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$578+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — EAS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$578
(American Airlines)

Popular in

March

Cheapest in

October

Average price

$675
From Key Largo to San Sebastián
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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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 September 15, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/133:15 pmMIA - EAS
1 stop11h 25mAmerican Airlines
Fri 10/319:20 amEAS - MIA
2 stops17h 26mAmerican Airlines
Deal found 9/13$578
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:45 pmMIA - EAS
1 stop17h 05mMultiple Airlines
Sun 11/169:20 amEAS - MIA
1 stop16h 10mMultiple Airlines
Deal found 9/14$666
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:00 pmMIA - EAS
1 stop11h 40mIberia
Tue 10/149:30 pmEAS - MIA
2 stops28h 56mIberia
Deal found 9/14$668
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:55 pmMIA - EAS
1 stop16h 55mIberia
Fri 10/319:20 amEAS - MIA
1 stop17h 25mIberia
Deal found 9/14$685
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:19 pmMIA - EAS
2 stops26h 31mIberia
Sun 11/169:20 amEAS - MIA
2 stops31h 34mIberia
Deal found 9/14$737
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:30 pmMIA - EAS
1 stop11h 10mAmerican Airlines
Wed 11/129:30 pmEAS - MIA
1 stop22h 15mAmerican Airlines
Deal found 9/13$767

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 September 15, 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

Mon 10/13

3:15 pm-8:40 am

1 stop11h 25m

San Sebastián

Fri 10/31

9:20 am-9:46 pm

2 stops17h 26m

$578

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Fri 10/31

10:45 pm-8:50 pm

1 stop17h 05m

San Sebastián

Sun 11/16

9:20 am-7:30 pm

1 stop16h 10m

$666

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Tue 9/30

3:00 pm-8:40 am

1 stop11h 40m

San Sebastián

Tue 10/14

9:30 pm-8:26 pm

2 stops28h 56m

$668

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Mon 10/13

9:55 pm-8:50 pm

1 stop16h 55m

San Sebastián

Fri 10/31

9:20 am-9:45 pm

1 stop17h 25m

$685

MiamiSan Sebastian

MIA - EAS

MIAEAS

Miami

Sat 11/8

3:30 pm-8:40 am

1 stop11h 10m

San Sebastián

Wed 11/12

9:30 pm-1:45 pm

1 stop22h 15m

$767

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to San Sebastian as you normally would.

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 September 15, 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
10,000 reviews

Crew

8.0

Food

6.4

Comfort

7.2

Entertainment

6.9

Overall

7.2

Boarding

7.5

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
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Food

6.4

Comfort

7.2

Entertainment

6.9

Overall

7.2

Boarding

7.5

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
2,924 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Food

6.4

Comfort

7.2

Entertainment

6.9

Overall

7.2

Boarding

7.5

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 25m. Your travel time can differ by up to 15m. 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.

See more FAQs

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$567Average$837FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$577Average$806FlexibilityNo cancel feeOn-time71%

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