What is the cheapest airline that flies from Boston Logan Intl to Florida Keys?

Frontier, Spirit Airlines, and Delta are the most popular carriers operating from Boston Logan Intl to Florida Keys

How many flights depart from Boston to Florida Keys on average per week?

As of September 2025, 123 flights take off from Boston and land in Florida Keys each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

What airlines fly to Florida Keys?

American Airlines, JetBlue and Delta are the top three most popular airlines that fly to Florida Keys from Boston according to our data. American Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 5 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Boston Logan Intl Airport to Florida Keys?

Prices for flights from Boston Logan Intl Airport to Florida Keys were last updated today.

How many operators does momondo search for flights from Boston Logan Intl Airport to Florida Keys?

The number of operators available for flights from Boston Logan Intl Airport to Florida Keys is 8 as of September 2025.

How old do you have to be to fly from Boston Logan Intl Airport to Florida Keys?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$56 Cheap Flights from Boston to Florida Keys in 2025/26

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Find the cheapest flights from Boston to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:54 pm - 8:32 pmBOS-MIA

3h 38mnonstop

12:40 pm - 3:56 pmMIA-BOS

3h 16mnonstop

$97Spirit Airlines

Find Deal

Fri, Oct 17 - Fri, Oct 24

4:54 pm - 8:32 pmBOS-MIA

3h 38mnonstop

12:40 pm - 3:56 pmMIA-BOS

3h 16mnonstop

$98Spirit Airlines

Find Deal

Fri, Oct 17 - Mon, Oct 20

11:44 am - 3:20 pmBOS-MIA

3h 36mnonstop

7:24 am - 10:49 amMIA-BOS

3h 25mnonstop

$118Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

11:44 am - 3:20 pmBOS-MIA

3h 36mnonstop

7:24 am - 10:49 amMIA-BOS

3h 25mnonstop

$121Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

4:30 pm - 8:07 pmBOS-MIA

3h 37mnonstop

9:20 pm - 12:34 amMIA-BOS

3h 14mnonstop

$127American Airlines

Find Deal

Sat, Oct 25 - Sat, Nov 1

7:36 am - 11:13 amBOS-MIA

3h 37mnonstop

12:58 pm - 4:12 pmMIA-BOS

3h 14mnonstop

$128American Airlines

Find Deal

Thu, Oct 2 - Wed, Oct 8

7:55 pm - 11:32 pmBOS-MIA

3h 37mnonstop

7:00 am - 10:20 amMIA-BOS

3h 20mnonstop

$137Delta

Find Deal

Fri, Nov 14 - Mon, Nov 17

7:35 am - 11:10 amBOS-MIA

3h 35mnonstop

7:35 pm - 11:00 pmMIA-BOS

3h 25mnonstop

$138Delta

Find Deal

Tue, Oct 14 - Tue, Oct 21

8:10 am - 12:09 pmBOS-EYW

3h 59mnonstop

1:04 pm - 4:56 pmEYW-BOS

3h 52mnonstop

$234JetBlue

Find Deal

Fri, Oct 17 - Fri, Oct 24

8:10 am - 12:09 pmBOS-EYW

3h 59mnonstop

1:04 pm - 4:56 pmEYW-BOS

3h 52mnonstop

$261JetBlue

Find Deal

Sat, Oct 18 - Fri, Oct 24

Frontier flights from Boston to Florida Keys

Our best Frontier deals on Boston to Florida Keys flight tickets

Frontier

Oct 16

BOS11:44 amBoston Logan Intl

3h 36m

MIA3:20 pmMiami

Oct 23

MIA7:24 amMiami

3h 25m

BOS10:49 amBoston Logan Intl

$118

Find similar

Frontier

Oct 16

BOS11:44 amBoston Logan Intl

3h 36m

MIA3:20 pmMiami

Oct 23

MIA7:24 amMiami

3h 25m

BOS10:49 amBoston Logan Intl

$121

Find similar

Frontier

Sep 25

BOS12:59 pmBoston Logan Intl

28h 47m

1 stop

MIA5:46 pmMiami

Oct 2

MIA7:25 amMiami

24h 27m

1 stop

BOS7:52 amBoston Logan Intl

$126

Find similar

Southwest flights from Boston to Florida Keys

Our best Southwest deals on Boston to Florida Keys flight tickets

