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$384+ Cheap flights from Wilmington to Seattle (ILM - SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
Sep 8 — Sep 151
Tue 9/8
Tue 9/15
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 August 9, 2026.

This United Airlines deal was found by Cheapflights users on 8/8. 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 8/294:44 pm -
1 stop8h 59m
Mon 8/3111:59 pm -
2 stops12h 38m
Deal found 8/8$384
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/264:00 pm -
1 stop8h 15m
Mon 10/510:48 pm -
1 stop10h 10m
Deal found 8/7$386
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/11:06 pm -
2 stops12h 37m
Tue 9/1511:59 pm -
2 stops12h 42m
Deal found 8/8$389
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/294:44 pm -
1 stop8h 59m
Sat 9/125:00 am -
1 stop7h 19m
Deal found 8/7$390
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Mon 8/244:44 pm -
1 stop8h 59m
Mon 8/3110:58 pm -
1 stop10h 05m
Deal found 8/6$425
This American Airlines deal was found by Cheapflights users on 8/5. 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 10/64:25 pm -
1 stop8h 32m
Tue 10/135:00 am -
1 stop7h 52m
Deal found 8/5$455
This United Airlines deal was found by Cheapflights users on 8/6. 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 8/261:06 pm -
2 stops12h 37m
Tue 9/111:59 pm -
2 stops12h 38m
Deal found 8/6$486

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 August 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$384
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$621
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
Highest demand for flights based on searches. 16% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 9, 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

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Mon 8/24

4:44 pm-10:43 pm

1 stop8h 59m

Seattle/Tacoma Intl

Mon 8/31

11:59 pm-3:37 pm

2 stops12h 38m

$431
Quickest round-trip

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Wed 9/2

4:44 pm-10:43 pm

1 stop8h 59m

Seattle/Tacoma Intl

Tue 9/8

10:58 pm-12:03 pm

1 stop10h 05m

$489

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Sat 8/29

4:44 pm-10:43 pm

1 stop8h 59m

Seattle/Tacoma Intl

Sun 9/6

11:59 pm-3:18 pm

2 stops12h 19m

$492

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Sat 9/5

4:44 pm-10:43 pm

1 stop8h 59m

Seattle/Tacoma Intl

Sat 9/12

11:59 pm-3:41 pm

2 stops12h 42m

$498

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Sat 8/29

4:44 pm-10:43 pm

1 stop8h 59m

Seattle/Tacoma Intl

Tue 9/1

5:00 am-11:57 pm

2 stops15h 57m

$565

WilmingtonSeattle

ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl

ILMSEA

Wilmington New Hanover County

Sat 8/29

7:00 am-7:14 pm

2 stops15h 14m

Seattle/Tacoma Intl

Mon 8/31

11:00 pm-12:03 pm

2 stops10h 03m

$590

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Sorted by cheapest first

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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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, November is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $388). Flying from Wilmington to Seattle in June is currently the most expensive (average of $666). 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?

Airfare is below average for this route at the moment.

Wilmington to Seattle flights typically cost between $546 and $643 in August.
The cheapest round-trip price found within the last 5 days was $384 on United Airlines (Aug 29-Aug 31).

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 9, 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
11,895 reviews

Comfort

7.2

Food

6.4

Entertainment

6.8

Overall

7.1

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.1
Good
11,895 reviews
American Airlines
7.1
Good
11,895 reviews

Comfort

7.2

Food

6.4

Entertainment

6.8

Overall

7.1

Crew

7.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 United Airlines fly from Wilmington to Seattle in about 8h 59m. The time it takes to get you to your destination can typically vary by up to . Wilmington and Seattle are separated by a distance of 2452 mi.

  • 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 40% 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, November is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $388). Flying from Wilmington to Seattle in June is currently the most expensive (average of $666). 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
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Marysville
Kent
Ellensburg
Fife
Ocean Shores
Lakewood
Poulsbo

Browse thousands of different options on Cheapflights for your next trip

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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 August 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$583FlexibilityNo cancel feeOn-time71%

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