Flying from Washington Dulles International Airport (IAD) to Seattle-Tacoma International Airport (SEA): what you need to know
Hop on a direct flight from Washington Dulles International Airport to Seattle-Tacoma International Airport and you'll be travelling for an average of 5 hours 50 minutes.
The timezone in Seattle is UTC-7, which is three hours behind Washington DC.
You can choose from 58 weekly Washington Dulles International Airport to Seattle-Tacoma International Airport flights. The 07:00 departure with Alaska Airlines is the earliest available. United Airlines operates the latest service of the day at 22:15.
Get to the airport on time so you don't miss your IAD to SEA flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.
Travelling during a peak month like April? Public holidays and other popular periods can result in longer lines at airport checkpoints. Play it safe and arrive up to four hours before an international flight and two hours before a domestic departure.
With direct flights from Washington Dulles International Airport to Seattle-Tacoma International Airport available through various airlines, getting to Seattle (and then other corners of United States) is a snap. You can travel nonstop with:
Most travellers choose to fly with Alaska Airlines on this route.
With an impressive 85.53% of services arriving as planned, Delta Air Lines has the best on-time record for IAD to SEA flights.
Think about adding a stopover when booking your ticket from Washington Dulles International Airport to Seattle-Tacoma International Airport. Just uncheck 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here are some options between IAD and SEA:
Detroit Metropolitan Wayne County Airport
O'Hare International Airport
Denver International Airport
How to find the cheapest flights from Washington Dulles International Airport (IAD) to Seattle-Tacoma International Airport (SEA)
The lowest price we've found for a one-way Washington Dulles International Airport to Seattle-Tacoma International Airport flight is $173. A return plane ticket right now is $384. Depending on the availability when you book, these fares could change.
To pick up cheap tickets from IAD to SEA, reserve your journey seven months before your planned departure.
June is the cheapest month for flights from Washington Dulles International Airport to Seattle-Tacoma International Airport. If you want to travel at a different time of year, the 'Whole month' tool will give you the lowest airfares for each month.
Picking up cheap flights from IAD to SEA is a piece of cake with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a lower fare pops up.
Tailor your trip with filters. Choose your ideal arrival and departure times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Washington Dulles International Airport to Seattle-Tacoma International Airport.
Handy information about Washington Dulles International Airport (IAD)
You'll find IAD at 1 Saarinen Circle.
74.39% of flights taking off from Washington Dulles International Airport make it to their destination on time.
Central Washington DC to Washington Dulles International Airport is around 56 kilometres. Depending on traffic, it'll take you about 50 minutes to get there if you're driving, catching a cab or ride-sharing.
Catching public transport? Expect a trip time of around 3 hours 25 minutes.
Get your travels off to a leisurely start by staying near IAD. Whether you've booked an early flight from Washington Dulles International Airport to Seattle-Tacoma International Airport or want to avoid feeling rushed, these hotels are perfect:
Arriving at Seattle-Tacoma International Airport (SEA)
Consider booking a hotel near SEA if you're taking a late Washington Dulles International Airport to Seattle-Tacoma International Airport flight. Choose one of these options and skip the long transfer:
Fast-track your adventure by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget to explore Seattle and beyond.
Lock in the lowest price by reserving your ride from Seattle-Tacoma International Airport around one week ahead of your departure.
Getting from Seattle-Tacoma International Airport (SEA) to central Seattle
Seattle-Tacoma International Airport is approximately 23 kilometres from central Seattle. The drive time takes around 20 minutes.
Travelling on public transport takes roughly 55 minutes.
When to fly to Seattle-Tacoma International Airport (SEA)
It's time to plan your dates for your flight from Washington Dulles International Airport to Seattle-Tacoma International Airport. July is the busiest month to visit Seattle. If you're after a more low-key vibe, go in May.
Lock in your flight from Washington Dulles International Airport to Seattle-Tacoma International Airport for August if you want to explore Seattle during its warmest month. You can expect temperatures of between 12ºC (54ºF) and 28ºC (82ºF).
Search for cheap tickets from IAD to SEA in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.
Explore more of United States
Seattle is easy to fall in love with, but there are so many other corners of United States just waiting to be explored. About 241 kilometres south of Seattle, a visit to Portland will fill your itinerary to the brim. Start with attractions like Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.
If you're ready to explore another corner of United States, head for Spokane, roughly 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are key highlights.
