$143+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — JAX
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Jacksonville
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Cheapest flights from Seattle to JacksonvilleExplore 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 August 5, 2026.
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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop20h 14m
Mon 9/147:46 pm -
2 stops22h 22m
Deal found 8/2![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop20h 14m
Tue 9/157:46 pm -
2 stops25h 24m
Deal found 8/2![Multiple Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:00 am -
1 stop7h 33m
Fri 9/114:45 pm -
1 stop9h 00m
Deal found 8/1![United Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/2211:56 am -
1 stop8h 59m
Sat 8/295:25 pm -
1 stop9h 32m
Deal found 7/31![Delta logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:06 am -
1 stop30h 40m
Sun 11/86:46 pm -
2 stops42h 05m
Deal found 7/31![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:48 pm -
1 stop19h 57m
Tue 9/87:05 pm -
2 stops23h 03m
Deal found 8/4![Multiple Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 9/511:00 pm -
1 stop9h 45m
Fri 9/112:00 pm -
2 stops10h 45m
Deal found 7/31![Southwest logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:16 pm -
1 stop19h 46m
Fri 11/66:46 pm -
2 stops26h 40m
Deal found 7/30![Multiple Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:10 am -
1 stop9h 44m
Sat 9/54:45 pm -
1 stop8h 58m
Deal found 8/1![United Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 9/57:15 am -
1 stop9h 09m
Sat 9/196:36 am -
1 stop9h 14m
Deal found 8/1![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/15:10 am -
1 stop9h 03m
Thu 9/106:18 pm -
1 stop8h 53m
Deal found 8/2![American Airlines logo]()
$384
Best flights from Seattle to JacksonvilleDiscover carefully curated flight deals from Seattle to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Seattle to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 9/511:00 pm -
1 stop9h 45m
Fri 9/114:30 pm -
1 stop8h 15m
Deal found 7/31![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:40 am -
2 stops11h 40m
Fri 9/118:15 am -
1 stop8h 07m
Deal found 8/1![United Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 8/4. 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 10/1611:10 pm -
1 stop8h 54m
Tue 10/273:15 pm -
1 stop8h 35m
Deal found 8/4![Delta logo]()
$415
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:00 am -
1 stop7h 33m
Sat 9/194:45 pm -
1 stop9h 00m
Deal found 8/1![United Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 8/2. 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.
Thu 9/1711:25 am -
1 stop7h 25m
Thu 9/244:50 pm -
1 stop9h 10m
Deal found 8/2![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Wed 9/911:59 pm -
1 stop7h 46m
Wed 9/164:45 pm -
1 stop9h 00m
Deal found 8/2![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 7/31. 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 8/189:10 am -
1 stop9h 33m
Tue 8/255:34 pm -
1 stop9h 23m
Deal found 7/31![Delta logo]()
$499
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am -
1 stop9h 25m
Wed 8/264:45 pm -
1 stop8h 58m
Deal found 8/1![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:04 pm -
1 stop8h 56m
Wed 10/74:58 pm -
1 stop8h 58m
Deal found 8/1![United Airlines logo]()
$496
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/168:10 am -
1 stop9h 44m
Tue 9/227:05 am -
2 stops13h 47m
Deal found 8/4![United Airlines logo]()
$506
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Fri 10/1611:14 pm -
1 stop8h 46m
Tue 10/279:45 am -
2 stops14h 11m
Deal found 8/3![United Airlines logo]()
$530
Last-minute flights from Seattle to JacksonvilleDiscover last-minute flight deals from Seattle to Jacksonville. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Jacksonville. Data last updated August 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/2211:56 am -
1 stop8h 59m
Sat 8/295:25 pm -
1 stop9h 32m
Deal found 7/31![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 8/2211:59 pm -
1 stop7h 46m
Wed 8/264:45 pm -
1 stop8h 58m
Deal found 7/31![United Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 8/4. 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 8/259:10 am -
1 stop9h 33m
Thu 9/105:40 pm -
1 stop9h 15m
Deal found 8/4![Delta logo]()
$384
This Southwest deal was found by Cheapflights users on 8/4. 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 8/267:10 am -
2 stops9h 30m
Wed 9/95:25 pm -
1 stop9h 15m
Deal found 8/4![Southwest logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:48 pm -
1 stop19h 57m
Tue 9/87:05 pm -
2 stops23h 03m
Deal found 8/4![Multiple Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:10 am -
1 stop9h 44m
Sat 9/54:45 pm -
1 stop8h 58m
Deal found 8/1![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:00 am -
1 stop7h 33m
Fri 9/114:45 pm -
1 stop9h 00m
Deal found 8/1![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 9/511:00 pm -
1 stop9h 45m
Fri 9/112:00 pm -
2 stops10h 45m
Deal found 7/31![Southwest logo]()
$372
This American Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 9/57:15 am -
1 stop9h 09m
Sat 9/196:36 am -
