$53+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — MIA
Sep 23 — Sep 301
Round-trip
1 adult, Economy
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Find cheap flights from Baltimore 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.Cheapflights Tip: The best prices from Baltimore/Washington to Key Largo are usually found in January or October, booked 66 days in advance, depart on a Monday or Saturday and return on a Thursday
Cheap flight deals from Baltimore to Key Largo
Cheapest
Best
Last-minute
One-way
Cheapest flights from Baltimore to Key LargoExplore 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 August 24, 2026.
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 August 24, 2026.
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:48 am -
Nonstop2h 54m
Fri 9/257:23 am -
Nonstop2h 40m
Deal found 8/19![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 8/20. 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.
Sat 9/1910:48 am -
Nonstop2h 54m
Fri 9/257:23 am -
Nonstop2h 40m
Deal found 8/20![Frontier logo]()
$124
This Super.com deal was found by Cheapflights users on 8/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:50 am -
Nonstop2h 43m
Mon 10/267:25 am -
Nonstop2h 40m
Deal found 8/23![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 8/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:54 am -
Nonstop2h 50m
Tue 11/177:25 am -
Nonstop2h 44m
Deal found 8/24![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop9h 24m
Mon 10/57:23 am -
Nonstop2h 40m
Deal found 8/23![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 8/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:54 am -
Nonstop2h 50m
Mon 11/167:25 am -
Nonstop2h 44m
Deal found 8/24![Frontier logo]()
$128
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:48 am -
Nonstop2h 54m
Thu 9/177:23 am -
Nonstop2h 40m
Deal found 8/21![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:48 am -
Nonstop2h 54m
Mon 9/219:30 pm -
1 stop11h 55m
Deal found 8/19![Frontier logo]()
$130
This Booking.com deal was found by Cheapflights users on 8/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:48 am -
Nonstop2h 54m
Sat 10/107:25 am -
Nonstop2h 40m
Deal found 8/23![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Sat 10/310:22 am -
1 stop10h 16m
Mon 10/57:23 am -
Nonstop2h 40m
Deal found 8/21![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:45 pm -
1 stop9h 15m
Sat 10/107:25 am -
Nonstop2h 40m
Deal found 8/19![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:48 am -
Nonstop2h 54m
Mon 10/1210:55 pm -
1 stop10h 32m
Deal found 8/21![Frontier logo]()
$134
Best flights from Baltimore to Key LargoDiscover carefully curated flight deals from Baltimore to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
Discover carefully curated flight deals from Baltimore to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Wed 9/161:45 pm -
2 stops6h 20m
Wed 9/237:10 am -
2 stops6h 05m
Deal found 8/19![Southwest logo]()
$247
This KAYAK deal was found by Cheapflights users on 8/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:20 am -
1 stop6h 47m
Thu 10/293:51 pm -
Nonstop2h 38m
Deal found 8/20![American Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:30 am -
2 stops9h 40m
Thu 10/16:10 pm -
2 stops6h 30m
Deal found 8/19![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:55 am -
2 stops9h 20m
Fri 9/184:50 pm -
1 stop6h 30m
Deal found 8/19![Southwest logo]()
$251
This Southwest deal was found by Cheapflights users on 8/22. 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 9/1212:20 pm -
2 stops7h 00m
Mon 9/147:00 am -
2 stops7h 40m
Deal found 8/22![Southwest logo]()
$289
This Southwest deal was found by Cheapflights users on 8/23. 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.
Fri 10/236:10 pm -
1 stop4h 55m
Mon 10/266:10 pm -
2 stops6h 30m
Deal found 8/23![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 8/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:40 am -
2 stops9h 35m
Wed 11/116:50 am -
2 stops8h 40m
Deal found 8/24![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 8/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:35 pm -
2 stops7h 35m
Tue 11/245:15 am -
1 stop10h 30m
Deal found 8/24![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:30 pm -
1 stop4h 25m
Thu 10/16:10 pm -
2 stops6h 30m
Deal found 8/21![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 8/23. 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.
Mon 11/23:10 pm -
2 stops7h 05m
Fri 11/63:10 pm -
2 stops8h 10m
Deal found 8/23![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 8/22. 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 11/148:40 am -
2 stops9h 35m
Sun 11/227:05 am -
2 stops8h 30m
Deal found 8/22![Southwest logo]()
$337
Last-minute flights from Baltimore to Key LargoDiscover last-minute flight deals from Baltimore to Key Largo. Data last updated August 24, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Key Largo. Data last updated August 24, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 8/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:48 am -
Nonstop2h 54m
Mon 9/147:23 am -
Nonstop2h 40m
Deal found 8/23![Frontier logo]()
$126
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:48 am -
Nonstop2h 54m
Thu 9/177:23 am -
Nonstop2h 40m
Deal found 8/21![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 8/20. 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.
