Cheap flights from Seattle (SEA) to Dulles Intl (IAD) from $109

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 4/24. 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
Apr 3 — Apr 101

The best prices from Seattle/Tacoma Intl to Washington, D.C. Dulles Intl are usually found in February or January, booked 25 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 March 29, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$234

One-way from

$154
High demand for flights, 26% potential price rise
Best time to find cheap flights, 42% 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 26% 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 43 days before your planned departure. Booking around this time can save you about 90% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $388 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $573.

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

January can be a great time to fly to Washington, D.C. Dulles Intl Airport from Seattle with a flight ticket averaging about $402. Cheapflights users have found deals in the month of January for as cheap as $128. 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 18% on your trip compared to booking a flight in the morning.

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 3,228,805 searches. Data last updated March 29, 2024.
Peruse some of the lowest-priced Delta flights we've found from Seattle to Washington, D.C.. Make sure to check back often as deals are often changing.
Fri 4/1910:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 4/237:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$257
Fri 5/310:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 5/77:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/28$266
Tue 5/1410:22 pmSEA - IAD
Nonstop5h 03mDelta
Wed 5/297:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/29$277
Tue 5/710:22 pmSEA - IAD
Nonstop5h 03mDelta
Fri 5/105:39 pmIAD - SEA
Nonstop5h 46mDelta
Deal found 3/29$283
Sun 4/2110:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 4/307:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$297
Tue 5/1410:22 pmSEA - IAD
Nonstop5h 03mDelta
Sun 6/27:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/29$317
Sat 5/118:35 amSEA - IAD
Nonstop5h 09mDelta
Mon 5/135:39 pmIAD - SEA
Nonstop5h 46mDelta
Deal found 3/29$323
Fri 5/310:30 pmSEA - IAD
Nonstop4h 55mDelta
Thu 5/97:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/28$331
Thu 5/1610:22 pmSEA - IAD
Nonstop5h 03mDelta
Tue 5/217:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/29$347

Cheap United Airlines flights from Seattle to Dulles Intl

Explore cheap flight options specifically provided by United Airlines 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 3,228,805 searches. Data last updated March 29, 2024.
Have a look at some of the cheapest available United Airlines flights departing from Seattle and landing in Washington, D.C.. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 4/234:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Thu 4/255:30 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 3/28$262
Thu 4/184:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Mon 4/226:05 pmIAD - SEA
1 stop9h 53mUnited Airlines
Deal found 3/28$271
Thu 5/21:00 pmSEA - IAD
Nonstop5h 01mUnited Airlines
Tue 5/76:00 amIAD - SEA
1 stop9h 07mUnited Airlines
Deal found 3/28$276
Wed 4/177:10 pmSEA - IAD
1 stop7h 11mUnited Airlines
Mon 7/2210:05 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 3/27$278
Thu 4/188:06 amSEA - IAD
Nonstop5h 04mUnited Airlines
Mon 4/224:03 pmIAD - SEA
1 stop9h 50mUnited Airlines
Deal found 3/28$281
Fri 4/264:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Mon 4/295:30 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 3/28$290
Thu 4/188:06 amSEA - IAD
Nonstop5h 04mUnited Airlines
Mon 4/225:30 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 3/28$300
Mon 4/297:10 pmSEA - IAD
1 stop7h 03mUnited Airlines
Fri 5/34:03 pmIAD - SEA
1 stop9h 50mUnited Airlines
Deal found 3/28$303
Thu 4/258:06 amSEA - IAD
Nonstop5h 04mUnited Airlines
Thu 5/24:03 pmIAD - SEA
1 stop9h 50mUnited Airlines
Deal found 3/28$309

Cheap Seattle to Dulles Intl flights in March & April 2024

Find cheap flight options from Seattle to Dulles Intl specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,228,805 searches. Prices were last updated on March 29, 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.
Wed 4/246:00 pmSEA - IAD
1 stop14h 37mSun Country Air
Mon 4/2911:50 amIAD - SEA
1 stop7h 35mSun Country Air
Deal found 3/28$227
Fri 4/1910:30 pmSEA - IAD
Nonstop4h 55mDelta
Thu 4/257:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$257
Tue 4/234:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Thu 4/255:30 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 3/28$262
Tue 4/3010:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 5/77:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/28$266
Wed 4/244:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Thu 4/257:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$267
Thu 4/184:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Mon 4/226:05 pmIAD - SEA
1 stop9h 53mUnited Airlines
Deal found 3/28$271
Fri 4/2610:30 pmSEA - IAD
Nonstop4h 55mDelta
Sat 5/47:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$273
Fri 4/199:44 pmSEA - IAD
1 stop8h 19mAmerican Airlines
Tue 4/236:43 amIAD - SEA
1 stop9h 04mAmerican Airlines
Deal found 3/28$274
Tue 4/304:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Wed 5/87:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$277

