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Florida Keys

$139+ Cheap flights from Seattle (SEA) to Florida Keys

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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EYW
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Seattle to Florida Keys

Keep the following information in mind while searching for Seattle to Florida Keys flight deals. Data was last updated September 17, 2025.

Round-trip from

$198
(Priceline)

One-way from

$139
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$300
From Seattle/Tacoma Intl to Florida Keys
Search Deals
One-way flight from Seattle/Tacoma Intl to Florida Keys
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Highest demand for flights based on searches. 9% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Florida Keys

Cheapest flights from Seattle to Florida Keys
Explore the most affordable flight options available from Seattle to Florida Keys. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:16 amSEA - MIA
1 stop11h 34mFrontier
Fri 10/316:00 amMIA - SEA
1 stop9h 13mFrontier
Deal found 9/15$198
This Frontier deal was found by Cheapflights users on 9/15. 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.
Thu 10/301:18 pmSEA - MIA
2 stops17h 53mFrontier
Thu 11/66:00 amMIA - SEA
1 stop9h 13mFrontier
Deal found 9/15$205
This Booking.com deal was found by Cheapflights users on 9/17. 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.
Sat 11/112:58 pmSEA - MIA
1 stop14h 21mFrontier
Sat 11/86:00 amMIA - SEA
1 stop9h 13mFrontier
Deal found 9/17$212
This Delta deal was found by Cheapflights users on 9/16. 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 11/126:00 amSEA - MIA
1 stop9h 08mDelta
Fri 11/146:00 pmMIA - SEA
Nonstop6h 53mDelta
Deal found 9/16$213
This Booking.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/161:02 pmSEA - MIA
1 stop14h 17mFrontier
Mon 10/206:00 amMIA - SEA
1 stop9h 07mFrontier
Deal found 9/14$214
This Delta deal was found by Cheapflights users on 9/16. 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 10/145:00 pmSEA - MIA
1 stop10h 21mDelta
Tue 10/216:15 pmMIA - SEA
1 stop8h 39mDelta
Deal found 9/16$217
This Frontier deal was found by Cheapflights users on 9/14. 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.
Mon 10/1310:16 amSEA - MIA
1 stop11h 34mFrontier
Sat 10/256:00 amMIA - SEA
1 stop9h 07mFrontier
Deal found 9/14$218
This Frontier deal was found by Cheapflights users on 9/15. 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 10/2912:58 pmSEA - MIA
1 stop14h 21mFrontier
Sun 11/25:00 amMIA - SEA
1 stop9h 13mFrontier
Deal found 9/15$219
This Frontier deal was found by Cheapflights users on 9/14. 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 10/158:43 pmSEA - MIA
2 stops17h 50mFrontier
Fri 10/246:00 amMIA - SEA
1 stop9h 07mFrontier
Deal found 9/14$220
This Frontier deal was found by Cheapflights users on 9/16. 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 10/2912:58 pmSEA - MIA
1 stop14h 21mFrontier
Mon 11/36:00 amMIA - SEA
1 stop10h 03mFrontier
Deal found 9/16$222
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 11/137:12 pmSEA - MIA
1 stop8h 13mDelta
Fri 11/143:40 pmMIA - SEA
1 stop11h 19mDelta
Deal found 9/16$223
This American Airlines deal was found by Cheapflights users on 9/16. 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 11/111:56 pmSEA - EYW
1 stop10h 03mAmerican Airlines
Sat 11/84:59 pmEYW - SEA
1 stop9h 43mAmerican Airlines
Deal found 9/16$389

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Florida Keys 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 September 17, 2025.
Use the filters below to find and compare flights from Seattle to Florida Keys that are best for you.

Fly from

Seattle

Fly to

Florida Keys

Route

Depart

Return

Price

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Fri 10/17

9:59 pm-10:43 am

1 stop9h 44m

Miami

Tue 10/21

7:36 am-2:44 pm

1 stop10h 08m

$217

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 1/21

7:55 am-4:55 pm

Nonstop6h 00m

Miami

Wed 1/28

5:55 pm-9:25 pm

Nonstop6h 30m

$237

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 10/8

8:00 am-4:54 pm

Nonstop5h 54m

Miami

Mon 10/13

6:05 pm-9:47 pm

Nonstop6h 42m

$237

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 1/19

5:30 am-3:42 pm

1 stop7h 12m

Miami

Tue 1/27

4:45 pm-10:24 pm

1 stop8h 39m

$256

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 11/24

8:45 am-5:30 pm

Nonstop5h 45m

Miami

Sat 11/29

7:17 am-11:15 am

Nonstop6h 58m

$257

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 1/29

8:00 am-5:05 pm

Nonstop6h 05m

Miami

Wed 2/4

6:05 pm-10:12 pm

Nonstop7h 07m

$257

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 1/19

7:55 am-4:55 pm

Nonstop6h 00m

Miami

Wed 1/28

4:45 pm-10:24 pm

1 stop8h 39m

$267

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 11/15

5:00 am-3:45 pm

1 stop7h 45m

Miami

Wed 11/19

1:45 pm-10:55 pm

1 stop12h 10m

$272

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 1/22

5:30 am-3:42 pm

1 stop7h 12m

Miami

Wed 1/28

4:45 pm-10:24 pm

1 stop8h 39m

$276

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 2/5

8:00 am-5:05 pm

Nonstop6h 05m

Miami

Mon 2/9

6:05 pm-10:12 pm

Nonstop7h 07m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 29 results
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Best time to book a flight from Seattle to Florida Keys

Have a flexible travel schedule? Discover the best time to fly to Florida Keys 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 Florida Keys

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $328). Flying from Seattle to Florida Keys in March is currently the most expensive (average of $491). 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 EOA?

Find hourly flight availability from Seattle to Florida Keys. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Florida Keys as you normally would.

Reviews of airlines servicing Florida Keys

Get insights into the airlines that provide service to Florida Keys. 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 Florida Keys. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Seattle to Florida Keys, such as Alaska Airlines, Delta, and Hawaiian 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,729 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Frontier
5.8
Fair
3,173 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Florida Keys. 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 Florida Keys?

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

  • How long is the flight from Seattle to Florida Keys?

    A quick flight from Seattle to Florida Keys can take about 6h. Delta provides one of the quickest options available for as low as $237. The distance from Seattle to Florida Keys is about 2719 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from Southwest and Alaska Airlines, as they are both options that can get you from Seattle to Florida Keys for a low price.

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

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

  • How can I find direct flights from Seattle to Florida Keys?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Florida Keys 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 Florida Keys?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $328). Flying from Seattle to Florida Keys in March is currently the most expensive (average of $491). 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.

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Alternative routes for Seattle to Florida Keys

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Top 3 airlines flying from Seattle to Florida Keys

Discover the top 3 airlines that operate flights from Seattle to Florida Keys. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$587FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$590FlexibilityNo cancel feeOn-time71%
DeltaCheapest$338Average$717FlexibilityNo cancel feeOn-timeN/A

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