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Flights from Dulles to Seattle – Direct & connecting routes

Non-stop airlines Connecting flights Show map Price search

IAD to SEA flights and routes map IAD to SEA – All flight route options from Washington Dulles International, Virginia, USA to Seattle Tacoma International, Washington, USA. These flights are operated by 8 different airlines. Fly non-stop or choose from 28 different connecting flights. The shortest flight time is 5 hours and 45 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 IAD Washington Dulles Dulles, VA, USA
USA SEA Seattle Tacoma , WA, USA
IAD
Washington Dulles
USADulles, VA, USA
Seattle Tacoma
USASeattle, WA, USA
SEA
3 direct routes found »
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47 routes with 1 stop found »
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Non-stop route options:

Duration

Alaska Airlines
Non-stop with Alaska Airlines. 3 flights per day.

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5h 45m

Alaska Airlines
Non-stop with Alaska Airlines.
5h 45m
3 flights per day.
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United Airlines
Non-stop with United Airlines. 4-7 flights per day.

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5h 50m

United Airlines
Non-stop with United Airlines.
5h 50m
4-7 flights per day.
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Delta Air Lines
Non-stop with Delta Air Lines. 1 flight per day.

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6h 04m

Delta Air Lines
Non-stop with Delta Air Lines.
6h 04m
1 flight per day.
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1 stop route options with the same airline:

Duration

Via Minneapolis MSP
1 stop with Sun Country Airlines. 0-1 flights per day.

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7h 34m

Via Minneapolis MSP
1 stop with Sun Country Airlines.
7h 34m
0-1 flights per day.
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Via Detroit DTW
1 stop with Delta Air Lines. 3-4 flights per day.

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7h 51m

Via Detroit DTW
1 stop with Delta Air Lines.
7h 51m
3-4 flights per day.
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Via Minneapolis MSP
1 stop with Delta Air Lines. 2-3 flights per day.

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7h 52m

Via Minneapolis MSP
1 stop with Delta Air Lines.
7h 52m
2-3 flights per day.
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Via Denver DEN
1 stop with Southwest Airlines. 1-3 flights per day.

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7h 55m

Via Denver DEN
1 stop with Southwest Airlines.
7h 55m
1-3 flights per day.
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Via Salt Lake City SLC
1 stop with Delta Air Lines. 2 flights per day.

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8h 03m

Via Salt Lake City SLC
1 stop with Delta Air Lines.
8h 03m
2 flights per day.
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Via Chicago ORD
1 stop with United Airlines. 3-4 flights per day.

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8h 33m

Via Chicago ORD
1 stop with United Airlines.
8h 33m
3-4 flights per day.
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Via Denver DEN
1 stop with United Airlines. 5-8 flights per day.

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8h 34m

Via Denver DEN
1 stop with United Airlines.
8h 34m
5-8 flights per day.
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Via Dallas DFW
1 stop with American Airlines. 2-4 flights per day.

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9h 08m

Via Dallas DFW
1 stop with American Airlines.
9h 08m
2-4 flights per day.
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Via Charlotte CLT
1 stop with American Airlines. 3-4 flights per day.

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9h 14m

Via Charlotte CLT
1 stop with American Airlines.
9h 14m
3-4 flights per day.
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Via New York EWR
1 stop with United Airlines. 1-2 flights per day.

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9h 22m

Via New York EWR
1 stop with United Airlines.
9h 22m
1-2 flights per day.
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Via Atlanta ATL
1 stop with Delta Air Lines. 3-6 flights per day.

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9h 29m

Via Atlanta ATL
1 stop with Delta Air Lines.
9h 29m
3-6 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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9h 41m

Via Las Vegas LAS
1 stop with Frontier Airlines.
9h 41m
0-1 flights per day.
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Via New York JFK
1 stop with Delta Air Lines. 0-1 flights per day.

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9h 59m

Via New York JFK
1 stop with Delta Air Lines.
9h 59m
0-1 flights per day.
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Via Pittsburgh PIT
1 stop with United Airlines. 0-1 flights per day.
Begins in 25/9

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10h 07m

Begins in 25/9
Via Pittsburgh PIT
1 stop with United Airlines.
10h 07m
0-1 flights per day.
Begins in 25/9
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Via Boston BOS
1 stop with United Airlines.

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12h 14m

Via Boston BOS
1 stop with United Airlines.
12h 14m
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Via Indianapolis IND
1 stop with United Airlines. 0-1 flights per day.

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12h 29m

Via Indianapolis IND
1 stop with United Airlines.
12h 29m
0-1 flights per day.
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Via Raleigh/Durham RDU
1 stop with United Airlines.
Begins in 25/9

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13h 06m

Begins in 25/9
Via Raleigh/Durham RDU
1 stop with United Airlines.
13h 06m
Begins in 25/9
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Via New York LGA
1 stop with United Airlines. 0-1 flights per day.

