Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Florida Keys from $139

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 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Florida Keys

Cheap round-trip flights

Frontier Logo
8:43 pm - 6:19 amSEA-MIA
30h 36m1 stop
Frontier Logo
6:00 am - 12:07 pmMIA-SEA
9h 07m1 stop
$188Frontier
Find Deal
vie., oct. 17 - sáb., oct. 25
Frontier Logo
10:16 am - 12:50 amSEA-MIA
11h 34m1 stop
Frontier Logo
6:00 am - 12:13 pmMIA-SEA
9h 13m1 stop
$198Frontier
Find Deal
lun., oct. 27 - vie., oct. 31
Alaska Airlines Logo
8:30 am - 5:29 pmSEA-MIA
5h 59mnonstop
Alaska Airlines Logo
6:43 pm - 10:30 pmMIA-SEA
6h 47mnonstop
$212Alaska Airlines
Find Deal
dom., oct. 5 - mar., oct. 14
Alaska Airlines Logo
8:30 am - 5:29 pmSEA-MIA
5h 59mnonstop
Alaska Airlines Logo
6:43 pm - 10:30 pmMIA-SEA
6h 47mnonstop
$213Alaska Airlines
Find Deal
mar., oct. 7 - mar., oct. 14
American Airlines Logo
8:49 pm - 5:30 amSEA-MIA
5h 41mnonstop
American Airlines Logo
7:50 pm - 11:35 pmMIA-SEA
6h 45mnonstop
$217American Airlines
Find Deal
mié., oct. 15 - mié., oct. 22
American Airlines Logo
8:49 pm - 5:30 amSEA-MIA
5h 41mnonstop
American Airlines Logo
7:35 pm - 11:26 pmMIA-SEA
6h 51mnonstop
$219American Airlines
Find Deal
mié., oct. 29 - mié., nov. 5
Delta Logo
8:00 am - 4:54 pmSEA-MIA
5h 54mnonstop
Delta Logo
6:05 pm - 9:47 pmMIA-SEA
6h 42mnonstop
$237Delta
Find Deal
mié., oct. 15 - mié., oct. 22
Hawaiian Airlines Logo
7:55 am - 4:55 pmSEA-MIA
6h 00mnonstop
Hawaiian Airlines Logo
4:45 pm - 10:24 pmMIA-SEA
8h 39m1 stop
$247Hawaiian Airlines
Find Deal
mié., ene. 21 - mar., ene. 27
Hawaiian Airlines Logo
8:30 am - 5:29 pmSEA-MIA
5h 59mnonstop
Hawaiian Airlines Logo
6:43 pm - 10:30 pmMIA-SEA
6h 47mnonstop
$257Hawaiian Airlines
Find Deal
sáb., oct. 18 - mar., oct. 21
Delta Logo
6:00 am - 7:44 pmSEA-EYW
10h 44m1 stop
Delta Logo
7:00 am - 2:54 pmEYW-SEA
10h 54m1 stop
$389Delta
Find Deal
mar., ene. 13 - mié., ene. 21

United Airlines flights from Seattle to Florida Keys

Our best United Airlines deals on Seattle to Florida Keys flight tickets
United Airlines
Oct 8
SEA6:35 amSeattle/Tacoma Intl
11h 38m
2 stops
MIA9:13 pmMiami
Oct 15
MIA3:35 pmMiami
8h 59m
1 stop
SEA9:34 pmSeattle/Tacoma Intl
$242
Find similar
United Airlines
Oct 7
SEA7:37 pmSeattle/Tacoma Intl
12h 23m
2 stops
MIA11:00 amMiami
Oct 11
MIA3:50 pmMiami
8h 34m
1 stop
SEA9:24 pmSeattle/Tacoma Intl
$262
Find similar
United Airlines
Sep 27
SEA1:12 pmSeattle/Tacoma Intl
22h 17m
3 stops
EYW2:29 pmKey West
Oct 4
EYW3:11 pmKey West
21h 32m
2 stops
SEA9:43 amSeattle/Tacoma Intl
$930
Find similar

