On this page, you can find and purchase flights from Detroit to San Juan. The distance between the cities is about 3,100 km, and flight frequency is maintained at approximately 7 flights per week.
Flights are operated by airlines such as Delta and Spirit. Ticket prices are constantly adjusted, so we recommend using the price trend chart and the low-fare calendar, as well as checking in advance how to get to the airport in Detroit and how to get from the airport to downtown San Juan.
Below is a calendar of the lowest flight ticket prices for Detroit — San Juan by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $141 in ,, and the most expensive are around $301 in a. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
Detroit → San Juan, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | $309 | high | May | $259 | medium | Sep | $209 | low |
| Feb | $299 | high | Jun | $239 | medium | Oct | $214 | low |
| Mar | $319 | high | Jul | $249 | medium | Nov | $249 | medium |
| Apr | $289 | high | Aug | $219 | low | Dec | $329 | high |
Some values are estimated based on seasonality.
The climate in San Juan remains consistently warm year-round; however, the most comfortable conditions are observed in January and March, when rainfall is minimal. The hottest period falls in August and September, with September being the peak of the rainy season and having the most overcast days.
In terms of budget, the most cost-effective time to plan your trip is in July, when ticket prices start $127. The most expensive month to fly is May, when minimum fares rise to $301.
July is considered the optimal choice for balancing price and weather: despite the summer heat, the flight will be significantly cheaper. We recommend avoiding bookings for September and October unless you are prepared for frequent tropical downpours.
Two main airlines operate on the flight route from Detroit to San Juan — Delta Air Lines and Spirit Airlines — providing a total of about 7 flights weekly. Passengers can choose from options with varying travel durations, with Delta typically offering full service and Spirit specializing in budget travel. A detailed schedule and current carrier offers are presented in the interactive list below.
Flights Detroit — San Juan depart from Detroit Metropolitan Wayne County Airport and arrive at Luis Muñoz Marín International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
The distance between the cities is 3,100 km. The approximate travel time for a direct flight is about 3 hours and 40 minutes, though layovers may increase the total journey duration.
Regular flights between Detroit and San Juan are operated by airlines such as Delta Air Lines and Spirit Airlines.
Yes, direct flights are available on this route. You can check current flight availability for specific dates using the search form on this page.
It is recommended to book tickets in advance, 1–2 months before your trip. To find the best price, use the tools on this page: the low-fare calendar and the price trend chart.
The main destination is San Juan's Luis Muñoz Marín International Airport (SJU).
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