Direct (non-stop) flights from Washington (IAD) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Washington (IAD), US to SeaTac (SEA), US. This popular route is operated by 3 airlines, offering multiple daily departures.• Flight Duration: 5h 35m - 6h 04m (average flight time)• Distance: 2313 miles (3722 km) (air miles between airports)• Daily Flights: 3-4 flights (scheduled departures per day)
Washington (IAD)
US
SeaTac (SEA)
US
FLIGHT TIME
5h 35m - 6h 04m
FLIGHT DISTANCE
2313 miles (3722 km)
5h 54m - 6h 4m
07:15
18:34
2313 miles (3722 km)
January
3 (Show)
35
Flight Schedule
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Airlines with direct flights from Washington (IAD) to SeaTac (SEA)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 5h 35m - 6h 04m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 7:00, 17:00, 18:00, offering more flight options and potentially better connections.
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Best Time to Visit & Travel Planning
Cheapest Day
Cheapest Month
Average Fare
$383
Travel Planning Tips for Washington (IAD) to SeaTac (SEA)
- Best Day to Book
Tuesday typically offers the lowest fares for flights from Washington (IAD) to SeaTac (SEA). Consider booking on this day for potential savings.
- Best Month to Travel
September is generally the cheapest month to fly from Washington (IAD) to SeaTac (SEA). Plan your trip during this month for the best deals.
- Average Flight Price
The average fare for flights from Washington (IAD) to SeaTac (SEA) is approximately $383. Prices may vary based on booking time, season, and airline.
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Related Pages
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Frequently Asked Questions
How many flights operate from Washington (IAD) to Seattle (SEA)?
There are 4 direct flights operating from Washington (IAD) to Seattle (SEA). Approximately 3-4 flights daily.
Which airlines operate flights from Washington (IAD) to Seattle (SEA)?
3 airlines operate on this route: Delta Air Lines, Alaska Airlines, United Airlines.
How long is the flight from Washington (IAD) to Seattle (SEA)?
The flight duration from Washington (IAD) to Seattle (SEA) is approximately 5h 35m - 6h 04m.
What is the distance from Washington (IAD) to Seattle (SEA)?
The distance from Washington (IAD) to Seattle (SEA) is 2313 miles (3722 km).
What is the flight time range for this route?
Flight times on this route range from 5h 54m - 6h 4m.
What are the earliest and latest flight departure times?
The earliest flight departs at 07:15 and the latest flight departs at 18:34.
What is the cheapest month to fly from Washington (IAD) to Seattle (SEA)?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 35 flights operate per week from Washington (IAD) to Seattle (SEA).
What types of aircraft operate on this route?
This route is served by Airbus A220-300, Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737-800 Passenger.
What is the average flight price from Washington (IAD) to Seattle (SEA)?
The average flight price for a round-trip ticket from Washington (IAD) to Seattle (SEA) is approximately $419 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from Washington (IAD) to Seattle (SEA) for the lowest prices?
January is typically the cheapest month to fly from Washington (IAD) to Seattle (SEA). Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from Washington (IAD) to Seattle (SEA)?
3 airlines offer direct flights from Washington (IAD) to Seattle (SEA), providing travelers with multiple options for scheduling and pricing.
How far is Seattle (SEA) from Washington (IAD)?
The distance from Washington (IAD) to Seattle (SEA) is 2313 miles (3722 km). This is a long-haul flight route.
How long does it take to fly from Washington (IAD) to Seattle (SEA)?
The flight time from Washington (IAD) to Seattle (SEA) is approximately 5h 35m - 6h 04m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.
What city does Seattle (SEA) serve?
Seattle (SEA) serves Seattle, US.