BOS

$42 Find Cheap Flights from Florida Keys to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boston departing on 6/26. 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
1 adult, Economy

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Cheap Flights from Florida Keys to Boston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Florida Keys to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Florida Keys to Boston

Thu, Jun 26 - Sun, Jun 29
Spirit Airlines Logo
2:35 pm - 6:08 pmMIA-BOS
3h 33mnonstop
Spirit Airlines Logo
9:44 am - 1:28 pmBOS-MIA
3h 44mnonstop
$85Spirit Airlines
Find Deal
Thu, Jun 26 - Sun, Jun 29
Spirit Airlines Logo
2:35 pm - 6:08 pmMIA-BOS
3h 33mnonstop
Spirit Airlines Logo
9:44 am - 1:28 pmBOS-MIA
3h 44mnonstop
$87Spirit Airlines
Find Deal
Thu, Jun 26 - Sun, Jun 29
Spirit Airlines Logo
2:35 pm - 6:08 pmMIA-BOS
3h 33mnonstop
Spirit Airlines Logo
9:44 am - 1:28 pmBOS-MIA
3h 44mnonstop
$91Spirit Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 10
JetBlue Logo
2:22 pm - 5:45 pmMIA-BOS
3h 23mnonstop
JetBlue Logo
10:03 am - 1:26 pmBOS-MIA
3h 23mnonstop
$97JetBlue
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Sat, Aug 2 - Tue, Oct 21
American Airlines Logo
8:02 pm - 11:27 pmMIA-BOS
3h 25mnonstop
American Airlines Logo
7:41 am - 11:20 amBOS-MIA
3h 39mnonstop
$117American Airlines
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Wed, Sep 17 - Mon, Sep 22
JetBlue Logo
2:22 pm - 5:45 pmMIA-BOS
3h 23mnonstop
JetBlue Logo
10:03 am - 1:26 pmBOS-MIA
3h 23mnonstop
$122JetBlue
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Fri, Oct 10 - Tue, Oct 14
American Airlines Logo
5:30 pm - 8:47 pmMIA-BOS
3h 17mnonstop
American Airlines Logo
5:43 am - 9:20 amBOS-MIA
3h 37mnonstop
$134American Airlines
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Thu, Sep 25 - Sat, Sep 27
Delta Logo
7:55 pm - 11:24 pmMIA-BOS
3h 29mnonstop
Delta Logo
3:50 pm - 7:31 pmBOS-MIA
3h 41mnonstop
$142Delta
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Fri, Jul 11 - Tue, Jul 15
Delta Logo
8:20 pm - 11:54 pmMIA-BOS
3h 34mnonstop
Delta Logo
7:00 am - 10:30 amBOS-MIA
3h 30mnonstop
$148Delta
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Sat, Aug 2 - Sun, Oct 19
Frontier Logo
9:42 pm - 7:59 amMIA-BOS
10h 17m1 stop
Frontier Logo
11:25 am - 3:01 pmBOS-MIA
3h 36mnonstop
$216Frontier
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Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$42
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Miami to Boston

FAQs for booking flights from Florida Keys to Boston

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

    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 Florida Keys to Boston.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Florida Keys 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 Florida Keys to Boston?

    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 Boston with an airline and back to Florida Keys with another airline.

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

    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 Boston from Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 5 airlines serving from Florida Keys to Boston

 
Need help choosing which airline to fly with from Florida Keys to Boston? 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
DeltaOverall score based on 7950 reviews
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

10.0 ExcellentDebbie A, Jun 2025JAX - BOS
Read more Delta reviews

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Flight left early and arrived early. the whole trip was excellent.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

I think they can provide the better food/snack option for the 4 hours flight. Drinks are fine.

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Great flight. Departed early, arrived early. However they were out of meals for sale. Also, we arrived early and the gate was not available so we sat on the taxiway for quite a while (not JetBlue’s fault).

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

It was too hot in the cabin. The AC did not help.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

Loved the leg room and tvs screens on the seats and free WiFi. Wish the price was lower and could save by rebooking

The flight was delayed for 4 hours. Once onboard the crew was wonderful.

Love the mosaic program, being able to move to an extra space seat for free is awesome

I rate it is good we had a 4-hour travel delay at one point but JetBlue gave out food vouchers and travel points credits for another flight so they try to make up for it

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Crew professional. Easy bag drop off. On time. Good entertainment.

Flight was late and missed connecting flight. They could have better accommodated, but instead did an overnight and had to arrive the next afternoon.

The boarding crew was incredibly helpful getting me on an earlier flight

They have lost any customer service care and support. Terrible airline now and been for awhile.

The flight was delayed leaving Miami. When we arrived in Charlotte, we were unable to park at our scheduled gate. We had to wait another 30-45 minutes before we could park at a different gate. All in all, we were delayed by almost two hours arriving in Charlotte.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

Need screens for tv/movies. Seats are more cramped than any other airlines. Seats are hard. They don’t recline. And in flight time should not be used for sales pitches.

Boarding east and ontime. Seat spacing was tight, and seats don’t recline.

The flight was canceled and was bounced around time wise with my elderly parents. That being said the gentleman in custody service was amazingly helpful

It amaze me how other airlines leave on time and Spirit always have some type of delay. I’ve flown with Spirit many times, but it reached a point I’d rather pay twice the amount and not deal with this corporation they never do nothing to reimburse people for their time or headaches.

Easy boarding and good flight. Need to work on the beverage and snack situation

Spirit charges you to breathe in their presence. They have you pick and buy your seat in advance and then I got bumped from the seat I paid for because THEY overbooked the flight by a dozen people. they do not provide any entertainment, they do not provide even a small cup of water - you have to pay for everything. I will never fly Spirit again.

While on the flight we had a delay and had to sit on the plane while maintenance fixed it. It’s ended up taking an hour and a half longer to leave than expected. I had an unruly passenger sitting behind me that vaped during the flight and was rude and loud for the majority of the flight.

The flight, the pilot, the flight crew, and the ground personnel were all great, despite the sudden and lengthy FAA Ground Stop in Boston, which SPIRIT obviously had nothing to do with and no control over.

The seats! Do not nickel and dime! Be transparent about all your fees!

Not great. Overpriced and charge you for everything. All but breathing was an extra charge. Never again! Oh if you didn’t check a carry on, you couldn’t use the overhead bins. Crew said those spaces were not available. Personal items MUST go on floor. Yet, there was only 50% capacity at best! So ridiculous.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

Worst airline experience. They were rude and kept changing our seats and/or giving our seats away so our family didn’t get to sit with each other. Almost everyone we dealt with at both airports with this airline was rude. The app kept giving us wrong information making things take longer. Dealing with them before TSA can take close to an hour…longer than I’ve ever had to deal with before. Never using this airline again.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

They switched my flight to Spirit, Never using Kayak again,

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

Asked for a seat change to be w my wife at the gate they were great in sorting it out to make it happen

They cancelled the flight and did nothing. I should be compensated for my uber rides to and from airport. Not a good service by frontier or kayak.

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

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