Cheap flights from Seattle (SEA) to Dulles Intl (IAD) from $139

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — IAD
may. 29 — jun. 51

The best prices from Seattle/Tacoma Intl to Washington, D.C. Dulles Intl are usually found in January or February, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Seattle to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated mayo 24, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$235

One-way from

$169
High demand for flights, 19% potential price rise
Best time to find cheap flights, 25% potential price drop
From Seattle/Tacoma Intl to Washington, D.C. Dulles Intl
One-way flight from Seattle/Tacoma Intl to Washington, D.C. Dulles Intl

What is the cheapest day to fly round-trip from Seattle to Washington, D.C. Dulles Intl Airport?

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 22% on the overall cost on flights from Seattle to Washington, D.C. Dulles Intl Airport.

How far in advance should I book a flight from Seattle to Washington, D.C. Dulles Intl Airport?

To save on the cost of your flight from Seattle to Washington, D.C. Dulles Intl Airport, book at least 58 days before your planned departure. Booking around this time can save you about 93% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $452 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $635.

What is the cheapest month to fly from Seattle to Washington, D.C. Dulles Intl Airport?

February can be a great time to fly to Washington, D.C. Dulles Intl Airport from Seattle with a flight ticket averaging about $401. Cheapflights users have found deals in the month of February for as cheap as $125. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Seattle to Washington, D.C. Dulles Intl Airport (SEA - IAD)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Washington, D.C. Dulles Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight at noon.

Cheap Sun Country Air flights from Seattle to Dulles Intl

Explore cheap flight options specifically provided by Sun Country Air for the route between Seattle and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
Peruse some of the lowest-priced Sun Country Air flights we've found from Seattle to Washington, D.C.. Make sure to check back often as deals are often changing.
mié. 6/55:15 pmSEA - IAD
1 stop14h 58mSun Country Air
mié. 6/1211:16 amIAD - SEA
1 stop8h 26mSun Country Air
Deal found 5/23$275
lun. 6/35:05 pmSEA - IAD
1 stop15h 03mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/23$280
mar. 6/115:20 pmSEA - IAD
1 stop14h 06mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Deal found 5/23$284
lun. 6/35:05 pmSEA - IAD
1 stop15h 03mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$294
mar. 6/411:45 amSEA - IAD
1 stop19h 36mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/23$295
lun. 6/35:05 pmSEA - IAD
1 stop15h 03mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$304
vie. 7/1211:59 pmSEA - IAD
1 stop18h 38mSun Country Air
lun. 7/1511:33 amIAD - SEA
1 stop14h 20mSun Country Air
Deal found 5/22$305
lun. 6/176:02 pmSEA - IAD
1 stop13h 55mSun Country Air
mar. 6/186:10 pmIAD - SEA
1 stop18h 12mSun Country Air
Deal found 5/23$309
mié. 7/1011:59 pmSEA - IAD
1 stop8h 18mSun Country Air
dom. 7/1412:27 pmIAD - SEA
1 stop8h 05mSun Country Air
Deal found 5/22$310

Cheap Delta flights from Seattle to Dulles Intl

Explore cheap flight options specifically provided by Delta for the route between Seattle and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
Have a look at some of the cheapest available Delta flights departing from Seattle and landing in Washington, D.C.. Ensure the flight price, dates, time, and airline match your criteria before you book.
mié. 8/2810:00 pmSEA - IAD
Nonstop5h 05mDelta
mar. 9/37:00 amIAD - SEA
Nonstop5h 34mDelta
Deal found 5/23$277
jue. 9/198:05 amSEA - IAD
Nonstop5h 06mDelta
mar. 9/245:20 pmIAD - SEA
Nonstop5h 52mDelta
Deal found 5/22$317
vie. 6/149:55 pmSEA - IAD
Nonstop5h 05mDelta
dom. 6/164:54 pmIAD - SEA
1 stop8h 30mDelta
Deal found 5/23$413
vie. 10/2510:00 pmSEA - IAD
Nonstop4h 56mDelta
dom. 10/276:15 amIAD - SEA
1 stop9h 38mDelta
Deal found 5/23$434
mié. 5/2912:40 amSEA - IAD
1 stop7h 25mDelta
mar. 6/117:30 amIAD - SEA
Nonstop5h 44mDelta
Deal found 5/23$559
dom. 6/212:40 amSEA - IAD
1 stop7h 25mDelta
mié. 6/127:30 amIAD - SEA
Nonstop5h 44mDelta
Deal found 5/22$578
mié. 5/2912:40 amSEA - IAD
1 stop7h 25mDelta
mar. 6/116:22 amIAD - SEA
1 stop9h 34mDelta
Deal found 5/23$607
mar. 5/2810:22 pmSEA - IAD
Nonstop5h 03mDelta
mié. 6/57:31 amIAD - SEA
Nonstop5h 49mDelta
Deal found 5/22$613
mar. 5/2810:22 pmSEA - IAD
Nonstop5h 03mDelta
jue. 5/307:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 5/23$636

