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$42+ Cheap flights from Key Largo, FL to Boston (BOS)

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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BOS
janv. 26 — févr. 21
dim. 1/26
dim. 2/2
1 adult, Economy
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The best prices from Key Largo to Boston Logan Intl are usually found in September or January, booked 66 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Key Largo to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Key Largo (KE9) to Boston (BOS). 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 janvier 21, 2025.

Round-trip from

$53
(Trip.com)

One-way from

$42
(Cheapflightsfares)

Popular in

June

Cheapest in

September

Average price

$168
From Key Largo to Boston Logan Intl
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One-way flight from Key Largo to Boston Logan Intl
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Highest demand for flights based on searches. 16% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Key Largo to Boston

Cheapest flights from Key Largo to Boston
Explore the most affordable flight options available from Key Largo to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 2/66:00 amMIA - BOS
Nonstop3h 34mFrontier
dim. 2/911:38 amBOS - MIA
Nonstop3h 42mFrontier
Deal found 1/21$53
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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.
ven. 1/316:00 amMIA - BOS
Nonstop3h 34mMultiple Airlines
lun. 2/33:59 pmBOS - MIA
Nonstop3h 42mMultiple Airlines
Deal found 1/21$56
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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.
mer. 2/123:53 pmMIA - BOS
Nonstop3h 21mSpirit Airlines
mer. 2/198:45 amBOS - MIA
Nonstop3h 38mSpirit Airlines
Deal found 1/21$64
This Delta deal was found by Cheapflights users on 1/21. 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.
jeu. 2/67:15 pmMIA - BOS
Nonstop3h 25mDelta
dim. 2/94:40 pmBOS - MIA
Nonstop3h 51mDelta
Deal found 1/21$127
This JetBlue deal was found by Cheapflights users on 1/21. 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.
sam. 2/156:00 amMIA - BOS
1 stop5h 20mJetBlue
mer. 2/1912:40 pmBOS - MIA
1 stop5h 44mJetBlue
Deal found 1/21$147
This United Airlines deal was found by Cheapflights users on 1/21. 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.
mar. 2/46:15 amMIA - BOS
1 stop7h 52mUnited Airlines
mer. 2/55:45 amBOS - MIA
2 stops8h 05mUnited Airlines
Deal found 1/21$204

Find flights from Key Largo to Boston within your budget

Customize your flight search to find flights from Key Largo to Boston 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 2,558,603 searches. Data last updated janvier 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MiamiBoston

MIA - BOS

MIABOS

Miami

jeu. 2/6

6:00 am-9:34 am

Nonstop3h 34m

Boston Logan Intl

dim. 2/9

11:38 am-3:20 pm

Nonstop3h 42m

$53

MiamiBoston

MIA - BOS

MIABOS

Miami

ven. 1/31

6:00 am-9:34 am

Nonstop3h 34m

Boston Logan Intl

lun. 2/3

3:59 pm-7:41 pm

Nonstop3h 42m

$56

MiamiBoston

MIA - BOS

MIABOS

Miami

mer. 2/12

3:53 pm-7:14 pm

Nonstop3h 21m

Boston Logan Intl

mer. 2/19

8:45 am-12:23 pm

Nonstop3h 38m

$64

MiamiBoston

MIA - BOS

MIABOS

Miami

jeu. 2/6

7:15 pm-10:40 pm

Nonstop3h 25m

Boston Logan Intl

dim. 2/9

4:40 pm-8:31 pm

Nonstop3h 51m

$127

MiamiBoston

MIA - BOS

MIABOS

Miami

sam. 2/15

6:00 am-11:20 am

1 stop5h 20m

Boston Logan Intl

mer. 2/19

12:40 pm-6:24 pm

1 stop5h 44m

$147

MiamiBoston

MIA - BOS

MIABOS

Miami

mar. 2/4

6:15 am-2:07 pm

1 stop7h 52m

Boston Logan Intl

mer. 2/5

5:45 am-1:50 pm

2 stops8h 05m

$204

MiamiBoston

MIA - BOS

MIABOS

Miami

jeu. 3/13

7:05 am-10:33 am

Nonstop3h 28m

$42

MiamiBoston

MIA - BOS

MIABOS

Miami

jeu. 3/20

7:23 pm-10:50 pm

Nonstop3h 27m

$47

MiamiBoston

MIA - BOS

MIABOS

Miami

mar. 2/4

8:20 am-11:34 am

Nonstop3h 14m

$64

MiamiBoston

MIA - BOS

MIABOS

Miami

mar. 2/25

7:00 am-2:23 pm

1 stop7h 23m

$69

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 14 results
1
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Best time to book a flight from Key Largo to Boston

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Boston. Price data was last updated on January 17, 2025.

The price you pay for your flight from Key Largo to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 66 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 Key Largo to Boston?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Boston (average of $218). Flying from Key Largo to Boston in July is currently the most expensive (average of $311). 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 KE9 to BOS?

Find hourly flight availability from Key Largo to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated janvier 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Boston as you normally would.

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

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Boston. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Key Largo to Boston

Explore weekly flight availability from Key Largo to Boston. 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 janvier 21, 2025.

The most flights from KE9 to BOS are scheduled on a Wednesday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 on average).

Rainfall in Boston by month

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

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Temperature in Boston by month

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

If weather is an important factor for your trip to Boston, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated janvier 21, 2025.
To help decide which airline to fly from Key Largo to Boston, see what other customers have to say about Spirit Airlines, Frontier and JetBlue. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,201 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

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

    Boston Logan Intl (BOS) is the airport you will fly into if you book a flight from Key Largo to Boston. You should not have trouble finding flights to Logan Intl from Key Largo; the airport handles an average of 28 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Boston airport from Key Largo. It is only a 2.6 mi journey from Logan Intl (BOS) to Boston’s city center.

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

    Flights from Key Largo to Boston Logan Intl have been viewed 30 times in the past calendar month.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $42. Spirit Airlines flights start at $47 while deals on American Airlines start at $64 one-way.

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

    Consider KLM (91%), Republic Airways (89%) or Iberia (86%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Boston.

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

    On average you can expect to pay $706 for a flight from Key Largo to Boston. The cheapest flight overall is $37 while the most popular route, (Miami - Boston Logan Intl) is currently priced at $51.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Boston 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 Key Largo to Boston?

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Boston (average of $218). Flying from Key Largo to Boston in July is currently the most expensive (average of $311). 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

Traveling to a place near Key Largo?

Book flights to Key Largo if you plan to visit one of these locations
Sturbridge
Warwick
Marlborough
Waltham
Brockton
Cambridge
Watertown
Framingham
Somerville
Chestnut Hill
Seekonk
Randolph
Lowell
West Yarmouth
Woburn
Saco
Seabrook
Salem
Brookline
Fall River

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Top 6 airlines flying from Key Largo to Boston

Discover the top 6 airlines that operate flights from Key Largo to Boston. 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 2,558,603 searches. Data last updated janvier 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$111FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$62Average$161FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$70Average$330FlexibilityNo cancel feeOn-time62%
DeltaCheapest$95Average$287FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$118Average$307FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$313FlexibilityNo cancel feeOn-time69%
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