HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$296+ Cheap flights from Wilmington to Seattle (ILM - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Wilmington to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Wilmington to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Wilmington (ILM) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 3, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$296
(United Airlines)

Popular in

April

Cheapest in

March

Average price

$638
From Wilmington New Hanover County to Seattle/Tacoma Intl
Search Deals
One-way flight from Wilmington New Hanover County to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Wilmington to Seattle

Cheapest flights from Wilmington to Seattle
Explore the most affordable flight options available from Wilmington to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/54:55 pmILM - SEA
1 stop10h 48mAmerican Airlines
lun. 8/1112:46 amSEA - ILM
1 stop7h 39mAmerican Airlines
Deal found 7/2$309
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/255:51 pmILM - SEA
1 stop9h 04mDelta
mié. 7/309:30 pmSEA - ILM
1 stop9h 13mDelta
Deal found 7/2$374
This Sun Country Air deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/2012:24 pmILM - SEA
1 stop22h 41mSun Country Air
mié. 7/239:18 amSEA - ILM
1 stop23h 28mSun Country Air
Deal found 7/1$450
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/133:12 pmILM - SEA
1 stop9h 54mUnited Airlines
mié. 9/246:25 amSEA - ILM
2 stops13h 44mUnited Airlines
Deal found 7/2$485
This Expedia deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/1410:48 amILM - SEA
1 stop14h 16mJetBlue
jue. 7/179:13 pmSEA - ILM
1 stop9h 50mJetBlue
Deal found 7/2$559
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/292:16 pmILM - SEA
2 stops11h 13mAlaska Airlines
mar. 9/29:45 pmSEA - ILM
1 stop10h 09mAlaska Airlines
Deal found 7/2$580
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/259:45 amILM - SEA
3 stops33h 40mMultiple Airlines
mié. 7/306:27 pmSEA - ILM
1 stop14h 31mMultiple Airlines
Deal found 7/1$630

Cheapflights Fare Finder

Customize your flight search to find flights from Wilmington to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 3, 2025.
Use the filters below to find and compare flights from Wilmington to Seattle that are best for you.

Fly from

Wilmington

Fly to

Seattle

Route

Depart

Return

Price

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

mar. 8/5

4:55 pm-12:43 am

1 stop10h 48m

Seattle/Tacoma Intl

lun. 8/11

12:46 am-11:25 am

1 stop7h 39m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

vie. 7/25

5:51 pm-11:55 pm

1 stop9h 04m

Seattle/Tacoma Intl

mié. 7/30

9:30 pm-9:43 am

1 stop9h 13m

$374

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

dom. 7/20

12:24 pm-8:05 am

1 stop22h 41m

Seattle/Tacoma Intl

mié. 7/23

9:18 am-11:46 am

1 stop23h 28m

$450

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

sáb. 9/13

3:12 pm-10:06 pm

1 stop9h 54m

Seattle/Tacoma Intl

mié. 9/24

6:25 am-11:09 pm

2 stops13h 44m

$485

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

lun. 7/14

10:48 am-10:04 pm

1 stop14h 16m

Seattle/Tacoma Intl

jue. 7/17

9:13 pm-10:03 am

1 stop9h 50m

$559

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

vie. 8/29

2:16 pm-10:29 pm

2 stops11h 13m

Seattle/Tacoma Intl

mar. 9/2

9:45 pm-10:54 am

1 stop10h 09m

$580

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

vie. 7/25

9:45 am-4:25 pm

3 stops33h 40m

Seattle/Tacoma Intl

mié. 7/30

6:27 pm-11:58 am

1 stop14h 31m

$630

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

mié. 7/9

4:59 pm-11:59 pm

1 stop10h 00m

$296

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

vie. 12/19

10:20 am-4:38 pm

1 stop9h 18m

$460

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

vie. 12/19

4:09 pm-11:18 pm

2 stops10h 09m

$564

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Wilmington to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Wilmington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Wilmington to Seattle

What is the cheapest month to book a flight from Wilmington to Seattle?

Currently, January is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $238). Flying from Wilmington to Seattle in July is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Wilmington to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated julio 3, 2025.
Read through reviews of airlines operating flights from Wilmington to Seattle, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Wilmington to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Wilmington to Seattle round-trip?

    Cheapflights users have booked flights from Wilmington to Seattle round-trip from $309. Other airlines that can offer you cheap pricing are Delta, from $374, and Sun Country Air, from $450. American Airlines is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Wilmington to Seattle one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $296. Users have also found prices from $460 and $559 on Delta and American Airlines, respectively.

  • Can I find deals for flights from Wilmington to Seattle that include hotel bookings?

    Yes. In addition to deals on Wilmington to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Wilmington to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Wilmington to Seattle.

  • Can I find deals for business class flights from Wilmington to Seattle?

    Yes. Cheapflights offers flight deals from Wilmington to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Wilmington to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $238). Flying from Wilmington to Seattle in July is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Wilmington?

Book flights to Wilmington if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Wilmington to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Raleigh to Seattle flights
Charlotte to Seattle flights
Norfolk to Seattle flights
Greensboro to Seattle flights
Fayetteville to Seattle flights
Greensboro to Portland flights
Charlotte to Portland flights
Asheville to Seattle flights
Raleigh to Portland flights
Asheville to Portland flights
Knoxville to Portland flights
Knoxville to Seattle flights
Myrtle Beach to Seattle flights
Myrtle Beach to Portland flights
Charlotte to Spokane flights
Norfolk to Portland flights
Blountville to Seattle flights
Raleigh to Spokane flights
Asheville to Spokane flights
Raleigh to Pasco flights
Greensboro to Spokane flights
Wilmington to Portland flights
Wilmington to Spokane flights
Norfolk to Spokane flights
Greensboro to Pasco flights
Jacksonville to Portland flights
New Bern to Seattle flights
Norfolk to Pasco flights
Fayetteville to Portland flights
Knoxville to Spokane flights
Raleigh to Walla Walla flights
Raleigh to Bellingham flights
Charlotte to Pasco flights
Jacksonville to Seattle flights
Blountville to Portland flights
Raleigh to Pullman flights
Knoxville to Pasco flights
Raleigh to Wenatchee flights
New Bern to Portland flights
Blountville to Spokane flights
Greenville to Seattle flights
Charlotte to Walla Walla flights
Knoxville to Walla Walla flights
Norfolk to Walla Walla flights
Greensboro to Pullman flights
Charlotte to Yakima flights
Charlotte to Pullman flights
New Bern to Spokane flights
Fayetteville to Pullman flights

Top 2 airlines flying from Wilmington to Seattle

Discover the top 2 airlines that operate flights from Wilmington to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$618FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$587FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.