ILM - SEA

$232 Find Cheap Flights from Wilmington to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Wilmington to Seattle departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Wilmington to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Wilmington to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Wilmington to Seattle (ILM-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Wilmington to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Wilmington to Seattle

Sat, Dec 6 - Wed, Dec 10
Delta Logo
4:15 pm - 11:59 pmILM-SEA
10h 44m1 stop
Delta Logo
7:25 am - 5:16 pmSEA-ILM
6h 51m1 stop
$309Delta
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Sat, Dec 6 - Wed, Dec 10
American Airlines Logo
5:05 am - 1:06 pmILM-SEA
11h 01m2 stops
American Airlines Logo
5:18 am - 4:37 pmSEA-ILM
8h 19m1 stop
$314American Airlines
Find Deal
Wed, Jan 14 - Tue, Jan 20
American Airlines Logo
2:00 pm - 9:47 pmILM-SEA
10h 47m2 stops
American Airlines Logo
8:35 am - 10:57 pmSEA-ILM
11h 22m2 stops
$319American Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
United Airlines Logo
6:00 am - 4:07 pmILM-SEA
13h 07m2 stops
United Airlines Logo
8:40 am - 11:54 pmSEA-ILM
12h 14m2 stops
$419United Airlines
Find Deal
Thu, Jan 1 - Wed, Jan 7
American Airlines Logo
2:38 pm - 10:07 pmILM-SEA
10h 29m1 stop
American Airlines Logo
12:45 pm - 10:57 pmSEA-ILM
7h 12m1 stop
$444American Airlines
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Sat, Dec 13 - Thu, Jan 1
American Airlines Logo
6:18 am - 1:06 pmILM-SEA
9h 48m1 stop
American Airlines Logo
12:14 am - 12:31 pmSEA-ILM
9h 17m2 stops
$449American Airlines
Find Deal
Sat, Dec 13 - Thu, Jan 1
American Airlines Logo
9:10 am - 5:51 pmILM-SEA
11h 41m2 stops
American Airlines Logo
12:14 am - 12:31 pmSEA-ILM
9h 17m2 stops
$454American Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
United Airlines Logo
6:00 am - 4:07 pmILM-SEA
13h 07m2 stops
United Airlines Logo
7:00 am - 11:54 pmSEA-ILM
13h 54m2 stops
$459United Airlines
Find Deal
Sun, Nov 16 - Thu, Nov 20
Alaska Airlines Logo
2:27 pm - 10:30 pmILM-SEA
11h 03m1 stop
Alaska Airlines Logo
11:32 am - 6:53 pmSEA-ILM
28h 21m2 stops
$918Alaska Airlines
Find Deal
Tue, Nov 25 - Sun, Nov 30
Delta Logo
6:00 am - 3:35 pmILM-SEA
12h 35m2 stops
Delta Logo
11:00 pm - 9:38 amSEA-ILM
7h 38m1 stop
$1,028Delta
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $309 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 37% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$309
Typical prices: $427-$606
Delta
Sat 12/6Wed 12/10
ILM - SEA • 1 stop
Cheapest one-way
$319
Overall average: $444
Delta
Fri 12/19
ILM - SEA • 1 stop
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Booking Insights

KAYAK's insights & trends for Wilmington to Seattle flights

Get data-powered insights and trends into flights from Wilmington to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Wilmington to Seattle?

The average price of all round-trip flights from Wilmington to Seattle clicked on KAYAK for each day over the last 12 months.

For Wilmington to Seattle, Saturday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Wilmington, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from Wilmington to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Wilmington to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Wilmington to Seattle is September, where tickets cost $338 (return) on average. On the other hand, the most expensive months are April and May, where the average cost of round-trip tickets is $692 and $632 respectively.

Good to know

Low seasonNovember
Cheapest flight$309
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 14% increase in price.
Flight from Wilmington to Seattle

When to book flights from Wilmington to Seattle

Are your dates flexible? Find out the best times to travel from Wilmington to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Wilmington to Seattle

  • What is the cheapest flight from Wilmington to Seattle?

    In the last 3 days, the lowest price for a flight from Wilmington to Seattle was $319 for a one-way ticket and $309 for a round-trip.

  • Do I need a passport to fly between Wilmington and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Wilmington to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Wilmington to Seattle?

    SkyTeam, and oneworld are the airline alliances operating flights between Wilmington and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Wilmington to Seattle, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Wilmington to Seattle are Delta and American Airlines. With an average price for the route of $617 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $539 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Wilmington to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Wilmington to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Wilmington to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Wilmington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Wilmington to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Wilmington with another airline. Booking your flights between Wilmington and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Wilmington to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Wilmington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Wilmington to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Wilmington to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Wilmington to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8001 reviews
7.3Food
8.2Boarding
7.9Entertainment
7.9Comfort
8.5Crew
Airline reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

10.0 ExcellentAnonymous, Oct 2025CDG - SEA
Read more Delta reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

On time flight. Seat comfort could be better in the Comfort section.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Check in process was terrible. Lady at counter didn’t know what she was doing

Delayed and took off even later than the scheduled delay time

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

Very below average , plane from Dallas to Toyko was very poor designed plane. I had to sit for 13 hours next to fat man. Really bad seat and entertainment screen sucked

Sat on the ground in Cincinnati for 50 minutes before deplaning

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

This flight never occurred because AA couldn’t get their act together.

Boarding was very efficient. Everyone got on board and we got on our way very quickly. It was frustrating that the entertainment app was not functioning properly. I was not able to activate some of the movies offered. The crew on this flight appears to be pretty grumpy. They had no smile on their faces. I felt like they were doing us a favor for being there.

Delayed because of weather in Nashville. I think God or some higher power generally has cursed me when it comes to flying out of Charlotte on American. I'm delayed pretty much everytime. We need Team Cobra Kai types to come in and "sweep the leg(s)" of the Charlotte ops people on principle. Don't let the sweet southern rocking chairs fool you, Charlotte is a sinkhole

Everything you need to know for your flight from Wilmington to Seattle

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