$120 Cheap United flights from Raleigh to Seattle (RDU to SEA)

Find The Best Day To Fly from Raleigh to Seattle

Amazing United RDU to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $231 round trip and $120 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Nov 1 - Sat, Nov 8
RDU
Raleigh
SEA
Seattle
$231 Roundtrip, found 2 days ago
$231
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from Raleigh to Seattle, returning Sat, Nov 8, priced at $231 found 2 days ago
Sat, Nov 1 - Sat, Nov 8
RDU
Raleigh
SEA
Seattle
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from Raleigh to Seattle, returning Sat, Nov 8, priced at $237 found 2 days ago
Sun, Sep 14 - Sun, Sep 21
RDU
Raleigh
SEA
Seattle
$238 Roundtrip, found 18 hours ago
$238
Roundtrip
found 18 hours ago
Select United flight, departing Sun, Sep 14 from Raleigh to Seattle, returning Sun, Sep 21, priced at $238 found 18 hours ago
Wed, Nov 5 - Wed, Nov 12
RDU
Raleigh
SEA
Seattle
$241 Roundtrip, found 2 days ago
$241
Roundtrip
found 2 days ago
Select United flight, departing Wed, Nov 5 from Raleigh to Seattle, returning Wed, Nov 12, priced at $241 found 2 days ago
Sat, Sep 20 - Tue, Sep 23
RDU
Raleigh
SEA
Seattle
$242 Roundtrip, found 20 hours ago
$242
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Sep 20 from Raleigh to Seattle, returning Tue, Sep 23, priced at $242 found 20 hours ago
Sat, Sep 20 - Tue, Sep 23
RDU
Raleigh
SEA
Seattle
$243 Roundtrip, found 20 hours ago
$243
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Sep 20 from Raleigh to Seattle, returning Tue, Sep 23, priced at $243 found 20 hours ago

SEA From RDU Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
The Inn at Virginia Mason

The Inn at Virginia Mason

2.5 out of 5
per person
Oct 11 - Oct 15
found 1 day ago
Roundtrip non-stop flight included
Raleigh (RDU) to Seattle (SEA)
1 Hotel Seattle

1 Hotel Seattle

5 out of 5
Save 100% on your flight
per person
Oct 11 - Oct 15
found 1 day ago
Roundtrip non-stop flight included
Raleigh (RDU) to Seattle (SEA)
Hotel Theodore

Hotel Theodore

4 out of 5
per person
Oct 11 - Oct 15
found 1 day ago
Roundtrip non-stop flight included
Raleigh (RDU) to Seattle (SEA)
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Frequently asked questions

Can I catch a flight from Raleigh–Durham Airport to SEA right now?
For info on any present SEA quarantine requirements and travel advice, visit our Covid-19 Travel Advisor. Look before you book your flight, so you don't get caught out en route.
What terminal is United Airlines at Raleigh - Durham Intl. Airport (RDU)?
If you're flying with United Airlines from Raleigh–Durham Airport to Sea-Tac Airport, you might be able to find out the terminal information once you're issued with your boarding pass. If not, check with your airline.
Are there United Airlines non-stop flights from RDU to SEA?
Expect a stopover when flying from Raleigh–Durham Airport to Seattle - Tacoma Intl. Airport (SEA), as United Airlines doesn't offer any nonstop flights on this route. While waiting for your connection, you might like to grab a gripping novel or your favorite magazine from the airport bookstore to make the time go faster.
How long is a United Airlines flight from RDU to SEA?
Depending on good weather and no delays, your United Airlines flight from RDU to SEA should take approximately 8 hours and 11 minutes. That means you've got ample time to enjoy a meal, catch forty winks and check your itinerary before landing.
How many direct and indirect flights does United Airlines fly from RDU to SEA?
If you're considering a jaunt from RDU to SEA, you can pick from 3 United Airlines flights daily.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Seattle - Tacoma Intl. Airport (SEA), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.
United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Seattle

Coast Gateway Hotel

Coast Gateway Hotel

3.5 out of 5
18415 International Blvd, SeaTac, WA
This hotel features a restaurant, a gym, and a bar/lounge. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and ...
9.2/10 Wonderful! (7,313 reviews)
"Don’t let the appearance surprise you. It overlooks SeaTac but it’s very quiet. The staff was friendly, free parking, breakfast was good. It’s a bit dated but very clean. We would definitely stay there again."

Reviewed on Jul 16, 2025

Coast Gateway Hotel
SureStay Hotel by Best Western SeaTac Airport North

SureStay Hotel by Best Western SeaTac Airport North

3.5 out of 5
3000 S 176th St, SeaTac, WA
This hotel features a restaurant, an indoor pool, and a bar/lounge. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public ...
7.8/10 Good! (1,755 reviews)
"I really appreciated the text feature—I used it twice and it was so helpful. The woman at check in was super friendly and lovely"

Reviewed on Jul 16, 2025

SureStay Hotel by Best Western SeaTac Airport North
Red Roof Inn Seattle Airport - SEATAC

Red Roof Inn Seattle Airport - SEATAC

2 out of 5
16838 International Boulevard, SeaTac, WA
A gym, self parking, and laundry facilities are featured at this hotel. Guests will appreciate perks like free WiFi and a free airport shuttle. There's a safe ...
7.8/10 Good! (4,362 reviews)
"1 mile from airport free shuttle, great coffee in the morning. Everyone very friendly, one night was perfect. We felt safe here."

Reviewed on Jul 16, 2025

Red Roof Inn Seattle Airport - SEATAC
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.