m
With United Airlines & Alaska Airlines 3 flights per day.
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Via Salt Lake City SLC With Delta Air Lines & Alaska Airlines 3-4 flights per day.

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5h 35m

Via Salt Lake City SLC
5h 35m
With Delta Air Lines & Alaska Airlines 3-4 flights per day.
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Via Portland PDX With United Airlines & Alaska Airlines 3-4 flights per day.

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5h 55m

Via Portland PDX
5h 55m
With United Airlines & Alaska Airlines 3-4 flights per day.
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Via Helena HLN With United Airlines & Alaska Airlines

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6h 01m

Via Helena HLN
6h 01m
With United Airlines & Alaska Airlines
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Via Idaho Falls IDA With United Airlines & Alaska Airlines 1-2 flights per day.

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6h 14m

Via Idaho Falls IDA
6h 14m
With United Airlines & Alaska Airlines 1-2 flights per day.
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Via Reno RNO With United Airlines & Alaska Airlines 2 flights per day.

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6h 14m

Via Reno RNO
6h 14m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Medford MFR With United Airlines & Alaska Airlines 0-1 flights per day.
Begins in 4/10

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6h 16m

Begins in 4/10
Via Medford MFR
6h 16m
With United Airlines & Alaska Airlines 0-1 flights per day.
Begins in 4/10
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Via Missoula MSO With United Airlines & Alaska Airlines 2 flights per day.

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6h 19m

Via Missoula MSO
6h 19m
With United Airlines & Alaska Airlines 2 flights per day.
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Via Albuquerque ABQ With United Airlines & Alaska Airlines 1-2 flights per day.
Begins in 4/10

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6h 20m

Begins in 4/10
Via Albuquerque ABQ
6h 20m
With United Airlines & Alaska Airlines 1-2 flights per day.
Begins in 4/10
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Via Redding RDD With United Airlines & Alaska Airlines
Begins in 21/11

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6h 20m

Begins in 21/11
Via Redding RDD
6h 20m
With United Airlines & Alaska Airlines
Begins in 21/11
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Via Sacramento SMF With United Airlines & American Airlines 0-1 flights per day.
CODESHARE

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6h 27m

Via Sacramento SMF
6h 27m
With United Airlines & American Airlines 0-1 flights per day.
CODESHARE
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Via Las Vegas LAS With United Airlines & Alaska Airlines 4 flights per day.

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6h 29m

Via Las Vegas LAS
6h 29m
With United Airlines & Alaska Airlines 4 flights per day.
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Via Great Falls GTF With United Airlines & Alaska Airlines
Begins in 20/8

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6h 50m

Begins in 20/8
Via Great Falls GTF
6h 50m
With United Airlines & Alaska Airlines
Begins in 20/8
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Via Jackson JAC With United Airlines & Alaska Airlines 0-1 flights per day.

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6h 55m

Via Jackson JAC
6h 55m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Denver to Seattle flights

There are over 26 airlines and as many as 844 flights every week to this destination. You can fly non-stop to Seattle (SEA) from Denver (DEN) 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 Pasco, Billings or any other of the 21 alternatives with connectiing airports.

Denver to Seattle with Alaska Airlines

You can fly non-stop every weekday with flights departing from 6:00 am to 9:00 pm. You also have the option to do a transit flight via Portland. Alaska Airlines is a member of the air alliance OneWorld.

With Frontier Airlines

You can fly non-stop every weekday with flights departing from 7:00 am to 10:00 pm. You can also take a connecting flight via Salt Lake City or Las Vegas.

Distance & flight times: Denver International to Seattle Airport

The shortest flight time between DEN and SEA is 3 hours.

ViaTotal flight timeLayover timeDistance
Direct3h 0m-1028 miles (1654 km)
PSC Pasco4h 23m35m1027 miles (1652 km)
BIL Billings4h 29m37m1122 miles (1805 km)
RDM Redmond4h 38m40m1130 miles (1818 km)
FCA Kalispell4h 39m40m1135 miles (1826 km)
EUG Eugene4h 39m30m1234 miles (1986 km)
PDX Portland5h 9m47m1124 miles (1809 km)
BOI Boise5h 13m2h 58m1051 miles (1691 km)
GEG Spokane5h 21m40m1063 miles (1710 km)
BZN Bozeman5h 24m1h 30m1071 miles (1723 km)
SLC Salt Lake City5h 35m2h 27m1083 miles (1743 km)
HLN Helena6h 1m2h 9m1088 miles (1751 km)
IDA Idaho Falls6h 14m2h 42m1027 miles (1652 km)
RNO Reno6h 14m1h 59m1373 miles (2209 km)
MFR Medford6h 16m2h 17m1319 miles (2122 km)
MSO Missoula6h 19m53m1070 miles (1722 km)
RDD Redding6h 20m1h 35m1416 miles (2278 km)
ABQ Albuquerque6h 20m1h 39m1536 miles (2471 km)
SMF Sacramento6h 27m1h 57m1521 miles (2447 km)
LAS Las Vegas6h 29m2h 32m1501 miles (2415 km)
GTF Great Falls6h 50m2h 52m1139 miles (1833 km)
JAC Jackson6h 55m2h 58m1029 miles (1656 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.DEN-SEA flight routesDenver to Seattle flight routes illustrated on a map.
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Departing from Denver International
Departing from Denver International. Copyright: Denver International Airport
Denver - Seattle route map and flight paths
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You can fly non-stop from Denver (DEN) to Seattle (SEA) with Alaska Airlines, Delta Air Lines, Frontier Airlines, United Airlines or Southwest Airlines. The flight takes approximately 3 hours. If you travel with a connecting flight instead, for example via Pasco, the total flight time will be 4 hours and 23 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, United Airlines, Alaska Airlines, Delta Air Lines or American Airlines is also an option.

The flight time between Denver (DEN) and Seattle Tacoma International (SEA) is approximately 3 hours. The distance between the two airports is 1124 miles (or 1809 kilometers).

Yes, you can fly non-stop to SEA from DEN 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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