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$594+ Cheap flights from Key Largo, FL to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — EAS
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Find flight deals from Key Largo to San Sebastian

Cheapest flights from Key Largo to San Sebastian
Explore the most affordable flight options available from Key Largo to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This American Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 11/1812:02 pmMIA - EAS
2 stops14h 38mAmerican Airlines
Thu 12/49:20 amEAS - MIA
2 stops17h 43mAmerican Airlines
Deal found 10/31$594
This Iberia deal was found by Cheapflights users on 10/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/183:30 pmMIA - EAS
1 stop11h 10mIberia
Thu 12/49:30 pmEAS - MIA
1 stop29h 15mIberia
Deal found 10/31$774
This American Airlines deal was found by Cheapflights users on 11/1. 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 12/17:00 amMIA - EAS
2 stops24h 00mAmerican Airlines
Fri 12/59:30 pmEAS - MIA
1 stop29h 15mAmerican Airlines
Deal found 11/1$776
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 11/85:20 pmMIA - EAS
1 stop13h 40mAmerican Airlines
Wed 11/129:30 pmEAS - MIA
1 stop29h 15mAmerican Airlines
Deal found 11/1$778
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/412:25 pmMIA - EAS
2 stops19h 05mMultiple Airlines
Thu 11/62:05 pmEAS - MIA
2 stops35h 15mMultiple Airlines
Deal found 10/31$1,083
This eDestinos deal was found by Cheapflights users on 10/31. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:45 pmMIA - EAS
3 stops33h 45mMultiple Airlines
Thu 12/42:05 pmEAS - MIA
2 stops30h 45mMultiple Airlines
Deal found 10/31$1,126
This Orbitz deal was found by Cheapflights users on 10/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:45 amMIA - EAS
2 stops24h 15mIberia
Thu 11/69:20 amEAS - MIA
1 stop17h 25mIberia
Deal found 10/31$1,352

Cheap flight deals from Key Largo to San Sebastian

Keep the following information in mind while searching for Key Largo to San Sebastian flight deals. Data was last updated November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$594
(American Airlines)

Popular in

March

Cheapest in

October

Average price

$674
Provider with most accurate pricing for Miami-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-San Sebastián flights.
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From Key Largo to San Sebastián
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to San Sebastian 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 November 2, 2025.
Use the filters below to find and compare flights from Key Largo to San Sebastian that are best for you.

Fly from

Key Largo

Fly to

San Sebastian

Route

Depart

Return

Price

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Tue 11/18

12:02 pm-8:40 am

2 stops14h 38m

San Sebastián

Thu 12/4

9:20 am-9:03 pm

2 stops17h 43m

$594

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Tue 11/18

3:30 pm-8:40 am

1 stop11h 10m

San Sebastián

Thu 12/4

9:30 pm-8:45 pm

1 stop29h 15m

$774

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Mon 12/1

3:30 pm-8:40 am

1 stop11h 10m

San Sebastián

Fri 12/5

9:30 pm-3:45 pm

1 stop24h 15m

$776

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Tue 11/18

9:45 pm-1:30 pm

3 stops33h 45m

San Sebastián

Thu 12/4

2:05 pm-2:50 pm

2 stops30h 45m

$1,126

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Mon 11/17

2:05 am-8:40 am

2 stops24h 35m

San Sebastián

Thu 12/4

1:40 pm-3:10 am

2 stops19h 30m

$2,312

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

Best time to book a flight from Key Largo to San Sebastian

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

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

Currently, November is the cheapest month in which you can book a flight from Key Largo to San Sebastian (average of $396). Flying from Key Largo to San Sebastian in June is currently the most expensive (average of $698). 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 EAS?

Find hourly flight availability from Key Largo to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

When flying from Key Largo to San Sebastian, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 43% versus a flight in the morning.

How much does it cost to fly round-trip from Key Largo to San Sebastian?

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. 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 San Sebastian. Reviews last updated November 2, 2025.
Read reviews from past customers who have flown American Airlines and Iberia from Key Largo to San Sebastian. 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.
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Comfort

7.2

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
11,033 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Comfort

7.2

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
Iberia
7.0
Good
3,005 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Comfort

7.2

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

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

    Most people fly into San Sebastián (EAS) if they book a flight to San Sebastian from Key Largo. On average, San Sebastián has 0 inbound flights from Key Largo per day from 2 airlines. San Sebastián is conveniently located just 9.7 mi from San Sebastian’s city center.

  • How long is the flight from Key Largo to San Sebastian?

    American Airlines and Iberia can get you from Key Largo to San Sebastian in just under 11h 10m. Your travel time can differ by up to 3h 28m. Airlines will cover a distance of 4459 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 San Sebastian that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to San Sebastian 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 San Sebastian?

    Currently, November is the cheapest month in which you can book a flight from Key Largo to San Sebastian (average of $396). Flying from Key Largo to San Sebastian in June is currently the most expensive (average of $698). 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 2 airlines flying from Key Largo to San Sebastian

Discover the top 2 airlines that operate flights from Key Largo to San Sebastian. 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$567Average$845FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$567Average$752FlexibilityNo cancel feeOn-time71%

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