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$229+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SOF
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Sofia are usually found in November or February, booked 52 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 July 31, 2025.

Round-trip from

$608
(American Airlines)

One-way from

$229
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$995
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. 25% potential increase in price ($285 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 July 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 July 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/29. 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 9/2410:15 pmMIA - SOF
1 stop33h 30mTurkish Airlines
Thu 10/23:35 pmSOF - MIA
1 stop35h 45mTurkish Airlines
Deal found 7/29$609
This Expedia deal was found by Cheapflights users on 7/30. 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.
Tue 12/309:05 pmMIA - SOF
2 stops33h 50mAir Canada
Tue 1/136:00 amSOF - MIA
2 stops23h 29mAir Canada
Deal found 7/30$612
This United Airlines deal was found by Cheapflights users on 7/28. 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 10/211:26 pmMIA - SOF
2 stops15h 34mUnited Airlines
Wed 11/56:15 amSOF - MIA
2 stops23h 49mUnited Airlines
Deal found 7/28$616
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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.
Wed 10/2912:39 pmMIA - SOF
2 stops23h 41mLufthansa
Wed 11/126:15 amSOF - MIA
1 stop15h 25mLufthansa
Deal found 7/31$620
This SWISS deal was found by Cheapflights users on 7/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:40 pmMIA - SOF
2 stops33h 20mSWISS
Mon 11/33:00 pmSOF - MIA
1 stop33h 30mSWISS
Deal found 7/28$629
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/225:15 pmMIA - SOF
1 stop22h 10mMultiple Airlines
Mon 10/68:50 amSOF - MIA
2 stops36h 52mMultiple Airlines
Deal found 7/31$630
This American Airlines deal was found by Cheapflights users on 7/31. 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 12/19:38 pmMIA - SOF
2 stops39h 32mAmerican Airlines
Mon 12/155:25 pmSOF - MIA
2 stops32h 39mAmerican Airlines
Deal found 7/31$640
This Travelocity deal was found by Cheapflights users on 7/31. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/110:46 pmMIA - SOF
2 stops35h 34mBritish Airways
Sat 11/1512:05 pmSOF - MIA
2 stops28h 36mBritish Airways
Deal found 7/31$670
This Austrian Airlines deal was found by Cheapflights users on 7/28. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/214:40 pmMIA - SOF
2 stops15h 40mAustrian Airlines
Sun 11/26:45 pmSOF - MIA
2 stops50h 55mAustrian Airlines
Deal found 7/28$682

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 July 31, 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

Mon 1/26

9:45 pm-8:10 pm

2 stops39h 25m

Sofia

Mon 2/9

5:25 pm-3:20 pm

2 stops28h 55m

$608

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 9/24

10:15 pm-2:45 pm

1 stop33h 30m

Sofia

Thu 10/2

3:35 pm-8:20 pm

1 stop35h 45m

$609

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 12/30

9:05 pm-1:55 pm

2 stops33h 50m

Sofia

Tue 1/13

6:00 am-10:29 pm

2 stops23h 29m

$612

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 10/21

1:26 pm-12:00 pm

2 stops15h 34m

Sofia

Wed 11/5

6:15 am-11:04 pm

2 stops23h 49m

$616

MiamiSofia

MIA - SOF

MIASOF

Miami

Wed 10/29

12:39 pm-6:20 pm

2 stops23h 41m

Sofia

Wed 11/12

6:15 am-2:40 pm

1 stop15h 25m

$620

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 10/21

7:40 pm-12:00 pm

2 stops33h 20m

Sofia

Mon 11/3

3:00 pm-5:30 pm

1 stop33h 30m

$629

MiamiSofia

MIA - SOF

MIASOF

Miami

Mon 9/22

5:15 pm-10:25 pm

1 stop22h 10m

Sofia

Mon 10/6

8:50 am-2:42 pm

2 stops36h 52m

$630

MiamiSofia

MIA - SOF

MIASOF

Miami

Tue 1/27

4:40 pm-6:00 pm

2 stops18h 20m

Sofia

Tue 2/10

7:55 am-6:35 pm

2 stops17h 40m

$652

MiamiSofia

MIA - SOF

MIASOF

Miami

Sat 11/1

10:46 pm-4:20 pm

2 stops35h 34m

Sofia

Sat 11/15

12:05 pm-9:41 am

2 stops28h 36m

$670

MiamiSofia

MIA - SOF

MIASOF

Miami

Mon 8/18

5:15 pm-11:10 pm

2 stops22h 55m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 results
1
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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 July 25, 2025.

The best time to book flights from Key Largo to Sofia is 52 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 $1,187). 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 July 31, 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 July 31, 2025.
Read reviews from past customers who have flown LOT, Austrian Airlines, and United 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.
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.
LOT
7.6
Good
1,105 reviews
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.
Austrian Airlines
7.6
Good
823 reviews
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.
United Airlines
7.4
Good
8,900 reviews
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.
Turkish Airlines
7.3
Good
3,933 reviews
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.
American Airlines
7.2
Good
10,000 reviews
LOT
7.6
Good
1,105 reviews

Entertainment

7.0

Comfort

7.5

Boarding

7.6

Food

7.2

Overall

7.6

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Tomasz,Jan 2025

JFK - WAW

The food this time was delicious. Pasta meal with mushroom sauce, cobb salad, and real metal utensils.

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.

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

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $405. TAP AIR PORTUGAL flights start at $472 while deals on Air Canada start at $497 one-way.

  • 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 $1,187). 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$528Average$766FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$614Average$1,039FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$634Average$887FlexibilityNo cancel feeOn-time77%
SWISSCheapest$653Average$964FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$657Average$1,015FlexibilityNo cancel feeOn-time69%
LOTCheapest$662Average$1,093FlexibilityNo cancel feeOn-time81%

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