Sat 9/1910:48 am -
Nonstop2h 54m
Fri 9/257:23 am -
Nonstop2h 40m
Deal found 8/20![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:48 am -
Nonstop2h 54m
Thu 9/247:23 am -
Nonstop2h 40m
Deal found 8/21![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:48 am -
Nonstop2h 54m
Mon 9/219:30 pm -
1 stop11h 55m
Deal found 8/19![Frontier logo]()
$130
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:42 pm -
1 stop24h 17m
Sat 9/267:23 am -
Nonstop2h 40m
Deal found 8/19![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Sat 9/1910:48 am -
Nonstop2h 54m
Wed 9/235:32 am -
1 stop11h 14m
Deal found 8/21![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:48 am -
Nonstop2h 54m
Fri 9/257:23 am -
Nonstop2h 40m
Deal found 8/19![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:48 am -
Nonstop2h 54m
Thu 9/245:32 am -
1 stop11h 14m
Deal found 8/23![Frontier logo]()
$135
This Booking.com deal was found by Cheapflights users on 8/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:48 am -
Nonstop2h 54m
Sat 10/107:25 am -
Nonstop2h 40m
Deal found 8/23![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 8/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:48 am -
Nonstop2h 54m
Fri 10/27:23 am -
Nonstop2h 40m
Deal found 8/20![Frontier logo]()
$127
One-way flights from Baltimore to Key LargoSearch for one-way flight options from Baltimore to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
Search for one-way flight options from Baltimore to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
This Super.com deal was found by Cheapflights users on 8/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:50 am -
Nonstop2h 43m
Deal found 8/22![Frontier logo]()
$53
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:50 am -
Nonstop2h 43m
Deal found 8/21![Frontier logo]()
$54
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:48 am -
Nonstop2h 54m
Deal found 8/21![Frontier logo]()
$55
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:54 am -
Nonstop2h 50m
Deal found 8/21![Frontier logo]()
$56
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/610:54 am -
Nonstop2h 50m
Deal found 8/21![Frontier logo]()
$59
This Expedia deal was found by Cheapflights users on 8/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:48 pm -
Nonstop2h 53m
Deal found 8/20![Frontier logo]()
$60
This Super.com deal was found by Cheapflights users on 8/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:50 am -
Nonstop2h 43m
Deal found 8/21![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 8/24. 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.
Mon 9/1410:48 am -
Nonstop2h 54m
Deal found 8/24![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:54 am -
Nonstop2h 50m
Deal found 8/19![Frontier logo]()
$67
This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:48 pm -
Nonstop2h 53m
Deal found 8/20![Frontier logo]()
$70
Find 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 August 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Frontier) |
One-way from | $53 (Super.com) |
Popular in | March |
Cheapest in | January |
Average price | $252 |
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 7,457,451 searches. Data last updated August 24, 2026.
Use the filters below to find and compare flights from Baltimore to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Wed 9/16
1:45 pm-8:05 pm
2 stops6h 20m
Miami
Wed 9/23
7:10 am-1:15 pm
2 stops6h 05m
$247
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Mon 9/28
6:30 am-4:10 pm
2 stops9h 40m
Miami
Thu 10/1
6:10 pm-12:40 am
2 stops6h 30m
$247
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Tue 9/15
10:55 am-8:15 pm
2 stops9h 20m
Miami
Fri 9/18
4:50 pm-11:20 pm
1 stop6h 30m
$251
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Sat 9/12
12:20 pm-7:20 pm
2 stops7h 00m
Miami
Mon 9/14
7:00 am-2:40 pm
2 stops7h 40m
$289
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Fri 10/23
6:10 pm-11:05 pm
1 stop4h 55m
Miami
Mon 10/26
6:10 pm-12:40 am
2 stops6h 30m
$293
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Sat 11/7
8:40 am-6:15 pm
2 stops9h 35m
Miami
Wed 11/11
6:50 am-3:30 pm
2 stops8h 40m
$297
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Tue 11/17
2:35 pm-10:10 pm
2 stops7h 35m
Miami
Tue 11/24
5:15 am-3:45 pm
1 stop10h 30m
$298
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Sun 9/27
6:30 pm-10:55 pm
1 stop4h 25m
Miami
Thu 10/1
6:10 pm-12:40 am
2 stops6h 30m
$298
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Mon 11/2
3:10 pm-10:15 pm
2 stops7h 05m
Miami
Fri 11/6
3:10 pm-11:20 pm
2 stops8h 10m
$307
Quickest round-trip
BaltimoreMiami
BWI Baltimore/Washington - MIA Miami
BWIMIA
Baltimore/Washington
Mon 10/26
6:20 am-1:07 pm
1 stop6h 47m
Miami
Thu 10/29
3:51 pm-6:29 pm
Nonstop2h 38m
$316
Showing 1-10 of 22 resultsSorted by cheapest first
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.
BWI-MIA
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
BWI-KE9
BWI-MIA
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 August 24, 2026.
It’s optimal to fly from Baltimore to Key Largo in the evening. By choosing this option you can save up to 52% on the cost of your flight, compared to a flight in the morning.
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 August 24, 2026.
The most flights from BWI to KE9 are scheduled on a Sunday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Baltimore to Key Largo?
Airfare is below average for this route at the moment.
Baltimore to Key Largo flights typically cost between $154 and $338 in September.The cheapest round-trip price found within the last 5 days was $123 on Frontier (Sep 21-Sep 25).
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 August 22, 2026.
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. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 24, 2026.
See what other customers who have flown with Southwest,Delta, andAmerican 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.
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Related info for your journey
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Baltimore and Key Largo flights
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Top 6 airlines flying from Baltimore to Key Largo
Discover the top 6 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 7,457,451 searches. Data last updated August 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$184 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$285 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$401 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$165 | Average$390 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$168 | Average$285 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$170 | Average$397 | FlexibilityNo cancel fee | On-time63% |