Cheap flights from Seattle (SEA) to Dulles Intl (IAD) from $145

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.

Yes, there are multiple flights from Seattle to Washington, D.C. Dulles Intl Airport for under $300. The cheapest flight booked recently is on Alaska Airlines for just $277, but on average you can expect to pay $295.

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 $320.

There are currently 20+ open flights from Seattle to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $400.

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

Per day, 22 flights depart from Seattle to Washington, D.C. Dulles Intl Airport on average.
Morning (6am - Noon) - 36% of flight departures
Afternoon (Noon - 6pm) - 23% of flight departures
Evening (6pm - Midnight) - 41% of flight departures

Airlines like Alaska Airlines, Delta, and United Airlines fly from Seattle to Washington, D.C. Dulles Intl Airport in about 4h 53m. The time it takes to get you to your destination can typically vary by up to 4h 09m. 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.

Alaska Airlines, at $277, 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. Alaska Airlines is 29% cheaper than the average price of flights available within the next 90 days to this destination.

The cheapest airlines for a one-way flight from Seattle to Washington, D.C. Dulles Intl Airport are Alaska Airlines ($145), Sun Country Air ($147), and United Airlines ($150).

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 (96%), Avianca (92%), United Airlines (90%).

Looking at all options, your cheapest flight can be booked for $144. While the most popular route (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl) can be booked for $277 on average our data indicates $762 when flying from Seattle to Washington, D.C. Dulles Intl Airport.

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.

The amount of baggage you can bring on your Seattle to Dulles Intl flight 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.

Yes, Cheapflights allows you to browse and filter Seattle to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Seattle to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct 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.

Many airlines flying from Seattle to Dulles Intl 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.

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.

The Seattle to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 6/6.

The most popular airlines flying from Seattle to Washington, D.C. Dulles Intl Airport are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

Currently, September is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Seattle to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $382). 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.