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$145+ Cheap flights from Seattle to Jacksonville (SEA - JAX)

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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — JAX
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Jacksonville are usually found in September or October, booked 70 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to Jacksonville

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Jacksonville (JAX). 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 July 28, 2025.

Round-trip from

$307
(American Airlines)

One-way from

$145
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$528
From Seattle/Tacoma Intl to Jacksonville
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One-way flight from Seattle/Tacoma Intl to Jacksonville
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Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Seattle to Jacksonville

Cheapest flights from Seattle to Jacksonville
Explore the most affordable flight options available from Seattle to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This American Airlines deal was found by Cheapflights users on 7/25. 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.
Thu 8/288:08 pmSEA - JAX
1 stop10h 22mAmerican Airlines
Tue 9/21:00 pmJAX - SEA
1 stop8h 41mAmerican Airlines
Deal found 7/25$307
This Southwest deal was found by Cheapflights users on 7/25. 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.
Wed 9/310:10 amSEA - JAX
1 stop6h 50mSouthwest
Tue 9/161:20 pmJAX - SEA
2 stops10h 35mSouthwest
Deal found 7/25$312
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 10/111:40 pmSEA - JAX
1 stop7h 45mUnited Airlines
Wed 10/294:16 pmJAX - SEA
1 stop9h 25mUnited Airlines
Deal found 7/28$320
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 10/2911:40 amSEA - JAX
1 stop9h 19mDelta
Tue 11/45:10 amJAX - SEA
1 stop8h 04mDelta
Deal found 7/28$325
This Sun Country Air deal was found by Cheapflights users on 7/26. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 pmSEA - JAX
1 stop14h 13mSun Country Air
Mon 12/112:46 pmJAX - SEA
1 stop25h 42mSun Country Air
Deal found 7/26$385

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Jacksonville 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 July 28, 2025.
Use the filters below to find and compare flights from Seattle to Jacksonville that are best for you.

Fly from

Seattle

Fly to

Jacksonville

Route

Depart

Return

Price

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Thu 8/28

8:08 pm-9:30 am

1 stop10h 22m

Jacksonville

Tue 9/2

1:00 pm-6:41 pm

1 stop8h 41m

$307

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Wed 9/3

10:10 am-8:00 pm

1 stop6h 50m

Jacksonville

Tue 9/16

1:20 pm-8:55 pm

2 stops10h 35m

$312

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Wed 10/1

11:40 pm-10:25 am

1 stop7h 45m

Jacksonville

Wed 10/29

4:16 pm-10:41 pm

1 stop9h 25m

$320

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Mon 8/25

11:15 pm-10:47 am

1 stop8h 32m

Jacksonville

Sat 8/30

6:44 pm-11:59 pm

1 stop8h 15m

$371

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Sun 10/26

6:16 pm-11:07 am

1 stop13h 51m

$145

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Mon 9/8

11:38 pm-10:20 am

1 stop7h 42m

$154

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Tue 8/26

1:30 pm-11:59 pm

1 stop7h 29m

$163

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Tue 8/26

6:45 am-8:00 pm

2 stops10h 15m

$205

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Wed 9/24

7:34 pm-10:41 am

2 stops12h 07m

$218

SeattleJacksonville

SEA - JAX

SEAJAX

Seattle/Tacoma Intl

Thu 8/7

6:12 pm-8:55 pm

2 stops23h 43m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 12 results
1
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Best time to book a flight from Seattle to Jacksonville

Have a flexible travel schedule? Discover the best time to fly to Jacksonville 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Jacksonville

How far ahead should I book a flight from Seattle to Jacksonville?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Jacksonville. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Jacksonville, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Jacksonville (average of $278). Flying from Seattle to Jacksonville in March is currently the most expensive (average of $365). 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.

What is the cheapest time of day to fly from SEA to JAX?

Find hourly flight availability from Seattle to Jacksonville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

When flying from Seattle to Jacksonville, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 29% versus a flight in the morning.

Reviews of airlines servicing Jacksonville

Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated July 28, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Seattle to Jacksonville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Jacksonville. 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 Seattle to Jacksonville round-trip?

    According to our current data, American Airlines ($307), Southwest ($312), and Delta ($325) offers the cheapest pricing from Seattle to Jacksonville. These flights start at 36% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Sun Country Air. According to our data, you can fly for as low as $145. Users have also found prices from $154 and $163 on American Airlines and Delta, respectively.

  • Where are the most common layover locations when flying from Seattle to Jacksonville?

    The most popular layover on flights from Seattle to Jacksonville is Charlotte. Charlotte is followed by Atlanta in terms of the most popular layover location on flights from Seattle to Jacksonville.

  • What are some popular things to do or see while on a layover in Charlotte?

    If you're on a layover in Charlotte and looking for things to do, consider visiting Carowind, Mint Museum Uptown, or NASCAR Hall of Fame. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are located about 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Those on a layover in Charlotte in need of a rental car can book one at Charlotte Douglas for about $49.

  • What are some popular points of interest to see during a layover in Atlanta?

    Georgia Aquarium, Fox Theatre, and Tabernacle are the most popular attractions in Atlanta if you're in need of something to do during your layover. Georgia Aquarium, Fox Theatre, and Tabernacle can be visited by traveling about 8.6 mi, 9.3 mi, and 8.3 mi respectively from Atlanta Hartsfield-Jackson. Those on a layover in Atlanta in need of a rental car can book one at Atlanta Hartsfield-Jackson for about $57.

  • Where are the least popular layover locations for Seattle to Jacksonville flights?

    Seattle to Jacksonville flights have a layover in Dallas the least frequently.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Jacksonville 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 Seattle to Jacksonville?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Jacksonville (average of $278). Flying from Seattle to Jacksonville in March is currently the most expensive (average of $365). 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 Jacksonville?

Book flights to Jacksonville if you plan to visit one of these locations
Jacksonville Beach
Orange Park
Kingsland
Fernandina Beach
Waycross

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Top 4 airlines flying from Seattle to Jacksonville

Discover the top 4 airlines that operate flights from Seattle to Jacksonville. 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$306Average$463FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$327Average$469FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$336Average$487FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$370Average$561FlexibilityNo cancel feeOn-time63%

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