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Cheap flights from Seattle to Florida Keys from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Florida Keys departing on 8/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Florida Keys

Cheap round-trip flights

American Airlines Logo
8:08 pm - 5:00 amSEA-MIA
5h 52mnonstop
American Airlines Logo
8:38 pm - 11:59 pmMIA-SEA
6h 21mnonstop
$225American Airlines
Find Deal
Sat, Aug 30 - Fri, Sep 5
American Airlines Logo
8:08 pm - 5:00 amSEA-MIA
5h 52mnonstop
American Airlines Logo
8:38 pm - 11:59 pmMIA-SEA
6h 21mnonstop
$226American Airlines
Find Deal
Sat, Aug 30 - Fri, Sep 5
Hawaiian Airlines Logo
8:25 am - 5:31 pmSEA-MIA
6h 06mnonstop
Hawaiian Airlines Logo
6:45 pm - 10:26 pmMIA-SEA
6h 41mnonstop
$233Hawaiian Airlines
Find Deal
Mon, Aug 25 - Tue, Sep 2
Alaska Airlines Logo
8:25 am - 5:31 pmSEA-MIA
6h 06mnonstop
Alaska Airlines Logo
6:45 pm - 10:26 pmMIA-SEA
6h 41mnonstop
$234Alaska Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
Delta Logo
8:35 am - 5:31 pmSEA-MIA
5h 56mnonstop
Delta Logo
6:45 pm - 10:23 pmMIA-SEA
6h 38mnonstop
$236Delta
Find Deal
Sun, Aug 24 - Tue, Sep 2
Delta Logo
8:00 am - 4:54 pmSEA-MIA
5h 54mnonstop
Delta Logo
6:05 pm - 10:00 pmMIA-SEA
6h 55mnonstop
$237Delta
Find Deal
Wed, Nov 5 - Wed, Nov 12
Hawaiian Airlines Logo
8:25 am - 5:45 pmSEA-MIA
6h 20mnonstop
Hawaiian Airlines Logo
6:45 pm - 10:26 pmMIA-SEA
6h 41mnonstop
$243Hawaiian Airlines
Find Deal
Fri, Sep 19 - Tue, Sep 30
Alaska Airlines Logo
8:25 am - 5:45 pmSEA-MIA
6h 20mnonstop
Alaska Airlines Logo
6:45 pm - 10:26 pmMIA-SEA
6h 41mnonstop
$255Alaska Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 21
Frontier Logo
7:48 pm - 6:30 amSEA-MIA
7h 42m1 stop
Frontier Logo
6:15 am - 11:45 amMIA-SEA
8h 30m1 stop
$275Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Frontier Logo
7:48 pm - 6:30 amSEA-MIA
7h 42m1 stop
Frontier Logo
6:15 am - 11:45 amMIA-SEA
8h 30m1 stop
$278Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23

Southwest flights from Seattle to Florida Keys

Our best Southwest deals on Seattle to Florida Keys flight tickets
Southwest
Aug 30
SEA11:10 pmSeattle/Tacoma Intl
14h 25m
1 stop
MIA4:35 pmMiami
Sep 5
MIA4:10 pmMiami
10h 25m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
$272
Find similar
Southwest
Aug 30
SEA11:10 pmSeattle/Tacoma Intl
14h 25m
1 stop
MIA4:35 pmMiami
Sep 6
MIA5:35 pmMiami
8h 55m
1 stop
SEA11:30 pmSeattle/Tacoma Intl
$282
Find similar
Southwest
Sep 15
SEA8:25 amSeattle/Tacoma Intl
11h 40m
2 stops
MIA11:05 pmMiami
Sep 19
MIA4:10 pmMiami
10h 25m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
$302
Find similar

American Airlines flights from Seattle to Florida Keys

Our best American Airlines deals on Seattle to Florida Keys flight tickets
American Airlines
Aug 30
SEA8:08 pmSeattle/Tacoma Intl
5h 52m
MIA5:00 amMiami
Sep 5
MIA8:38 pmMiami
6h 21m
SEA11:59 pmSeattle/Tacoma Intl
$225
Find similar
American Airlines
Aug 30
SEA8:08 pmSeattle/Tacoma Intl
5h 52m
MIA5:00 amMiami
Sep 5
MIA8:38 pmMiami
6h 21m
SEA11:59 pmSeattle/Tacoma Intl
$226
Find similar
American Airlines
Aug 30
SEA8:08 pmSeattle/Tacoma Intl
5h 52m
MIA5:00 amMiami
Sep 12
MIA8:38 pmMiami
6h 21m
SEA11:59 pmSeattle/Tacoma Intl
$227
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 2, 2025.
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

