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Florida Keys

$120+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EYW
Jan 31 — Feb 71
Sat 1/31
Sat 2/7
1 adult, Economy
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Cheap 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 January 1, 2026.

This American Airlines deal was found by Cheapflights users on 12/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:07 pmSEA - EYW
1 stop11h 43mAmerican Airlines
Tue 1/64:37 pmEYW - SEA
1 stop10h 05mAmerican Airlines
Deal found 12/30$497
This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Wed 12/312:46 pmSEA - MIA
1 stop11h 49mFrontier
Sun 1/47:05 amMIA - SEA
1 stop30h 06mFrontier
Deal found 12/30$740
This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Tue 12/306:33 pmSEA - MIA
1 stop32h 02mFrontier
Sun 1/47:05 amMIA - SEA
1 stop30h 06mFrontier
Deal found 12/30$785
This Frontier deal was found by Cheapflights users on 12/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:25 pmSEA - MIA
1 stop12h 35mFrontier
Sat 1/36:05 amMIA - SEA
1 stop9h 31mFrontier
Deal found 12/31$841
This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Wed 12/312:46 pmSEA - MIA
1 stop11h 49mFrontier
Fri 1/27:05 amMIA - SEA
1 stop31h 26mFrontier
Deal found 12/30$847
This American Airlines deal was found by Cheapflights users on 12/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:13 pmSEA - EYW
1 stop10h 55mAmerican Airlines
Sat 1/32:52 pmEYW - SEA
1 stop9h 19mAmerican Airlines
Deal found 12/31$852
This American Airlines deal was found by Cheapflights users on 12/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:13 pmSEA - MIA
1 stop9h 56mAmerican Airlines
Thu 1/11:59 pmMIA - SEA
1 stop10h 36mAmerican Airlines
Deal found 12/30$867
This Alaska Airlines deal was found by Cheapflights users on 12/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:20 pmSEA - MIA
Nonstop5h 45mAlaska Airlines
Thu 1/17:25 amMIA - SEA
Nonstop6h 57mAlaska Airlines
Deal found 12/30$911
This Kiwi.com deal was found by Cheapflights users on 12/31. 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.
Wed 12/319:20 pmSEA - MIA
Nonstop5h 45mAlaska Airlines
Sat 1/37:25 amMIA - SEA
Nonstop6h 57mAlaska Airlines
Deal found 12/31$916
This United Airlines deal was found by Cheapflights users on 12/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:55 pmSEA - EYW
2 stops22h 53mUnited Airlines
Tue 1/66:05 pmEYW - SEA
2 stops27h 09mUnited Airlines
Deal found 12/30$918
This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Tue 12/306:33 pmSEA - MIA
1 stop32h 02mFrontier
Sat 1/36:05 amMIA - SEA
1 stop9h 31mFrontier
Deal found 12/30$923
This American Airlines deal was found by Cheapflights users on 12/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:07 pmSEA - EYW
1 stop11h 43mAmerican Airlines
Sun 1/48:09 pmEYW - SEA
1 stop18h 21mAmerican Airlines
Deal found 12/30$1,164

Find 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 January 1, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$182
(Delta)

One-way from

$120
(Delta)

Popular in

December

Cheapest in

September

Average price

$337
Provider with most accurate pricing for Seattle/Tacoma Intl-Miami flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Miami flights.
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From Seattle/Tacoma Intl to Florida Keys
Search Deals
One-way flight from Seattle/Tacoma Intl to Florida Keys
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 1, 2026.
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

Mon 3/23

8:00 am-4:46 pm

Nonstop5h 46m

Miami

Wed 4/1

5:56 pm-9:48 pm

Nonstop6h 52m

$218

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 2/11

7:00 am-3:52 pm

Nonstop5h 52m

Miami

Tue 2/17

6:24 pm-10:15 pm

Nonstop6h 51m

$219

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sun 3/1

8:30 am-5:14 pm

Nonstop5h 44m

Miami

Mon 3/9

5:56 pm-9:48 pm

Nonstop6h 52m

$221

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 2/19

11:05 pm-9:24 am

1 stop7h 19m

Miami

Tue 2/24

7:50 am-2:44 pm

1 stop9h 54m

$228

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 2/23

8:08 am-4:59 pm

Nonstop5h 51m

Miami

Thu 2/26

5:59 pm-10:04 pm

Nonstop7h 05m

$239

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 2/25

8:35 am-5:19 pm

Nonstop5h 44m

Miami

Fri 2/27

6:24 pm-10:15 pm

Nonstop6h 51m

$239

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 1/29

5:40 pm-6:35 am

1 stop9h 55m

Miami

Thu 2/5

11:39 am-8:00 pm

1 stop11h 21m

$239

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Thu 1/22

7:35 am-4:27 pm

Nonstop5h 52m

Miami

Thu 1/29

5:37 pm-9:35 pm

Nonstop6h 58m

$244

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 1/12

11:10 pm-10:26 am

1 stop8h 16m

Miami

Thu 2/5

5:37 pm-9:35 pm

Nonstop6h 58m

$247

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Tue 3/24

8:00 am-4:46 pm

Nonstop5h 46m

Miami

Thu 3/26

5:56 pm-9:48 pm

Nonstop6h 52m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 32 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, January is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $300). Flying from Seattle to Florida Keys in June is currently the most expensive (average of $555). 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.

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 January 1, 2026.
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
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,597 reviews
Alaska Airlines
8.0
Very good
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,017 reviews
Alaska Airlines
8.0
Very good
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,823 reviews
Alaska Airlines
8.0
Very good
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,072 reviews
Alaska Airlines
8.0
Very good
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
3,066 reviews
Alaska Airlines
8.0
Very good
11,597 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 5h 46m. Delta provides one of the quickest options available for as low as $218. 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 Frontier, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from Spirit Airlines 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, January is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $300). Flying from Seattle to Florida Keys in June is currently the most expensive (average of $555). 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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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 January 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$493FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$314Average$579FlexibilityNo cancel feeOn-time71%
DeltaCheapest$338Average$638FlexibilityNo cancel feeOn-timeN/A

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