Cheap Seattle to Dulles Intl flights in May & June 2024

Find cheap flight options from Seattle to Dulles Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,725,499 searches. Prices were last updated on mayo 24, 2024.
Scroll through some of the best deals on flights from Seattle to Washington, D.C. in 2024. Check back regularly for other flight deals.
mar. 6/115:20 pmSEA - IAD
1 stop14h 06mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Deal found 5/23$284
jue. 6/136:18 pmSEA - IAD
1 stop15h 39mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Deal found 5/22$286
jue. 6/1310:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/22$289
sáb. 6/19:10 amSEA - IAD
1 stop8h 37mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop14h 40mSun Country Air
Deal found 5/22$290
mar. 6/1810:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 7/2210:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/22$292
mar. 6/1811:59 pmSEA - IAD
1 stop6h 56mUnited Airlines
lun. 7/2210:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/22$293
vie. 6/145:55 pmSEA - IAD
1 stop16h 02mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Deal found 5/23$294
lun. 6/35:05 pmSEA - IAD
1 stop15h 03mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/22$295
mié. 6/55:15 pmSEA - IAD
1 stop14h 58mMultiple Airlines
lun. 6/1010:50 amIAD - SEA
2 stops25h 09mMultiple Airlines
Deal found 5/22$297

Seattle to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
Scroll through some of the best deals on flights from Seattle to Washington, D.C. in 2024. Check back regularly for other flight deals.
mar. 8/1311:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
mar. 8/207:09 pmIAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 5/23$283
mar. 6/115:20 pmSEA - IAD
1 stop14h 06mSun Country Air
dom. 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Deal found 5/23$284
mié. 9/184:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
mié. 9/254:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 5/23$286
jue. 8/156:35 pmSEA - IAD
1 stop7h 50mUnited Airlines
sáb. 8/245:26 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 5/23$288
vie. 6/1410:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$289
mar. 8/135:45 pmSEA - IAD
1 stop8h 42mAlaska Airlines
mar. 8/207:09 pmIAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 5/23$292
mié. 6/269:28 amSEA - IAD
2 stops27h 06mMultiple Airlines
mié. 7/311:23 amIAD - SEA
1 stop14h 31mMultiple Airlines
Deal found 5/22$293
sáb. 6/19:10 amSEA - IAD
1 stop8h 37mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/22$294
mar. 6/411:45 amSEA - IAD
1 stop19h 36mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/23$295

Non-stop flights to Dulles Intl from Seattle

Discover non-stop flight options from Seattle to Dulles Intl. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
For a shorter flight, select one of these non-stop flights from Seattle to Washington, D.C.. If you're looking for other options for flights from Seattle to Washington, D.C., make sure to update the search form at the top of page.
mar. 8/1311:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
mar. 8/207:09 pmIAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 5/23$283
vie. 6/1410:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$289
jue. 7/2511:20 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 7/2910:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$307
mié. 7/1010:30 pmSEA - IAD
Nonstop4h 59mUnited Airlines
dom. 7/1410:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$313
lun. 7/2210:30 pmSEA - IAD
Nonstop4h 59mUnited Airlines
vie. 7/2610:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$318
jue. 8/111:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
lun. 8/126:37 pmIAD - SEA
Nonstop5h 53mAlaska Airlines
Deal found 5/23$323
jue. 6/2010:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
lun. 6/2410:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$336
dom. 6/1610:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
mié. 6/1910:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$337
vie. 6/1410:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
dom. 6/1610:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 5/23$342

