- Must visit
Smithsonian National Museum of Natural History
One of the most visited museums in the city, known for dinosaur fossils, the Hope Diamond, and major natural science collections.
| Operator | Departure Time | Arrival Time | Duration | Departure days | Cheapest price |
|---|---|---|---|---|---|
Operator Flixbus USA | Departure Time 10:25AM | Arrival Time 02:25AM | Duration 88h00 | Departure days Thu, Fri | Cheapest price $787 |
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Buses from SeaTac, WA to Washington, DC run on average 1 times per day, taking around 88h 0m. Cheap bus tickets for this journey start at $787 (€644) if you book in advance.
The earliest bus runs at 15:45, the last at 19:40. The fastest bus covers the 2320 miles (3735 km) distance in 88h 0m.
Distance 2320 miles (3735 km) |
Average bus duration 88h 0m |
Cheapest ticket price $787 (€644) |
Buses per day 1 |
Fastest bus 88h 0m |
First bus 3:45 PM |
Last bus 7:40 PM |
Best time to book 28 days |
Discover the best of Washington — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect Washington trip today.
One of the most visited museums in the city, known for dinosaur fossils, the Hope Diamond, and major natural science collections.
Flagship museum for aviation and space exploration, featuring iconic aircraft, spacecraft, and interactive exhibits.
Powerful museum covering African American history, culture, and achievements through immersive exhibitions.
The city’s central ceremonial landscape, lined with major museums, memorials, and classic Washington views.
Historic neighborhood of cobbled streets, waterfront paths, and Federal-era architecture, ideal for walking and photos.
Scenic waterfront loop famous for cherry blossoms and close-up access to several major memorials.
Washington’s signature sausage, usually smoky and spicy, served on a bun with chili, mustard, and onions. It is one of the city’s most iconic street foods.
A sweet-tangy sauce strongly associated with Washington carryout culture, commonly paired with fried chicken and fries. It is a distinctive local flavor locals recognize immediately.
Regional blue crab from nearby Chesapeake waters, often served steamed and heavily seasoned. It reflects the Mid-Atlantic seafood traditions closely tied to Washington dining.
An established downtown institution known for oysters, crab cakes, and classic American seafood near the White House, with an elegant old-school atmosphere.
Busy, established French brasserie in Logan Circle known for polished service, a classic dining room, and consistently popular bistro dishes.
Historic casual landmark on U Street, famous for half-smokes, chili dogs, and classic Washington comfort food in a lively, nostalgic setting.
Prices are high by U.S. standards, especially for hotels and dining near central areas and major attractions.
Tip 18-20% at restaurants. USD 1-2 per drink at bars. Taxis: 10-15% or round up. Hotel staff: USD 2-5. Tips are expected for table service.
Official public transport app
L'Enfant Plaza, Washington, DC -> Union Station, Washington, DC
Find answers to the most common questions about traveling from SeaTac, WA to Washington, DC by bus. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest bus, the cheapest option, or tips for making the most of your visit at Washington, DC, this guide helps you travel smarter and with confidence.

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