Alaska Airlines flights from Seattle to Florida Keys

Our best Alaska Airlines deals on Seattle to Florida Keys flight tickets
Alaska Airlines
Oct 5
SEA8:30 amSeattle/Tacoma Intl
5h 59m
MIA5:29 pmMiami
Oct 14
MIA6:43 pmMiami
6h 47m
SEA10:30 pmSeattle/Tacoma Intl
$212
Find similar
Alaska Airlines
Oct 7
SEA8:30 amSeattle/Tacoma Intl
5h 59m
MIA5:29 pmMiami
Oct 14
MIA6:43 pmMiami
6h 47m
SEA10:30 pmSeattle/Tacoma Intl
$213
Find similar
Alaska Airlines
Jan 18
SEA5:30 amSeattle/Tacoma Intl
7h 12m
1 stop
MIA3:42 pmMiami
Jan 29
MIA4:45 pmMiami
8h 39m
1 stop
SEA10:24 pmSeattle/Tacoma Intl
$256
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 septiembre 16, 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

vie. 10/17

8:43 pm-6:19 am

1 stop30h 36m

Miami

sáb. 10/25

6:00 am-12:07 pm

1 stop9h 07m

$188

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

lun. 10/27

10:16 am-12:50 am

1 stop11h 34m

Miami

vie. 10/31

6:00 am-12:13 pm

1 stop9h 13m

$198

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

dom. 10/5

8:30 am-5:29 pm

Nonstop5h 59m

Miami

mar. 10/14

6:43 pm-10:30 pm

Nonstop6h 47m

$212

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

mar. 10/7

8:30 am-5:29 pm

Nonstop5h 59m

Miami

mar. 10/14

6:43 pm-10:30 pm

Nonstop6h 47m

$213

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

mié. 10/15

8:49 pm-5:30 am

Nonstop5h 41m

Miami

mié. 10/22

7:50 pm-11:35 pm

Nonstop6h 45m

$217

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

mié. 10/29

8:49 pm-5:30 am

Nonstop5h 41m

Miami

mié. 11/5

7:35 pm-11:26 pm

Nonstop6h 51m

$219

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

mié. 10/15

8:00 am-4:54 pm

Nonstop5h 54m

Miami

mié. 10/22

6:05 pm-9:47 pm

Nonstop6h 42m

$237

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

mié. 1/21

7:55 am-4:55 pm

Nonstop6h 00m

Miami

mar. 1/27

4:45 pm-10:24 pm

1 stop8h 39m

$247

SeattleMiami

SEA - MIA

SEAMIA

Seattle/Tacoma Intl

sáb. 10/18

8:30 am-5:29 pm

Nonstop5h 59m

Miami

mar. 10/21

6:43 pm-10:30 pm

Nonstop6h 47m

$257

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

mar. 1/13

6:00 am-7:44 pm

1 stop10h 44m

Key West

mié. 1/21

7:00 am-2:54 pm

1 stop10h 54m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 August is another great option to travel to Florida Keys, with average flight prices from Seattle averaging around $302.

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 Wednesday when prices can be found for as low as $558. The most expensive day to fly to Florida Keys is Sunday, with ticket prices averaging around $623.

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 $1,117.

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 $378 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 $315 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

Fastest flight time

5h 37m

Direct flights

Every day

Airports in Florida Keys

1 airport
The fastest flight from Seattle to Florida Keys takes 5h 37m
Direct flights go from Seattle to Florida Keys every day.
There is 1 airport near Florida Keys: 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 $278Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $338Free CancellationRating
7.9
7,957 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
jue. 10/16
jue. 10/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $49
Flights to Los Angelesfrom $49
Flights to Miamifrom $49
Flights to Chicagofrom $49
Flights to Orlandofrom $60
Flights to Las Vegasfrom $48
Flights to San Franciscofrom $53
Flights to Washington, D.C.from $49
Flights to Bostonfrom $62
Flights to Atlantafrom $51
Flights to Dallasfrom $68
Flights to Seattlefrom $69