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$131+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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Cheap 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 November 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$199
(Alaska Airlines)

One-way from

$131
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$576
Provider with most accurate pricing for Key West-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Key West-Seattle/Tacoma Intl flights.
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From Florida Keys to Seattle/Tacoma Intl
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One-way flight from Florida Keys to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 19% potential increase in price ($124 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:25 amMIA - SEA
Nonstop6h 57mAlaska Airlines
Tue 12/309:20 pmSEA - MIA
Nonstop5h 45mAlaska Airlines
Deal found 11/12$199
This Frontier deal was found by Cheapflights users on 11/10. 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 12/116:00 amMIA - SEA
1 stop8h 53mFrontier
Mon 12/159:45 amSEA - MIA
1 stop10h 33mFrontier
Deal found 11/10$206
This Delta deal was found by Cheapflights users on 11/10. 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 12/46:00 pmMIA - SEA
Nonstop6h 58mDelta
Mon 12/82:03 pmSEA - MIA
1 stop7h 43mDelta
Deal found 11/10$209
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 11/226:55 amMIA - SEA
1 stop28h 42mFrontier
Tue 11/2512:46 pmSEA - MIA
2 stops31h 22mFrontier
Deal found 11/11$210
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/35:58 pmMIA - SEA
2 stops41h 48mFrontier
Mon 12/83:40 pmSEA - MIA
1 stop10h 39mFrontier
Deal found 11/11$213
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/257:25 amMIA - SEA
Nonstop6h 57mHawaiian Airlines
Mon 1/55:20 amSEA - MIA
1 stop7h 31mHawaiian Airlines
Deal found 11/11$214
This SmartFares deal was found by Cheapflights users on 11/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:25 amMIA - SEA
Nonstop6h 57mHawaiian Airlines
Mon 1/58:16 amSEA - MIA
Nonstop5h 55mHawaiian Airlines
Deal found 11/11$215
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/410:19 amMIA - SEA
1 stop25h 27mMultiple Airlines
Sun 12/710:51 amSEA - MIA
2 stops18h 32mMultiple Airlines
Deal found 11/11$216
This Delta deal was found by Cheapflights users on 11/10. 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 12/46:39 pmMIA - SEA
1 stop8h 46mDelta
Wed 12/106:00 amSEA - MIA
1 stop9h 26mDelta
Deal found 11/10$219
This Priceline deal was found by Cheapflights users on 11/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amMIA - SEA
1 stop8h 53mFrontier
Mon 12/153:40 pmSEA - MIA
1 stop10h 39mFrontier
Deal found 11/11$222
This American Airlines deal was found by Cheapflights users on 11/11. 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.
Thu 12/47:35 pmMIA - SEA
Nonstop6h 41mAmerican Airlines
Sun 12/710:08 pmSEA - MIA
Nonstop5h 37mAmerican Airlines
Deal found 11/11$223
This American Airlines deal was found by Cheapflights users on 11/10. 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 11/252:50 pmEYW - SEA
1 stop9h 09mAmerican Airlines
Mon 12/15:24 amSEA - EYW
1 stop8h 05mAmerican Airlines
Deal found 11/10$374

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 November 12, 2025.
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

Thu 12/4

4:55 pm-11:59 pm

1 stop10h 04m

Seattle/Tacoma Intl

Thu 12/11

7:55 am-4:50 pm

Nonstop5h 55m

$209

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 12/12

7:39 am-2:44 pm

1 stop10h 05m

Seattle/Tacoma Intl

Mon 12/15

7:55 am-4:50 pm

Nonstop5h 55m

$209

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 12/11

6:05 pm-10:03 pm

Nonstop6h 58m

Seattle/Tacoma Intl

Sat 12/13

9:59 pm-10:33 am

1 stop9h 34m

$209

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 12/9

5:00 pm-11:58 pm

1 stop9h 58m

Seattle/Tacoma Intl

Mon 12/15

7:55 am-4:50 pm

Nonstop5h 55m

$209

MiamiSeattle

MIA - SEA

MIASEA

Miami

Mon 12/8

6:05 pm-10:03 pm

Nonstop6h 58m

Seattle/Tacoma Intl

Tue 12/16

7:55 am-4:50 pm

Nonstop5h 55m

$219

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 12/9

5:00 pm-11:58 pm

1 stop9h 58m

Seattle/Tacoma Intl

Tue 12/16

6:00 am-5:34 pm

1 stop8h 34m

$219

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 12/4

6:39 pm-12:25 am

1 stop8h 46m

Seattle/Tacoma Intl

Wed 12/10

6:00 am-6:26 pm

1 stop9h 26m

$219

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 1/9

6:00 am-2:18 pm

1 stop11h 18m

Seattle/Tacoma Intl

Tue 1/20

6:05 am-5:48 pm

1 stop8h 43m

$219

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 1/9

3:24 pm-10:50 pm

1 stop10h 26m

Seattle/Tacoma Intl

Thu 1/15

7:45 am-4:37 pm

Nonstop5h 52m

$229

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 4/29

2:35 pm-10:05 pm

1 stop10h 30m

Seattle/Tacoma Intl

Sun 5/3

9:20 pm-10:58 am

1 stop10h 38m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 26 results
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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 November 12, 2025.
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.
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,275 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,807 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Frontier
5.8
Fair
3,113 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

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 $374, Delta can have you in Seattle from Florida Keys in 9h 09m. There are 2715 mi between Florida Keys and Seattle. This flight may include one or multiple stops.

  • 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
SeaTac
Tacoma
Tukwila
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Cle Elum
Marysville
Puyallup
Federal Way
Fife
Issaquah
Aberdeen

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Alternative routes for Florida Keys to Seattle

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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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$520FlexibilityNo cancel feeOn-time71%

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