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Key Largo

$42+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — MIA
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to Key Largo are usually found in September or July, booked 16 days in advance, depart on a Monday or Sunday and return on a Sunday

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 November 4, 2025.

This Frontier deal was found by Cheapflights users on 11/2. 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.
Sat 11/85:59 pmBWI - MIA
Nonstop2h 49mFrontier
Sat 11/226:05 amMIA - BWI
Nonstop2h 45mFrontier
Deal found 11/2$83
This CheapOair deal was found by Cheapflights users on 11/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:51 pmBWI - MIA
Nonstop2h 55mFrontier
Wed 12/103:13 pmMIA - BWI
1 stop9h 11mFrontier
Deal found 11/3$84
This Flightnetwork deal was found by Cheapflights users on 11/4. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:52 pmBWI - MIA
Nonstop2h 55mFrontier
Mon 12/87:00 amMIA - BWI
1 stop7h 06mFrontier
Deal found 11/4$85
This CheapOair deal was found by Cheapflights users on 11/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:59 pmBWI - MIA
Nonstop2h 49mFrontier
Sat 11/152:20 pmMIA - BWI
Nonstop2h 42mFrontier
Deal found 11/4$86
This Frontier deal was found by Cheapflights users on 11/2. 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.
Sun 11/93:00 pmBWI - MIA
Nonstop2h 48mFrontier
Thu 11/1311:31 amMIA - BWI
Nonstop2h 44mFrontier
Deal found 11/2$87
This Frontier deal was found by Cheapflights users on 11/2. 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.
Sat 11/85:59 pmBWI - MIA
Nonstop2h 49mFrontier
Thu 11/1311:31 amMIA - BWI
Nonstop2h 44mFrontier
Deal found 11/2$88
This CheapOair deal was found by Cheapflights users on 11/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:52 pmBWI - MIA
Nonstop2h 55mFrontier
Fri 12/199:42 pmMIA - BWI
Nonstop2h 51mFrontier
Deal found 11/4$90
This WAYA deal was found by Cheapflights users on 11/2. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:29 pmBWI - MIA
1 stop5h 11mMultiple Airlines
Mon 11/242:05 pmMIA - BWI
Nonstop2h 41mMultiple Airlines
Deal found 11/2$91
This Priceline deal was found by Cheapflights users on 11/2. 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 12/68:30 pmBWI - MIA
1 stop11h 53mMultiple Airlines
Fri 12/127:00 amMIA - BWI
Nonstop2h 45mMultiple Airlines
Deal found 11/2$92
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Sat 11/155:59 pmBWI - MIA
Nonstop2h 49mMultiple Airlines
Sat 11/224:09 pmMIA - BWI
1 stop7h 10mMultiple Airlines
Deal found 11/4$93
This CheapOair deal was found by Cheapflights users on 11/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:43 pmBWI - MIA
Nonstop2h 49mFrontier
Wed 12/33:13 pmMIA - BWI
1 stop9h 11mFrontier
Deal found 11/3$94
This FlightHub deal was found by Cheapflights users on 11/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:51 pmBWI - MIA
Nonstop2h 55mFrontier
Mon 12/157:00 amMIA - BWI
1 stop7h 06mFrontier
Deal found 11/3$95

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 November 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$84
(CheapOair)

One-way from

$42
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$261
Provider with most accurate pricing for Washington, D.C. (WAS)-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Miami flights.
Search Deals
From Baltimore/Washington to Key Largo
Search Deals
One-way flight from Baltimore/Washington to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 4, 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

Mon 12/8

1:25 pm-4:10 pm

Nonstop2h 45m

Miami

Sun 12/14

6:20 am-12:25 pm

1 stop6h 05m

$119

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Wed 12/10

3:55 pm-9:50 pm

1 stop5h 55m

Miami

Tue 12/16

7:10 am-9:45 am

Nonstop2h 35m

$124

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 1/20

8:25 am-11:20 am

Nonstop2h 55m

Miami

Sat 1/31

6:45 am-11:35 am

1 stop4h 50m

$124

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Mon 2/2

1:25 pm-4:10 pm

Nonstop2h 45m

Miami

Sat 2/7

7:00 am-9:40 am

Nonstop2h 40m

$137

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 1/6

8:25 am-11:20 am

Nonstop2h 55m

Miami

Tue 1/13

4:30 pm-7:05 pm

Nonstop2h 35m

$137

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Wed 12/3

6:00 pm-8:45 pm

Nonstop2h 45m

Miami

Tue 12/9

7:10 am-9:45 am

Nonstop2h 35m

$170

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Fri 12/5

6:00 pm-8:45 pm

Nonstop2h 45m

Miami

Wed 12/10

7:10 am-9:45 am

Nonstop2h 35m

$170

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 12/9

6:00 pm-8:45 pm

Nonstop2h 45m

Miami

Mon 12/15

7:40 am-1:55 pm

1 stop6h 15m

$180

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Thu 12/4

6:21 pm-12:46 am

1 stop6h 25m

Miami

Wed 12/10

6:00 am-11:11 am

1 stop5h 11m

$197

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Tue 12/2

12:19 pm-6:25 pm

1 stop6h 06m

Miami

Sat 12/6

8:05 am-12:46 pm

1 stop4h 41m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 20 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 October 31, 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 16 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, March is the cheapest month in which you can book a flight from Baltimore to Key Largo (average of $43). Flying from Baltimore to Key Largo in July is currently the most expensive (average of $89). 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 November 4, 2025.

It’s optimal to fly from Baltimore to Key Largo in the evening. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.

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 Monday afternoons when fares are most often at their lowest. Sunday at noon 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 November 4, 2025.

The most flights from BWI to KE9 are scheduled on a Tuesday (7 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Baltimore to Key Largo?

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 November 4, 2025.
See what other customers who have flown with Southwest, Delta, and American Airlines from Baltimore to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,239 reviews
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,003 reviews
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,040 reviews
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,113 reviews
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,117 reviews
Southwest
8.0
Very good
4,239 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 4 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 241 times in the past calendar month.

  • How long is the flight from Baltimore to Key Largo?

    Airlines like Southwest fly from Baltimore to Key Largo in about 2h 45m. The time it takes to get you to your destination is usually consistent. The distance between Baltimore and Key Largo is about 947 mi. Most flights are nonstop.

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

    Consider Royal Air Maroc (100%), Frontier (97%) or Qatar Airways (93%) 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 $34. While the most popular route (Baltimore/Washington - Miami) can be booked for $58 on average, our data indicates $735 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, March is the cheapest month in which you can book a flight from Baltimore to Key Largo (average of $43). Flying from Baltimore to Key Largo in July is currently the most expensive (average of $89). 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$161FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$74Average$205FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$95Average$236FlexibilityNo cancel feeOn-time62%
DeltaCheapest$147Average$404FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$161Average$395FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$162Average$364FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$167Average$398FlexibilityNo cancel feeOn-time71%

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