HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$59+ Cheap flights from Boston (BOS) to Key Largo, FL

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — MIA
nov. 25 — dic. 21
lun. 11/25
lun. 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Key Largo with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Boston Logan Intl to Key Largo are usually found in September or January, booked 63 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from Boston to Key Largo

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Key Largo (KE9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 20, 2024.

Popular in

April

Cheapest in

September

Round-trip from

$70
(Kiwi.com)

One-way from

$59
(JetBlue)
High demand for flights, 18% potential price rise
Search Deals
Best time to find cheap flights, 30% potential price drop
Search Deals
From Boston Logan Intl to Key Largo
Search Deals
One-way flight from Boston Logan Intl to Key Largo
Search Deals

Find flight deals from Boston to Key Largo

Cheapest flights from Boston to Key Largo
Explore the most affordable flight options available from Boston to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2024.

This Priceline deal was found by Cheapflights users on 11/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/186:30 amBOS - MIA
Nonstop3h 41mMultiple Airlines
jue. 12/196:30 amMIA - BOS
Nonstop3h 37mMultiple Airlines
Deal found 11/19$72
This Frontier deal was found by Cheapflights users on 11/20. 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.
mar. 12/106:00 amBOS - MIA
1 stop11h 10mFrontier
mar. 12/177:15 amMIA - BOS
Nonstop3h 27mFrontier
Deal found 11/20$73
This Cheapflightsfares deal was found by Cheapflights users on 11/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/145:45 pmBOS - MIA
Nonstop3h 45mSpirit Airlines
sáb. 12/215:45 amMIA - BOS
Nonstop3h 14mSpirit Airlines
Deal found 11/19$76
This JetBlue deal was found by Cheapflights users on 11/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/81:50 pmBOS - MIA
Nonstop3h 35mJetBlue
mié. 12/1111:19 amMIA - BOS
Nonstop3h 16mJetBlue
Deal found 11/20$117
This Delta deal was found by Cheapflights users on 11/19. 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.
mié. 12/113:55 pmBOS - MIA
Nonstop3h 44mDelta
sáb. 12/147:59 pmMIA - BOS
Nonstop3h 30mDelta
Deal found 11/19$122
This American Airlines deal was found by Cheapflights users on 11/19. 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.
mié. 12/48:53 amBOS - MIA
Nonstop3h 40mAmerican Airlines
sáb. 12/76:25 pmMIA - BOS
Nonstop3h 21mAmerican Airlines
Deal found 11/19$137
This United Airlines deal was found by Cheapflights users on 11/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/112:00 pmBOS - MIA
1 stop7h 14mUnited Airlines
lun. 12/168:00 amMIA - BOS
1 stop7h 51mUnited Airlines
Deal found 11/18$214

Find flights from Boston to Key Largo within your budget

Customize your flight search to find flights from Boston to Key Largo 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 2,629,791 searches. Data last updated noviembre 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

dom. 1/19

11:38 am-3:20 pm

Nonstop3h 42m

Miami

jue. 1/23

6:00 am-9:34 am

Nonstop3h 34m

$70

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mié. 12/18

6:30 am-10:11 am

Nonstop3h 41m

Miami

jue. 12/19

6:30 am-10:07 am

Nonstop3h 37m

$72

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

vie. 12/6

5:45 pm-9:30 pm

Nonstop3h 45m

Miami

mar. 1/7

11:06 am-2:28 pm

Nonstop3h 22m

$73

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

dom. 12/8

1:50 pm-5:25 pm

Nonstop3h 35m

Miami

mar. 12/17

11:19 am-2:35 pm

Nonstop3h 16m

$117

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mié. 12/11

3:55 pm-7:39 pm

Nonstop3h 44m

Miami

sáb. 12/14

7:59 pm-11:29 pm

Nonstop3h 30m

$122

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mié. 1/15

6:04 pm-9:56 pm

Nonstop3h 52m

Miami

mié. 1/22

8:08 pm-11:46 pm

Nonstop3h 38m

$143

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mié. 12/11

2:00 pm-9:14 pm

1 stop7h 14m

Miami

lun. 12/16

8:00 am-3:51 pm

1 stop7h 51m

$214

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mar. 2/11

8:00 am-11:38 am

Nonstop3h 38m

$59

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

mar. 2/25

9:07 am-2:18 pm

1 stop5h 11m

$60

BostonMiami

BOS - MIA

BOSMIA

Boston Logan Intl

sáb. 1/18

4:00 pm-7:52 pm

Nonstop3h 52m

$64

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 15 results
1
2

Best time to book a flight from Boston to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Boston 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.

