Direct (non-stop) flights from Morrisville (RDU) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Morrisville (RDU) to SeaTac (SEA). This popular route is operated by 2 airlines, offering multiple daily departures.• Flight Duration: 5h 53m - 6h 11m (average flight time)• Distance: 2362 miles (3800 km) (air miles between airports)• Daily Flights: 1-3 flights (scheduled departures per day)
Morrisville (RDU)
SeaTac (SEA)
FLIGHT TIME
5h 53m - 6h 11m
FLIGHT DISTANCE
2362 miles (3800 km)
6h 4m - 6h 11m
07:00
18:52
2362 miles (3800 km)
January
2 (Show)
19
Flight Schedule
December 2025
Airlines with direct flights from Morrisville (RDU) 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 53m - 6h 11m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 7:00, 18:00, offering more flight options and potentially better connections.
Morrisville (RDU) - SeaTac (SEA) flight price statistics
$480
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$322
Mar$324
Apr$1038
May$738
Jun$738
Jul$388
Aug$318
Sep$318
Oct$318
Nov$318
DecRelated Information
Airports: RDU • SEA Airport
Airlines operating this route: Alaska Airlines (AS), Delta Air Lines
Frequently Asked Questions
How many flights operate from RDU to SEA?
There are 3 direct flights operating from RDU to SEA. Approximately 1-3 flights daily.
Which airlines operate flights from RDU to SEA?
2 airlines operate on this route: Alaska Airlines, Delta Air Lines.
How long is the flight from RDU to SEA?
The flight duration from RDU to SEA is approximately 5h 53m - 6h 11m.
What is the distance from RDU to SEA?
The distance from RDU to SEA is 2362 miles (3800 km).
What is the flight time range for this route?
Flight times on this route range from 6h 4m - 6h 11m.
What are the earliest and latest flight departure times?
The earliest flight departs at 07:00 and the latest flight departs at 18:52.
What is the cheapest month to fly from RDU to SEA?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 19 flights operate per week from RDU to SEA.
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 RDU to SEA?
The average flight price for a round-trip ticket from RDU to SEA is approximately $480 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from RDU to SEA for the lowest prices?
January is typically the cheapest month to fly from RDU to SEA. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from RDU to SEA?
2 airlines offer direct flights from RDU to SEA, providing travelers with multiple options for scheduling and pricing.
How far is SEA from RDU?
The distance from RDU to SEA is 2362 miles (3800 km). This is a long-haul flight route.
How long does it take to fly from RDU to SEA?
The flight time from RDU to SEA is approximately 5h 53m - 6h 11m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.