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13h 17m

Via New York LGA
1 stop with United Airlines.
13h 17m
0-1 flights per day.
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Via Las Vegas LAS
1 stop with United Airlines.
Only fridays

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13h 38m

Only fridays
Via Las Vegas LAS
1 stop with United Airlines.
13h 38m
Only fridays
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Via Burlington BTV
1 stop with United Airlines. 0-1 flights per day.

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14h 41m

Via Burlington BTV
1 stop with United Airlines.
14h 41m
0-1 flights per day.
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1 stop route options with codeshare or different airlines:

Duration

Via Bozeman BZN With United Airlines & Alaska Airlines
Begins in 23/8

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6h 56m

Begins in 23/8
Via Bozeman BZN
6h 56m
With United Airlines & Alaska Airlines
Begins in 23/8
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Via Pittsburgh PIT With United Airlines & Alaska Airlines 1-2 flights per day.

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7h 20m

Via Pittsburgh PIT
7h 20m
With United Airlines & Alaska Airlines 1-2 flights per day.
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Via Kansas City MCI With United Airlines & American Airlines
CODESHARE

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7h 30m

Via Kansas City MCI
7h 30m
With United Airlines & American Airlines
CODESHARE
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Via Cleveland CLE With United Airlines & Alaska Airlines 0-1 flights per day.

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7h 32m

Via Cleveland CLE
7h 32m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Columbus CMH With United Airlines & American Airlines
CODESHARE

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7h 35m

Via Columbus CMH
7h 35m
With United Airlines & American Airlines
CODESHARE
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Via Cincinnati CVG With United Airlines & American Airlines 0-1 flights per day.
CODESHARE

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7h 50m

Via Cincinnati CVG
7h 50m
With United Airlines & American Airlines 0-1 flights per day.
CODESHARE
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Via Salt Lake City SLC With Delta Air Lines & Alaska Airlines 0-1 flights per day.

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7h 59m

Via Salt Lake City SLC
7h 59m
With Delta Air Lines & Alaska Airlines 0-1 flights per day.
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Via Minneapolis MSP With Delta Air Lines & Alaska Airlines 0-1 flights per day.

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8h 00m

Via Minneapolis MSP
8h 00m
With Delta Air Lines & Alaska Airlines 0-1 flights per day.
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Via Indianapolis IND With United Airlines & American Airlines 0-1 flights per day.
CODESHARE

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8h 05m

Via Indianapolis IND
8h 05m
With United Airlines & American Airlines 0-1 flights per day.
CODESHARE
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Via Raleigh/Durham RDU With United Airlines & Alaska Airlines 0-1 flights per day.

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8h 26m

Via Raleigh/Durham RDU
8h 26m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Charlotte CLT With United Airlines & American Airlines 2-3 flights per day.

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8h 42m

Via Charlotte CLT
8h 42m
With United Airlines & American Airlines 2-3 flights per day.
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Via Dallas DFW With American Airlines & Alaska Airlines 0-1 flights per day.

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8h 45m

Via Dallas DFW
8h 45m
With American Airlines & Alaska Airlines 0-1 flights per day.
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Via Detroit DTW With Delta Air Lines & American Airlines 0-1 flights per day.
CODESHARE

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8h 45m

Via Detroit DTW
8h 45m
With Delta Air Lines & American Airlines 0-1 flights per day.
CODESHARE
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Via Portland PDX With United Airlines & Alaska Airlines 1-2 flights per day.

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8h 49m

Via Portland PDX
8h 49m
With United Airlines & Alaska Airlines 1-2 flights per day.
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Via Nashville BNA With United Airlines & Alaska Airlines 0-1 flights per day.

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8h 58m

Via Nashville BNA
8h 58m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Chicago ORD With United Airlines & American Airlines 3-5 flights per day.

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9h 00m

Via Chicago ORD
9h 00m
With United Airlines & American Airlines 3-5 flights per day.
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Via Denver DEN With United Airlines & Alaska Airlines 1-5 flights per day.

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9h 10m

Via Denver DEN
9h 10m
With United Airlines & Alaska Airlines 1-5 flights per day.
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Via Las Vegas LAS With United Airlines & Alaska Airlines 2-4 flights per day.

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9h 12m

Via Las Vegas LAS
9h 12m
With United Airlines & Alaska Airlines 2-4 flights per day.
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Via Albuquerque ABQ With United Airlines & Alaska Airlines
Begins in 4/10

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9h 15m

Begins in 4/10
Via Albuquerque ABQ
9h 15m
With United Airlines & Alaska Airlines
Begins in 4/10
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Via Atlanta ATL With Delta Air Lines & Alaska Airlines 1-2 flights per day.

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9h 23m

Via Atlanta ATL
9h 23m
With Delta Air Lines & Alaska Airlines 1-2 flights per day.
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Via New York EWR With United Airlines & Alaska Airlines 0-1 flights per day.

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9h 37m

Via New York EWR
9h 37m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Via Boston BOS With United Airlines & Alaska Airlines 1-2 flights per day.