Travel insights for flights from Boston to Key Largo

Get recent, data-driven insights about flights from Boston to Key Largo including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Boston to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Key Largo. Price data was last updated on November 15, 2024.

The price you pay for your flight from Boston to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boston to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Boston to Key Largo (average of $218). Flying from Boston to Key Largo in March is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to KE9?

Find hourly flight availability from Boston to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 20, 2024.

When flying from Boston to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Boston to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Boston to Key Largo. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Boston to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Key Largo

Explore weekly flight availability from Boston to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated noviembre 20, 2024.

The most flights from BOS to KE9 are scheduled on a Wednesday (23 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated noviembre 20, 2024.
To help decide which airline to fly from Boston to Key Largo, see what other customers have to say about Spirit Airlines, United Airlines and Frontier. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,394 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Boston to Key Largo. 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 from for flights from Boston to Key Largo?

    If you book a flight to Key Largo from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 13 flights from Logan Intl to Key Largo per day from 7 different airlines.

  • How popular is this Boston to Key Largo flight route?

    The Boston Logan Intl to Key Largo flight path was viewed by 184 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Boston to Key Largo one-way?

    $59 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Frontier and Delta, with prices starting from $60 and $64, respectively.

  • What are the most reliable airlines from Boston to Key Largo?

    Before booking your flight to Key Largo from Boston, check out the most reliable airlines to get you to your destination on time: KLM (100%), Spirit Airlines (100%), Republic Airways( 100%).

  • What are the cheapest flights from Boston to Key Largo?

    The cheapest flight price from Boston to Key Largo is $58. On average you can expect to pay $744. The most popular route, (Boston Logan Intl - Miami), can usually be booked for $51.

  • Can I find deals for flights from Boston to Key Largo that include hotel bookings?

    Yes. In addition to deals on Boston to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Key Largo.

  • Can I find deals for business class flights from Boston to Key Largo?

    Yes. Cheapflights offers flight deals from Boston to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Boston to Key Largo (average of $218). Flying from Boston to Key Largo in March is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Orlando flights
Boston to Miami flights
Boston to Fort Lauderdale flights
Boston to Tampa flights
Hartford to Orlando flights
Boston to West Palm Beach flights
Boston to Fort Myers flights
Hartford to Fort Lauderdale flights
Boston to Jacksonville flights
Boston to Key West flights
Boston to Sarasota flights
Hartford to Miami flights
Albany to Orlando flights
Hartford to Tampa flights
Hartford to West Palm Beach flights
Albany to Fort Lauderdale flights
Hartford to Fort Myers flights
Albany to Tampa flights
Albany to Miami flights
Worcester to Orlando flights
Boston to Pensacola flights
Worcester to Fort Lauderdale flights
Albany to Fort Myers flights
Hartford to Sarasota flights
Hartford to Key West flights
Boston to St Petersburg flights
Hartford to Jacksonville flights
Boston to Panama City flights
Boston to Daytona Beach flights
Worcester to Miami flights
Hartford to St Petersburg flights
Albany to Daytona Beach flights
Albany to Sarasota flights
Albany to West Palm Beach flights
Hartford to Pensacola flights
Albany to Orlando Sanford Intl flights
Boston to Orlando Sanford Intl flights
Hartford to Melbourne flights
Hartford to Daytona Beach flights
Boston to Melbourne flights
Boston to Gainesville flights
Albany to Jacksonville flights
Hartford to Gainesville flights
Worcester to Fort Myers flights
Albany to St Petersburg flights
Boston to Valparaiso flights
Albany to Key West flights
Albany to Melbourne flights
Worcester to Tampa flights
Hartford to Valparaiso flights

Top 7 airlines flying from Boston to Key Largo

Discover the top 7 airlines that operate flights from Boston to Key Largo. 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 2,629,791 searches. Data last updated noviembre 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$35Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$209FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$95Average$393FlexibilityNo cancel feeOn-time62%
DeltaCheapest$116Average$311FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$146Average$359FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$195Average$383FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$426Average$524FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines