Saver Fare allows a carry-on bag, unlike many basic economy options.
Alaska Lounge offers fresh seasonal food and craft cocktails, surpassing many competitors.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $235 (SmartFares) |
One-way from | $144 (Delta) |
Popular in | December |
Cheapest in | February |
Average price | $382 |
Good round-trip deal | $343 or less |
Good one-way deal | $190 or less |
Fly from
Fly to
Route
Depart
Return
Price
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Sat 5/24
11:30 pm-7:36 am
Nonstop5h 06m
Washington, D.C. Dulles Intl
Sat 5/31
7:00 am-9:40 am
Nonstop5h 40m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Wed 5/21
4:00 pm-11:59 pm
Nonstop4h 59m
Washington, D.C. Dulles Intl
Tue 5/27
6:30 am-9:10 am
Nonstop5h 40m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 5/29
3:11 pm-5:55 am
1 stop11h 44m
Washington, D.C. Dulles Intl
Sun 6/1
7:30 am-2:16 pm
1 stop9h 46m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 6/3
4:00 pm-11:59 pm
Nonstop4h 59m
Washington, D.C. Dulles Intl
Thu 6/5
7:40 am-2:11 pm
1 stop9h 31m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Wed 6/4
10:13 am-10:57 pm
1 stop9h 44m
Washington, D.C. Dulles Intl
Wed 6/11
5:41 pm-10:55 pm
1 stop8h 14m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 5/29
9:50 pm-5:52 am
Nonstop5h 02m
Washington, D.C. Dulles Intl
Tue 6/3
7:45 am-10:33 am
Nonstop5h 48m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 5/22
12:55 pm-9:02 pm
Nonstop5h 07m
Washington, D.C. Dulles Intl
Sat 5/24
5:48 pm-8:41 pm
Nonstop5h 53m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 6/27
7:15 pm-9:37 pm
1 stop23h 22m
Washington, D.C. Dulles Intl
Mon 6/30
12:28 pm-10:50 pm
1 stop13h 22m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 8/5
6:45 am-10:05 pm
2 stops12h 20m
Washington, D.C. Dulles Intl
Mon 8/11
4:30 pm-12:35 am
1 stop11h 05m
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Mon 5/19
9:50 pm-5:52 am
Nonstop5h 02m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*1 star | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy2 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
Booking 35 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.
Currently, August is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Seattle to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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.
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 40% on your trip compared to booking a flight at noon.
Travelers seeking maximum savings on their Seattle to Washington, D.C. Dulles Intl Airport flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from SEA to IAD are scheduled on a Tuesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.
If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Anonymous,Aug 2024
SEA - LAS
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$143 | Average$332 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$169 | Average$534 | FlexibilityNo cancel fee | On-time83% | |
Cheapest$234 | Average$395 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$242 | Average$451 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$243 | Average$423 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$256 | Average$486 | FlexibilityNo cancel fee | On-time71% |