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$139+ 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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$213
(Frontier)

One-way from

$139
(Alaska Airlines)

Popular in

June

Cheapest in

December

Average price

$471
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 September 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 September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/15. 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.
Fri 10/319:24 pmMIA - SEA
2 stops17h 49mFrontier
Sat 11/812:58 pmSEA - MIA
1 stop14h 21mFrontier
Deal found 9/15$213
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:50 pmMIA - SEA
Nonstop6h 45mAmerican Airlines
Wed 10/158:49 pmSEA - MIA
Nonstop5h 41mAmerican Airlines
Deal found 9/15$217
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:50 pmMIA - SEA
Nonstop6h 45mAmerican Airlines
Wed 10/158:49 pmSEA - MIA
Nonstop5h 41mAmerican Airlines
Deal found 9/15$218
This Frontier deal was found by Cheapflights users on 9/15. 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.
Sun 11/96:00 amMIA - SEA
1 stop9h 13mFrontier
Sun 11/162:22 pmSEA - MIA
1 stop12h 57mFrontier
Deal found 9/15$219
This Frontier deal was found by Cheapflights users on 9/15. 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 10/236:43 pmMIA - SEA
2 stops15h 50mFrontier
Thu 11/61:08 pmSEA - MIA
1 stop14h 11mFrontier
Deal found 9/15$220
This Frontier deal was found by Cheapflights users on 9/15. 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.
Mon 11/106:00 amMIA - SEA
1 stop9h 13mFrontier
Fri 11/142:22 pmSEA - MIA
1 stop12h 57mFrontier
Deal found 9/15$222
This CheapOair deal was found by Cheapflights users on 9/16. 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.
Sat 10/46:45 amMIA - SEA
1 stop16h 54mFrontier
Fri 10/102:31 pmSEA - MIA
1 stop12h 48mFrontier
Deal found 9/16$223
This Frontier deal was found by Cheapflights users on 9/15. 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.
Fri 10/316:00 amMIA - SEA
1 stop9h 13mFrontier
Fri 11/72:22 pmSEA - MIA
1 stop12h 57mFrontier
Deal found 9/15$224
This Vliegwinkel deal was found by Cheapflights users on 9/16. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:43 pmMIA - SEA
Nonstop6h 47mHawaiian Airlines
Wed 10/158:30 amSEA - MIA
Nonstop5h 59mHawaiian Airlines
Deal found 9/16$230
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:43 pmMIA - SEA
Nonstop6h 47mAlaska Airlines
Wed 10/228:30 amSEA - MIA
Nonstop5h 59mAlaska Airlines
Deal found 9/17$232
This CheapOair deal was found by Cheapflights users on 9/15. 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.
Mon 10/136:00 amMIA - SEA
1 stop9h 07mFrontier
Fri 10/178:43 pmSEA - MIA
1 stop30h 36mFrontier
Deal found 9/15$234
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 12/56:05 pmEYW - SEA
1 stop8h 54mDelta
Tue 12/97:15 amSEA - EYW
1 stop9h 48mDelta
Deal found 9/16$334

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 September 17, 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

Fri 10/10

6:43 pm-10:30 pm

Nonstop6h 47m

Seattle/Tacoma Intl

Mon 10/13

8:30 am-5:29 pm

Nonstop5h 59m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 10/9

6:05 pm-9:47 pm

Nonstop6h 42m

Seattle/Tacoma Intl

Wed 10/15

8:00 am-4:54 pm

Nonstop5h 54m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 12/24

7:25 am-11:22 am

Nonstop6h 57m

Seattle/Tacoma Intl

Mon 1/5

9:20 pm-6:05 am

Nonstop5h 45m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 10/14

6:45 am-12:51 pm

1 stop9h 06m

Seattle/Tacoma Intl

Tue 10/21

10:54 pm-12:18 pm

1 stop10h 24m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/8

5:55 pm-9:25 pm

Nonstop6h 30m

Seattle/Tacoma Intl

Tue 1/13

7:55 am-4:55 pm

Nonstop6h 00m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 12/24

6:00 pm-9:54 pm

Nonstop6h 54m

Seattle/Tacoma Intl

Tue 1/6

9:20 pm-6:05 am

Nonstop5h 45m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 12/24

5:00 pm-8:50 pm

Nonstop6h 50m

Seattle/Tacoma Intl

Mon 1/5

8:00 am-5:05 pm

Nonstop6h 05m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 10/9

6:43 pm-10:30 pm

Nonstop6h 47m

Seattle/Tacoma Intl

Wed 10/15

8:30 am-5:29 pm

Nonstop5h 59m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 12/4

6:34 pm-10:30 pm

Nonstop6h 56m

Seattle/Tacoma Intl

Wed 12/10

8:45 am-5:34 pm

Nonstop5h 49m

$237

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 12/24

6:00 pm-9:54 pm

Nonstop6h 54m

Seattle/Tacoma Intl

Thu 1/1

8:05 am-5:00 pm

Nonstop5h 55m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 30 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 September 17, 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
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
2,729 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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
3,173 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

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 $237, Hawaiian Airlines can have you in Seattle from Florida Keys in 6h 42m. There are 2719 mi between Florida Keys and Seattle. All flights are typically nonstop.

  • 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 $139 on Delta. Other airlines that offer cheap prices include United Airlines from $139 and Alaska Airlines from $139 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.

  • What is the cheapest month to book a flight from Florida Keys to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Florida Keys to Seattle (average of $238). Flying from Florida Keys to Seattle in June is currently the most expensive (average of $387). 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

Traveling to a place near Seattle?

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

Browse thousands of different options on Cheapflights for your next trip

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$520FlexibilityNo cancel feeOn-time71%

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