Trips

Find Cheap Flights from Seattle to Washington Dulles Intl (03A - IAD)

Search hundreds of travel sites at once for deals on flights to Washington Dulles Intl

Fri 8/17
Fri 8/24
Any month
Compare vs. KAYAK |

Seattle to Washington Dulles Intl Flight Information

Flights Arrive in Washington Dulles Intl
Flights Depart from Seattle
Flight Price $263
Distance 2,301 miles
Airlines Frontier, American Airlines, Major Airline, Alaska Airlines, Delta

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $182 or less.

Book cheap flights from Seattle to Washington Dulles Intl (round-trip)

Airports
Origin
Seattle
$263
only
$263
Destination
Washington
$263
only
$263
Thu, Oct 11
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
26h 25m
Tue, Oct 16
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
21h 02m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
OKC
DEN
Excellent 9.5

I liked the fairs. plane was nice friendly crew we did well on the seat Lottery

My wife and I didn't get to sit together No drinks, peanuts

DEN
LAS
Excellent 8.0

I got the same seats with my kids

That I missed my flight back to Denver and had to pay for a new flight for the next day

RDU
MSY
Good 6.3

Crew was great. Tickets great price

I was surprised to pay for carry on. Raise the price $40 and make it free. All drinks had a cost...$2.99 for juice? Crazy

BNA
PHL
Good 6.0

They charged extra for everything. $45 for a checked bag, $3.00 for a can of soda or snacks and up from there.

DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

Tue, Sep 11
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 39m
Wed, Sep 19
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
7h 51m
Trip: 9 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
BCN
JFK
Good 7.6

Even on a big ole B777 you better upgrade to bigger seats

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

LAX
ORD
Excellent 8.6

Pilot was informative.

Thu, Sep 6
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 21m
Fri, Sep 14
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 19m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Oct 17
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
5h 12m
Sat, Oct 20
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 02m
Trip: 4 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 46 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SEA
IAD
Excellent 8.6

The crew was extremely pleasant and genuinely accommodating. (and USB ports on every seat?!

No cash-handling for meals and services... (but that's my fault for assuming it would be cash only).

SEA
IAD
Good 6.0

Wifi didn't work. Very dissappointing.

SEA
IAD
Excellent 10.0

I loved the free chat and free entertainment! It made such a long flight go so much better and goodbyes and travel easier knowing that I could communicate on the go! For someone with social anxiety, being able to talk to loved ones when I was going through things was the best experience ever! Thank you so much!

SAN
PDX
Excellent 10.0

Very friendly agents from boarding to in-flight. Everyone was helpful and kind.

SEA
IAD
Excellent 8.6

Yes, they My have lost it but they delivered it to make up for the mistakes.

Tue, Sep 18
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
21h 30m
Mon, Sep 24
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
19h 02m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Sep 11
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 16m
Sat, Sep 22
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
11h 05m
Trip: 12 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 19,595 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
PBI
LGA
Excellent 10.0

Boarding was on time; flight departures on time and arrived earlier than expected! Pilot told us exactly what was the status and gave us updates; cabin was well air conditioned; flight attendants were friendly; bags came out very quick! Very nice flight

SFO
DTW
Okay 4.6

The flight attendants were very kind and hoped to make up for the pilot’s negligence.

Boarding was weird with a lack of overhead bins and then the pilot was inconsistent with updates to safety issues. We were delayed by an hour and twenty mins and then had to wait on the tarmac for another plane to leave the gate. Feels like I wasted two hours in limbo.

LGA
PBI
Excellent 10.0

There were many delays and cancellations due to bad thunderstorms at LGA. Despite a few hours delayed (because the airport was closed due to the storm), the flight was still schedule to leave! I was very happy about that. They did issue waivers for those who could not make the later time. Once delta got the ok to fly.. The flight left the gate very fast and we arrived and exited the plane super fast too. The process was so efficient and quick, I did not feel the waiting period. The flight attendance were so happy and positive, they made he flight very enjoyable. Great job delta!

LAX
TUS
Okay 5.6

The bag service

The flight delays

LGA
TYS
Good 6.8

Although we ended up being stuck on the plane for 2 hours prior to take off due to high volume, weather and as the pilot put it, "possible military activity" the crew kept us informed every step of the way. There was one flight attendant in particular who was so full of energy and made the unfortunate circumstances not so bad. She entertained us and kept us in the loop the entire time as did the pilots. It made the 2 hours not feel so bad which was appreciated.

That we were delayed on the plane for two hours on a small plane but I know it was out of their control.

Tue, Sep 11
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
26h 25m
Sat, Sep 15
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
21h 02m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
LAS
Excellent 8.0

I got the same seats with my kids

That I missed my flight back to Denver and had to pay for a new flight for the next day

SAT
CLT
Excellent 10.0

Easy

ATL
DEN
Good 6.0

Liked the smooth flight and newness of plane.

