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$262+ Cheap flights from Key Largo, FL to Bulgaria

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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SOF
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Key Largo to Bulgaria

Keep the following information in mind while searching for Key Largo to Bulgaria flight deals. Data was last updated September 17, 2025.

Round-trip from

$517
(Kiwi.com)

One-way from

$262
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$675
From Key Largo to Bulgaria
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One-way flight from Key Largo to Bulgaria
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Highest demand for flights based on searches. 26% potential increase in price ($292 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Key Largo to Bulgaria

Cheapest flights from Key Largo to Bulgaria
Explore the most affordable flight options available from Key Largo to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Wed 11/57:50 pmMIA - SOF
1 stop12h 25mMultiple Airlines
Wed 11/196:10 amSOF - MIA
1 stop15h 30mMultiple Airlines
Deal found 9/16$517
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/44:35 pmMIA - SOF
2 stops20h 30mMultiple Airlines
Tue 11/184:45 pmSOF - MIA
1 stop34h 15mMultiple Airlines
Deal found 9/15$540
This FlightHub deal was found by Cheapflights users on 9/16. 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 11/37:35 pmMIA - SOF
1 stop15h 15mLOT
Fri 11/146:35 pmSOF - MIA
1 stop32h 35mLOT
Deal found 9/16$542
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 11/46:45 pmMIA - SOF
1 stop16h 35mLufthansa
Tue 11/186:00 amSOF - MIA
1 stop15h 40mLufthansa
Deal found 9/15$546
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 11/87:05 pmMIA - SOF
2 stops48h 50mMultiple Airlines
Sat 11/224:45 pmSOF - MIA
1 stop34h 15mMultiple Airlines
Deal found 9/16$550
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/46:45 pmMIA - SOF
1 stop16h 35mUnited Airlines
Tue 11/186:00 amSOF - MIA
1 stop15h 40mUnited Airlines
Deal found 9/15$551
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 10/1410:15 pmMIA - SOF
1 stop27h 20mTurkish Airlines
Tue 10/219:15 pmSOF - MIA
1 stop30h 05mTurkish Airlines
Deal found 9/14$552
This United deal was found by Cheapflights users on 9/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:23 pmMIA - SOF
2 stops17h 52mMultiple Airlines
Fri 11/146:10 amSOF - MIA
2 stops23h 19mMultiple Airlines
Deal found 9/16$555
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Wed 10/1510:35 amMIA - SOF
1 stop26h 50mTurkish Airlines
Wed 10/229:15 pmSOF - MIA
1 stop30h 05mTurkish Airlines
Deal found 9/17$561

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Bulgaria 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 September 17, 2025.
Use the filters below to find and compare flights from Key Largo to Bulgaria that are best for you.

Fly from

Key Largo

Fly to

Bulgaria

Route

Depart

Return

Price

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 11/5

7:50 pm-3:15 pm

1 stop12h 25m

Sofia

Wed 11/19

6:10 am-2:40 pm

1 stop15h 30m

$517

MiamiSofia

MIA - SOF

MIASOF

Miami

Sun 1/18

5:10 pm-4:20 pm

1 stop16h 10m

Sofia

Mon 2/2

5:25 pm-7:30 pm

1 stop33h 05m

$549

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 11/4

6:45 pm-6:20 pm

1 stop16h 35m

Sofia

Tue 11/18

6:00 am-2:40 pm

1 stop15h 40m

$551

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 11/5

6:45 pm-6:20 pm

1 stop16h 35m

Sofia

Wed 11/19

6:10 am-2:40 pm

1 stop15h 30m

$551

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 1/13

2:32 pm-6:20 pm

2 stops20h 48m

Sofia

Tue 1/27

6:00 am-2:40 pm

1 stop15h 40m

$552

MiamiSofia

MIA - SOF

MIASOF

Miami

Mon 1/19

6:45 pm-10:45 pm

1 stop21h 00m

Sofia

Fri 1/30

6:10 am-2:40 pm

1 stop15h 30m

$553

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 1/13

8:00 am-1:45 pm

2 stops22h 45m

Sofia

Tue 1/27

6:00 am-10:29 pm

2 stops23h 29m

$556

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 1/14

1:45 pm-1:15 pm

2 stops16h 30m

Sofia

Wed 1/28

6:10 am-2:40 pm

1 stop15h 30m

$558

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 1/13

1:45 pm-1:15 pm

2 stops16h 30m

Sofia

Tue 1/27

6:00 am-2:40 pm

1 stop15h 40m

$558

MiamiVarna

MIA - VAR

MIAVAR

Miami

Mon 2/2

4:40 pm-3:15 pm

2 stops39h 35m

Varna

Tue 2/10

4:00 pm-4:55 pm

2 stops31h 55m

$631

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Key Largo to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria 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.

Cheapflights Insights

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

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

Currently, November is the cheapest month in which you can book a flight from Key Largo to Bulgaria (average of $632). Flying from Key Largo to Bulgaria in June is currently the most expensive (average of $1,183). 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 BG?

Find hourly flight availability from Key Largo to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

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

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with SWISS, United Airlines, and Turkish Airlines from Key Largo to Bulgaria to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.
SWISS
7.6
Good
1,737 reviews
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.
United Airlines
7.4
Good
8,926 reviews
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.
Turkish Airlines
7.3
Good
3,965 reviews
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.
Lufthansa
6.8
Okay
7,409 reviews
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.
British Airways
6.7
Okay
7,367 reviews
SWISS
7.6
Good
1,737 reviews

Entertainment

6.8

Food

7.1

Overall

7.6

Comfort

7.4

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

AMS - ZRH

Efficient, professional on board attendants. Food offering just right. On time.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    British Airways, United Airlines, and Lufthansa can get you from Key Largo to Bulgaria in just under 16h 10m. Your travel time can differ by up to 23h 25m. Airlines will cover a distance of 5665 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Key Largo to Bulgaria?

    The most popular route from Key Largo to Bulgaria is Miami - Sofia. You may also consider Miami - Varna or Miami - Bourgas.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Key Largo to Bulgaria (average of $632). Flying from Key Largo to Bulgaria in June is currently the most expensive (average of $1,183). 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 6 airlines flying from Key Largo to Bulgaria

Discover the top 6 airlines that operate flights from Key Largo to Bulgaria. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$483Average$845FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$630Average$766FlexibilityNo cancel feeOn-time70%
SWISSCheapest$653Average$1,204FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$657Average$1,002FlexibilityNo cancel feeOn-time69%
LOTCheapest$662Average$1,128FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$665Average$1,074FlexibilityNo cancel feeOn-time76%

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