Travelling from Seattle / Tacoma International Airport (SEA) to Washington Dulles Airport (IAD): what you need to know
Jump on a direct flight from Seattle / Tacoma International Airport to Washington Dulles Airport and you'll be travelling for an average of 5 hours.
Washington DC is three hours ahead of Seattle and is in the UTC-5 timezone.
Choose from 35 weekly Seattle / Tacoma International Airport to Washington Dulles Airport flights. The 08:00 departure with United Airlines is the earliest available. Alaska Airlines operates the latest service of the day at 23:40.
To ensure you catch your SEA to IAD flight, allow plenty of time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.
During popular months like July, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a high season in general.
With direct flights from Seattle / Tacoma International Airport to Washington Dulles Airport available from numerous airlines, flying to Washington DC (and then other parts of the United States) is a breeze. Here's who you can fly nonstop with:
Alaska Airlines is the most frequently booked airline on this route.
With an impressive 89.63% of services arriving on schedule, United is the most punctual carrier for SEA to IAD flights.
We make it a cinch to book a flight with a stopover. To see all your options for tickets from Seattle / Tacoma International Airport to Washington Dulles Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to tour your chosen city. Some great stopovers between SEA and IAD include:
Chicago O'Hare International Airport
Detroit Wayne County Airport
Minneapolis St Paul Airport
How to find the cheapest flights from Seattle / Tacoma International Airport (SEA) to Washington Dulles Airport (IAD)
The lowest price we've found for a one-way Seattle / Tacoma International Airport to Washington Dulles Airport flight is Rs32,661. A round-trip fare is currently Rs61,471. Depending on the availability when you book, these fares may change.
It's often best to book in advance if you want to get cheap tickets from SEA to IAD. That's because airlines adjust prices based on demand, which tends to rise closer to the date of departure.
The cheapest month for flights from Seattle / Tacoma International Airport to Washington Dulles Airport is May. Use the 'Whole month' tool to find the lowest prices if you have flexible travel dates.
Getting your hands on cheap flights from SEA to IAD is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll get in touch as soon as fares go down.
Choose your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Seattle / Tacoma International Airport to Washington Dulles Airport.
Handy information about Seattle / Tacoma International Airport (SEA)
Seattle / Tacoma International Airport scores top marks for on-time performance. 80% of flights that depart SEA land on time.
To get to Seattle / Tacoma International Airport from central Seattle, it takes about 25 minutes if you're travelling by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.
You can expect a journey time of roughly 35 minutes when using public transport.
Need a handy hotel near SEA? If you're catching an early flight from Seattle / Tacoma International Airport to Washington Dulles Airport, these stays will put you moments from your check-in counter:
Arriving at Washington Dulles Airport (IAD)
The last thing you need is a long journey to your hotel if you're arriving on a late Seattle / Tacoma International Airport to Washington Dulles Airport flight. Check in to one of these accommodation options near IAD instead:
Go wherever you want, whenever you want with a Washington Dulles Airport rental car. Pick up a set of wheels from Dollar, Thrifty or Sixt and experience more of Washington DC and beyond.
Reserving your vehicle from Washington Dulles Airport around one week ahead gives you the best chance of locking in a great deal.
Getting from Washington Dulles Airport (IAD) to central Washington DC
You'll find IAD at 1 Saarinen Circle.
Washington Dulles Airport is approximately 40 kilometres from the centre of Washington DC. The drive time takes around 45 minutes.
It'll take around 1 hour 10 minutes to get there using public transport.
When to fly to Washington Dulles Airport (IAD)
The quietest month for a flight from Seattle / Tacoma International Airport to Washington Dulles Airport is February, while July is the most popular. Pick the ideal time to visit Washington DC based on whether you prefer a more fast-paced or easygoing experience.
The warmest month in Washington DC is July, with temperatures ranging between 19ºC and 33ºC. Book your flights from Seattle / Tacoma International Airport to Washington Dulles Airport in this month if this is the type of weather you like.
January has average temperatures of between -6ºC and 10ºC. Look for cheap tickets from SEA to IAD sometime then if you like cooler conditions.
Explore more of the United States
Washington DC is always a good idea, but there are so many other parts of the United States waiting to be explored. About 322 kilometres north-east of Washington DC, a visit to New York will keep you on the move. Check out popular attractions like Central Park, Statue of Liberty and Metropolitan Museum of Art.
Philadelphia is another well-known destination in the United States and is around 193 kilometres north-east of Washington DC. No journey is complete without seeing Independence Hall, Liberty Bell and Philadelphia Museum of Art.
