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$86 Find cheap flights from Seattle to Florida Keys

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Florida Keys departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 7/12
Fri 7/19

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Best Florida Keys Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Miami
Miami1 stop$173
Key West
Key West2 stops$386

Good to know

Low season

October

High season

December

Cheapest flight

$86
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Seattle to Miami

FAQs - booking Florida Keys flights

  • How does KAYAK find such low prices on flights from Seattle to Florida Keys?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Florida Keys.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Florida Keys?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Florida Keys from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Florida Keys?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Florida Keys with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Florida Keys?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Florida Keys from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Seattle to Florida Keys

Need help choosing which airline to fly with from Seattle to Florida Keys? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9269 reviews
8.6Crew
7.3Entertainment
7.9Comfort
8.2Boarding
7.3Food
Airline reviews

Seats lack shoulder and elbow room. The lady next to me was short and slightly heavy with knee problems, she kept jabbing me with her elbow while playing her game on her phone for 2 hours, the duration of the whole flight. It was frustrating and annoying! I was in the middle seat, there was no space to adjust to avoid her arm jabbing me.

4.0 OkayAnonymous, Jun 2024SEA - ONT
Read more about Alaska Airlines reviews

Seats lack shoulder and elbow room. The lady next to me was short and slightly heavy with knee problems, she kept jabbing me with her elbow while playing her game on her phone for 2 hours, the duration of the whole flight. It was frustrating and annoying! I was in the middle seat, there was no space to adjust to avoid her arm jabbing me.

I was in second from last seat. My luggage was in row 15. I asked the stewardess if I could move up before the plane lands. There were 3 empty rows. She went on to explain to me, how no one was sitting there when the plane took off and there was no education on the exit doors. Blah, blah, blah. I said ok, S he kept over explaining to me. So whatever if that’s the rules. She went in the back to the other 2 stewards to tell them the entire conversation I just had with her. Not only could I hear her so could all the back rows of the plane. This was very unprofessional and inappropriate.

The crew members were wonderful. When we encountered a little turbulence, the pilots let us know and provided an estimate of how long it would last. Another nice amenity: every seat has AC power outlets and USB ports. It was a 6-hour flight, which seems a bit much for a single-aisle jet: over 200 passengers with access to only 3 restrooms (assuming you time it right and won't be blocked in by beverage carts); food is mediocre, over-priced, and (if you failed to reserve a meal ahead of time) the flight attendants have to process food/meal sales in the aisle. To access any entertainment, you must use your own device to log on to the plane's wi-fi (or bring your own entertainment).

Seats are more spacious than other airlines that have you packed like sardines.

I would have appreciated notification that our flight was moved to another gate LAST MINUTE so that we would not have missed it. We got no such notice and had to spend another night to catch an available flight in the morning, which was huge inconvenience. We will never fly Alaska again.

Liked premium seat. Did not like: having to pay for entertainment/wi-fi; having to pay for food; single-aisle; and, only three rest rooms.

The airline was way too cold. We were freezing, I don’t know if that is normal. Overall it was pretty good flight. Always flown Alaska Airlines and I am not changing.

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

Great. They got us on an earlier flight. Really appreciated that

I had very little legroom and the only food available was really salty

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

My window shade didn’t work. So I missed coming into my city. ☹️

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

I liked everything about the flight. The service was excellent!

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

Delayed a day due to snow storm. Was upgraded. That kind of made up for significant delays from FLL to COS with no compensation or acknowledgement.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Other than the two hour delay, it was fine. Of course they were very professional and kept us informed throughout the whole delay..

Good. The wife was not working but then it got resolved.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

It was a good flight. Of course it was full, but it went well.

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

We are gluten free, there were not any available complimentary gluten free options.

Flight delayed 3 times. We were directed to go to a gate across from our gate. The plane wasn't there yet so we had to wait for it to arrive, then deplane everyone and then wait again for the plane to be cleaned. After 45 minuites we were allowed on the plane. The first plane had mechanical issues. The 2nd plane must have had bathroom issues because we did not have any food service whatsoever. No snack or beverage. That made for a long time not to have anything considering that we had just made it to the original gate and we had no time to stop to get food or a drink. Then we didn't want to leave the gate to get food because we wouldn't know how much longer the delay would be. Then the next gate change. Had we been told that the total time would have been aprox 45 min later we would have left to get food and a beverage. We had to wait again for the okay to the pilot to take off so we were on the runway for another 20 min. Overall, we were delayed over 2 hours which felt like 4 hours.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

Worst airline to travel with. They treat you like a prisoner in a jailhouse barking out orders and threats. Nickle and dime you to the same price or higher than a respectable airline like one of the big 3 . Might as well fly with standard airlines

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

It was impossible to change a carry-on for a checked bag after the initial selection. The flight was delayed 14 hours "to allow for a late arriving aircraft." The seats were shockingly uncomfortable. This was only the second time I've seen seats that didn't recline in an airline. The first was in an East Bloc airline before the fall if the Iron Curtain.