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9h 40m

Via Boston BOS
9h 40m
With United Airlines & Alaska Airlines 1-2 flights per day.
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Via Philadelphia PHL With United Airlines & American Airlines
Begins in 7/8

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9h 40m

Begins in 7/8
Via Philadelphia PHL
9h 40m
With United Airlines & American Airlines
Begins in 7/8
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Via New York JFK With Delta Air Lines & Alaska Airlines 2 flights per day.
Begins in 11/9

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10h 24m

Begins in 11/9
Via New York JFK
10h 24m
With Delta Air Lines & Alaska Airlines 2 flights per day.
Begins in 11/9
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Via Jackson JAC With United Airlines & Alaska Airlines
Begins in 25/9

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10h 25m

Begins in 25/9
Via Jackson JAC
10h 25m
With United Airlines & Alaska Airlines
Begins in 25/9
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Via New York LGA With United Airlines & Alaska Airlines 1-2 flights per day.

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10h 28m

Via New York LGA
10h 28m
With United Airlines & Alaska Airlines 1-2 flights per day.
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Via Charleston CHS With United Airlines & Alaska Airlines 0-1 flights per day.

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10h 40m

Via Charleston CHS
10h 40m
With United Airlines & Alaska Airlines 0-1 flights per day.
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Dulles to Seattle flights

There are over 31 airlines and as many as 582 flights every week to this destination. You can fly non-stop to Seattle (SEA) from Dulles (IAD) with Alaska Airlines, United Airlines or Delta Air Lines but if a stopover option suits you better you can choose to fly via Bozeman, Kansas City or any other of the 28 alternatives with connectiing airports.

Tip! You can also fly to Seattle from Ronald Reagan Washington National (DCA).

Dulles to Seattle with Alaska Airlines

You can fly non-stop every weekday with flights departing between 6:00 am and 7:00 pm. Alaska Airlines is a member of the air alliance OneWorld.

With Sun Country Airlines

If you fly from Dulles with Sun Country Airlines you will do a stopover in Minneapolis, MSP before reaching Seattle. This flight trip will take 7 hours and 34 minutes and you can fly every weekday with departures between 10:00 am and 6:00 pm.

Distance & flight times: Dulles to Seattle Airport

The shortest flight time between IAD and SEA is 5 hours and 45 minutes.

ViaTotal flight timeLayover timeDistance
Direct5h 45m-2313 miles (3722 km)
BZN Bozeman6h 56m36m2323 miles (3738 km)
MCI Kansas City7h 30m49m2424 miles (3900 km)
CLE Cleveland7h 32m58m2316 miles (3726 km)
CMH Columbus7h 35m1h 9m2322 miles (3736 km)
CVG Cincinnati7h 50m1h 12m2359 miles (3796 km)
SLC Salt Lake City7h 59m2h 0m2524 miles (4061 km)
MSP Minneapolis8h 0m1h 23m2313 miles (3722 km)
IND Indianapolis8h 5m1h 31m2349 miles (3780 km)
RDU Raleigh/Durham8h 26m1h 17m2587 miles (4162 km)
DTW Detroit8h 45m2h 34m2317 miles (3728 km)
PDX Portland8h 49m1h 27m2464 miles (3965 km)
BNA Nashville8h 58m1h 58m2528 miles (4068 km)
ORD Chicago9h 0m2h 12m2315 miles (3725 km)
DFW Dallas9h 8m36m2843 miles (4574 km)
DEN Denver9h 10m1h 3m2485 miles (3998 km)
LAS Las Vegas9h 12m1h 56m2943 miles (4735 km)
CLT Charlotte9h 14m36m2610 miles (4199 km)
ABQ Albuquerque9h 15m1h 19m2818 miles (4534 km)
ATL Atlanta9h 23m1h 53m2727 miles (4388 km)
EWR New York9h 37m2h 1m2620 miles (4216 km)
PHL Philadelphia9h 40m2h 28m2519 miles (4053 km)
BOS Boston9h 40m1h 6m2916 miles (4692 km)
PIT Pittsburgh10h 7m1h 15m2314 miles (3723 km)
JFK New York10h 24m2h 56m2656 miles (4274 km)
JAC Jackson10h 25m1h 19m2377 miles (3825 km)
LGA New York10h 28m--
CHS Charleston10h 40m2h 53m2868 miles (4615 km)
BTV Burlington14h 41m2h 50m2786 miles (4483 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.IAD-SEA flight routesDulles to Seattle flight routes illustrated on a map.
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You can fly non-stop from Dulles (IAD) to Seattle (SEA) with Alaska Airlines, United Airlines or Delta Air Lines. The flight takes approximately 5 hours and 45 minutes. If you travel with a connecting flight instead, for example via Bozeman, the total flight time will be 6 hours and 56 minutes.

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

The flight time between Washington Dulles (IAD) and Seattle Tacoma International (SEA) is approximately 5 hours and 45 minutes. The distance between the two airports is 2843 miles (or 4574 kilometers).

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

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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