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$231+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
Apr 26 — May 31
Sun 4/26
Sun 5/3
1 adult, Economy
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Cheap 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 March 27, 2026.

This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/223:03 pm
ILM
-
SEA
1 stop9h 20m
American Airlines
Sun 4/2610:47 pm
SEA
-
ILM
1 stop10h 42m
American Airlines
Deal found 3/27$389
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 5/65:01 pm
ILM
-
SEA
1 stop9h 58m
United Airlines
Sat 5/98:10 am
SEA
-
ILM
2 stops12h 34m
United Airlines
Deal found 3/25$394
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 9/157:30 am
ILM
-
SEA
2 stops14h 38m
United Airlines
Tue 9/2210:47 pm
SEA
-
ILM
2 stops10h 18m
United Airlines
Deal found 3/27$399
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 4/154:50 pm
ILM
-
SEA
1 stop8h 57m
American Airlines
Wed 4/221:19 pm
SEA
-
ILM
1 stop7h 53m
American Airlines
Deal found 3/25$409
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 4/216:11 am
ILM
-
SEA
2 stops11h 16m
American Airlines
Sun 4/2610:29 pm
SEA
-
ILM
1 stop7h 02m
American Airlines
Deal found 3/25$414
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 4/155:11 pm
ILM
-
SEA
1 stop9h 35m
United Airlines
Tue 5/57:00 am
SEA
-
ILM
2 stops13h 44m
United Airlines
Deal found 3/26$424
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 4/101:25 pm
ILM
-
SEA
1 stop9h 03m
American Airlines
Tue 4/1412:34 pm
SEA
-
ILM
1 stop8h 05m
American Airlines
Deal found 3/26$449
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 4/166:00 am
ILM
-
SEA
2 stops13h 37m
United Airlines
Wed 4/226:30 am
SEA
-
ILM
2 stops14h 14m
United Airlines
Deal found 3/22$455
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 11/102:32 pm
ILM
-
SEA
1 stop9h 33m
Alaska Airlines
Sat 11/149:15 pm
SEA
-
ILM
1 stop10h 26m
Alaska Airlines
Deal found 3/23$469
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 9/94:30 pm
ILM
-
SEA
1 stop10h 33m
Delta
Tue 9/1511:35 pm
SEA
-
ILM
1 stop7h 07m
Delta
Deal found 3/26$471

Find 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 March 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$389
(American Airlines)

One-way from

$231
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$459
Provider with most accurate pricing for Wilmington New Hanover County-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Wilmington New Hanover County-Seattle/Tacoma Intl flights.
Search Deals
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. 13% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 27, 2026.
Use the filters below to find and compare flights from Wilmington to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 4/16

4:50 pm-12:44 am

1 stop10h 54m

Seattle/Tacoma Intl

Wed 4/22

10:47 pm-12:29 pm

1 stop10h 42m

$389

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 5/6

5:01 pm-11:59 pm

1 stop9h 58m

Seattle/Tacoma Intl

Sat 5/9

8:10 am-11:44 pm

2 stops12h 34m

$394

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 4/16

6:00 am-4:37 pm

2 stops13h 37m

Seattle/Tacoma Intl

Wed 4/22

6:30 am-11:44 pm

2 stops14h 14m

$455

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Tue 4/21

1:25 pm-9:22 pm

2 stops10h 57m

Seattle/Tacoma Intl

Sun 4/26

10:47 pm-12:29 pm

1 stop10h 42m

$485

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 4/23

6:00 am-7:00 pm

2 stops16h 00m

Seattle/Tacoma Intl

Sun 4/26

12:08 pm-11:44 pm

1 stop8h 36m

$585

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 4/10

6:00 am-7:00 pm

2 stops16h 00m

Seattle/Tacoma Intl

Tue 4/14

12:08 pm-11:44 pm

1 stop8h 36m

$618

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 5/14

6:00 am-7:48 pm

2 stops16h 48m

Seattle/Tacoma Intl

Mon 5/18

10:41 pm-3:23 pm

2 stops13h 42m

$622

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 4/15

6:00 am-4:41 pm

2 stops13h 41m

Seattle/Tacoma Intl

Wed 4/22

8:00 am-11:44 pm

2 stops12h 44m

$630

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 4/22

5:11 pm-11:46 pm

1 stop9h 35m

Seattle/Tacoma Intl

Sun 4/26

11:59 pm-11:44 pm

2 stops20h 45m

$651
Cheapest one-way

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 6/4

4:30 pm-6:35 pm

2 stops53h 05m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Wilmington to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Wilmington to Seattle in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Wilmington-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Wilmington-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Wilmington-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Wilmington-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Wilmington-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, June is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $242). Flying from Wilmington to Seattle in January is currently the most expensive (average of $404). 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 March 27, 2026.
Read through reviews of airlines operating flights from Wilmington to Seattle, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,507 reviews

Comfort

7.2

Food

6.4

Overall

7.1

Entertainment

6.9

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,507 reviews
American Airlines
7.1
Good
11,507 reviews

Comfort

7.2

Food

6.4

Overall

7.1

Entertainment

6.9

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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.

  • How long is the flight from Wilmington to Seattle?

    Airlines like American Airlines and United Airlines fly from Wilmington to Seattle in about 9h 58m. The time it takes to get you to your destination can typically vary by up to 56m. Wilmington and Seattle are separated by a distance of 2452 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Wilmington to Seattle round-trip?

    Cheapflights users have booked flights from Wilmington to Seattle round-trip from $308. American Airlines is 38% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, June is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $242). Flying from Wilmington to Seattle in January is currently the most expensive (average of $404). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Snoqualmie
Ellensburg
Tukwila
Fife
Lakewood
Leavenworth
Issaquah
Aberdeen
Shoreline

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.

Top airline flying from Wilmington to Seattle

Discover the top airline 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 March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$508FlexibilityNo cancel feeOn-time71%

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