Narrow seating. I even upgraded to stretch seating but couldn’t tell! Cranberry juice was $2.99. But the BIG thing is that my luggage never made it onto the plane. Having to change all my plans due to lost luggage. Ugh

MDT
MCO
Good 7.6

No info. Why it was delayed. No apologies. No free drinks, nothing. Delayed 2 hours.

DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

Wed, Aug 29
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 37m
Sun, Sep 2
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
17h 39m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LGA
ILM
Okay 5.6

Being delayed

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

JAX
CLT
Good 6.0

Bumpy

LAX
SFO
Mediocre 2.0

Nothing. Just the pilot

Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund.

MSP
MIA
Mediocre 3.3

Let's see - I was in first class. The flight itself was fine - and only one hour + late!

Food - Served the "breakfast" (when it was called a protein plate) I had coming (into MSP). for "lunch" on the way back (called it a meat plate for lunch. One slice turkey, one slice jamon, one egg, cinnamon roll and fruit. Just because they don't want to serve bread - they call it a protein plate? I'm not on a protein diet. Food was pretty sick for the amount I paid for the fight. Stewardess said it was against Republic's rules to give a customer a can of tonic water (so I could add to the small amount of vodka) - she also told me that it was against Delta's, American's and United's rules to give a can - strange? First Class seat did not recline. First Class was freezing per every flight on this segment (the stewardesses sit in the back and don't want to be uncomfortable - if they make the front warm - the back is too hot for them (not joking on this one). So many things to list - that I will finish on the AA site.

Wed, Sep 19
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 45m
Mon, Sep 24
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 05m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Oct 30
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
5h 12m
Sat, Nov 3
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 02m
Trip: 5 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 46 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SEA
IAD
Excellent 9.3

Alaska Airlines had a very comfortable flight with great attendants and power to charge all your devices.

The wifi service was really poor. I paid 49.99 for Gogo and I got the service of less than a 56.k modem.

SAN
PDX
Excellent 10.0

Very friendly agents from boarding to in-flight. Everyone was helpful and kind.

SEA
IAD
Excellent 10.0

The staff was really friendly, easy boarding, great fast baggage claim. overall great!

SEA
IAD
Excellent 8.3

Friendly and calm professionals in the "assistance" line. The ticket kiosk did not recognize my confirmation number or name so I was instructed to wait in the assistance line and I was furious- swore I'd never fly with Alaska again- but then the ticket agent was fantastic, calm and helpful and helped put me in a better mood. Overall flight was great. Felt safe, hardly any turbulence and friendly flight staff. Flight was on time. No delays.

No screens on the back of seats with free entertainment. I don't like paying extra for entertainment. I wish you had good vegan food options.

SEA
IAD
Excellent 8.0

Chargers didn't work on either flight

Thu, Sep 27
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
26h 25m
Mon, Oct 1
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
21h 02m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MDT
MCO
Good 7.6

No info. Why it was delayed. No apologies. No free drinks, nothing. Delayed 2 hours.

DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

DEN
SLC
Excellent 8.0

I liked the fairs. plane was nice friendly crew

My wife and I didn't get to sit together No drinks, peanuts Seated next to a 400 pound women who had to used 1/4 of my seat

RDU
MSY
Good 6.3

Crew was great. Tickets great price

I was surprised to pay for carry on. Raise the price $40 and make it free. All drinks had a cost...$2.99 for juice? Crazy

BNA
PHL
Good 6.0

They charged extra for everything. $45 for a checked bag, $3.00 for a can of soda or snacks and up from there.

Fri, Sep 21
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
8h 45m
Sat, Sep 29
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
7h 51m
Trip: 9 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 19,595 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
PBI
LGA
Excellent 10.0

Boarding was on time; flight departures on time and arrived earlier than expected! Pilot told us exactly what was the status and gave us updates; cabin was well air conditioned; flight attendants were friendly; bags came out very quick! Very nice flight

JFK
MXP
Excellent 8.0

The flight was very smooth and the landing also was very good. The selection of movie are plenty.

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

LAX
TUS
Okay 5.6

The bag service

The flight delays

LGA
PBI
Excellent 10.0

There were many delays and cancellations due to bad thunderstorms at LGA. Despite a few hours delayed (because the airport was closed due to the storm), the flight was still schedule to leave! I was very happy about that. They did issue waivers for those who could not make the later time. Once delta got the ok to fly.. The flight left the gate very fast and we arrived and exited the plane super fast too. The process was so efficient and quick, I did not feel the waiting period. The flight attendance were so happy and positive, they made he flight very enjoyable. Great job delta!

