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Key Largo

$39+ Cheap flights from Baltimore (BWI) 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — MIA
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to Key Largo are usually found in September or August, booked 20 days in advance, depart on a Friday or Monday and return on a Friday

Cheap flight deals from Baltimore to Key Largo

Keep the following information in mind while searching for Baltimore to Key Largo flight deals. Data was last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$78
(Frontier)

One-way from

$39
(Frontier)

Popular in

December

Cheapest in

September

Average price

$219
Provider with most accurate pricing for Washington, D.C. (WAS)-Miami flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Miami flights.
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From Baltimore/Washington to Key Largo
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One-way flight from Baltimore/Washington to Key Largo
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Highest demand for flights based on searches. 24% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Baltimore to Key Largo

Cheapest flights from Baltimore to Key Largo
Explore the most affordable flight options available from Baltimore to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Frontier deal was found by Cheapflights users on 3/24. 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.
Tue 7/16:00 amBWI - MIA
Nonstop2h 48mFrontier
Tue 7/89:24 pmMIA - BWI
Nonstop2h 56mFrontier
Deal found 3/24$78
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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.
Tue 4/86:11 pmBWI - MIA
Nonstop2h 45mSpirit Airlines
Tue 4/155:45 amMIA - BWI
Nonstop2h 35mSpirit Airlines
Deal found 3/23$90
This Priceline deal was found by Cheapflights users on 3/24. 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.
Sat 4/199:18 pmBWI - MIA
Nonstop2h 54mMultiple Airlines
Wed 4/235:45 amMIA - BWI
Nonstop2h 35mMultiple Airlines
Deal found 3/24$98
This Southwest deal was found by Cheapflights users on 3/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:30 pmBWI - MIA
Nonstop2h 45mSouthwest
Tue 5/137:15 amMIA - BWI
Nonstop2h 35mSouthwest
Deal found 3/23$167
This Delta deal was found by Cheapflights users on 3/24. 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.
Tue 4/86:55 pmBWI - MIA
1 stop5h 57mDelta
Wed 4/168:10 amMIA - BWI
1 stop4h 49mDelta
Deal found 3/24$197
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Tue 4/156:40 amBWI - MIA
1 stop6h 22mAmerican Airlines
Tue 4/159:03 pmMIA - BWI
Nonstop2h 34mAmerican Airlines
Deal found 3/24$212

Cheapflights Fare Finder

Customize your flight search to find flights from Baltimore 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 2,558,603 searches. Data last updated March 25, 2025.
Use the filters below to find and compare flights from Baltimore to Key Largo that are best for you.

Fly from

Baltimore

Fly to

Key Largo

Route

Depart

Return

Price

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Wed 4/9

7:57 pm-10:57 pm

Nonstop3h 00m

Miami

Tue 4/15

5:25 pm-8:18 pm

Nonstop2h 53m

$88

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 4/8

6:11 pm-8:56 pm

Nonstop2h 45m

Miami

Tue 4/15

5:45 am-8:20 am

Nonstop2h 35m

$90

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Sat 4/19

9:18 pm-12:12 am

Nonstop2h 54m

Miami

Wed 4/23

5:45 am-8:20 am

Nonstop2h 35m

$98

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Sat 5/10

7:30 pm-10:15 pm

Nonstop2h 45m

Miami

Sat 5/17

8:00 pm-10:35 pm

Nonstop2h 35m

$167

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 4/8

6:55 pm-12:52 am

1 stop5h 57m

Miami

Wed 4/16

8:10 am-12:59 pm

1 stop4h 49m

$197

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 4/15

6:40 am-1:02 pm

1 stop6h 22m

Miami

Tue 4/15

9:03 pm-11:37 pm

Nonstop2h 34m

$212

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Wed 4/16

7:57 pm-10:57 pm

Nonstop3h 00m

$39

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Wed 4/9

5:42 pm-8:25 pm

Nonstop2h 43m

$52

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 5/27

7:10 pm-9:55 pm

Nonstop2h 45m

$84

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Sat 5/24

6:53 pm-12:37 am

1 stop5h 44m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 12 results
1
2

Best time to book a flight from Baltimore to Key Largo

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

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Key Largo

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

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Key Largo. Price data was last updated on March 21, 2025.

The price you pay for your flight from Baltimore to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 20 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 Baltimore to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Baltimore to Key Largo (average of $229). Flying from Baltimore to Key Largo in March is currently the most expensive (average of $289). 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 BWI to KE9?

Find hourly flight availability from Baltimore 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 March 25, 2025.

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

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

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

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

Weekly flight availability from Baltimore to Key Largo

Explore weekly flight availability from Baltimore 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 March 25, 2025.

The most flights from BWI to KE9 are scheduled on a Sunday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 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 March 25, 2025.
To help decide which airline to fly from Baltimore to Key Largo, see what other customers have to say about Southwest, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
7,878 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Baltimore 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 Baltimore to Key Largo?

    Baltimore/Washington (BWI) is the airport you will fly out of if you book a flight from Baltimore to Key Largo. You should not have trouble finding flights to Key Largo from Baltimore/Washington; the airport handles an average of 7 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Baltimore airport to Key Largo. It is only a 8.5 mi journey to Baltimore/Washington (BWI) from Baltimore’s city center.

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

    Flights from Baltimore/Washington to Key Largo have been viewed 287 times in the past calendar month.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $39. Spirit Airlines flights start at $52 while deals on Southwest start at $84 one-way.

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

    Consider Qatar Airways (93%), Royal Air Maroc (88%) or American Airlines (86%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to Key Largo.

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

    Looking at all options, your cheapest flight can be booked for $35. While the most popular route (Baltimore/Washington - Miami) can be booked for $85 on average our data indicates $643 when flying from Baltimore to Key Largo.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Baltimore to Key Largo (average of $229). Flying from Baltimore to Key Largo in March is currently the most expensive (average of $289). 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

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Top 7 airlines flying from Baltimore to Key Largo

Discover the top 7 airlines that operate flights from Baltimore 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 2,558,603 searches. Data last updated March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$141FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$59Average$162FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$88Average$256FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$375FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$172Average$427FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$182Average$380FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$196Average$388FlexibilityNo cancel feeOn-time63%
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