Find Cheap Flights from Washington to Seattle/Tacoma Intl (WAS - SEA)

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Wed 1/24
Wed 1/31
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Good to Know

Low Season:
October
Best time to beat the crowds
2%
expected price decrease
High Season:
December
Most popular time to fly
7%
expected price increase
Average Price:
$1134
(avg. price over the last 2 weeks)
Good Deal:
$1090
or less (round trip)

When to Book Flights from Washington to Seattle/Tacoma Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

The cheapest flight from Washington to Seattle/Tacoma Intl was found 15 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 50% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Washington to Seattle/Tacoma Intl Flights

How long does a flight from Washington to Seattle/Tacoma Intl take?
An average nonstop flight takes 5h 50m, covering a distance of 2321 miles.
How many flights are there between Washington and Seattle/Tacoma Intl?
There are 297 (nonstop) flights between Washington and Seattle/Tacoma Intl per week, averaging 44 per day.
Which airlines provide the cheapest flights from Washington to Seattle/Tacoma Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($144), Multiple Airlines ($247) and Alaska Airlines ($277).
Do I need a passport to fly between Washington and Seattle/Tacoma Intl?
No.
Which airlines fly most frequently between Washington and Seattle/Tacoma Intl?
Alaska Airlines (13 times daily), United (5 times daily), Copa Airlines (3 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Washington to Seattle/Tacoma Intl?
For Washington to Seattle/Tacoma Intl, Tuesday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Seattle/Tacoma Intl back to Washington, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

Airports
Origin
Washington
$167
only
$167
$144
only
$144
Destination
Seattle
$144
only
$144
Tue, Jan 30
DCA
SEA
18h 56m
Wed, Jan 31
SEA
DCA
15h 53m
Trip: 2 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
LAX
Excellent 10.0

Very like it !

SFO
ATL
Mediocre 2.0

Nothing

Everything was horrible!

MCO
TTN
Okay 4.0

Quick departure and TTN

Paying for seats for no reason other than profit when there were lots empty- paying more for carry on than checked bags- how about a free cup of coffee? Would cost u a penny

MIA
PHL
Excellent 8.0

Seats don’t recline which is nice for tall people who don’t like having their knees smashed

You have to pay extra for a carry on, but I was able to bring my backpack on full of stuff for free so that’s good.

MCO
GRR
Excellent 10.0

Early departure. Non-stop.

Wed, Jan 31
DCA
SEA
12h 32m
Sat, Feb 10
SEA
DCA
8h 23m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 17
IAD
SEA
6h 15m
Tue, Feb 27
SEA
IAD
4h 50m
Trip: 11 days
9.0ExcellentShow reviews
Overall 9.0 Excellent
Based on 37 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
IAD
SEA
Okay 5.3

Everything was efficient and quick. Plane was clean. Crew was responsive.

No entertainment. Temp of plane was warmer than usual and above head fan didn't seem to work.

IAD
SEA
Excellent 10.0

Crew friendliness, space, wifi and entertainment options

Food

SEA
ANC
Excellent 10.0

Everything

N/A

IAD
SEA
Good 7.0

I would like to possibly see some better food options maybe for people who can not consume dairy. With the many different cheese platters, I was very uninterested. I had an early flight and thought I'd be able to eat something with a sort of substance. I was quite disappointed, I guess I'll have to be the annoying customer who brings chipotle on the plane next time.

IAD
SEA
Excellent 10.0

Good service. Good food options. Reliable flight. Easy check in & quick baggage pick up. Thx.

Too much heat on flight.

Thu, Feb 8
DCA
SEA
10h 26m
Mon, Feb 12
SEA
DCA
15h 53m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
MCO
Okay 4.0

The staff was nice

The seats are just awful

SLC
ATL
Excellent 10.0

I had my own row the whole trip.

ATL
LAX
Excellent 10.0

Very like it !

