$404+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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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
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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
Cheapest
Best
Last-minute
Cheapest flights from Wilmington to SeattleExplore 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 September 24, 2026.
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 September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:05 am -
1 stop9h 56m
Mon 12/145:35 pm -
2 stops15h 47m
Deal found 9/23![United Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/216:00 am -
2 stops12h 51m
Wed 10/287:00 am -
2 stops13h 44m
Deal found 9/21![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Tue 10/66:00 am -
2 stops16h 03m
Tue 10/1310:48 pm -
1 stop10h 10m
Deal found 9/22![United Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/217:15 am -
1 stop10h 02m
Wed 10/2810:31 am -
1 stop10h 28m
Deal found 9/21![American Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Fri 11/136:00 am -
2 stops14h 57m
Tue 11/1711:15 pm -
1 stop9h 07m
Deal found 9/22![United Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 9/20. 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 12/93:35 pm -
1 stop9h 59m
Sun 12/1311:16 am -
1 stop7h 36m
Deal found 9/20![American Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Wed 10/146:00 am -
2 stops12h 51m
Wed 10/2110:48 pm -
1 stop10h 10m
Deal found 9/22![United Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 9/20. 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 12/96:05 am -
2 stops13h 13m
Sun 12/1311:33 pm -
1 stop9h 49m
Deal found 9/20![United Airlines logo]()
$537
Best flights from Wilmington to SeattleDiscover carefully curated flight deals from Wilmington to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from Wilmington to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:05 am -
1 stop9h 56m
Mon 12/145:35 pm -
2 stops15h 47m
Deal found 9/23![United Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 9/23. 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.
Sat 10/103:02 pm -
1 stop7h 53m
Tue 10/1310:59 pm -
2 stops19h 37m
Deal found 9/23![Alaska Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/21. 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 2/66:00 am -
1 stop9h 59m
Tue 2/97:00 am -
2 stops13h 59m
Deal found 9/21![United Airlines logo]()
$534
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Tue 1/266:00 am -
2 stops15h 09m
Sat 1/305:30 pm -
2 stops15h 03m
Deal found 9/22![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/76:00 am -
3 stops17h 37m
Sat 10/177:00 am -
2 stops12h 59m
Deal found 9/19![United Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/106:00 am -
1 stop19h 36m
Tue 10/134:35 pm -
2 stops16h 23m
Deal found 9/19![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/66:00 am -
2 stops16h 03m
Sat 10/105:00 am -
1 stop7h 19m
Deal found 9/20![United Airlines logo]()
$784
Last-minute flights from Wilmington to SeattleDiscover last-minute flight deals from Wilmington to Seattle. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from Wilmington to Seattle. Data last updated September 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Tue 10/66:00 am -
2 stops16h 03m
Tue 10/1310:48 pm -
1 stop10h 10m
Deal found 9/22![United Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/20. 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 10/612:11 pm -
1 stop11h 04m
Sat 10/1010:48 pm -
1 stop10h 44m
Deal found 9/20![American Airlines logo]()
$576
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/94:14 pm -
1 stop9h 56m
Tue 10/1311:59 pm -
1 stop8h 39m
Deal found 9/19![American Airlines logo]()
$608
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/104:25 pm -
1 stop8h 32m
Tue 10/136:15 am -
1 stop9h 32m
Deal found 9/19![American Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Wed 10/146:00 am -
2 stops12h 51m
Wed 10/2110:48 pm -
1 stop10h 10m
Deal found 9/22![United Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/146:00 am -
2 stops12h 51m
Sun 10/1810:48 pm -
1 stop10h 10m
Deal found 9/19![United Airlines logo]()
$584
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/216:00 am -
2 stops12h 51m
Wed 10/287:00 am -
2 stops13h 44m
Deal found 9/21![United Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/217:15 am -
1 stop10h 02m
Wed 10/2810:31 am -
1 stop10h 28m
Deal found 9/21![American Airlines logo]()
$475
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 September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $404 (United Airlines) |
Popular in | September |
Cheapest in | November |
Average price | $686 |
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 7,457,451 searches. Data last updated September 24, 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
Cheapest round-trip
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Wed 12/9
6:05 am-1:01 pm
1 stop9h 56m
Seattle/Tacoma Intl
Mon 12/14
5:35 pm-12:22 pm
2 stops15h 47m
$404
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Sat 2/6
6:00 am-12:59 pm
1 stop9h 59m
Seattle/Tacoma Intl
Tue 2/9
7:00 am-11:59 pm
2 stops13h 59m
$534
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Tue 1/26
6:00 am-6:09 pm
2 stops15h 09m
Seattle/Tacoma Intl
Sat 1/30
5:30 pm-11:33 am
2 stops15h 03m
$539
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Wed 10/7
6:00 am-8:37 pm
3 stops17h 37m
Seattle/Tacoma Intl
Sat 10/17
7:00 am-10:59 pm
2 stops12h 59m
$585
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Sat 10/10
6:00 am-10:36 pm
1 stop19h 36m
Seattle/Tacoma Intl
Tue 10/13
4:35 pm-11:58 am
2 stops16h 23m
$682
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Sat 10/10
3:02 pm-7:55 pm
1 stop7h 53m
Seattle/Tacoma Intl
Tue 10/13
10:59 pm-9:36 pm
2 stops19h 37m
$738
Quickest round-trip
WilmingtonSeattle
ILM Wilmington New Hanover County - SEA Seattle/Tacoma Intl
ILMSEA
Wilmington New Hanover County
Tue 10/6
6:00 am-7:03 pm
2 stops16h 03m
Seattle/Tacoma Intl
Sat 10/10
5:00 am-3:19 pm
1 stop7h 19m
$784
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
ILM-SEA
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 September is currently the most expensive (average of $686). 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 $500 and $684 in December.The cheapest round-trip price found within the last 5 days was $404 on United Airlines (Dec 9-Dec 14).
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 September 24, 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.
Boarding
7.4
Overall
7.0
Crew
7.9
Entertainment
6.8
Comfort
7.2
Food
6.4
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
Boarding
7.4
Overall
7.0
Crew
7.9
Entertainment
6.8
Comfort
7.2
Food
6.4
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
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Wilmington and Seattle flights
Browse other Wilmington and Seattle flight options. Last updated on September 24, 2026.
Other flights from Wilmington
Browse through other flights departing from Wilmington. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
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 7,457,451 searches. Data last updated September 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$603 | FlexibilityNo cancel fee | On-time71% |