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Delaware

$132+ Cheap flights from Seattle (SEA) to Delaware

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ILG
Dec 8 — Dec 151
Sun 12/8
Sun 12/15
1 adult, Economy
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Cheap flight deals from Seattle to Delaware

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Delaware (USDE). 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 December 3, 2024.

Find flight deals from Seattle to Delaware

Cheapest flights from Seattle to Delaware
Explore the most affordable flight options available from Seattle to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2024.

This Mytrip deal was found by Cheapflights users on 12/2. 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.
Mon 12/169:21 pmSEA - PHL
2 stops19h 51mSpirit Airlines
Wed 12/185:23 amPHL - SEA
2 stops21h 47mSpirit Airlines
Deal found 12/2$312
This Booking.com deal was found by Cheapflights users on 12/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/169:21 pmSEA - PHL
2 stops19h 51mMultiple Airlines
Wed 12/186:40 amPHL - SEA
1 stop9h 30mMultiple Airlines
Deal found 12/2$318
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/319:45 pmSEA - PHL
Nonstop4h 55mAlaska Airlines
Mon 1/136:32 pmPHL - SEA
Nonstop6h 23mAlaska Airlines
Deal found 12/2$337
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Tue 12/3112:31 amSEA - PHL
1 stop9h 30mAmerican Airlines
Fri 1/316:23 amPHL - SEA
1 stop9h 43mAmerican Airlines
Deal found 12/2$371
This Frontier deal was found by Cheapflights users on 12/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/185:40 pmSEA - PHL
1 stop14h 07mFrontier
Mon 1/66:40 amPHL - SEA
1 stop9h 30mFrontier
Deal found 12/2$378
This Delta deal was found by Cheapflights users on 12/2. 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.
Tue 12/3111:55 amSEA - PHL
1 stop8h 34mDelta
Mon 1/1311:37 amPHL - SEA
1 stop8h 17mDelta
Deal found 12/2$406
This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2912:20 pmSEA - PHL
2 stops10h 05mSouthwest
Fri 1/35:40 pmPHL - SEA
2 stops9h 45mSouthwest
Deal found 12/2$496
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Tue 12/2412:32 pmSEA - PHL
2 stops26h 04mUnited Airlines
Tue 1/76:00 amPHL - SEA
2 stops12h 45mUnited Airlines
Deal found 12/2$541
This American Airlines deal was found by Cheapflights users on 12/1. 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.
Tue 12/176:13 amSEA - SBY
2 stops11h 01mAmerican Airlines
Sat 12/218:14 amSBY - SEA
2 stops13h 51mAmerican Airlines
Deal found 12/1$1,143

Find flights from Seattle to Delaware within your budget

Customize your flight search to find flights from Seattle to Delaware 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 2,700,776 searches. Data last updated December 3, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Sun 1/19

1:30 pm-11:55 pm

1 stop7h 25m

Philadelphia

Sat 1/25

5:40 am-2:18 pm

1 stop11h 38m

$301

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 2/4

9:15 am-5:32 pm

Nonstop5h 17m

Philadelphia

Sun 2/9

6:32 pm-9:55 pm

Nonstop6h 23m

$307

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 1/10

5:30 am-11:40 pm

1 stop15h 10m

Philadelphia

Sun 1/12

10:05 pm-12:14 am

2 stops29h 09m

$309

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 1/14

7:10 am-7:14 pm

1 stop9h 04m

Philadelphia

Thu 1/16

6:32 pm-9:55 pm

Nonstop6h 23m

$311

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 5/29

11:59 pm-11:11 am

1 stop8h 12m

Philadelphia

Mon 6/2

12:10 pm-10:45 am

1 stop25h 35m

$330

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 1/9

9:00 am-9:40 pm

2 stops9h 40m

Philadelphia

Sun 1/12

6:00 am-1:22 pm

1 stop10h 22m

$341

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 1/3

10:56 pm-7:05 am

Nonstop5h 09m

Philadelphia

Thu 1/9

11:50 am-7:00 pm

1 stop10h 10m

$347

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 1/23

7:30 am-9:10 pm

2 stops10h 40m

Philadelphia

Thu 1/30

1:50 pm-10:30 pm

2 stops11h 40m

$353

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 12/18

5:40 pm-10:47 am

1 stop14h 07m

Philadelphia

Mon 1/6

6:40 am-1:10 pm

1 stop9h 30m

$378

SeattleSalisbury

SEA - SBY

SEASBY

Seattle/Tacoma Intl

Wed 1/1

7:24 am-8:16 pm

1 stop9h 52m

Salisbury-Ocean City

Wed 1/8

11:54 am-7:10 pm

1 stop10h 16m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 21 results
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Best time to book a flight from Seattle to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Seattle 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.

Travel insights for flights from Seattle to Delaware

Get recent, data-driven insights about flights from Seattle to Delaware including ideal travel times, pricing trends, and more.

Rainfall in Delaware by month

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

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

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

If weather is an important factor for your trip to Delaware, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Delaware

Get insights into the airlines that provide service to Delaware. 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 Delaware. Reviews last updated December 3, 2024.
Read through reviews of airlines operating flights from Seattle to Delaware, such as United Airlines, Delta and Spirit Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,951 reviews
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,513 reviews
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,698 reviews
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,141 reviews
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,951 reviews

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from Seattle to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Delaware?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Delaware. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $132. Alaska Airlines flights start at $139 while deals on American Airlines start at $144 one-way.

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

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

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

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

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

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

See more FAQs

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