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$178+ Cheap flights from Wilmington to Seattle (ILM - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ILM — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$178
(Sun Country Air)

Popular in

April

Cheapest in

March

Average price

$586
From Wilmington New Hanover County to Seattle/Tacoma Intl
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One-way flight from Wilmington New Hanover County to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 7% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Wilmington to Seattle

Cheapest flights from Wilmington to Seattle
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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/12. 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 11/86:54 amILM - SEA
1 stop8h 49mAmerican Airlines
Wed 11/191:59 pmSEA - ILM
1 stop7h 18mAmerican Airlines
Deal found 6/12$309
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/255:51 pmILM - SEA
1 stop9h 04mDelta
Wed 7/3010:30 pmSEA - ILM
1 stop8h 13mDelta
Deal found 6/10$423
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 6/264:59 pmILM - SEA
1 stop10h 00mUnited Airlines
Mon 6/306:45 amSEA - ILM
2 stops13h 15mUnited Airlines
Deal found 6/11$474
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 9/22:16 pmILM - SEA
2 stops11h 13mAlaska Airlines
Tue 9/99:45 pmSEA - ILM
1 stop10h 09mAlaska Airlines
Deal found 6/11$515
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/259:45 amILM - SEA
3 stops40h 02mMultiple Airlines
Wed 7/306:27 pmSEA - ILM
1 stop14h 31mMultiple Airlines
Deal found 6/10$647

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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Wilmington to Seattle that are best for you.

Fly from

Wilmington

Fly to

Seattle

Route

Depart

Return

Price

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Sat 11/8

6:54 am-12:43 pm

1 stop8h 49m

Seattle/Tacoma Intl

Wed 11/19

1:59 pm-12:17 am

1 stop7h 18m

$309

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 7/25

5:51 pm-11:55 pm

1 stop9h 04m

Seattle/Tacoma Intl

Wed 7/30

10:30 pm-9:43 am

1 stop8h 13m

$423

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 6/26

4:59 pm-11:59 pm

1 stop10h 00m

Seattle/Tacoma Intl

Mon 6/30

6:45 am-11:00 pm

2 stops13h 15m

$474

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Tue 9/2

2:16 pm-10:29 pm

2 stops11h 13m

Seattle/Tacoma Intl

Tue 9/9

9:45 pm-10:54 am

1 stop10h 09m

$515

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 7/25

9:45 am-10:47 pm

3 stops40h 02m

Seattle/Tacoma Intl

Wed 7/30

6:27 pm-11:58 am

1 stop14h 31m

$647

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Thu 7/10

12:30 pm-7:59 am

1 stop22h 29m

$178

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Wed 11/5

5:45 pm-12:11 am

1 stop9h 26m

$247

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Sat 7/12

5:35 pm-11:57 pm

1 stop9h 22m

$279

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 7/11

9:45 am-4:25 pm

3 stops33h 40m

$280

WilmingtonSeattle

ILM - SEA

ILMSEA

Wilmington New Hanover County

Fri 6/20

5:10 pm-10:42 pm

1 stop8h 32m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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.
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, January is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $238). Flying from Wilmington to Seattle in July is currently the most expensive (average of $391). 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Wilmington to Seattle, such as Alaska Airlines, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Sun Country Air
6.9
Okay
345 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • What are the cheapest airlines flying from Wilmington to Seattle round-trip?

    Cheapflights users have booked flights from Wilmington to Seattle round-trip from $309. Other airlines that can offer you cheap pricing are Delta, from $423, and United Airlines, from $474. American Airlines is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Wilmington to Seattle one-way?

    For one-way options, check prices for Sun Country Air. According to our data, you can fly for as low as $178. Users have also found prices from $247 and $279 on Delta and American Airlines, respectively.

  • Can I find deals for flights from Wilmington to Seattle that include hotel bookings?

    Yes. In addition to deals on Wilmington to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Wilmington to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Wilmington to Seattle.

  • Can I find deals for business class flights from Wilmington to Seattle?

    Yes. Cheapflights offers flight deals from Wilmington to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Wilmington to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Wilmington to Seattle (average of $238). Flying from Wilmington to Seattle in July is currently the most expensive (average of $391). 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.

See more FAQs

Traveling to a place near Wilmington?

Book flights to Wilmington if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Wilmington to Seattle

Discover the top 2 airlines 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$618FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$587FlexibilityNo cancel feeOn-time71%

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