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Cheap flights from Boston to Florida Keys from $74

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 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Florida Keys

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 6:11 pm
BOS
-
MIA
12h 11m1 stop
Multiple Airlines Logo
12:56 pm - 4:19 pm
MIA
-
BOS
3h 23mnonstop
$147Multiple Airlines
Tue, Jan 6 - Wed, Jan 14
Delta Logo
8:15 pm - 12:05 am
BOS
-
MIA
3h 50mnonstop
Delta Logo
1:21 pm - 8:31 pm
MIA
-
BOS
7h 10m1 stop
$148Delta
Fri, Jan 23 - Tue, Jan 27
Delta Logo
3:00 pm - 9:10 pm
BOS
-
MIA
6h 10m1 stop
Delta Logo
8:25 pm - 11:58 pm
MIA
-
BOS
3h 33mnonstop
$149Delta
Fri, Jan 9 - Fri, Jan 16
Delta Logo
3:30 pm - 7:16 pm
BOS
-
MIA
3h 46mnonstop
Delta Logo
7:00 am - 1:22 pm
MIA
-
BOS
6h 22m1 stop
$150Delta
Thu, Jan 8 - Wed, Jan 14
Multiple Airlines Logo
5:25 pm - 9:07 pm
BOS
-
MIA
3h 42mnonstop
Multiple Airlines Logo
12:28 pm - 1:04 am
MIA
-
BOS
12h 36m1 stop
$151Multiple Airlines
Thu, Feb 26 - Thu, Mar 5
Spirit Airlines Logo
3:43 pm - 7:21 pm
BOS
-
MIA
3h 38mnonstop
Spirit Airlines Logo
1:04 pm - 4:28 pm
MIA
-
BOS
3h 24mnonstop
$152Spirit Airlines
Sun, Feb 22 - Thu, Feb 26
Multiple Airlines Logo
6:00 am - 7:30 pm
BOS
-
MIA
13h 30m1 stop
Multiple Airlines Logo
1:01 pm - 1:13 am
MIA
-
BOS
12h 12m2 stops
$153Multiple Airlines
Thu, Jan 1 - Tue, Jan 13
Spirit Airlines Logo
5:25 pm - 9:07 pm
BOS
-
MIA
3h 42mnonstop
Spirit Airlines Logo
8:26 pm - 11:48 pm
MIA
-
BOS
3h 22mnonstop
$154Spirit Airlines
Sun, Feb 22 - Fri, Feb 27
Frontier Logo
6:00 am - 6:00 pm
BOS
-
MIA
12h 00m1 stop
Frontier Logo
10:41 pm - 9:57 am
MIA
-
BOS
11h 16m1 stop
$155Frontier
Mon, Mar 2 - Tue, Mar 10
United Airlines Logo
6:00 am - 1:03 pm
BOS
-
EYW
7h 03m1 stop
United Airlines Logo
2:25 pm - 11:49 pm
EYW
-
BOS
9h 24m2 stops
$282United Airlines
Mon, Feb 2 - Fri, Feb 6

Delta flights from Boston to Florida Keys

Our best Delta deals on Boston to Florida Keys flight tickets
Delta
Jan 23
BOS8:15 pmBoston Logan Intl
3h 50m
MIA12:05 amMiami
Feb 2
MIA9:24 amMiami
5h 58m
1 stop
BOS3:22 pmBoston Logan Intl
$148
Find similar
Delta
Jan 9
BOS3:00 pmBoston Logan Intl
6h 10m
1 stop
MIA9:10 pmMiami
Jan 16
MIA8:25 pmMiami
3h 33m
BOS11:58 pmBoston Logan Intl
$149
Find similar
Delta
Jan 8
BOS3:30 pmBoston Logan Intl
3h 46m
MIA7:16 pmMiami
Jan 14
MIA7:00 amMiami
6h 22m
1 stop
BOS1:22 pmBoston Logan Intl
$150
Find similar

Southwest flights from Boston to Florida Keys

Our best Southwest deals on Boston to Florida Keys flight tickets
Southwest
Jan 9
BOS2:40 pmBoston Logan Intl
6h 50m
1 stop
MIA9:30 pmMiami
Jan 18
MIA7:55 amMiami
5h 45m
1 stop
BOS1:40 pmBoston Logan Intl
$159
Find similar
Southwest
Jan 13
BOS9:55 amBoston Logan Intl
11h 05m
2 stops
MIA9:00 pmMiami
Jan 15
MIA6:30 amMiami
8h 25m
1 stop
BOS2:55 pmBoston Logan Intl
$161
Find similar
Southwest
Jan 8
BOS9:35 amBoston Logan Intl
6h 35m
1 stop
MIA4:10 pmMiami
Jan 14
MIA6:55 amMiami
7h 25m
2 stops
BOS2:20 pmBoston Logan Intl
$168
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Florida Keys 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, momondo users made 832,500 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from Boston to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Tue 1/6

6:00 am-6:11 pm

1 stop12h 11m

Miami

Wed 1/14

12:56 pm-4:19 pm

Nonstop3h 23m

$147

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Fri 1/23

8:15 pm-12:05 am

Nonstop3h 50m

Miami

Tue 1/27

1:21 pm-8:31 pm

1 stop7h 10m

$148

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Fri 1/9

3:00 pm-9:10 pm

1 stop6h 10m

Miami

Fri 1/16

8:25 pm-11:58 pm

Nonstop3h 33m

$149

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 1/8

3:30 pm-7:16 pm

Nonstop3h 46m

Miami

Wed 1/14

7:00 am-1:22 pm

1 stop6h 22m

$150

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 2/26

5:25 pm-9:07 pm

Nonstop3h 42m

Miami

Thu 3/5

12:28 pm-1:04 am

1 stop12h 36m

$151

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Sun 2/22

3:43 pm-7:21 pm

Nonstop3h 38m

Miami

Thu 2/26

1:04 pm-4:28 pm

Nonstop3h 24m

$152

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Thu 1/1

6:00 am-7:30 pm

1 stop13h 30m

Miami

Tue 1/13

1:01 pm-1:13 am

2 stops12h 12m

$153

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Sun 2/22

5:25 pm-9:07 pm

Nonstop3h 42m

Miami

Fri 2/27

8:26 pm-11:48 pm

Nonstop3h 22m

$154

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

Mon 3/2

6:00 am-6:00 pm

1 stop12h 00m

Miami

Tue 3/10

10:41 pm-9:57 am

1 stop11h 16m

$155

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Mon 2/2

6:00 am-1:03 pm

1 stop7h 03m

Key West

Fri 2/6

2:25 pm-11:49 pm

2 stops9h 24m

$282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $395. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $471.

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 $242. 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 $532.

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 $240 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 $179 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?

  • 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?

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 AirlinesPriceFrom $66Free CancellationRating
6.3
8,157 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $135Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,011 reviews
Search Delta flights
JetBluePriceFrom $240Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
American AirlinesPriceFrom $250Free CancellationRating
7.2
11,047 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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