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 8/30

8:08 pm-5:00 am

Nonstop5h 52m

Miami

Fri 9/5

8:38 pm-11:59 pm

Nonstop6h 21m

$225

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 8/30

8:08 pm-5:00 am

Nonstop5h 52m

Miami

Fri 9/5

8:38 pm-11:59 pm

Nonstop6h 21m

$226

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Mon 8/25

8:25 am-5:31 pm

Nonstop6h 06m

Miami

Tue 9/2

6:45 pm-10:26 pm

Nonstop6h 41m

$233

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 8/27

8:25 am-5:31 pm

Nonstop6h 06m

Miami

Wed 9/3

6:45 pm-10:26 pm

Nonstop6h 41m

$234

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sun 8/24

8:35 am-5:31 pm

Nonstop5h 56m

Miami

Tue 9/2

6:45 pm-10:23 pm

Nonstop6h 38m

$236

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Wed 11/5

8:00 am-4:54 pm

Nonstop5h 54m

Miami

Wed 11/12

6:05 pm-10:00 pm

Nonstop6h 55m

$237

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Fri 9/19

8:25 am-5:45 pm

Nonstop6h 20m

Miami

Tue 9/30

6:45 pm-10:26 pm

Nonstop6h 41m

$243

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sun 9/14

8:25 am-5:45 pm

Nonstop6h 20m

Miami

Sun 9/21

6:45 pm-10:26 pm

Nonstop6h 41m

$255

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 8/16

7:48 pm-6:30 am

1 stop7h 42m

Miami

Sat 8/23

6:15 am-11:45 am

1 stop8h 30m

$275

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

Sat 8/16

7:48 pm-6:30 am

1 stop7h 42m

Miami

Sat 8/23

6:15 am-11:45 am

1 stop8h 30m

$278

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Florida Keys from

How to get the cheapest flight ticket from Seattle to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Florida Keys?

The month of January is another great option to travel to Florida Keys, with average flight prices from Seattle averaging around $327.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from Seattle to Florida Keys is on a Tuesday when prices can be found for as low as $563. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $647.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the afternoon. momondo users have found flights departing from Seattle to Florida Keys in the afternoon for as low as $263. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,080.

How far in advance should I book a flight to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $386 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Seattle for as low as $316 on momondo.

Can stopping save me money on Seattle to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Seattle to Florida Keys.

Cheap Seattle to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Florida Keys

Best Price Found

$109

Fastest flight time

5h 41m

Direct flights

Every day

Airports in Florida Keys

2 airports
The best one-way flight to Florida Keys from Seattle in the past 72 hours is $109. The best round-trip flight deal from Seattle to Florida Keys found on momondo in the last 72 hours is $225.
The fastest flight from Seattle to Florida Keys takes 5h 41m
Direct flights go from Seattle to Florida Keys every day.
There are 2 airports near Florida Keys: Key West (EYW), Miami (MIA)
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Florida Keys?

    Prices for flights from Seattle/Tacoma Intl Airport to Florida Keys were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Florida Keys?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Florida Keys?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Florida Keys.

  • What documentation or ID do you need to fly to Florida Keys?

    The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Florida Keys?

Best airlines flying from Seattle to Florida Keys

Compare and see reviews for airlines that fly from Seattle to Florida Keys with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $308Free CancellationRating
7.4
8,904 reviews
Search United Airlines flights
American AirlinesPriceFrom $368Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $373Free CancellationRating
8.0
7,983 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Florida Keys?

Finding the right flight to Florida Keys from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Florida Keys quick and easy, saving you time and money.

Can I find flights from Seattle to Florida Keys with flexible booking policies on momondo?

All flight searches from Seattle to Florida Keys on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Florida Keys?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Florida Keys.

I’m not ready to book a flight from Seattle to Florida Keys right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Florida Keys flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Florida Keys trip

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Find better results for your trip to Florida Keys

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