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$226+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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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 August 18, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$226
(American Airlines)

Popular in

April

Cheapest in

September

Average price

$612
From Wilmington New Hanover County to Seattle/Tacoma Intl
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One-way flight from Wilmington New Hanover County to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 18, 2025.

This American Airlines deal was found by Cheapflights users on 8/17. 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 9/2612:11 pmILM - SEA
1 stop9h 17mAmerican Airlines
Mon 9/2911:38 pmSEA - ILM
1 stop6h 54mAmerican Airlines
Deal found 8/17$309
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 9/82:40 pmILM - SEA
1 stop8h 19mAmerican Airlines
Mon 9/156:42 amSEA - ILM
1 stop8h 41mAmerican Airlines
Deal found 8/17$310
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Sat 11/85:05 amILM - SEA
2 stops11h 49mAmerican Airlines
Wed 11/196:19 amSEA - ILM
1 stop9h 33mAmerican Airlines
Deal found 8/17$314
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 12/255:28 amILM - SEA
1 stop9h 28mAmerican Airlines
Fri 1/211:33 pmSEA - ILM
1 stop7h 27mAmerican Airlines
Deal found 8/17$339
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 9/137:05 amILM - SEA
2 stops17h 13mUnited Airlines
Mon 9/2211:54 pmSEA - ILM
2 stops10h 59mUnited Airlines
Deal found 8/16$419
This Delta deal was found by Cheapflights users on 8/17. 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.
Mon 9/85:34 pmILM - SEA
1 stop9h 25mDelta
Mon 9/157:05 pmSEA - ILM
2 stops15h 46mDelta
Deal found 8/17$425
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 8/281:07 pmILM - SEA
1 stop8h 53mAmerican Airlines
Tue 9/210:50 pmSEA - ILM
1 stop9h 04mAmerican Airlines
Deal found 8/17$459
This American Airlines deal was found by Cheapflights users on 8/17. 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 8/277:00 amILM - SEA
1 stop10h 51mAmerican Airlines
Fri 8/2912:46 amSEA - ILM
1 stop7h 39mAmerican Airlines
Deal found 8/17$497
This United Airlines deal was found by Cheapflights users on 8/17. 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 8/287:10 amILM - SEA
1 stop8h 53mUnited Airlines
Tue 9/211:54 pmSEA - ILM
2 stops10h 59mUnited Airlines
Deal found 8/17$519

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 August 18, 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

Sat 9/13

12:31 pm-6:28 pm

1 stop8h 57m

Seattle/Tacoma Intl

Mon 9/22

11:38 pm-9:32 am

1 stop6h 54m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 9/26

12:11 pm-7:59 pm

1 stop10h 48m

Seattle/Tacoma Intl

Mon 9/29

11:38 pm-9:32 am

1 stop6h 54m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 1/14

9:11 am-5:24 pm

1 stop11h 13m

Seattle/Tacoma Intl

Tue 1/20

1:56 pm-11:25 pm

1 stop6h 29m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Sat 11/8

5:05 am-12:53 pm

1 stop10h 48m

Seattle/Tacoma Intl

Wed 11/19

5:24 am-4:43 pm

1 stop8h 19m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 9/17

3:13 pm-10:29 pm

1 stop10h 16m

Seattle/Tacoma Intl

Thu 9/25

11:44 am-10:44 pm

1 stop8h 00m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Mon 9/8

2:40 pm-7:59 pm

1 stop8h 19m

Seattle/Tacoma Intl

Mon 9/15

6:42 am-6:23 pm

1 stop8h 41m

$310

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 12/25

5:28 am-11:56 am

1 stop9h 28m

$226

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 8/29

2:11 pm-7:33 pm

1 stop8h 22m

$319

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Sat 8/23

11:13 am-9:59 pm

1 stop13h 46m

$337

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Sat 8/23

2:11 pm-10:26 pm

1 stop11h 15m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 16 results
1
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 June is currently the most expensive (average of $389). 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.

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 August 18, 2025.
Read through reviews of airlines operating flights from Wilmington to Seattle, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $308. Another airline that can offer you cheap pricing is American Airlines. Delta is 44% 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, 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 June is currently the most expensive (average of $389). 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
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Wilmington to Seattle

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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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$818FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$562FlexibilityNo cancel feeOn-time71%

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