SEA - JAX

$143 Find Cheap Flights from Seattle to Jacksonville - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Jacksonville departing on 8/26. 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, 0 bags

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Everything you should know

Cheapest round-trip
$322
Typical prices: $366-$600
Multiple Airlines
Tue 9/8Mon 9/14
SEA - JAX • 1 stop
Cheapest one-way
$143
Typical prices: $256-$459
Frontier
Wed 8/26
SEA - JAX • 2 stops
Top airlines
Cheapest • from $362 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Seattle and Jacksonville. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $477 (round-trip)
Shortest trip • 6h 55m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
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When to travel
Cheapest • 9% price drop
Most popular
Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Jacksonville (SEA-JAX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Jacksonville 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 Seattle to Jacksonville

Tue, Sep 8 - Mon, Sep 14
Multiple Airlines Logo
8:48 pm - 8:02 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
20h 14m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
7:46 pm - 3:08 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
22h 22m2 stops Atlanta Hartsfield-Jackson Denver Intl
$322Multiple Airlines
Wed, Oct 14 - Mon, Oct 19
Multiple Airlines Logo
11:06 am - 5:51 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
27h 45m2 stops Los Angeles Atlanta Hartsfield-Jackson
Multiple Airlines Logo
9:39 am - 6:26 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
11h 47m1 stop Los Angeles
$344Multiple Airlines
Sat, Sep 5 - Fri, Sep 11
United Airlines Logo
5:00 am - 3:33 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
7h 33m1 stop Denver Intl
United Airlines Logo
4:45 pm - 10:45 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
9h 00m1 stop Chicago O'Hare Intl
$362United Airlines
Sat, Sep 5 - Fri, Sep 11
United Airlines Logo
8:40 am - 11:20 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
11h 40m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
8:15 am - 1:22 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
8h 07m1 stop Denver Intl
$372United Airlines
Sat, Sep 5 - Fri, Sep 11
Southwest Logo
11:00 pm - 3:05 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
13h 05m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
4:50 pm - 12:45 amJAX  Jacksonville-SEA Seattle/Tacoma Intl
10h 55m2 stops Denver Intl Phoenix Sky Harbor Intl
$377Southwest
Sun, Sep 6 - Mon, Sep 14
American Airlines Logo
5:15 am - 5:21 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
9h 06m1 stop Charlotte Douglas
American Airlines Logo
3:45 pm - 11:52 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
11h 07m1 stop Miami
$379American Airlines
Sat, Sep 5 - Sat, Sep 19
American Airlines Logo
7:15 am - 7:24 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
9h 09m1 stop Charlotte Douglas
American Airlines Logo
6:36 am - 12:50 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
9h 14m1 stop Chicago O'Hare Intl
$379American Airlines
Tue, Aug 25 - Thu, Sep 10
Delta Logo
9:10 am - 9:43 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
9h 33m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:40 pm - 11:55 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
9h 15m1 stop Minneapolis St Paul
$384Delta
Tue, Aug 25 - Wed, Sep 9
Delta Logo
1:30 pm - 11:55 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
7h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:59 pm - 11:58 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
7h 59m1 stop Atlanta Hartsfield-Jackson
$384Delta
Wed, Aug 26 - Wed, Sep 9
Southwest Logo
7:10 am - 7:40 pmSEA  Seattle/Tacoma Intl-JAX Jacksonville
9h 30m2 stops Phoenix Sky Harbor Intl Nashville Intl
Southwest Logo
5:25 pm - 11:40 pmJAX  Jacksonville-SEA Seattle/Tacoma Intl
9h 15m1 stop Chicago Midway
$389Southwest
Booking Insights

KAYAK's insights & trends for Seattle to Jacksonville flights

Get data-powered insights and trends into flights from Seattle to Jacksonville to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Jacksonville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Jacksonville departing in September.

Flight prices are below average for this route right now.

Flights to Jacksonville from Seattle usually cost between $370 and $505 in September.
The lowest price found in the past 5 days was $322 on Multiple Airlines (Sep 8-Sep 14).

What is the cheapest month to fly from Seattle to Jacksonville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Jacksonville, 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 Seattle to Jacksonville is October, where tickets cost $443 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $537 and $517 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Jacksonville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Jacksonville, you should book around 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low season

May

Cheapest flight

$143
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Seattle to Jacksonville

When to book flights from Seattle to Jacksonville

Are your dates flexible? Find out the best times to travel from Seattle to Jacksonville 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 Seattle to Jacksonville

  • What parking facilities are available at Seattle-Tacoma International Airport?

    For both long-term and short-term parking, the airport offers about 12,100 spots accessible for both leisure and business passengers. Travelers who reserve parking in advance might receive discounts on both short and long-term parking. The garage exit lanes and easy pay machines accept American Express, MasterCard, and Visa credit cards.

  • How do I get from the city center to Seattle-Tacoma International Airport?

    Seattle-Tacoma International Airport is about 12 miles south ofSeattle and 22 miles north of Tacoma. The Link Right Rail is the easiest way to get to the airport from downtown Seattle. To get to the airport, you can also use the bus services provided by King County Metro and Sound Transit. Only Wingz, Lyft, and Uber are permitted to provide ridesharing services within airports.

  • What accessibility services are provided at Seattle-Tacoma International Airport?

