$124 Cheap Flights from Raleigh (RDU) to Seattle (SEA)

View $124 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Raleigh to Seattle (RDU-SEA)

Prices were available within the past 7 days and start at $124 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Sep 29 - Tue, Oct 14
RDU
Raleigh
SEA
Seattle
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Sep 29 from Raleigh to Seattle, returning Tue, Oct 14, priced at $237 found 1 day ago
United
Tue, Oct 7 - Tue, Oct 14
RDU
Raleigh
SEA
Seattle
$252 Roundtrip, just found
$252
Roundtrip
just found
Select United flight, departing Tue, Oct 7 from Raleigh to Seattle, returning Tue, Oct 14, priced at $252 just found
United
Tue, Nov 4 - Wed, Nov 12
RDU
Raleigh
SEA
Seattle
$258 Roundtrip, found 2 hours ago
$258
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Nov 4 from Raleigh to Seattle, returning Wed, Nov 12, priced at $258 found 2 hours ago
United
Thu, Oct 23 - Sat, Nov 1
RDU
Raleigh
SEA
Seattle
$258 Roundtrip, just found
$258
Roundtrip
just found
Select United flight, departing Thu, Oct 23 from Raleigh to Seattle, returning Sat, Nov 1, priced at $258 just found
United
Tue, Oct 21 - Sat, Oct 25
RDU
Raleigh
SEA
Seattle
$262 Roundtrip, found 1 hour ago
$262
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 21 from Raleigh to Seattle, returning Sat, Oct 25, priced at $262 found 1 hour ago
United
Wed, Oct 15 - Fri, Oct 24
RDU
Raleigh
SEA
Seattle
$266 Roundtrip, just found
$266
Roundtrip
just found
Select United flight, departing Wed, Oct 15 from Raleigh to Seattle, returning Fri, Oct 24, priced at $266 just found
United
Tue, Oct 7 - Tue, Oct 14
RDU
Raleigh
SEA
Seattle
$267 Roundtrip, just found
$267
Roundtrip
just found
Select United flight, departing Tue, Oct 7 from Raleigh to Seattle, returning Tue, Oct 14, priced at $267 just found
Southwest Airlines
Tue, Oct 28 - Sat, Nov 1
RDU
Raleigh
SEA
Seattle
$268 Roundtrip, found 10 hours ago
$268
Roundtrip
found 10 hours ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Raleigh to Seattle, returning Sat, Nov 1, priced at $268 found 10 hours ago
JetBlue Airways
Thu, Oct 23 - Sat, Nov 1
RDU
Raleigh
SEA
Seattle
$271 Roundtrip, just found
$271
Roundtrip
just found
Select JetBlue Airways flight, departing Thu, Oct 23 from Raleigh to Seattle, returning Sat, Nov 1, priced at $271 just found
Alaska Airlines
Sat, Nov 1 - Sat, Nov 8
RDU
Raleigh
SEA
Seattle
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Nov 1 from Raleigh to Seattle, returning Sat, Nov 8, priced at $277 just found

Find the cheapest month to fly from Raleigh (RDU) to Seattle (SEA)

October is typically the cheapest month to fly

From $138 - $281 per traveler.

Graph displaying average flight prices per month

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, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$236
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 September. 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 $124 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 much does a flight from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $124 or cheap return flight from $237 from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
September is the most affordable month to fly from RDU to SEA. Timing your trip outside of the busy season is often the key to better flight prices.
Which airlines fly direct from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
You can fly nonstop from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) on a Delta Air Lines flight.
What is the cheapest airline that flies from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest airline to offer flights between Raleigh - Durham Intl. Airport (RDU) and Seattle - Tacoma Intl. Airport (SEA) will change depending on your travel plans. Alaska Airlines and Delta Air Lines are just some good options offering well-priced fares. Use Expedia's filters to compare airlines in one place and find the right RDU to SEA flight for your budget.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
On average, there is just 1 direct flight taking off from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) per day. If this doesn't suit your schedule, think about flights with a layover. Just customize your search on Expedia to include one or more stops to find the next best option.
What are the most popular departure times for flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
More passengers fly between RDU and SEA at 7 AM than at any other point in the day. Prefer a quieter experience? Try choosing a quieter departure window and you're likely to save on your ticket as well.
What day of the week has the most flights from RDU to SEA?
If you fly on a Thursday, you'll get the largest range of choices for flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
Raleigh - Durham Intl. Airport (RDU)'s first flight to Seattle - Tacoma Intl. Airport (SEA) leaves at approximately 7:20AM UTC-5. With a travel duration of 6h 9m, you'll touch down at around 10:29AM UTC-8.
How long does it take to fly from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
Flights from RDU to SEA have an average travel time of 6 hours and 9 minutes. The total distance between the two airports is 2,400 mi.
What airline has the least delays from RDU to SEA?
With 90% of flights generally arriving on time, Delta Air Lines has the best on-time performance for nonstop flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA). To keep track of your flight status and receive notifications if anything changes, use the Expedia App.
What is the best time to fly from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Raleigh - Durham Intl. Airport (RDU)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Raleigh - Durham Intl. Airport (RDU). Browse your options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your trip to book your flight from RDU to SEA generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for a better chance of landing a bargain.
Is it cheaper to book a RDU to SEA flight and hotel package?
Compared with arranging hotels and flights separately, booking a RDU to SEA flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place takes the hassle out of planning your trip. Just secure your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, it's possible to reschedule or cancel your RDU to SEA flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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