Southwest

Oct 2

BOS3:50 pmBoston Logan Intl

6h 45m

1 stop

MIA10:35 pmMiami

Oct 6

MIA6:25 amMiami

7h 25m

1 stop

BOS1:50 pmBoston Logan Intl

$151

Find similar

Southwest

Oct 25

BOS3:25 pmBoston Logan Intl

5h 05m

1 stop

MIA8:30 pmMiami

Oct 29

MIA11:45 amMiami

10h 30m

2 stops

BOS10:15 pmBoston Logan Intl

$156

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Fri 10/17

4:54 pm-8:32 pm

Nonstop3h 38m

Miami

Fri 10/24

12:40 pm-3:56 pm

Nonstop3h 16m

$97

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Fri 10/17

4:54 pm-8:32 pm

Nonstop3h 38m

Miami

Mon 10/20

12:40 pm-3:56 pm

Nonstop3h 16m

$98

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 10/16

11:44 am-3:20 pm

Nonstop3h 36m

Miami

Thu 10/23

7:24 am-10:49 am

Nonstop3h 25m

$118

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 10/16

11:44 am-3:20 pm

Nonstop3h 36m

Miami

Thu 10/23

7:24 am-10:49 am

Nonstop3h 25m

$121

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Sat 10/25

4:30 pm-8:07 pm

Nonstop3h 37m

Miami

Sat 11/1

9:20 pm-12:34 am

Nonstop3h 14m

$127

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 10/2

7:36 am-11:13 am

Nonstop3h 37m

Miami

Wed 10/8

12:58 pm-4:12 pm

Nonstop3h 14m

$128

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Fri 11/14

7:55 pm-11:32 pm

Nonstop3h 37m

Miami

Mon 11/17

7:00 am-10:20 am

Nonstop3h 20m

$137

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Tue 10/14

7:35 am-11:10 am

Nonstop3h 35m

Miami

Tue 10/21

7:35 pm-11:00 pm

Nonstop3h 25m

$138

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Fri 10/17

8:10 am-12:09 pm

Nonstop3h 59m

Key West

Fri 10/24

1:04 pm-4:56 pm

Nonstop3h 52m

$234

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Sat 10/18

8:10 am-12:09 pm

Nonstop3h 59m

Key West

Fri 10/24

1:04 pm-4:56 pm

Nonstop3h 52m

$261

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How to get the cheapest flight ticket from Boston to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of January is another great option to travel to Florida Keys, with average flight prices from Boston averaging around $197.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from Boston to Florida Keys is on a Thursday when prices can be found for as low as $399. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $482.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the evening. momondo users have found flights departing from Boston to Florida Keys in the evening for as low as $222. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $530.

What is the cheapest Boston Logan Intl to Florida Keys flight route?

Fly from Boston Logan Intl to Key West for the best Boston Logan Intl - Florida Keys flight prices

How far in advance should I book a flight to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $235 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Boston for as low as $175 on momondo.

What cabin class options are available on Boston Logan Intl to Florida Keys flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Florida Keys flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Boston to Florida Keys.

Cheap Boston to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Florida Keys

Fastest flight time	3h 31m
Direct flights	Every day
Airports in Florida Keys	1 airport

The fastest flight from Boston to Florida Keys takes 3h 31m

Direct flights go from Boston to Florida Keys every day.

