ILM - SEA

$234 Find Cheap Flights from Wilmington to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Wilmington to Seattle departing on 6/29. 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
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$369
Overall average: $692
American Airlines
Wed 4/22Sun 4/26
ILM - SEA • 1 stop
Cheapest one-way
$234
Typical prices: $282-$393
Multiple Airlines
Mon 6/29
ILM - SEA • 2 stops
Top airlines
Cheapest • from $369 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Wilmington and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $480 (round-trip)
Shortest trip • 8h 14m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
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

Wed, Apr 22 - Sun, Apr 26
American Airlines Logo
4:50 pm - 12:44 am
ILM
-
SEA
10h 54m
1 stop
American Airlines Logo
10:47 pm - 12:29 pm
SEA
-
ILM
10h 42m
1 stop
$369American Airlines
Thu, Apr 23 - Sun, Apr 26
American Airlines Logo
4:50 pm - 10:47 pm
ILM
-
SEA
8h 57m
1 stop
American Airlines Logo
10:47 pm - 12:29 pm
SEA
-
ILM
10h 42m
1 stop
$389American Airlines
Thu, Apr 23 - Fri, May 1
United Airlines Logo
5:11 pm - 11:46 pm
ILM
-
SEA
9h 35m
1 stop
United Airlines Logo
10:53 pm - 3:42 pm
SEA
-
ILM
13h 49m
2 stops
$409United Airlines
Thu, Apr 9 - Wed, Apr 15
American Airlines Logo
3:08 pm - 9:04 pm
ILM
-
SEA
8h 56m
1 stop
American Airlines Logo
1:19 pm - 12:12 am
SEA
-
ILM
7h 53m
1 stop
$410American Airlines
Tue, May 19 - Fri, May 29
American Airlines Logo
4:50 pm - 10:58 pm
ILM
-
SEA
9h 08m
1 stop
American Airlines Logo
7:10 am - 7:16 pm
SEA
-
ILM
9h 06m
1 stop
$419American Airlines
Thu, Jul 2 - Sat, Jul 11
Sun Country Air Logo
12:30 pm - 10:46 pm
ILM
-
SEA
13h 16m
1 stop
Sun Country Air Logo
11:59 pm - 11:28 am
SEA
-
ILM
8h 29m
1 stop
$425Sun Country Air
Sat, Aug 22 - Fri, Aug 28
United Airlines Logo
4:09 pm - 10:42 pm
ILM
-
SEA
9h 33m
1 stop
United Airlines Logo
11:56 pm - 3:28 pm
SEA
-
ILM
12h 32m
2 stops
$440United Airlines
Wed, May 20 - Mon, May 25
American Airlines Logo
1:25 pm - 9:04 pm
ILM
-
SEA
10h 39m
1 stop
American Airlines Logo
9:35 pm - 8:20 am
SEA
-
ILM
7h 45m
1 stop
$470American Airlines
Tue, Apr 21 - Sun, Apr 26
American Airlines Logo
6:11 am - 1:15 pm
ILM
-
SEA
10h 04m
2 stops
American Airlines Logo
10:47 pm - 12:29 pm
SEA
-
ILM
10h 42m
1 stop
$475American Airlines
Mon, Aug 17 - Thu, Aug 27
American Airlines Logo
6:01 pm - 10:55 pm
ILM
-
SEA
7h 54m
1 stop
American Airlines Logo
5:05 am - 3:49 pm
SEA
-
ILM
7h 44m
1 stop
$489American Airlines
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 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 July, where the average cost of round-trip tickets is $692 and $595 respectively.

Good to know

Low seasonMarch
Cheapest flight$234
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 16% 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 $234 for a one-way ticket and $369 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 $653 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 $505 and an overall rating of 7.1.

  • 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 8290 reviews
7.9Comfort
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
Airline reviews

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

6.0 GoodAnonymous, Feb 2026
RDU - SEA
Read more Delta reviews

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

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.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

Plane from partner PSA was filthy. Plastic needs to be thoroughly cleaned. Really disgusting to look at and wonder about cleanliness of parts less visible.

Arrived early picked up my bag in a few minutes- great trip - thank you

I like that the flight attendant was very attentive and helpful. The meal menu could have more of an variety of food choices.

We missed our flight and got stranded in Miami where we had to rent a hotel we could not afford. they would not work with us because they said it was weather related even though the gate attendant said it was not. I could go on but trying to get satisfaction has wore me down, which I believe is the intent. My only solution is to never fly AA again.

Overall it was a good flight. Because we traveled on a Saturday we were upgraded to FC since my wife and I are both Executive Platinum. The only areas for improvement we noted are better snack assortment and perhaps a little nicer plane as American is flying some older planes now. Everything else on this flight was excellent, which is frankly not the norm for American since we have had multiple issues on prior AA flights.

Didn't get a seat assignment until the last minute even though i picked a seat.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

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

Information on your arrival and departure airports