RSW
DEN
Good 7.0

No access to WiFi. Food selection. No entertainment

SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

Tue, Jun 12
IAD
SEA
5h 50m
Tue, Jun 19
SEA
IAD
5h 15m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15421 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
TYS
ATL
Excellent 8.4

Everything went well...on time, quick boarding and free gate check of bag.

ATL
TYS
Excellent 9.5

Flight less than 2/3 full, lots of room for comfort. On time, no need to gate check carry on.

nothing, it was great.

JFK
CUN
Okay 4.0

The flight was delayed for 4 hours.

JFK
SLC
Good 6.3

Too many turbulences !!!

MSP
CUN
Good 6.3

On time, pretty friendly crew

Too small a plane for that long a trip. Bathrooms were VERY small & rare.

Fri, Feb 2
DCA
SEA
12h 32m
Mon, Feb 5
SEA
DCA
15h 53m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

MKE
MCO
Okay 4.0

The staff was nice

The seats are just awful

RSW
DEN
Good 7.0

No access to WiFi. Food selection. No entertainment

CLT
PHL
Excellent 10.0

Crew took great care of passengers as we were delayed 2 hours on the tarmac for deicing. Not their fault but the company gave passengers a $50 certificate for our late arrival.

SLC
ATL
Excellent 10.0

I had my own row the whole trip.

Tue, Feb 13
DCA
SEA
10h 26m
Tue, Feb 20
SEA
DCA
17h 59m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
CLT
PHL
Excellent 10.0

Crew took great care of passengers as we were delayed 2 hours on the tarmac for deicing. Not their fault but the company gave passengers a $50 certificate for our late arrival.

MIA
PHL
Excellent 8.0

Seats don’t recline which is nice for tall people who don’t like having their knees smashed

You have to pay extra for a carry on, but I was able to bring my backpack on full of stuff for free so that’s good.

MKE
MCO
Okay 4.0

The staff was nice

The seats are just awful

SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

SFO
ATL
Mediocre 2.0

Nothing

Everything was horrible!

Sun, Apr 1
DCA
SEA
10h 15m
Tue, Apr 3
SEA
DCA
8h 29m
Trip: 3 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 53951 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
IAH
DFW
Good 6.0

Short flight, so no food or entertainment.

MEM
IAH
Excellent 10.0

Terminal was great, flight was great, crew was fruendly

No free movie on thos flight

SEA
SFO
Excellent 9.3

Nothing great, nothing bad. took off and landed on time.

paced seats, nit enough room for carry ons.

BRU
IAD
Good 7.0

Good food, entertainment options, communication from pilot

none of the flight attendants seemed to be friendly- literally all of them were neutral or slightly rude at best. Not impressed.

IND
EWR
Good 7.3

Crew was outstanding . Boarding was easy. Ahead of schedule arrival

Return to terminal required a bus and then off loading like cattle for sale. Came in through maintenance area. One hour from landing to baggage claim. Terrible!

Tue, Mar 13
DCA
SEA
10h 13m
Tue, Mar 20
SEA
DCA
18h 09m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
MCO
Okay 4.0

The staff was nice

The seats are just awful

MCO
GRR
Excellent 10.0

Early departure. Non-stop.

AUS
IAD
Excellent 8.0

I reserved seats for both flights @ 13.00 per seat (2) and never got the seats I reserved.

SLC
ATL
Excellent 10.0

I had my own row the whole trip.

SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

Wed, Apr 11
IAD
SEA
8h 32m
Wed, Apr 18
SEA
IAD
8h 02m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
PHL
Excellent 8.0

Seats don’t recline which is nice for tall people who don’t like having their knees smashed

You have to pay extra for a carry on, but I was able to bring my backpack on full of stuff for free so that’s good.

MKE
MCO
Okay 4.0

The staff was nice

The seats are just awful

ATL
LAX
Excellent 10.0

Very like it !

CLT
PHL
Excellent 10.0

Crew took great care of passengers as we were delayed 2 hours on the tarmac for deicing. Not their fault but the company gave passengers a $50 certificate for our late arrival.