    Seattle-Tacoma International Airport aims to give passengers a safe, convenient, and comfortable travel experience while at the airport. The airlines that fly out of the airport provide complimentary wheelchair transportation for travelers with mobility issues. In order to accommodate travelers from certain ground transportation points to ticketing counters, the airport now offers a pre-security wheelchair service. The airport offers portable induction loops for individuals who need T-coil hearing aids at specific spots and employs Aira to help the visually impaired.

  • How do I get from Jacksonville International Airport to downtown Jacksonville?

    The cheapest way to get from Jacksonville International Airport to downtown Jacksonville is by taking the Line 1 bus, which you can catch from the JIA Station and takes approximately 1 hour to get to the city center. You can also opt to take a taxi, rideshare service, or get a car rental from the rental car center at the airport, which will take you approximately 20 minutes to get to downtown Jacksonville.

  • What is the cheapest flight from Seattle to Jacksonville?

    In the last 5 days, the lowest price for a flight from Seattle to Jacksonville was $143 for a one-way ticket and $322 for a round-trip.

  • Do I need a passport to fly between Seattle and Jacksonville?

    A passport is not required to fly from Seattle to Jacksonville.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Jacksonville?

    Only American Airlines offers inflight Wi-Fi service on the Seattle to Jacksonville flight route.

  • Which aircraft models fly most regularly from Seattle to Jacksonville?

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Seattle to Jacksonville flight route.

  • Which airline alliances offer flights from Seattle to Jacksonville?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Seattle and Jacksonville, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Jacksonville from Seattle?

    Charlotte is the most popular layover city among KAYAK users traveling from Seattle to Jacksonville.

  • Which is the best airline for flights from Seattle to Jacksonville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to Jacksonville are Southwest and Delta. With an average price for the route of $490 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $510 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Seattle to Jacksonville?

    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 Seattle to Jacksonville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Jacksonville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jacksonville from Seattle 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 Seattle to Jacksonville?

    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 Jacksonville with an airline and back to Seattle with another airline. Booking your flights between Seattle and JAX 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 Seattle to Jacksonville?

    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 Jacksonville from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Jacksonville

  • In order to accommodate nursing moms, Seattle-Tacoma International Airport (SEA) offers a variety of services, including nursing suites, nursing rooms, and nursing pods. Each area has a lockable door, a flat surface, a place to sit, and an electrical outlet.
  • To keep kids entertained before their flight to Jacksonville International Airport (JAX), Seattle-Tacoma International Airport provides a playground just across from Gate A1. For optimal hygiene for the children, hand sanitizer and disinfecting wipes are provided in the play area.
  • When flying from Seattle-Tacoma International Airport to Jacksonville International Airport, arrive at the airport at least 2 hours before the flight’s scheduled time of departure as this will give you sufficient time to check in and go through the necessary security checks.
  • In the event that you lose any of your items upon arrival at Jacksonville International Airport in the terminal or airport grounds, head over to the lost and found department where you can fill a lost item claim.
  • Visit the airport lounges when you arrive at Jacksonville International Airport (JAX) to take advantage of a range of amenities like food, beverages, and free Wi-Fi. The lounges are situated outside security at the Main Terminal and inside security at Concourse A.

Reviews of the top 4 airlines serving from Seattle to Jacksonville

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Jacksonville. 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 Seattle to Jacksonville? 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
SouthwestOverall score based on 4220 reviews
7.5Entertainment
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

6.0 GoodGordon, Jul 2026
Read more Southwest reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

The people of SW Airlines really make it nice to fly.

More assistance and clarity for travelers with gate checking and lap children

Was revoked with Jet Blue due to delay from Kenya Air

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

The experience was good and the flight departed on time and landed early

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

No Wi-Fi the entire trip Despite booking a flight that said it had Wi-Fi

After the long flight from Paris and a 4-hour layover I was more than ready to complete the last leg of my journey. We waited a few extra long minutes to ensure everyone’s bags were onboard which I didn’t mind but….😉. Would definitely choose Delta again.

The experience with United Airlines was excellent; however, the experience with Houston Intercontinental Airport (IAH) was horrible. Although our flight departed from Terminal B, we had to go through security in Terminal C and then get on a train for travel to Terminal B. Additionally, there was significant walking required to get to the boarding location.

Flight be on time would be a good start. Then train your flight attendants to be attentive and friendly. This time they completely forgot my row for the measly snack! United, do better!

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

Flight attendants and crew were great! This plane was fine. It was clean and everything worked properly. Now, the gate change was not communicated. No text or information. It wasn't far with the gate change but it still changed without any communication. Not sure if this is on American or Kayakl. Also, internet was the worst. I would never have ATT. 3+hr flight and weak internet. I think I watched the commercials to get on at least 6 times. Terrible internet!

Plane from partner PSA was filthy. Plastic needs to be thoroughly cleaned. Really disgusting to look at and wonder about cleanliness of parts less visible.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

We didn't take off until an hour after we boarded.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Everything was great except it became so hot on the plane I couldn’t sleep on my red eye flight. It didn’t really cool down till we started descending.

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

WiFi wasn’t working on the flight, several delays and gate changes, ended up taking off 3 hrs later

The gate agent Sasir was rude and disrespect as we boarded

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

Information on your arrival and departure airports