There is 1 airport near Florida Keys: Miami (MIA)

Search flight deals

When did momondo last update prices for flights from Boston Logan Intl Airport to Florida Keys?
Prices for flights from Boston Logan Intl Airport to Florida Keys were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to Florida Keys?
The number of operators available for flights from Boston Logan Intl Airport to Florida Keys is 8 as of September 2025.
How old do you have to be to fly from Boston Logan Intl Airport to Florida Keys?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Boston to Florida Keys?
Based on momondo bookings for flights between Boston and Florida Keys, the leading plane model is Airbus A321neo, making up 12.17% of the total bookings. Other popular models include Airbus A321-100/200 with 9.56%, Airbus A220-300 with 9.32%, and Airbus A320-100/200 with 8.54%.

Best airlines flying from Boston to Florida Keys

Compare and see reviews for airlines that fly from Boston to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $66	Free Cancellation	Rating 6.3 8,019 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $145	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
Delta	PriceFrom $216	Free Cancellation	Rating 7.9 7,957 reviews	Search Delta flights
JetBlue	PriceFrom $217	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
American Airlines	PriceFrom $251	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Florida Keys?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Florida Keys from Boston.

Can I find flights from Boston to Florida Keys with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Florida Keys from Boston with this policy.

How can momondo help me find flights from Boston to Florida Keys?

Once you have performed a search for Boston to Florida Keys flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to Florida Keys right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Florida Keys now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Florida Keys and let you know when they change.

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Thu 10/16

Thu 10/23

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Find better results for your trip to Florida Keys

Popular cities in Florida Keys

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Flights to Washington, D.C.from $49

Flights to Bostonfrom $62

Flights to Atlantafrom $51

Flights to Dallasfrom $68

Flights to Seattlefrom $69

Cheap flights from Boston to Florida Keys from $56

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Florida Keys departing on 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Boston to Florida Keys

Cheap round-trip flights

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Cheap last minute flights

Cheap direct flights

Frontier flights from Boston to Florida Keys

Our best Frontier deals on Boston to Florida Keys flight tickets

Southwest flights from Boston to Florida Keys

Our best Southwest deals on Boston to Florida Keys flight tickets

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Use the filters below to find and compare flights from Boston to Florida Keys that are best for you.

See travel insights to Florida Keys from

How to get the cheapest flight ticket from Boston to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Florida Keys?

The month of January is another great option to travel to Florida Keys, with average flight prices from Boston averaging around $197.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from Boston to Florida Keys is on a Thursday when prices can be found for as low as $399. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $482.

What is the cheapest time of day to depart on your flight to Florida Keys?

What is the cheapest Boston Logan Intl to Florida Keys flight route?

Fly from Boston Logan Intl to Key West for the best Boston Logan Intl - Florida Keys flight prices

How far in advance should I book a flight to Florida Keys?

What cabin class options are available on Boston Logan Intl to Florida Keys flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to Florida Keys flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Boston to Florida Keys.

What is the cheapest airline that flies from Boston Logan Intl to Florida Keys?

Frontier, Spirit Airlines, and Delta are the most popular carriers operating from Boston Logan Intl to Florida Keys

What airlines fly to Florida Keys?

How many flights depart from Boston to Florida Keys on average per week?

As of September 2025, 123 flights take off from Boston and land in Florida Keys each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

Cheap Boston to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Florida Keys

Fastest flight time

Direct flights

Airports in Florida Keys

When did momondo last update prices for flights from Boston Logan Intl Airport to Florida Keys?

How many operators does momondo search for flights from Boston Logan Intl Airport to Florida Keys?

How old do you have to be to fly from Boston Logan Intl Airport to Florida Keys?

What documentation or ID do you need to fly to Florida Keys?

What is the most popular plane model from Boston to Florida Keys?

Best airlines flying from Boston to Florida Keys

Compare and see reviews for airlines that fly from Boston to Florida Keys with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Florida Keys?

Can I find flights from Boston to Florida Keys with flexible booking policies on momondo?

How can momondo help me find flights from Boston to Florida Keys?

I’m not ready to book a flight from Boston to Florida Keys right now. Can momondo alert me if prices change?

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Popular flights according to clicks in the last 7 days on momondo