ILM - SEA

$203 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 7/17. 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

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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Flights 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, Nov 8 - Wed, Nov 19
American Airlines Logo
11:11 am - 5:20 pmILM-SEA
9h 09m1 stop
American Airlines Logo
11:42 pm - 10:04 amSEA-ILM
7h 22m1 stop
$309American Airlines
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Sat, Nov 8 - Wed, Nov 19
American Airlines Logo
4:17 pm - 11:15 pmILM-SEA
9h 58m2 stops
American Airlines Logo
10:46 pm - 8:19 amSEA-ILM
6h 33m1 stop
$314American Airlines
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Mon, Jun 30 - Thu, Jul 3
American Airlines Logo
4:55 pm - 12:44 amILM-SEA
10h 49m1 stop
American Airlines Logo
12:05 am - 12:24 pmSEA-ILM
9h 19m1 stop
$369American Airlines
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Mon, Jun 30 - Fri, Jul 4
American Airlines Logo
11:50 am - 7:10 pmILM-SEA
10h 20m1 stop
American Airlines Logo
6:24 am - 7:16 pmSEA-ILM
9h 52m2 stops
$374American Airlines
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Tue, Aug 5 - Tue, Aug 12
American Airlines Logo
6:07 pm - 10:55 pmILM-SEA
7h 48m1 stop
American Airlines Logo
10:50 pm - 10:50 amSEA-ILM
9h 00m1 stop
$380American Airlines
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Tue, Aug 5 - Tue, Aug 12
Delta Logo
10:28 am - 4:15 pmILM-SEA
8h 47m1 stop
Delta Logo
11:35 am - 10:57 pmSEA-ILM
8h 22m1 stop
$439Delta
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Tue, Jul 15 - Mon, Jul 21
United Airlines Logo
4:59 pm - 11:59 pmILM-SEA
10h 00m1 stop
United Airlines Logo
12:20 am - 3:24 pmSEA-ILM
12h 04m1 stop
$508United Airlines
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Tue, Aug 5 - Tue, Aug 12
United Airlines Logo
4:59 pm - 11:59 pmILM-SEA
10h 00m1 stop
United Airlines Logo
7:34 pm - 3:24 pmSEA-ILM
16h 50m2 stops
$534United Airlines
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Tue, Sep 2 - Tue, Sep 9
Alaska Airlines Logo
2:16 pm - 10:29 pmILM-SEA
11h 13m2 stops
Alaska Airlines Logo
9:45 pm - 10:54 amSEA-ILM
10h 09m1 stop
$535Alaska Airlines
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Wed, Sep 24 - Sun, Sep 28
Delta Logo
5:45 pm - 12:11 amILM-SEA
9h 26m1 stop
Delta Logo
8:15 pm - 9:36 amSEA-ILM
10h 21m2 stops
$536Delta
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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 March, where tickets cost $444 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $760 and $638 respectively.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$203
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 7% 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 $203 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Wilmington and Seattle, with oneworld 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 $618 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $591 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.
8.0
DeltaOverall score based on 7964 reviews
8.5Crew
7.9Comfort
7.9Entertainment
7.3Food
8.2Boarding
Airline reviews

Food from the flight from Atlanta to Santiago was very poor..

4.0 OkayAnonymous, May 2025FAI - SEA
Read more Delta reviews

Food from the flight from Atlanta to Santiago was very poor..

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

The WiFi didn't seem as fast as it normally is

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Flight left early and arrived early. the whole trip was excellent.

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

The seats are uncomfortable, feels like a small seat pad on plywood.

Long 5 hour and 45 min flight and only one drink service and cookie snack

Newark airport grounded inbound flight and only announced when the flight was about to start taxing.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

American Airlines initially postponed the flight. Then they cancelled it an rescheduled us on a flight that would take over 24 hours with multiple stops. They then changed this flight to a reasonable alternative the next day which they later cancelled and replaced with a flight that would take off with an additional 16 hour delay. They blamed weather but I noticed (at 4am) that Delta had direct flights from Charlotte to Detroit. I went on line. Booked it and was in Detroit buy 9am. The interesting thing is they did a similar thing to a family member just 2 days earlier. I don't think I will fly American unless I have to.

I was a little disappointed of not having an android charger. Only one it was for an iPhone. I've flown American in the past and had access to one.

At least it was a short flight. Greyhound with wings.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

One of the best flights I’ve had. So smooth.

This flight didn’t happen because AA agents didn’t let us board the flight

Checking in at the counter was very disappointing. The lady had a very bad attitude and smart at me. She had no smile, did not greet me by name, or acknowledge me as a valued customer. Poor reflection of the airline.

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

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