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$240+ Cheap flights from Key Largo, FL to Sofia (SOF)

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SOF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Sofia are usually found in November or September, booked 46 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

Cheap flight deals from Key Largo to Sofia

Keep the following information in mind while searching for Key Largo to Sofia flight deals. Data was last updated September 15, 2025.

Round-trip from

$530
(Kiwi.com)

One-way from

$240
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$675
From Key Largo to Sofia
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One-way flight from Key Largo to Sofia
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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 Sofia

Cheapest flights from Key Largo to Sofia
Explore the most affordable flight options available from Key Largo to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip 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
2 stops23h 19mMultiple Airlines
Deal found 9/13$530
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 9/13. 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.
Sun 11/27:35 pmMIA - SOF
1 stop35h 15mLOT
Sun 11/166:35 pmSOF - MIA
1 stop30h 00mLOT
Deal found 9/13$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 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 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.
Wed 10/1510:15 pmMIA - SOF
1 stop15h 10mTurkish Airlines
Wed 10/2910:05 amSOF - MIA
1 stop17h 30mTurkish Airlines
Deal found 9/14$561
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:38 pmMIA - SOF
2 stops39h 32mAmerican Airlines
Mon 11/175:25 pmSOF - MIA
1 stop29h 45mAmerican Airlines
Deal found 9/14$562

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Sofia 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 15, 2025.
Use the filters below to find and compare flights from Key Largo to Sofia that are best for you.

Fly from

Key Largo

Fly to

Sofia

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-10:29 pm

2 stops23h 19m

$530

MiamiSofia

MIA - SOF

MIASOF

Miami

Mon 1/12

7:35 pm-5:50 pm

1 stop15h 15m

Sofia

Mon 1/26

6:35 pm-8:10 pm

1 stop32h 35m

$542

MiamiSofia

MIA - SOF

MIASOF

Miami

Sun 11/2

7:35 pm-1:50 pm

1 stop35h 15m

Sofia

Sun 11/16

6:35 pm-5:35 pm

1 stop30h 00m

$542

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 1/14

8:00 am-3:15 pm

2 stops24h 15m

Sofia

Wed 1/28

6:10 am-11:59 am

2 stops36h 49m

$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

Thu 3/12

11:30 pm-3:10 pm

1 stop33h 40m

Sofia

Thu 3/26

10:05 am-8:00 am

1 stop27h 55m

$552

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

Tue 2/10

6:45 pm-6:20 pm

1 stop16h 35m

Sofia

Tue 2/24

6:00 am-5:29 pm

2 stops18h 29m

$552

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 2/18

6:45 pm-10:45 pm

1 stop21h 00m

Sofia

Tue 2/24

6:00 am-2:40 pm

1 stop15h 40m

$553

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 2/18

6:45 pm-10:45 pm

1 stop21h 00m

Sofia

Wed 2/25

6:10 am-2:40 pm

1 stop15h 30m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 results
1
2

Best time to book a flight from Key Largo to Sofia

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Sofia. Price data was last updated on September 12, 2025.

The best time to book flights from Key Largo to Sofia is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Key Largo to Sofia (average of $632). Flying from Key Largo to Sofia in June is currently the most expensive (average of $1,185). 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 SOF?

Find hourly flight availability from Key Largo to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Key Largo to Sofia, 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 Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated September 15, 2025.
Read reviews from past customers who have flown SWISS, United Airlines, and Turkish Airlines from Key Largo to Sofia. 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.
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
SWISS
7.5
Good
1,730 reviews
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
United Airlines
7.4
Good
8,929 reviews
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
Turkish Airlines
7.3
Good
3,968 reviews
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
Lufthansa
6.8
Okay
7,407 reviews
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.
British Airways
6.7
Okay
7,361 reviews
SWISS
7.5
Good
1,730 reviews

Crew

8.2

Boarding

7.7

Food

7.1

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
6.0
Good

Madhukar,Nov 2024

ZRH - BOM

Indian Veg food selection and quality definitely needs a better chef.

Related info for your journey

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

    For a flight from Key Largo to Sofia, you will be flying into Sofia. Sofia (SOF) is just 4.2 mi from the center of the city. Sofia is the only Sofia airport and it handles 0 inbound flights from Key Largo per day. 6 airlines have flights to Sofia from Key Largo on a regular basis.

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

    For as low as $542, LOT can have you in Sofia from Key Largo in 15h 15m. Key Largo and Sofia are separated by a distance of 5665 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Key Largo to Sofia (average of $632). Flying from Key Largo to Sofia in June is currently the most expensive (average of $1,185). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Key Largo to Sofia

Discover the top 6 airlines that operate flights from Key Largo to Sofia. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$608Average$892FlexibilityNo 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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