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Florida Keys

$137+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — EYW
May 2 — May 91
Sat 5/2
Sat 5/9
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 April 2, 2026.

This Expedia deal was found by Cheapflights users on 4/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:11 pm
SEA
-
MIA
1 stop30h 21m
Frontier
Fri 5/17:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 4/1$185
This Expedia deal was found by Cheapflights users on 3/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:54 pm
SEA
-
MIA
1 stop30h 28m
Frontier
Sun 5/37:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/29$186
This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Tue 4/287:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/30$190
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1710:59 pm
SEA
-
MIA
1 stop29h 33m
Frontier
Sat 4/257:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/31$191
This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Wed 6/38:10 pm
MIA
-
SEA
1 stop17h 26m
Frontier
Deal found 3/31$196
This Booking.com deal was found by Cheapflights users on 3/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:54 pm
SEA
-
MIA
1 stop30h 28m
Frontier
Wed 4/297:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/31$198
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:54 pm
SEA
-
MIA
1 stop30h 28m
Frontier
Fri 4/247:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/31$205
This Booking.com deal was found by Cheapflights users on 3/29. 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.
Fri 4/1710:59 pm
SEA
-
MIA
1 stop29h 33m
Frontier
Wed 4/227:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/29$207
This eDestinos deal was found by Cheapflights users on 3/30. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:50 pm
SEA
-
MIA
1 stop30h 43m
Frontier
Wed 6/38:10 pm
MIA
-
SEA
1 stop17h 26m
Frontier
Deal found 3/30$208
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Thu 4/237:00 am
MIA
-
SEA
1 stop11h 05m
Frontier
Deal found 3/30$210
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Sat 4/257:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Deal found 3/31$211
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/2411:59 pm
SEA
-
EYW
1 stop8h 25m
United Airlines
Thu 4/304:47 pm
EYW
-
SEA
1 stop9h 05m
United Airlines
Deal found 4/2$389

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 April 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$185
(Expedia)

One-way from

$137
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$397
Provider with most accurate pricing for Seattle/Tacoma Intl-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Miami flights.
Search Deals
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 ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 2, 2026.
Use the filters below to find and compare flights from Seattle to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 4/27

7:15 am-4:11 pm

Nonstop5h 56m

Miami

Sat 5/2

5:25 pm-9:05 pm

Nonstop6h 40m

$278

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 5/2

6:00 am-6:35 pm

1 stop9h 35m

Miami

Sat 5/9

8:10 am-4:53 pm

1 stop11h 43m

$289

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Tue 4/28

7:55 am-5:04 pm

Nonstop6h 09m

Miami

Wed 4/29

6:04 pm-9:47 pm

Nonstop6h 43m

$356

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 4/25

9:00 am-10:05 pm

2 stops10h 05m

Miami

Fri 5/1

6:05 pm-12:05 am

1 stop9h 00m

$360

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Fri 4/24

11:59 pm-11:24 am

1 stop8h 25m

Key West

Thu 4/30

4:47 pm-10:52 pm

1 stop9h 05m

$389

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Sat 4/25

10:29 pm-10:54 am

2 stops9h 25m

Key West

Wed 4/29

2:29 pm-10:47 pm

1 stop11h 18m

$394

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Fri 4/17

10:35 pm-11:24 am

1 stop9h 49m

Key West

Fri 4/24

4:38 pm-11:12 pm

1 stop9h 34m

$419

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Wed 4/29

6:00 am-5:23 pm

1 stop8h 23m

Key West

Wed 5/6

6:23 pm-12:16 am

1 stop8h 53m

$452

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Tue 6/30

8:05 am-5:11 pm

Nonstop6h 06m

Miami

Wed 7/1

6:21 pm-10:00 pm

Nonstop6h 39m

$454

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Thu 8/20

5:05 am-6:39 pm

2 stops10h 34m

Key West

Tue 8/25

3:00 pm-8:50 pm

1 stop8h 50m

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 32 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $308). Flying from Seattle to Florida Keys in March is currently the most expensive (average of $524). 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 April 2, 2026.
Read through reviews of airlines operating flights from Seattle to Florida Keys, such as Alaska Airlines,Delta, andHawaiian 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
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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
7.9
Good
12,156 reviews
Alaska Airlines
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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
8,373 reviews
Alaska Airlines
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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
2,838 reviews
Alaska Airlines
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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
7.1
Good
11,553 reviews
Alaska Airlines
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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
3,003 reviews
Alaska Airlines
7.9
Good
12,156 reviews

Food

7.0

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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 56m. Delta provides one of the quickest options available for as low as $278. 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 $105. 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, September is the cheapest month in which you can book a flight from Seattle to Florida Keys (average of $308). Flying from Seattle to Florida Keys in March is currently the most expensive (average of $524). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Seattle to Florida Keys

Discover the top 2 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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$334Average$494FlexibilityNo cancel feeOn-time71%
DeltaCheapest$338Average$638FlexibilityNo cancel feeOn-timeN/A

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