Seattle

$138+ Cheap flights from Florida Keys to Seattle (SEA)

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Mar 18 — Mar 251
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Florida Keys to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Florida Keys to Seattle

Cheapest flights from Florida Keys to Seattle
Explore the most affordable flight options available from Florida Keys to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 16, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Thu 4/165:50 am
MIA
-
SEA
1 stop12h 15m
Frontier
Sun 4/199:35 pm
SEA
-
MIA
1 stop30h 57m
Frontier
Deal found 2/13$194
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:26 pm
MIA
-
SEA
2 stops24h 01m
Frontier
Fri 5/84:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/14$196
This Delta deal was found by Cheapflights users on 2/13. 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 3/115:56 pm
MIA
-
SEA
Nonstop6h 52m
Delta
Tue 3/178:00 am
SEA
-
MIA
Nonstop5h 46m
Delta
Deal found 2/13$197
This eDestinos deal was found by Cheapflights users on 2/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
-
SEA
1 stop29h 57m
Frontier
Mon 5/184:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/14$198
This Frontier deal was found by Cheapflights users on 2/15. 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 4/308:42 am
MIA
-
SEA
1 stop14h 38m
Frontier
Sun 5/34:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/15$200
This Frontier deal was found by Cheapflights users on 2/12. 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 4/165:50 am
MIA
-
SEA
1 stop12h 15m
Frontier
Mon 4/274:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/12$201
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:30 am
MIA
-
SEA
1 stop29h 57m
Frontier
Tue 5/1910:42 am
SEA
-
MIA
2 stops15h 23m
Frontier
Deal found 2/14$205
This Delta deal was found by Cheapflights users on 2/13. 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 4/165:25 pm
MIA
-
SEA
Nonstop6h 40m
Delta
Sun 4/194:36 pm
SEA
-
MIA
1 stop9h 51m
Delta
Deal found 2/13$207
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 4/2112:26 pm
MIA
-
SEA
2 stops24h 01m
Frontier
Mon 4/274:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/12$208
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:26 pm
MIA
-
SEA
2 stops24h 01m
Frontier
Mon 5/44:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/15$209
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Thu 5/78:42 am
MIA
-
SEA
1 stop14h 38m
Frontier
Sat 5/166:57 pm
SEA
-
MIA
2 stops22h 14m
Frontier
Deal found 2/13$210
This CheapOair deal was found by Cheapflights users on 2/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:50 am
MIA
-
SEA
1 stop28h 37m
Frontier
Mon 5/184:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 2/15$211

Find flight deals from Florida Keys to Seattle

Keep the following information in mind while searching for Florida Keys to Seattle flight deals. Data was last updated February 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$194
(Kiwi.com)

One-way from

$138
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$329
Provider with most accurate pricing for Key West-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Key West-Seattle/Tacoma Intl flights.
From Florida Keys to Seattle/Tacoma Intl
One-way flight from Florida Keys to Seattle/Tacoma Intl
Highest demand for flights based on searches. 15% potential increase in price ($96 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Florida Keys to Seattle 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 February 16, 2026.
Use the filters below to find and compare flights from Florida Keys to Seattle that are best for you.

Fly from

Florida Keys

Fly to

Seattle

Route

Depart

Return

Price

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 3/24

5:56 pm-9:48 pm

Nonstop6h 52m

Seattle/Tacoma Intl

Tue 4/7

8:00 am-4:46 pm

Nonstop5h 46m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/16

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Mon 4/27

7:15 am-4:11 pm

Nonstop5h 56m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/16

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Sun 4/19

7:15 am-4:11 pm

Nonstop5h 56m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 4/3

5:56 pm-9:48 pm

Nonstop6h 52m

Seattle/Tacoma Intl

Wed 4/8

8:00 am-4:46 pm

Nonstop5h 46m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 4/3

5:56 pm-9:48 pm

Nonstop6h 52m

Seattle/Tacoma Intl

Mon 4/13

7:15 am-4:11 pm

Nonstop5h 56m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/30

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Sun 5/3

7:15 am-4:11 pm

Nonstop5h 56m

$197

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/9

5:56 pm-9:48 pm

Nonstop6h 52m

Seattle/Tacoma Intl

Wed 4/15

6:00 am-6:06 pm

1 stop9h 06m

$207

MiamiSeattle

MIA - SEA

MIASEA

Miami

Sat 5/9

8:00 am-4:48 pm

1 stop11h 48m

Seattle/Tacoma Intl

Mon 5/18

8:00 am-5:04 pm

Nonstop6h 04m

$207

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/16

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Thu 4/23

4:36 pm-5:27 am

1 stop9h 51m

$207

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 3/24

6:55 am-2:54 pm

1 stop10h 59m

Seattle/Tacoma Intl

Tue 3/31

8:00 am-4:46 pm

Nonstop5h 46m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 30 results
1
2
3

Best time to book a flight from Florida Keys to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Florida Keys 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 Florida Keys to Seattle
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 16, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Florida Keys to Seattle by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

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

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

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

    For as low as $197, Delta can have you in Seattle from Florida Keys in 6h 52m. There are 2719 mi between Florida Keys and Seattle. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $93 on Frontier. Other airlines that offer cheap prices include United Airlines from $118 and Hawaiian Airlines from $118 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Florida Keys to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Lacey
Kent
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Florida Keys to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Florida Keys to Seattle

Discover the top airline that operate flights from Florida Keys to Seattle. 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 February 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$489FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.