Flying from Seattle-Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD): what you need to know
The average time for a direct flight from Seattle-Tacoma International Airport to Washington Dulles International Airport is 5 hours. Washington DC's timezone is UTC-4, making Washington DC 3 hours ahead of Seattle.
You can choose from 114 weekly flights from Seattle-Tacoma International Airport to Washington Dulles International Airport. The 07:00 departure with Alaska Airlines is the earliest available from SEA to IAD. Alaska Airlines operates the latest service of the day at 23:43 if you'd rather not get up at the crack of dawn.
Getting away during a peak month like July? High seasons (like summer, Thanksgiving, Christmas and spring break) can add another hour at check-in and security. Be extra safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.
United Airlines is your ticket to exploring Washington DC (and perhaps some other great corners of United States!). Look through the direct flights from Seattle-Tacoma International Airport to Washington Dulles International Airport offered by this popular carrier.
If you want to break up your flight from Seattle-Tacoma International Airport to Washington Dulles International Airport, think about adding a stopover. Simply deselect 'Direct flights only' to find a city that appeals to you. The top stopovers on the SEA - IAD route are:
O'Hare International Airport
Minneapolis-St. Paul International Airport
Detroit Metropolitan Wayne County Airport
How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD)
The lowest price we've found for a one-way ticket from Seattle-Tacoma International Airport to Washington Dulles International Airport is ₹ 9,998. For a return flight on this route, the best price is ₹ 20,078. Depending on the availability and when you book, these fares could change.
To get cheap flight tickets from SEA to IAD, reserve your trip 9 months ahead of your departure date.
May is the cheapest month for flight tickets from Seattle-Tacoma International Airport to Washington Dulles International Airport. If you prefer to fly at a different time of year, the 'Whole month' tool will give you the lowest prices across every month.
Sign into your online account or use the app to create a Price Alert. We'll get in touch straight away if there's a better deal on this route. It's simple to do, and it'll save you time looking for cheap flight tickets from SEA to IAD every day.
Take advantage of filters to find the ideal journey for you. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Seattle-Tacoma International Airport to Washington Dulles International Airport, use the 'Sort by' function. You can also filter results by airline, departure and arrival times, and number of stops.
Handy information about Seattle-Tacoma International Airport (SEA)
Seattle-Tacoma International Airport is around 23 kilometres from central Seattle. If you're catching a cab, driving or ride-sharing from the centre, it'll take 18 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the journey time to be around 54 minutes.
Catching an early flight from Seattle-Tacoma International Airport to Washington Dulles International Airport? Avoid rushing to the airport (and catch some extra z's) by choosing one of these stays near SEA:
Arriving at Washington Dulles International Airport (IAD)
If you have a late flight from Seattle-Tacoma International Airport to Washington Dulles International Airport, few things beat the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and sleeping not long after at one of these options near IAD:
Getting from Washington Dulles International Airport (IAD) to central Washington DC
From Washington Dulles International Airport, Washington DC is approximately 56 kilometres away. It takes around 51 minutes to get to the centre driving.
When travelling by public transport, expect a journey of about 3 hours and 26 minutes.
When to fly to Washington Dulles International Airport (IAD)
It's time to choose your dates for your flight from Seattle-Tacoma International Airport to Washington Dulles International Airport. July is the most popular month to visit Washington DC. If you prefer a quieter vibe, go in February.
When reserving your flight from Seattle-Tacoma International Airport to Washington Dulles International Airport, think about the kind of weather you like. July is the warmest month in Washington DC, with temperatures ranging from 19ºC to 33ºC.
If you like travelling in cooler conditions, search for a cheap ticket from SEA to IAD in January. Average temperatures are between -6ºC and 10ºC then.
More about Washington DC
When it comes to looking for somewhere to lay your head, you'll find the top stays in Washington DC right here. Browse these hotels after locking in your flight from SEA to IAD:
White House Historical Association and The White House are just the start of the top attractions to add to your Washington DC itinerary. Continue your sightseeing adventures at National Mall.
Complete your Washington DC trip with hotels and a car rental
You've booked your cheap ticket to Washington Dulles International Airport — next on the list is finding a great stay, and perhaps even your own set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Washington DC.