First time flying Frontier, I am not sure the Ala Carte menu of options is for me.

Book cheap flights from Seattle to Florida Keys

Recent round-trip flight deals

9/11Wed
1 stopFrontier
12h 04mSEA-MIA
9/18Wed
1 stopFrontier
20h 16mMIA-SEA
$173
9/4Wed
1 stopFrontier
23h 33mSEA-MIA
10/1Tue
1 stopFrontier
20h 16mMIA-SEA
$179
9/4Wed
nonstopAmerican Airlines
5h 51mSEA-MIA
10/8Tue
nonstopAmerican Airlines
6h 50mMIA-SEA
$267
8/20Tue
nonstopAlaska Airlines
5h 55mSEA-MIA
8/28Wed
nonstopAlaska Airlines
6h 34mMIA-SEA
$277
8/19Mon
nonstopAlaska Airlines
5h 54mSEA-MIA
8/29Thu
nonstopAlaska Airlines
6h 34mMIA-SEA
$287
8/18Sun
1 stopAmerican Airlines
7h 58mSEA-MIA
8/22Thu
nonstopAmerican Airlines
6h 31mMIA-SEA
$372
10/23Wed
1 stopUnited Airlines
15h 44mSEA-MIA
10/30Wed
1 stopUnited Airlines
13h 28mMIA-SEA
$373
9/3Tue
1 stopDelta
8h 08mSEA-EYW
9/6Fri
1 stopDelta
10h 50mEYW-SEA
$478
8/19Mon
1 stopDelta
8h 08mSEA-EYW
8/21Wed
1 stopDelta
10h 52mEYW-SEA
$513
8/19Mon
3 stopsUnited Airlines
26h 47mSEA-EYW
8/21Wed
2 stopsUnited Airlines
19h 34mEYW-SEA
$625

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Recent one-way flight deals

9/10Tue
3 stopsSpirit Airlines
17h 42mSEA-MIA
$86
9/6Fri
1 stopFrontier
23h 33mSEA-MIA
$93
8/6Tue
nonstopAmerican Airlines
5h 52mSEA-MIA
$134
7/24Wed
nonstopAlaska Airlines
5h 54mSEA-MIA
$169
8/21Wed
1 stopAmerican Airlines
10h 39mSEA-MIA
$183
8/22Thu
nonstopAlaska Airlines
5h 55mSEA-MIA
$194
8/30Fri
2 stopsUnited Airlines
36h 38mSEA-MIA
$203
11/21Thu
1 stopUnited Airlines
9h 26mSEA-MIA
$205
9/5Thu
1 stopDelta
10h 02mSEA-MIA
$288
7/24Wed
1 stopDelta
8h 08mSEA-EYW
$359

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Last minute flights from Seattle to Florida Keys

Last minute flight, train and bus deals

6/17Mon
multi-stopFrontier
10h 46mSEA-MIA
6/24Mon
multi-stopFrontier
28h 09mMIA-SEA
$279
6/17Mon
multi-stopFrontier
29h 53mSEA-MIA
6/19Wed
multi-stopFrontier
29h 56mMIA-SEA
$288
6/14Fri
multi-stopFrontier
11h 19mSEA-MIA
6/19Wed
multi-stopFrontier
22h 09mMIA-SEA
$291
6/17Mon
multi-stopFrontier
29h 53mSEA-MIA
6/20Thu
multi-stopFrontier
14h 23mMIA-SEA
$318
6/17Mon
multi-stopFrontier
10h 46mSEA-MIA
6/21Fri
multi-stopFrontier
10h 00mMIA-SEA
$320
6/17Mon
multi-stop
25h 27mSEA-MIA
6/24Mon
multi-stop
17h 30mMIA-SEA
$419
6/17Mon
multi-stopSpirit Airlines
22h 05mSEA-MIA
6/25Tue
multi-stopSpirit Airlines
21h 53mMIA-SEA
$442
6/17Mon
multi-stopSpirit Airlines
16h 52mSEA-MIA
6/25Tue
multi-stopSpirit Airlines
21h 53mMIA-SEA
$462
6/14Fri
multi-stop
8h 52mSEA-MIA
6/18Tue
multi-stop
25h 21mMIA-SEA
$477
6/15Sat
nonstopAlaska Airlines
5h 54mSEA-MIA
6/22Sat
nonstopAlaska Airlines
6h 33mMIA-SEA
$699

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Seattle - Florida Keys Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Florida Keys - Seattle

Cabin classes:

$199
$124
$266
$58