Seattle to Dulles Intl flights leaving soon

Find last-minute flight options from Seattle to Dulles Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
Consider one of these great deals we found on last-minute flights from Seattle to Washington, D.C.. To prevent any unwanted surprises, users should verify their flight info before booking.
sáb. 6/19:10 amSEA - IAD
1 stop8h 37mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/22$294
vie. 5/3111:59 pmSEA - IAD
1 stop17h 48mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$315
dom. 6/211:59 pmSEA - IAD
1 stop13h 32mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$324
dom. 6/211:59 pmSEA - IAD
1 stop13h 32mSun Country Air
mar. 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Deal found 5/23$325
vie. 5/315:40 pmSEA - IAD
1 stop24h 07mSun Country Air
lun. 6/35:25 pmIAD - SEA
1 stop20h 15mSun Country Air
Deal found 5/23$330
sáb. 6/19:10 amSEA - IAD
1 stop8h 37mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$335
dom. 6/211:59 pmSEA - IAD
1 stop13h 32mSun Country Air
lun. 6/1010:50 amIAD - SEA
1 stop9h 18mSun Country Air
Deal found 5/23$345
mié. 5/295:45 pmSEA - IAD
1 stop13h 47mSun Country Air
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mSun Country Air
Deal found 5/23$355
dom. 6/29:40 pmSEA - IAD
2 stops34h 28mMultiple Airlines
jue. 6/612:03 pmIAD - SEA
1 stop13h 51mMultiple Airlines
Deal found 5/23$362

One-way flights to Dulles Intl from Seattle

Search for one-way flight options from Seattle to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
Take a look at some of the best available options we've come across on one-way flights from Seattle to Washington, D.C.. Users can also find round-trip Seattle to Washington, D.C. flights by using the search form above.
mié. 6/1911:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/23$139
lun. 6/2411:59 pmSEA - IAD
1 stop7h 31mSun Country Air
Deal found 5/23$145
mar. 6/1811:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/23$146
lun. 6/109:28 amSEA - IAD
2 stops22h 09mMultiple Airlines
Deal found 5/23$148
mar. 6/411:45 amSEA - IAD
1 stop19h 36mSun Country Air
Deal found 5/22$153
lun. 6/1711:59 pmSEA - IAD
1 stop6h 56mUnited Airlines
Deal found 5/23$154
dom. 6/211:59 pmSEA - IAD
1 stop13h 32mSun Country Air
Deal found 5/23$155
lun. 7/811:59 pmSEA - IAD
1 stop7h 58mSun Country Air
Deal found 5/22$156
mar. 6/49:40 pmSEA - IAD
2 stops34h 33mMultiple Airlines
Deal found 5/22$158

Find flights from Seattle to Dulles Intl within your budget

Customize your flight search to find flights from Seattle to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$275 - $296

