Flights from Washington Dc to Seattle
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From $343 · Prices update daily
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The quick answer
Flights from Washington Dc to Seattle start around $343 round-trip. Airlines on this route include: Alaska Airlines, Frontier Airlines, United Airlines (direct flights available). Cheapest month: August; peak: June (about +37%). Domestic — no passport required (United States).
Price calendar — next 60 days
★ Cheapest: $343 on Fri, Aug 14 · F9
Lowest return fares · Prices update daily · Final price confirmed at booking
Price calendar — Washington Dc to Seattle
Month-by-month lowest fares. Green = cheapest dates.
United States essentials
🇺🇸 Domestic — no passport required
Domestic flight — no passport required for US citizens. Bring REAL ID for security.
Full Seattle visa guide →🆘 Emergency
911
💱 Currency
US Dollar ($)
🕐 Time zone
UTC−5 to −10
🗣️ Language
English
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20% at restaurants
📞 Dial code
+1
Entry rules can change — always confirm with official sources before booking.
Stay connected in Seattle
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Washington Dc to Seattle trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in Seattle
Pre-book your ride into Seattle. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Washington Dc to Seattle flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Washington Dc to Seattle — frequently asked
How much is a flight from Washington Dc to Seattle?+
Fares start around $343 round-trip, ranging up to about $470 in peak periods. Prices update daily across 800+ airlines.
What is the cheapest month to fly Washington Dc to Seattle?+
August typically has the lowest fares, while June is the most expensive (around +37%).
Are there direct flights from Washington Dc to Seattle?+
Yes — direct flights are available on this route. Connecting itineraries are often cheaper.
Which airlines fly from Washington Dc to Seattle?+
Carriers on this route include Alaska Airlines, Frontier Airlines, United Airlines. Compare them side by side in the search above.
Do US citizens need a visa for United States?+
Domestic — no passport required. Domestic flight — no passport required for US citizens. Bring REAL ID for security.
What currency is used in United States?+
The US Dollar (USD, $). The emergency number is 911.
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