Cheap Flights from Washington DC to Seattle
Flights from Washington DC to Seattle
Sorted by price. All fares round-trip unless noted.
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Search Washington DC → SeattleCould two one-way tickets be cheaper?
On many routes, buying separate outbound + return one-ways beats the round-trip. Different airlines price each direction independently, so the split is sometimes $50–$200 cheaper.
Run the split-fare checkFrequently asked questions
How much does it cost to fly from Washington DC to Seattle?+
Prices from Washington DC to Seattle vary by season, airline, and how far ahead you book. Searching 4–6 weeks out typically yields the lowest fares.
Are there nonstop flights from Washington DC to Seattle?+
Nonstop availability on this route varies by season. Many connections route through major hubs. Use filters in the full search to check nonstop-only options.
What is the cheapest day to fly from Washington DC to Seattle?+
Tuesdays and Wednesdays are typically the cheapest departure days across most routes. Saturdays tend to be the most expensive. Even shifting your departure by 1–2 days can save $40–$80.
What is split-fare and can it save money on Washington DC to Seattle?+
Split-fare means booking two separate one-way tickets instead of one round-trip. Different airlines price outbound and return legs independently, so the combination can be cheaper. Hopfare's split-fare engine checks this automatically — on many routes it saves $50–$200.
Which airlines fly from Washington DC to Seattle?+
Multiple airlines serve this route. Use the full search above to see today's available carriers and compare prices.
Search Washington DC → Seattle
Pick dates, filter airlines, and run the split-fare engine — all in one search.
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