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 3,228,805 searches. Data last updated March 29, 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.
Wed 4/246:00 pmSEA - IAD
1 stop14h 37mSun Country Air
Mon 4/2911:50 amIAD - SEA
1 stop7h 35mSun Country Air
Deal found 3/28$227
Fri 4/1910:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 4/237:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$257
Tue 4/234:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Thu 4/255:30 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Deal found 3/28$262
Fri 5/310:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 5/77:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/28$266
Wed 4/244:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Thu 4/257:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$267
Thu 4/184:47 pmSEA - IAD
1 stop10h 46mUnited Airlines
Mon 4/226:05 pmIAD - SEA
1 stop9h 53mUnited Airlines
Deal found 3/28$271
Fri 4/264:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Mon 4/297:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$273
Fri 4/199:44 pmSEA - IAD
1 stop8h 19mAmerican Airlines
Tue 4/236:43 amIAD - SEA
1 stop9h 04mAmerican Airlines
Deal found 3/28$274
Thu 5/21:00 pmSEA - IAD
Nonstop5h 01mUnited Airlines
Tue 5/76:00 amIAD - SEA
1 stop9h 07mUnited Airlines
Deal found 3/28$276

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 3,228,805 searches. Data last updated March 29, 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.
Fri 4/1910:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 4/237:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$257
Wed 5/110:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 5/77:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/28$266
Wed 4/244:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Thu 4/257:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$267
Fri 4/264:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Mon 4/297:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$273
Tue 5/1410:22 pmSEA - IAD
Nonstop5h 03mDelta
Wed 5/297:35 amIAD - SEA
Nonstop5h 45mDelta
Deal found 3/29$277
Sat 4/274:03 pmSEA - IAD
Nonstop4h 56mAlaska Airlines
Tue 5/77:40 amIAD - SEA
Nonstop5h 40mAlaska Airlines
Deal found 3/28$282
Tue 5/710:22 pmSEA - IAD
Nonstop5h 03mDelta
Fri 5/105:39 pmIAD - SEA
Nonstop5h 46mDelta
Deal found 3/29$283
Thu 5/210:00 amSEA - IAD
Nonstop5h 04mAlaska Airlines
Mon 6/37:00 amIAD - SEA
Nonstop5h 30mAlaska Airlines
Deal found 3/28$289
Sun 4/2110:30 pmSEA - IAD
Nonstop4h 55mDelta
Tue 4/307:30 amIAD - SEA
Nonstop5h 50mDelta
Deal found 3/28$297

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 3,228,805 searches. Data last updated March 29, 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.
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Thu 4/115:20 pmIAD - SEA
2 stops18h 25mMultiple Airlines
Deal found 3/28$402
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Thu 4/115:20 pmIAD - SEA
2 stops18h 20mMultiple Airlines
Deal found 3/28$406
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Thu 4/115:20 pmIAD - SEA
2 stops18h 20mMultiple Airlines
Deal found 3/28$417
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Thu 4/117:40 amIAD - SEA
Nonstop5h 45mMultiple Airlines
Deal found 3/28$450
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Thu 4/117:40 amIAD - SEA
Nonstop5h 45mMultiple Airlines
Deal found 3/28$494
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Sun 4/148:25 amIAD - SEA
3 stops27h 20mMultiple Airlines
Deal found 3/28$506
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mMultiple Airlines
Sun 4/149:58 pmIAD - SEA
2 stops25h 31mMultiple Airlines
Deal found 3/28$508
Mon 4/86:30 pmSEA - IAD
1 stop13h 27mSun Country Air
Wed 4/1012:40 pmIAD - SEA
1 stop24h 28mSun Country Air
Deal found 3/28$515
Sun 4/711:59 pmSEA - IAD
1 stop17h 08mMultiple Airlines
Thu 4/1812:30 pmIAD - SEA
2 stops23h 10mMultiple Airlines
Deal found 3/27$536

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 3,228,805 searches. Data last updated March 29, 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.
Wed 4/246:00 pmSEA - IAD
1 stop14h 37mSun Country Air
Deal found 3/28$109
Wed 4/246:00 pmSEA - IAD
1 stop14h 37mSun Country Air
Deal found 3/28$110
Wed 5/14:45 pmSEA - IAD
1 stop15h 07mSun Country Air
Deal found 3/27$128
Mon 4/2210:30 pmSEA - IAD
Nonstop4h 55mDelta
Deal found 3/28$129
Wed 4/175:45 pmSEA - IAD
1 stop14h 52mSun Country Air
Deal found 3/28$131
Fri 4/2610:30 pmSEA - IAD
Nonstop4h 55mDelta
Deal found 3/28$134
Tue 4/910:12 pmSEA - IAD
2 stops39h 10mMultiple Airlines
Deal found 3/28$136
Mon 5/611:43 pmSEA - IAD
1 stop8h 32mAmerican Airlines
Deal found 3/28$137
Sat 4/275:15 amSEA - IAD
1 stop8h 09mAmerican Airlines
Deal found 3/28$138

