$94 Cheap Flights from Raleigh (RDU) to Seattle (SEA)

View $94 flight on Wed, May 7, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Raleigh to Seattle (RDU-SEA)

Prices were available within the past 7 days and start at $94 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, May 7 - Wed, May 14
RDU
Raleigh
SEA
Seattle
$188 Roundtrip, found 2 hours ago
$188
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, May 7 from Raleigh to Seattle, returning Wed, May 14, priced at $188 found 2 hours ago
Frontier Airlines
Wed, May 14 - Thu, May 29
RDU
Raleigh
SEA
Seattle
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, May 14 from Raleigh to Seattle, returning Thu, May 29, priced at $198 found 1 day ago
Frontier Airlines
Wed, May 21 - Sat, May 31
RDU
Raleigh
SEA
Seattle
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 21 from Raleigh to Seattle, returning Sat, May 31, priced at $208 just found
Frontier Airlines
Wed, May 7 - Wed, May 28
RDU
Raleigh
SEA
Seattle
$213 Roundtrip, found 1 day ago
$213
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, May 7 from Raleigh to Seattle, returning Wed, May 28, priced at $213 found 1 day ago
Frontier Airlines
Wed, May 7 - Tue, Jun 17
RDU
Raleigh
SEA
Seattle
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, May 7 from Raleigh to Seattle, returning Tue, Jun 17, priced at $218 found 2 days ago
United
Wed, May 21 - Sat, May 31
RDU
Raleigh
SEA
Seattle
$223 Roundtrip, just found
$223
Roundtrip
just found
Select United flight, departing Wed, May 21 from Raleigh to Seattle, returning Sat, May 31, priced at $223 just found
American Airlines
Wed, May 28 - Sat, May 31
RDU
Raleigh
SEA
Seattle
$228 Roundtrip, found 1 hour ago
$228
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, May 28 from Raleigh to Seattle, returning Sat, May 31, priced at $228 found 1 hour ago
Frontier Airlines
Fri, May 30 - Mon, Jun 9
RDU
Raleigh
SEA
Seattle
$228 Roundtrip, just found
$228
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, May 30 from Raleigh to Seattle, returning Mon, Jun 9, priced at $228 just found
Southwest Airlines
Tue, Jun 10 - Wed, Jun 11
RDU
Raleigh
SEA
Seattle
$257 Roundtrip, found 19 hours ago
$257
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Tue, Jun 10 from Raleigh to Seattle, returning Wed, Jun 11, priced at $257 found 19 hours ago
Delta
Sun, Jun 1 - Wed, Jun 11
RDU
Raleigh
SEA
Seattle
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Sun, Jun 1 from Raleigh to Seattle, returning Wed, Jun 11, priced at $257 just found
Flights from Raleigh (RDU) to Seattle (SEA)
Origin airport
Raleigh - Durham Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$188
Distance
2348 mi

Raleigh to Seattle Flights

The cheapest times to fly from Raleigh to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Raleigh to Seattle are during the month of May. You can find some of the cheapest flights from Raleigh to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Raleigh to Seattle

Sunday is one of the best days to book for cheap flights from Raleigh to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Raleigh to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Raleigh to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $94 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Raleigh to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Raleigh to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How long does it take to fly from RDU to Sea-Tac Airport?
Book your ticket with Alaska Airlines and you’ll be in the air for around 5 hours and 52 minutes. This sought-after carrier operates a direct flight that sets off at 7:45AM from RDU and comes in to land at Sea-Tac Airport at 10:37AM. Expedia has unbeatable flight deals, so take a peek at what’s on offer on this route today.
Is it cheaper to buy a plane ticket from Raleigh - Durham Intl. Airport (RDU) to Sea-Tac Airport last minute?
Booking your journey from Raleigh–Durham Airport to Sea-Tac Airport last minute could save you some dough if you hit the jackpot and find a real steal. However, airfares don’t usually get cheaper as the date of departure nears. If you hold out, flights could also be booked out or the best seats taken (because who wants the middle seat?). If you don’t want to risk it, book well in advance of when you want to leave. In fact, you can find some of the biggest deals up to 12 months in advance. If your preferred airline hasn’t released its fares yet, check back regularly as offers are constantly updated on Expedia.
What airline has the least delays from Raleigh - Durham Intl. Airport (RDU) to Sea-Tac Airport?
If you’d prefer not to be stuck at the departure gate — or worse, have your trip upended because of a flight delay — travel with Alaska Airlines. Around 81% of its RDU to Sea-Tac Airport services touch down on time. You can check your flight status before making your way to the airport through the Expedia App. It also delivers real-time alerts about a bunch of other useful things, such as gate changes, luggage carousel numbers and directions to your hotel. Think of it as a travel companion that fits in your pocket!
What airports do you fly into for Seattle from Raleigh?
From Raleigh, you can get to Seattle through Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI). Check which terminal is right for you before making your decision. If you settle on Seattle - Tacoma Intl. Airport (SEA), it’s roughly 12 mi south of the center of the city. Use the dollars you save when booking your fare with Expedia to check out the city’s top sights, such as Space Needle and Pike Place Market.
What are the most popular departure times for flights from Raleigh--Durham Airport to Seattle - Tacoma Intl. Airport (SEA)?
Between 7:00 AM - 8:00 AM is the busiest period for Delta Air Lines flights taking off from Raleigh–Durham Airport to Sea-Tac Airport. Our tip? Choose a flight that departs early. With air traffic yet to build up around airports, your chances of catching a delay-free flight are better.
Can I change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to SEA?
You can quickly and easily make changes to your Raleigh - Durham Intl. Airport (RDU) to Sea-Tac Airport flight via the Expedia Trips portal. But before amending dates or times, read over the ticket rules in your itinerary to learn what the airline will let you do and if fees apply for changes. Some airlines charge a change fee per person, on top of any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also find your way to our Customer Service portal to find the answers to your questions and to chat with our Virtual Agent.

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*Available to One Key members.