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$402+ Cheap flights from Key Largo, FL to Seoul (SEL)

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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SEL
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Seoul are usually found in January or October, booked 62 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap flight deals from Key Largo to Seoul

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

Round-trip from

$826
(Delta)

One-way from

$402
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$1,096
From Key Largo to Seoul (SEL)
Search Deals
One-way flight from Key Largo to Seoul (SEL)
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Highest demand for flights based on searches. 11% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 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 Seoul

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

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/157:38 pmMIA - ICN
1 stop19h 22mDelta
mar. 9/234:25 pmICN - MIA
1 stop17h 58mDelta
Deal found 9/15$826
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/279:49 amMIA - ICN
1 stop30h 51mMultiple Airlines
dom. 11/29:20 pmICN - MIA
2 stops41h 14mMultiple Airlines
Deal found 9/17$828
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/156:00 amMIA - ICN
2 stops22h 20mDelta
lun. 9/227:20 pmICN - MIA
2 stops24h 05mDelta
Deal found 9/14$831
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/172:20 pmMIA - ICN
2 stops36h 45mAir Canada
mar. 9/305:45 pmICN - MIA
2 stops32h 35mAir Canada
Deal found 9/15$868
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/272:20 pmMIA - ICN
2 stops36h 45mAir Canada
jue. 10/305:55 pmICN - MIA
2 stops31h 04mAir Canada
Deal found 9/15$873
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/279:49 amMIA - ICN
1 stop30h 51mMultiple Airlines
lun. 11/36:55 pmICN - MIA
2 stops32h 33mMultiple Airlines
Deal found 9/17$889
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/232:20 pmMIA - ICN
2 stops36h 45mAir Canada
dom. 10/57:05 pmICN - MIA
1 stop28h 53mAir Canada
Deal found 9/17$894
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.
lun. 10/138:00 amMIA - ICN
2 stops31h 50mMultiple Airlines
lun. 10/209:30 pmICN - MIA
1 stop38h 40mMultiple Airlines
Deal found 9/15$900
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/27:20 amMIA - GMP
2 stops24h 45mJapan Airlines
mié. 12/108:00 amGMP - MIA
2 stops28h 05mJapan Airlines
Deal found 9/16$1,045
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/247:20 amMIA - GMP
2 stops24h 45mJapan Airlines
sáb. 2/218:00 amGMP - MIA
2 stops26h 35mJapan Airlines
Deal found 9/14$1,069
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/239:26 pmMIA - GMP
2 stops31h 34mJapan Airlines
mar. 10/712:05 pmGMP - MIA
2 stops21h 50mJapan Airlines
Deal found 9/14$1,091
This Japan 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/159:26 pmMIA - GMP
2 stops24h 19mMultiple Airlines
lun. 9/2212:05 pmGMP - MIA
2 stops22h 45mMultiple Airlines
Deal found 9/14$1,096

Cheapflights Fare Finder

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

Fly from

Key Largo

Fly to

Seoul

Route

Depart

Return

Price

MiamiIncheon

MIA - ICN

MIAICN

Miami

sáb. 9/27

6:00 am-2:10 pm

1 stop19h 10m

Incheon Intl

jue. 10/30

7:25 pm-12:29 am

1 stop18h 04m

$826

MiamiIncheon

MIA - ICN

MIAICN

Miami

jue. 10/30

8:30 am-4:50 pm

1 stop19h 20m

Incheon Intl

jue. 11/6

6:00 pm-12:29 am

1 stop20h 29m

$826

MiamiIncheon

MIA - ICN

MIAICN

Miami

vie. 10/24

6:00 am-2:10 pm

1 stop19h 10m

Incheon Intl

vie. 10/31

7:25 pm-12:29 am

1 stop18h 04m

$826

MiamiIncheon

MIA - ICN

MIAICN

Miami

jue. 10/23

8:30 am-4:25 pm

1 stop18h 55m

Incheon Intl

lun. 10/27

7:25 pm-12:29 am

1 stop18h 04m

$826

MiamiIncheon

MIA - ICN

MIAICN

Miami

mié. 10/1

7:38 pm-4:00 am

1 stop19h 22m

Incheon Intl

sáb. 10/11

4:25 pm-12:29 am

1 stop21h 04m

$944

MiamiIncheon

MIA - ICN

MIAICN

Miami

mié. 10/15

8:30 am-4:25 pm

1 stop18h 55m

Incheon Intl

vie. 10/31

7:25 pm-12:29 am

1 stop18h 04m

$944

MiamiIncheon

MIA - ICN

MIAICN

Miami

mié. 10/1

10:28 am-4:00 am

1 stop28h 32m

Incheon Intl

dom. 10/5

4:25 pm-9:23 pm

1 stop17h 58m

$944

MiamiIncheon

MIA - ICN

MIAICN

Miami

sáb. 10/18

6:58 pm-5:20 pm

1 stop33h 22m

Incheon Intl

mié. 10/22

4:25 pm-8:51 pm

1 stop17h 26m

$949

MiamiIncheon

MIA - ICN

MIAICN

Miami

mar. 10/14

7:10 am-4:00 am

1 stop31h 50m

Incheon Intl

mar. 10/21

6:50 pm-12:29 am

1 stop18h 39m

$951

MiamiIncheon

MIA - ICN

MIAICN

Miami

vie. 10/31

8:00 am-4:40 am

2 stops31h 40m

Incheon Intl

sáb. 11/15

12:45 pm-10:53 am

2 stops36h 08m

$966

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 40 results
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Best time to book a flight from Key Largo to Seoul

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

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

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

The price you pay for your flight from Key Largo to Seoul may vary depending on when you book. For the best chance of a lower fare, look to book 62 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 Key Largo to Seoul?

Currently, February is the cheapest month in which you can book a flight from Key Largo to Seoul (average of $989). Flying from Key Largo to Seoul in December is currently the most expensive (average of $1,621). 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 SEL?

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

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

What is the cheapest day to fly from Key Largo to Seoul?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Seoul. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Seoul flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated septiembre 17, 2025.
See what other customers who have flown with Korean Air, Delta, and United Airlines from Key Largo to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,961 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
8,926 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

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

    Delta and Japan Airlines can get you from Key Largo to Seoul in just under 19h 10m. Your travel time can differ by up to 5h 35m. Key Largo and Seoul are separated by a distance of 7729 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Seoul (average of $989). Flying from Key Largo to Seoul in December is currently the most expensive (average of $1,621). 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 5 airlines flying from Key Largo to Seoul

Discover the top 5 airlines that operate flights from Key Largo to Seoul. 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$660Average$1,644FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$789Average$1,163FlexibilityNo cancel feeOn-time67%
DeltaCheapest$826Average$1,373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$856Average$1,345FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,052Average$1,493FlexibilityNo cancel feeOn-time81%

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