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mié. 6/5

1 stop14h 58m

Washington, D.C. Dulles Intl

mié. 6/12

1 stop8h 26m

$275

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mié. 8/28

Nonstop5h 05m

Washington, D.C. Dulles Intl

mar. 9/3

Nonstop5h 34m

$277

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

lun. 6/3

1 stop15h 03m

Washington, D.C. Dulles Intl

mar. 6/11

1 stop7h 45m

$280

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mar. 8/13

Nonstop4h 52m

Washington, D.C. Dulles Intl

mar. 8/20

Nonstop5h 51m

$283

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mié. 9/18

Nonstop4h 53m

Washington, D.C. Dulles Intl

mié. 9/25

1 stop10h 26m

$286

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

jue. 8/15

1 stop7h 50m

Washington, D.C. Dulles Intl

sáb. 8/24

Nonstop5h 48m

$288

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

vie. 6/14

Nonstop4h 59m

Washington, D.C. Dulles Intl

lun. 6/17

Nonstop5h 44m

$289

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mié. 6/26

2 stops27h 06m

Washington, D.C. Dulles Intl

mié. 7/3

1 stop14h 31m

$293

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

mar. 8/13

1 stop9h 15m

Washington, D.C. Dulles Intl

mar. 8/20

1 stop9h 06m

$296

Flights are sorted by cheapest first

Deals found on 5/23

When is the best time to book a flight from Seattle to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Dulles Intl. Price data was last updated on May 22, 2024.
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from Seattle to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Dulles Intl. Price data was last updated on May 19, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated mayo 24, 2024.
Get a feel of what it's like to fly with Sun Country Air, Delta and Alaska Airlines from Seattle to Washington, D.C. by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very good
9,175 reviews
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.0
Very good
10,561 reviews
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.4
Good
10,845 reviews
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.3
Good
14,388 reviews
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.2
Good
608 reviews
8.1
Very good
9,175 reviews

Crew

8.6

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.1

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Seattle to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 15 flights from Seattle/Tacoma Intl to Washington, D.C. Dulles Intl per day from 4 different airlines.

  • Can I find flights from Seattle to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

    Yes, there are multiple flights from Seattle to Washington, D.C. Dulles Intl Airport for under $300. The cheapest flight booked recently is on Sun Country Air for just $275, but on average you can expect to pay $291.

  • Are there nonstop flights from Seattle to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

    Cheapflights has at least 20 direct flights from Seattle to Washington, D.C. Dulles Intl Airport under $300. A good price for a nonstop flight from Seattle to Washington, D.C. Dulles Intl Airport is less than $339.

  • Are there last-minute flights available from Seattle to Washington, D.C. Dulles Intl Airport for under $300?

    There are currently 20+ open flights from Seattle to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $300.

  • What days are nonstop flights available from Seattle to Washington, D.C. Dulles Intl Airport?

    Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

  • How many flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average per day?

    Per day, 17 flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average.
    Morning (6am - Noon) - 35% of flight departures
    Afternoon (Noon - 6pm) - 18% of flight departures
    Evening (6pm - Midnight) - 47% of flight departures

  • How long is the flight from Seattle to Washington, D.C. Dulles Intl Airport?

    Airlines like Sun Country Air, Delta, and Alaska Airlines fly from Seattle to Washington, D.C. Dulles Intl Airport in about 4h 52m. The time it takes to get you to your destination can typically vary by up to 10h 06m. The distance between Seattle and Washington, D.C. Dulles Intl Airport is about 2313 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Seattle to Washington, D.C. Dulles Intl Airport round-trip?

    Sun Country Air, at $275, was found to be the cheapest airline from Seattle to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. Sun Country Air is 30% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Seattle to Washington, D.C. Dulles Intl Airport are United Airlines ($139), Sun Country Air ($145), and Alaska Airlines ($160).

  • What are the most reliable airlines from Seattle to Washington, D.C. Dulles Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Washington, D.C. Dulles Intl Airport on time: Scandinavian Airlines (96%), Brussels Airlines (93%), Lufthansa (93%).

  • What are the cheapest flights from Seattle to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $144. While the most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl) can be booked for $275 on average our data indicates $1,092 when flying from Seattle to Washington, D.C. Dulles Intl Airport.

  • What does SEA to IAD mean?

    SEA and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to IAD refers to a flight route from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Seattle to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Dulles Intl.

  • Can I find deals for business class flights from Seattle to Dulles Intl?

    Yes. Cheapflights offers flight deals from Seattle to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Dulles Intl that allow pets onboard?

    Many airlines flying from Seattle to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Dulles Intl?

    Yes, you can often find last-minute deals on Seattle to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Seattle to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 5/23.

  • What are the most popular airlines that fly from Seattle to Washington, D.C. Dulles Intl Airport?

  • When is the best time to book a flight from Seattle to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Seattle to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $394). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 4 airlines flying from Seattle to Dulles Intl

Discover the top 4 airlines that operate flights from Seattle to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,725,499 searches. Data last updated mayo 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$156Average$373FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$159Average$397FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapest$213Average$407FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$353Average$488FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Search flights from Seattle to Dulles Intl by cabin class

Find flights from Seattle to Dulles Intl, based o