1 stop9h 14m
Deal found 8/1![American Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop20h 14m
Mon 9/147:46 pm -
2 stops22h 22m
Deal found 8/2![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop20h 14m
Tue 9/157:46 pm -
2 stops25h 24m
Deal found 8/2![Multiple Airlines logo]()
$351
One-way flights from Seattle to JacksonvilleSearch for one-way flight options from Seattle to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Seattle to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:37 pm -
2 stops24h 33m
Deal found 8/2![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:25 pm -
2 stops20h 36m
Deal found 8/4![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:25 pm -
2 stops20h 36m
Deal found 8/2![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:41 pm -
2 stops19h 10m
Deal found 8/2![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:06 pm -
2 stops20h 04m
Deal found 8/1![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:06 pm -
2 stops20h 04m
Deal found 7/31![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:48 pm -
2 stops18h 22m
Deal found 7/31![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:15 pm -
2 stops19h 46m
Deal found 7/31![Frontier logo]()
$173
Find 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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $322 (Kiwi.com) |
One-way from | $143 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $440 |
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 August 5, 2026.
Use the filters below to find and compare flights from Seattle to Jacksonville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Sat 9/5
11:00 pm-11:45 am
1 stop9h 45m
Jacksonville
Fri 9/11
4:30 pm-9:45 pm
1 stop8h 15m
$367
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Sat 9/5
8:40 am-11:20 pm
2 stops11h 40m
Jacksonville
Fri 9/11
8:15 am-1:22 pm
1 stop8h 07m
$372
Quickest round-trip
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Sat 9/5
5:00 am-3:33 pm
1 stop7h 33m
Jacksonville
Sat 9/19
4:45 pm-10:45 pm
1 stop9h 00m
$374
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Wed 9/9
11:59 pm-10:45 am
1 stop7h 46m
Jacksonville
Wed 9/16
4:45 pm-10:45 pm
1 stop9h 00m
$379
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Thu 9/17
11:25 am-9:50 pm
1 stop7h 25m
Jacksonville
Thu 9/24
4:50 pm-11:00 pm
1 stop9h 10m
$391
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Fri 10/16
11:10 pm-11:04 am
1 stop8h 54m
Jacksonville
Tue 10/27
3:15 pm-8:50 pm
1 stop8h 35m
$415
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Wed 8/19
7:00 am-7:25 pm
1 stop9h 25m
Jacksonville
Wed 8/26
4:45 pm-10:43 pm
1 stop8h 58m
$494
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Wed 9/23
11:04 pm-11:00 am
1 stop8h 56m
Jacksonville
Wed 10/7
4:58 pm-10:56 pm
1 stop8h 58m
$496
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Tue 8/18
9:10 am-9:43 pm
1 stop9h 33m
Jacksonville
Tue 8/25
5:34 pm-11:57 pm
1 stop9h 23m
$499
SeattleJacksonville
SEA - JAX
SEAJAX
Seattle/Tacoma Intl
Wed 9/16
8:10 am-8:54 pm
1 stop9h 44m
Jacksonville
Tue 9/22
7:05 am-5:52 pm
2 stops13h 47m
$506
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Seattle to Jacksonville
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Jacksonville in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Jacksonville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Jacksonville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Jacksonville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SEA-JAX
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?
To ensure you get the cheapest price possible for a flight from Seattle to Jacksonville, you should look to book at least 74 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, October is the cheapest month in which you can book a flight from Seattle to Jacksonville (average of $443). Flying from Seattle to Jacksonville in March is currently the most expensive (average of $537). 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.
How much does it cost to fly round-trip from Seattle to Jacksonville?
Airfare is below average for this route at the moment.
Seattle to Jacksonville flights typically cost between $370 and $571 in September.The cheapest round-trip price found within the last 5 days was $322 on Multiple Airlines (Sep 8-Sep 14).
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 August 5, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines 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.
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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.
Traveling to a place near Jacksonville?
Book flights to Jacksonville if you plan to visit one of these locationsJacksonville Beach
Fernandina Beach
Orange Park
Kingsland
Waycross
Atlantic Beach
Yulee
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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 August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$290 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$314 | Average$508 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$328 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$366 | Average$488 | FlexibilityNo cancel fee | On-time63% |