MCO
TTN
Okay 4.0

Quick departure and TTN

Paying for seats for no reason other than profit when there were lots empty- paying more for carry on than checked bags- how about a free cup of coffee? Would cost u a penny

Tue, Apr 10
DCA
SEA
9h 47m
Wed, Apr 11
SEA
DCA
8h 02m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 2
DCA
SEA
10h 35m
Sat, May 5
SEA
DCA
6h 49m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 17
DCA
SEA
21h 17m
Tue, Apr 24
SEA
DCA
18h 02m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
AUS
IAD
Excellent 8.0

I reserved seats for both flights @ 13.00 per seat (2) and never got the seats I reserved.

CLT
PHL
Excellent 10.0

Crew took great care of passengers as we were delayed 2 hours on the tarmac for deicing. Not their fault but the company gave passengers a $50 certificate for our late arrival.

RSW
DEN
Good 7.0

No access to WiFi. Food selection. No entertainment

MIA
PHL
Excellent 8.0

Seats don’t recline which is nice for tall people who don’t like having their knees smashed

You have to pay extra for a carry on, but I was able to bring my backpack on full of stuff for free so that’s good.

SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

Wed, Jun 13
IAD
SEA
5h 50m
Tue, Jul 31
SEA
IAD
5h 15m
Trip: 49 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15421 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
ATL
MEX
Excellent 10.0

In some Delta flights that I had in the past the plane was just ok, not bad, not good. But this plane ATL-MEX was great, very nice and conformable plane, it looks and feels excellent!

DTW
PVR
Excellent 8.6

Easy flight from check-in to boarding to deplaning.

Nothing really! No entertainment and nothing but almonds eaten.

JFK
SLC
Good 6.3

Too many turbulences !!!

TYS
ATL
Excellent 8.4

Everything went well...on time, quick boarding and free gate check of bag.

ORD
ATL
Excellent 10.0

My flight was great. Boarding was easy and the seats were comfortable.

Wed, Jan 24
IAD
SEA
8h 32m
Fri, Jan 26
SEA
IAD
9h 20m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27489 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PHX
EWR
Good 6.0

Bought a sandwich which was old ...

MSP
ORD
Good 6.0

eh. not enough space, like most airlines these days. Flight wasn't long enough to hate it though.

CLE
ORD
Excellent 9.3

Like my AA rides > 90% of the time. The usual prob is sketchy gogo service.

Nogo gogo

SAN
PHX
Excellent 9.0

The friendly and attentive flight staff.

CLT
LAX
Good 6.0

Staff was friendly and genuine

They didn’t load enough “for purchase” food. This was a six hour flight! They has no options left excepthummus and chips. This is second flight on American this year where they don’t supply the plane appropriately.

Tue, Jan 30
IAD
SEA
18h 46m
Wed, Jan 31
SEA
IAD
10h 13m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jul 18
IAD
SEA
5h 50m
Tue, Jul 24
SEA
IAD
5h 15m
Trip: 7 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15421 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
ATL
TYS
Excellent 9.5

Flight less than 2/3 full, lots of room for comfort. On time, no need to gate check carry on.

nothing, it was great.

ATL
MEX
Excellent 10.0

In some Delta flights that I had in the past the plane was just ok, not bad, not good. But this plane ATL-MEX was great, very nice and conformable plane, it looks and feels excellent!

SJD
ATL
Good 7.6

Our Delta plane was brand spanking new. Everything worked and the inflight entertainment system was fantastic with many movies to choose from, free headphones, games, tv shows, etc. The crew was polite and the seating at least as comfortable as expected for a 4 hour flight.

