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Keflavik Intl

Cheap flights from Luis Munoz Marin Intl (SJU) to Keflavik Intl (KEF)

SJU — KEF
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Luis Munoz Marin Intl to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated agosto 14, 2025.

Popular in

December

Cheapest in

February

Average price

$1,022
Highest demand for flights based on searches. 6% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Best time to book a flight from Luis Munoz Marin Intl to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport

What is the cheapest time of day to fly from SJU to KEF?

Find hourly flight availability from Luis Munoz Marin Intl to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

One of the essential ways to save on airfare from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 30% on airfare.

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated agosto 14, 2025.
Peruse reviews from past customers who have flown with United Airlines and Icelandair from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Icelandair
7.0
Good
526 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport round-trip?

    Currently priced at $632, United Airlines will fly you from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Icelandair for as low as $867. United Airlines is currently priced 29% below the average price you’ll pay for this route.

  • Can I find deals for flights from Luis Munoz Marin Intl to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to Keflavik Intl.

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Keflavik Intl 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 San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport (average of $328). Flying from San Juan Luis Munoz Marin Intl Airport to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $655). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top 2 airlines flying from Luis Munoz Marin Intl to Keflavik Intl

Discover the top 2 airlines that operate flights from Luis Munoz Marin Intl to Keflavik Intl. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$632Average$899FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$867Average$1,029FlexibilityNo cancel feeOn-time76%

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