Delta Air Lines flights from SeaTac (SEA) to Washington (IAD)
Find comprehensive Delta Air Lines flight information, schedules, and booking details for direct flights from SeaTac (SEA), US to Washington (IAD), US. Delta Air Lines operates 3-6 flights daily flights on this route.• Flight Duration: 4h 50m - 5h 17m (average flight time)• Distance: 2313 miles (3722 km) (air miles between airports)• Daily Flights: 3-6 flights (scheduled departures per day)
SeaTac (SEA)
US
Washington (IAD)
US
FLIGHT TIME
4h 50m - 5h 17m
FLIGHT DISTANCE
2313 miles (3722 km)
4h 55m - 4h 55m
16:59
16:59
2313 miles (3722 km)
January
1 (Show)
30
Delta Air Lines Flight Schedule from SeaTac (SEA) to Washington (IAD)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
DL541 |  Delta Air Lines | 16:59 | 00:54:00 | Airbus A220-300 |
Delta Air Lines Monthly Flight Calendar
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Route Insights
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 16:00, offering more flight options and potentially better connections.
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Delta Air Lines Terminal Information
Departure Terminal at SeaTac (SEA):
• Terminal : Delta Air Lines operates from this terminal
Arrival Terminal at Washington (IAD):
• Terminal : Delta Air Lines operates from this terminal
Weather & Climate at Washington (IAD)
14.4°C
Avg Temperature88mm
Avg Rainfall10.3km/h
Avg Wind Speed66%
Avg HumidityBest Months to Visit
Challenging Months
12-Month Weather Overview
Wind Speed by Month
Humidity by Month
Best Time to Book Flights to Washington (IAD)
Best Booking Window
Book 2-3 months in advance for best prices
Booking Tip
Avoid booking during extreme weather months for better deals
Peak Travel Months
Expect higher prices and more crowds during these months. Book early to secure better rates.
Recommended Months
These months offer the best balance of weather, prices, and availability.
Monthly Booking Recommendations
Flight Price Trends for Washington (IAD)
Cheapest Months to Fly
Book flights during these months for the best deals and lowest prices.
Most Expensive Months
Prices are typically highest during these months. Consider booking well in advance or choosing alternative dates.
Price Trend Analysis
Prices are typically lower during shoulder seasons
Monthly Price Trends
Best Months to Fly Delta Air Lines to Washington (IAD)
Best Months
Optimal conditions for travel with favorable weather, prices, and availability.
Shoulder Season
Transition periods with moderate conditions. Good balance of price and experience.
Challenging Months
These months may have less favorable conditions. Plan accordingly and book early.
Seasonal Insight
Best travel months: 2023-08
Seasonal Travel Calendar
Frequently Asked Questions about Delta Air Lines Flights
How many Delta Air Lines flights operate from Seattle (SEA) to Washington (IAD)?
Delta Air Lines operates 1 flight from Seattle (SEA) to Washington (IAD).
What city does Washington (IAD) airport serve?
Washington (IAD) airport serves Washington, US.
How long is the Delta Air Lines flight from Seattle (SEA) to Washington (IAD)?
The flight duration is approximately 4h 50m - 5h 17m.
What is the distance from Seattle (SEA) to Washington (IAD)?
The distance is 2313 miles (3722 km).
What aircraft does Delta Air Lines use on this route?
Delta Air Lines uses Airbus A220-300 on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: United Airlines, Alaska Airlines.
What is the cheapest month to fly Delta Air Lines from Seattle (SEA) to Washington (IAD)?
January is typically the cheapest month to fly Delta Air Lines on this route.
What is the average price for a Delta Air Lines flight from Seattle (SEA) to Washington (IAD)?
The average price for a round-trip Delta Air Lines flight on this route is approximately $413. Prices can vary based on booking time and demand.
How many Delta Air Lines flights operate per week on this route?
Delta Air Lines operates approximately 30 flights per week from Seattle (SEA) to Washington (IAD).
Delta Air Lines Contact Information and Customer Services
Delta Air Lines Address
1030 Delta Boulevard
Atlanta, Georgia 30354-1989, United States
Customer Service Phone
+1 800 221 12 12Official Website
delta.com