The restrooms in the rear of the plane were remarkably small, even by airline standards. I'm a somewhat larger person and I fit, but I know a lot of people who would literally not be able to fit on the toilet without touching both of the sidewalls or risk getting stuck in there. The boarding process at San Jose Del Cabo was the most ridiculous setup I've ever experienced. There were numerous flights boarding out of the same gates and at least 3 or 4 lines for different destinations forming on a ramp just outside the gates. There were guys with signs trying to herd people into the correct lines and then loading the people onto buses which took you out to the planes. The planes were loading from both the front and rear doors and people were getting tangled up inside because of the haphazard loading process. Very easy for a person to end up on an incorrect plane!!

TYS
ATL
Excellent 8.4

Everything went well...on time, quick boarding and free gate check of bag.

ATL
SJD
Excellent 8.0

On time departure, actually got to Cabo early.

The seat in front of mine had a broken reclining lock mechanism and the passenger kept trying to switch from recline to sitting up and it wouldn't latch in the upright position, so he kept jerking the seatback up and down for the entire 4 hour flight. Also the rows were so tight, and seatbacks were so close together, that the reclining seat in front of me was 6 inches from my face.

Fri, May 11
IAD
SEA
6h 00m
Sun, May 13
SEA
IAD
5h 05m
Trip: 3 days
9.0ExcellentShow reviews
Overall 9.0 Excellent
Based on 37 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SEA
ANC
Excellent 10.0

Everything

N/A

IAD
SEA
Excellent 10.0

Crew friendliness, space, wifi and entertainment options

Food

IAD
SEA
Good 7.0

I would like to possibly see some better food options maybe for people who can not consume dairy. With the many different cheese platters, I was very uninterested. I had an early flight and thought I'd be able to eat something with a sort of substance. I was quite disappointed, I guess I'll have to be the annoying customer who brings chipotle on the plane next time.

IAD
SEA
Excellent 10.0

Good service. Good food options. Reliable flight. Easy check in & quick baggage pick up. Thx.

Too much heat on flight.

IAD
SEA
Okay 4.3

Ok, crew was ok, we arrived an hour early. Everything else was terrible to bad. No food in 6 hr flight?! Given a single tiny bite sized cookie, and only 2 small glasses of water, soda or juice. I'm a tall size 0, who still found the seats uncomfortably tight. WIFI was not included. We had to pay & pre load their app before the flight. Costumer service gets 2 out of 5 rating, giving 1 for showing up 2 for being dolled up

Wed, Apr 11
DCA
SEA
16h 53m
Tue, Apr 17
SEA
DCA
12h 30m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33623 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MCI
DEN
Excellent 10.0

Staff was great. Baggage and service was handled well.

SLC
ATL
Excellent 10.0

I had my own row the whole trip.

CLT
PHL
Excellent 10.0

Crew took great care of passengers as we were delayed 2 hours on the tarmac for deicing. Not their fault but the company gave passengers a $50 certificate for our late arrival.

MCO
TTN
Okay 4.0

Quick departure and TTN

Paying for seats for no reason other than profit when there were lots empty- paying more for carry on than checked bags- how about a free cup of coffee? Would cost u a penny

SFO
ATL
Mediocre 2.0

From checkin to in flight service. It was horrible. The 5 hours flight with nothing, no tv, movie, nor complimentary snacks or drink. Everything need to be purchased, even a small orange juice cup will cost about $4. The only free is a cup of ice water. When I asked for another water, they told me they only give 2 cups of 2 waters. If I need more, I need to purchase it. Omg! Really? I seriously think they hire those stewardesswith a minimum wage and they have to sale stuff for commission. Why would they need 5 stewardesses when they didn’t even serve.

Tue, Mar 6
IAD
SEA
5h 53m
Tue, Mar 13
SEA
IAD
4h 48m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Show more results

Washington to Seattle/Tacoma Intl Flight Information

Avg. Flight Duration 5h 30m
Flights Arrive in Seattle/Tacoma Intl
Flights Depart from Washington
Flight Price $144
Distance 2321 miles
Airlines Frontier, Alaska Airlines, Delta, United, American Airlines
*
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.

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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.