Tue, Sep 4
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
15h 01m
Wed, Sep 12
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
15h 30m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Sep 6
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
9h 37m
Sat, Sep 22
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
7h 51m
Trip: 17 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

JAX
CLT
Good 6.0

Bumpy

ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

AMS
DFW
Excellent 9.0

Great movies and food

Being delayed

IAD
CLT
Excellent 10.0

The flight was on time

Tiny bathrooms

Mon, Oct 15
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 43m
Tue, Oct 23
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 29m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Sep 6
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
26h 25m
Tue, Sep 11
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
21h 02m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

DEN
SLC
Excellent 8.0

I liked the fairs. plane was nice friendly crew

My wife and I didn't get to sit together No drinks, peanuts Seated next to a 400 pound women who had to used 1/4 of my seat

RDU
MSY
Good 6.3

Crew was great. Tickets great price

I was surprised to pay for carry on. Raise the price $40 and make it free. All drinks had a cost...$2.99 for juice? Crazy

SAT
CLT
Excellent 10.0

Easy

PHL
SJU
Okay 5.6

We had an uneventful flight

Didn’t depart until 1055 pm. One hour later than scheduled

Sat, Oct 13
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
5h 12m
Tue, Oct 16
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 02m
Trip: 4 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 46 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SEA
IAD
Excellent 10.0

The staff was really friendly, easy boarding, great fast baggage claim. overall great!

SEA
IAD
Excellent 9.3

Alaska Airlines had a very comfortable flight with great attendants and power to charge all your devices.

The wifi service was really poor. I paid 49.99 for Gogo and I got the service of less than a 56.k modem.

SEA
IAD
Good 6.0

Wifi didn't work. Very dissappointing.

SEA
IAD
Excellent 9.3

Usually we fly United on a direct flight to PDX. That flight is no longer available so we chose Alaska to Seattle. Their entertainment and internet actually works making them a better option than United. Flights were on time, crew was friendly, and the aircraft was clean. No complaints with Alaskan, and actually happy to change airlines after years of being with United even though it is not a direct flight to our destination.

SEA
IAD
Excellent 8.6

The crew was extremely pleasant and genuinely accommodating. (and USB ports on every seat?!

No cash-handling for meals and services... (but that's my fault for assuming it would be cash only).

Thu, Sep 20
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
4h 58m
Sat, Oct 20
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
8h 02m
Trip: 31 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 19,595 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
EWR
ATL
Mediocre 2.0

Boarding issues cause delay after plane had to be replaced People were double booked Then land awaited on tarmac because of no ground crew Caused me to miss my next flight

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

PBI
LGA
Excellent 10.0

Boarding was on time; flight departures on time and arrived earlier than expected! Pilot told us exactly what was the status and gave us updates; cabin was well air conditioned; flight attendants were friendly; bags came out very quick! Very nice flight

LGA
PBI
Excellent 10.0

There were many delays and cancellations due to bad thunderstorms at LGA. Despite a few hours delayed (because the airport was closed due to the storm), the flight was still schedule to leave! I was very happy about that. They did issue waivers for those who could not make the later time. Once delta got the ok to fly.. The flight left the gate very fast and we arrived and exited the plane super fast too. The process was so efficient and quick, I did not feel the waiting period. The flight attendance were so happy and positive, they made he flight very enjoyable. Great job delta!

JFK
CUN
Okay 5.6

Flight was delayed.

Fri, Sep 7
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
7h 21m
Sun, Sep 23
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
7h 51m
Trip: 17 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 32,923 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
MCO
Excellent 8.0

Great crew, on-time arrival, quick boarding

Crowded seats in the back of the plane, Low quality and bland snack options

MSY
CLT
Excellent 9.0

organized boarding, quick and professional, flight crew was awesome, very comfortable flight, much appreciated no

No entertainment options on 2+ hour flight. Would have been nice to have.

LAX
ORD
Excellent 8.6

Pilot was informative.

DFW
MCO
Good 7.0

Seats were nice and enjoyed the entertainment. Late flight meant loads of open seats and everyone was very happy about that.

Delayed a half hour to board because flight attendants other flight was late getting in, but they kept us informed the entire time. Wasn’t their faults. Once we were on the plane, our flight was delayed for an hour, once again the pilots kept us informed and it wasn’t their faults. But it was kinda annoying.

CLT
DAB
Excellent 10.0

The flight was on time and I was upgraded to First Class!

Mon, Sep 17
SEA
Seattle/Tacoma Intl
IAD
Washington Dulles Intl
26h 25m
Mon, Sep 24
IAD
Washington Dulles Intl
SEA
Seattle/Tacoma Intl
21h 02m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 35,045 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
STL
Excellent 8.0

Plane was comfortable and clean

Nothing

SAT
CLT
Excellent 10.0

Easy

BNA
PHL
Good 6.0

They charged extra for everything. $45 for a checked bag, $3.00 for a can of soda or snacks and up from there.

DEN
SLC
Excellent 8.0

I liked the fairs. plane was nice friendly crew

My wife and I didn't get to sit together No drinks, peanuts Seated next to a 400 pound women who had to used 1/4 of my seat

ATL
DEN
Good 6.0

Liked the smooth flight and newness of plane.

Narrow seating. I even upgraded to stretch seating but couldn’t tell! Cranberry juice was $2.99. But the BIG thing is that my luggage never made it onto the plane. Having to change all my plans due to lost luggage. Ugh

*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.

Forgot password?

Enter the email associated with your account in the field below and we'll email you a link to reset your password.

Cancel