$182 Cheap Flights from Wilmington (ILM) to Seattle (SEA)

View $182 flight on Sun, Jun 7, 2026Opens in a new window

Popular airlines from Wilmington Intl. Airport (ILM) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Wilmington to Seattle (ILM-SEA)

Prices were available within the past 7 days and start at $182 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Feb 13 - Sun, Feb 15
ILM
Wilmington
SEA
Seattle
$299 Roundtrip, found 4 hours ago
$299
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Feb 13 from Wilmington to Seattle, returning Sun, Feb 15, priced at $299 found 4 hours ago
American Airlines
Fri, Feb 13 - Sun, Feb 15
ILM
Wilmington
SEA
Seattle
$304 Roundtrip, found 4 hours ago
$304
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Feb 13 from Wilmington to Seattle, returning Sun, Feb 15, priced at $304 found 4 hours ago
Delta
Fri, Jan 9 - Sat, Jan 24
ILM
Wilmington
SEA
Seattle
$309 Roundtrip, found 3 hours ago
$309
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Jan 9 from Wilmington to Seattle, returning Sat, Jan 24, priced at $309 found 3 hours ago
American Airlines
Fri, Feb 13 - Sun, Feb 15
ILM
Wilmington
SEA
Seattle
$309 Roundtrip, found 4 hours ago
$309
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Feb 13 from Wilmington to Seattle, returning Sun, Feb 15, priced at $309 found 4 hours ago
United
Fri, Nov 21 - Fri, Dec 5
ILM
Wilmington
SEA
Seattle
$314 Roundtrip, found 11 hours ago
$314
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Nov 21 from Wilmington to Seattle, returning Fri, Dec 5, priced at $314 found 11 hours ago
American Airlines
Thu, Dec 11 - Fri, Jan 9
ILM
Wilmington
SEA
Seattle
$319 Roundtrip, found 5 hours ago
$319
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Dec 11 from Wilmington to Seattle, returning Fri, Jan 9, priced at $319 found 5 hours ago
United
Tue, Jan 27 - Sun, Feb 1
ILM
Wilmington
SEA
Seattle
$327 Roundtrip, found 3 days ago
$327
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jan 27 from Wilmington to Seattle, returning Sun, Feb 1, priced at $327 found 3 days ago
United
Wed, Jan 28 - Sun, Feb 1
ILM
Wilmington
SEA
Seattle
$328 Roundtrip, found 1 day ago
$328
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 28 from Wilmington to Seattle, returning Sun, Feb 1, priced at $328 found 1 day ago
Alaska Airlines
Tue, Jan 20 - Fri, Jan 30
ILM
Wilmington
SEA
Seattle
$409 Roundtrip, found 19 hours ago
$409
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Wilmington to Seattle, returning Fri, Jan 30, priced at $409 found 19 hours ago
JetBlue Airways
Mon, Jun 15 - Tue, Jun 23
ILM
Wilmington
SEA
Seattle
$548 Roundtrip, found 12 hours ago
$548
Roundtrip
found 12 hours ago
Select JetBlue Airways flight, departing Mon, Jun 15 from Wilmington to Seattle, returning Tue, Jun 23, priced at $548 found 12 hours ago

Find the cheapest month to fly from Wilmington (ILM) to Seattle (SEA)

March is typically the cheapest month to fly

From $248 - $743 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $339
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $339

Frequently asked questions

How much does a flight from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $182 or cheap return flight from $299 from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your trip for February can help you save, as it's the cheapest month for flights between ILM and SEA. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from ILM to SEA. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to hop on a flight with a layover when traveling from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ILM to SEA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from ILM to SEA are generally more expensive. To lock in the lowest rates, start looking for flights well in advance. That being said, if your travel plans are flexible, you may find a cheap ticket right before your journey.
Is it cheaper to book an ILM to SEA flight and hotel package?
Opting for an ILM to SEA flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our impressive range of accommodations and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Wilmington Intl. Airport (ILM) to Seattle - Tacoma Intl. Airport (SEA)?
It's generally possible to reschedule or cancel your ILM to SEA flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Wilmington Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$298
Distance
2452 mi

Book with confidence

Wilmington to Seattle Flights

The cheapest times to fly from Wilmington to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Wilmington to Seattle are during the month of February. You can find some of the cheapest flights from Wilmington to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Wilmington to Seattle

Sunday is one of the best days to book for cheap flights from Wilmington to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Wilmington to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Wilmington to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $182 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Wilmington to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Wilmington to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Wilmington to Seattle Flights

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*Available to One Key members.