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 3,228,805 searches. Data last updated March 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$227 - $291

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 4/24

1 stop14h 37m

Washington, D.C. Dulles Intl

Mon 4/29

1 stop7h 35m

$227

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 4/19

Nonstop4h 55m

Washington, D.C. Dulles Intl

Tue 4/23

Nonstop5h 50m

$257

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 4/23

1 stop10h 46m

Washington, D.C. Dulles Intl

Thu 4/25

Nonstop5h 48m

$262

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 5/3

Nonstop4h 55m

Washington, D.C. Dulles Intl

Tue 5/7

Nonstop5h 45m

$266

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 4/24

Nonstop4h 56m

Washington, D.C. Dulles Intl

Thu 4/25

Nonstop5h 40m

$267

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Thu 4/18

1 stop10h 46m

Washington, D.C. Dulles Intl

Mon 4/22

1 stop9h 53m

$271

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 4/26

Nonstop4h 56m

Washington, D.C. Dulles Intl

Mon 4/29

Nonstop5h 40m

$273

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 4/19

1 stop8h 19m

Washington, D.C. Dulles Intl

Tue 4/23

1 stop9h 04m

$274

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 5/25

Nonstop5h 12m

Washington, D.C. Dulles Intl

Fri 5/31

1 stop7h 30m

$291

Flights are sorted by cheapest first

Deals found on 3/28

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 January 28, 2024.
Booking 25 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 March 24, 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 Friday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Dulles Intl by month

Plan your trip from Seattle to Dulles Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Dulles Intl is currently $128 while a round-trip flight costs $265. Price data was last updated on March 24, 2024.

Currently, September is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Dulles Intl Airport (average of $282). Flying from Seattle to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $407). 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.

January

$308

February

$303

March

$358

April

$337

May

$337

June

$407

July

$378

August

$298

September

$282

October

$306

November

$328

December

$289

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 March 29, 2024.
Get a feel of what it's like to fly with Delta, United Airlines and Sun Country Air 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
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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
9,127 reviews
8.1
Very good
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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
11,402 reviews
8.1
Very good
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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
11,470 reviews
8.1
Very good
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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
15,181 reviews
8.1
Very good
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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
694 reviews
8.1
Very good
9,127 reviews

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.3

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 $227, but on average you can expect to pay $275.

  • 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 $299.

  • Are there last-minute flights available from Seattle to Washington, D.C. Dulles Intl Airport for under $500?

    There are currently 20+ open flights from Seattle to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $500.

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

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

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

    Per day, 12 flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average.
    Morning (6am - Noon) - 100% of flight departures

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

    Airlines like Sun Country Air, Delta, and United Airlines fly from Seattle to Washington, D.C. Dulles Intl Airport in about 4h 55m. The time it takes to get you to your destination can typically vary by up to 9h 42m. 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 $227, 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 United Airlines. Sun Country Air is 44% 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 Sun Country Air ($109), Delta ($129), and American Airlines ($137).

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

  • 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 (89%), Virgin Atlantic (82%), KLM (78%).

  • 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 $142. While the most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl) can be booked for $248 on average our data indicates $876 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 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 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 see available direct flights.

  • 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 do 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.

  • 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 3/29.

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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 3,228,805 searches. Data last updated March 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$376FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$168Average$408FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapest$213Average$426FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$346Average$414FlexibilityNo 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 on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Seattle to Dulles Intl

Find hourly flight availability from Seattle to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 29, 2024.
1%of flight departuresEarly morningMidnight to 6 am
88%of flight departuresMorning6 am to noon
11%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Dulles Intl

Explore weekly flight availability from Seattle to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 29, 2024.
Sunday16daily flights
Monday17daily flights
Tuesday14daily flights
Wednesday15daily flights
Thursday14daily flights
Friday16daily flights
Saturday16daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Dulles Intl?

Cheapflights makes it easy to find Seattle to Dulles Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Seattle.

Can Cheapflights find flights from Seattle to Dulles Intl with no change fees?

Yes, we can. To see specific flights from Seattle to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Seattle today and book when prices fit your budget.

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 can I compare prices from different travel booking sites for flights from Seattle to Dulles Intl?

Cheapflights aggregates prices from various travel booking sites. This allows you to compare prices and choose the best deal.

Can I find deals for flights from Seattle to Dulles Intl that offer flexible cancellation policies?

Cancellation policies vary by airline and fare type. After entering your flight details, you can view the cancellation policies for each deal in the search results. Some deals may offer flexibility in terms of cancellation and changes.

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