Seattle

$105+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
May 2 — May 91
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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 April 2, 2026.

This Frontier deal was found by Cheapflights users on 4/1. 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 4/237:00 am
MIA
-
SEA
1 stop11h 05m
Frontier
Mon 4/274:20 pm
SEA
-
MIA
1 stop9h 45m
Frontier
Deal found 4/1$205
This Expedia deal was found by Cheapflights users on 3/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
MIA
-
SEA
1 stop11h 05m
Frontier
Mon 5/49:19 pm
SEA
-
MIA
1 stop30h 41m
Frontier
Deal found 3/28$211
This Booking.com deal was found by Cheapflights users on 3/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:41 pm
MIA
-
SEA
1 stop15h 41m
Frontier
Tue 5/197:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Deal found 3/29$212
This CheapOair deal was found by Cheapflights users on 4/1. 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.
Thu 4/237:00 am
MIA
-
SEA
1 stop29h 52m
Frontier
Sun 4/269:54 pm
SEA
-
MIA
1 stop30h 28m
Frontier
Deal found 4/1$216
This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
MIA
-
SEA
1 stop11h 05m
Frontier
Fri 5/87:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Deal found 3/30$217
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
MIA
-
SEA
1 stop29h 52m
Frontier
Thu 5/77:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Deal found 3/31$219
This CheapOair deal was found by Cheapflights users on 3/31. 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.
Fri 5/17:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Fri 5/87:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Deal found 3/31$221
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Sun 4/199:54 pm
SEA
-
MIA
1 stop30h 28m
Frontier
Deal found 3/30$222
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/167:00 am
MIA
-
SEA
1 stop11h 05m
Multiple Airlines
Wed 4/2210:57 am
SEA
-
MIA
2 stops22h 01m
Multiple Airlines
Deal found 3/31$223
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sun 5/37:00 am
MIA
-
SEA
1 stop29h 27m
Frontier
Tue 5/127:50 pm
SEA
-
MIA
1 stop30h 48m
Frontier
Deal found 3/31$224
This Delta deal was found by Cheapflights users on 3/30. 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 4/246:23 pm
EYW
-
SEA
1 stop8h 30m
Delta
Sun 5/39:45 pm
SEA
-
EYW
1 stop10h 01m
Delta
Deal found 3/30$389
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/244:20 pm
EYW
-
SEA
2 stops11h 24m
American Airlines
Sun 5/36:00 am
SEA
-
EYW
1 stop8h 02m
American Airlines
Deal found 3/30$394

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 April 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$205
(Frontier)

One-way from

$105
(Frontier)

Popular in

March

Cheapest in

February

Average price

$572
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. 3% potential increase in price ($21 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($37 potential savings vs. average RT price).
Average for round-trip flights in April 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 April 2, 2026.
Use the filters below to find and compare flights from Florida Keys to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 5/28

5:24 pm-11:59 pm

1 stop9h 35m

Seattle/Tacoma Intl

Mon 6/1

10:40 pm-11:24 am

1 stop9h 44m

$251

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 5/1

6:05 pm-12:05 am

1 stop9h 00m

Seattle/Tacoma Intl

Mon 5/4

11:55 pm-2:15 pm

2 stops11h 20m

$256

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 5/1

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Mon 5/4

11:15 pm-12:11 pm

1 stop9h 56m

$297
Quickest round-trip

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 4/23

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Mon 4/27

7:15 am-4:11 pm

Nonstop5h 56m

$317

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 5/8

6:05 pm-12:05 am

1 stop9h 00m

Seattle/Tacoma Intl

Mon 5/11

11:55 pm-2:15 pm

2 stops11h 20m

$342

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

4:38 pm-11:12 pm

1 stop9h 34m

Seattle/Tacoma Intl

Sun 5/3

11:00 pm-1:45 pm

1 stop11h 45m

$389

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

6:23 pm-11:53 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sun 5/3

9:45 pm-10:46 am

1 stop10h 01m

$389

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

4:20 pm-12:44 am

2 stops11h 24m

Seattle/Tacoma Intl

Sat 5/2

12:59 am-4:30 pm

2 stops12h 31m

$399

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 9/22

6:45 am-12:15 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sun 9/27

11:00 pm-11:50 am

1 stop9h 50m

$404

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 4/28

5:25 pm-9:05 pm

Nonstop6h 40m

Seattle/Tacoma Intl

Thu 4/30

7:15 am-4:11 pm

Nonstop5h 56m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 36 resultsSorted by cheapest first
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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 April 2, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian 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.

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Overall

7.9

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 $297, United Airlines can have you in Seattle from Florida Keys in 6h 40m. 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 $100 on Frontier. Other airlines that offer cheap prices include Southwest from $109 and United 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
SeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Aberdeen

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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$471FlexibilityNo cancel feeOn-time71%

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