Direct (non-stop) flights from SeaTac (SEA) to Morrisville (RDU)
Find comprehensive flight information, schedules, and booking details for direct flights from SeaTac (SEA) to Morrisville (RDU). This popular route is operated by 2 airlines, offering multiple daily departures.• Flight Duration: 4h 54m - 5h 23m (average flight time)• Distance: 2362 miles (3800 km) (air miles between airports)• Daily Flights: 1-3 flights (scheduled departures per day)
SeaTac (SEA)
Morrisville (RDU)
FLIGHT TIME
4h 54m - 5h 23m
FLIGHT DISTANCE
2362 miles (3800 km)
4h 59m - 5h 2m
09:50
15:59
2362 miles (3800 km)
January
2 (Show)
18
Flight Schedule
December 2025
Airlines with direct flights from SeaTac (SEA) to Morrisville (RDU)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 4h 54m - 5h 23m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 9:00, 15:00, offering more flight options and potentially better connections.
SeaTac (SEA) - Morrisville (RDU) flight price statistics
$494
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$236
Jan$698
Feb$313
Mar$323
Apr$358
May$688
Jun$638
Jul$518
Aug$318
Sep$318
Oct$768
Nov$754
DecRelated Information
Airports: SEA • RDU Airport
Airlines operating this route: Alaska Airlines (AS), Delta Air Lines
Frequently Asked Questions
How many flights operate from SEA to RDU?
There are 2 direct flights operating from SEA to RDU. Approximately 1-3 flights daily.
Which airlines operate flights from SEA to RDU?
2 airlines operate on this route: Alaska Airlines, Delta Air Lines.
How long is the flight from SEA to RDU?
The flight duration from SEA to RDU is approximately 4h 54m - 5h 23m.
What is the distance from SEA to RDU?
The distance from SEA to RDU is 2362 miles (3800 km).
What is the flight time range for this route?
Flight times on this route range from 4h 59m - 5h 2m.
What are the earliest and latest flight departure times?
The earliest flight departs at 09:50 and the latest flight departs at 15:59.
What is the cheapest month to fly from SEA to RDU?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 18 flights operate per week from SEA to RDU.
What types of aircraft operate on this route?
This route is served by Boeing 737-800 (winglets) Passenger/BBJ2, Boeing 737-800 Passenger.
What is the average flight price from SEA to RDU?
The average flight price for a round-trip ticket from SEA to RDU is approximately $494 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from SEA to RDU for the lowest prices?
January is typically the cheapest month to fly from SEA to RDU. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from SEA to RDU?
2 airlines offer direct flights from SEA to RDU, providing travelers with multiple options for scheduling and pricing.
How far is RDU from SEA?
The distance from SEA to RDU is 2362 miles (3800 km). This is a long-haul flight route.
How long does it take to fly from SEA to RDU?
The flight time from SEA to RDU is approximately 4h 54m - 5h 23m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.