$70 Cheap Flights from Detroit (DTW) to San Juan (SJU)

View $70 flight on Sun, Sep 28, 2025Opens in a new window

Popular airlines from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)

Cheap Flights from Detroit to San Juan (DTW-SJU)

Prices were available within the past 7 days and start at $70 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Sun, Sep 28 - Thu, Oct 2
DTW
Detroit
SJU
San Juan
$140 Roundtrip, just found
$140
Roundtrip
just found
Select Spirit Airlines flight, departing Sun, Sep 28 from Detroit to San Juan, returning Thu, Oct 2, priced at $140 just found
Spirit Airlines
Sat, Nov 15 - Sat, Nov 22
DTW
Detroit
SJU
San Juan
$155 Roundtrip, just found
$155
Roundtrip
just found
Select Spirit Airlines flight, departing Sat, Nov 15 from Detroit to San Juan, returning Sat, Nov 22, priced at $155 just found
Spirit Airlines
Wed, Sep 24 - Thu, Sep 25
DTW
Detroit
SJU
San Juan
$164 Roundtrip, just found
$164
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Sep 24 from Detroit to San Juan, returning Thu, Sep 25, priced at $164 just found
Spirit Airlines
Mon, Dec 8 - Tue, Dec 9
DTW
Detroit
SJU
San Juan
$170 Roundtrip, just found
$170
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Dec 8 from Detroit to San Juan, returning Tue, Dec 9, priced at $170 just found
Southwest Airlines
Sat, Oct 25 - Fri, Nov 7
DTW
Detroit
SJU
San Juan
$170 Roundtrip, found 8 hours ago
$170
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Sat, Oct 25 from Detroit to San Juan, returning Fri, Nov 7, priced at $170 found 8 hours ago
Southwest Airlines
Tue, Oct 28 - Fri, Nov 7
DTW
Detroit
SJU
San Juan
$171 Roundtrip, found 5 hours ago
$171
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Detroit to San Juan, returning Fri, Nov 7, priced at $171 found 5 hours ago
Spirit Airlines
Sun, Sep 28 - Thu, Oct 2
DTW
Detroit
SJU
San Juan
$173 Roundtrip, just found
$173
Roundtrip
just found
Select Spirit Airlines flight, departing Sun, Sep 28 from Detroit to San Juan, returning Thu, Oct 2, priced at $173 just found
Delta
Mon, Nov 3 - Fri, Nov 7
DTW
Detroit
SJU
San Juan
$173 Roundtrip, found 8 hours ago
$173
Roundtrip
found 8 hours ago
Select Delta flight, departing Mon, Nov 3 from Detroit to San Juan, returning Fri, Nov 7, priced at $173 found 8 hours ago
American Airlines
Wed, Nov 5 - Fri, Nov 14
DTW
Detroit
SJU
San Juan
$176 Roundtrip, found 8 hours ago
$176
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Wed, Nov 5 from Detroit to San Juan, returning Fri, Nov 14, priced at $176 found 8 hours ago
Frontier Airlines
Sat, Sep 20 - Sat, Sep 27
DTW
Detroit
SJU
San Juan
$242 Roundtrip, found 12 hours ago
$242
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, Sep 20 from Detroit to San Juan, returning Sat, Sep 27, priced at $242 found 12 hours ago

Find the cheapest month to fly from Detroit (DTW) to San Juan (SJU)

August is typically the cheapest month to fly

From $134 - $215 per traveler.

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $188
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $188
Flights from Detroit (DTW) to San Juan (SJU)
Origin airport
Detroit Metropolitan Wayne County
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$140
Distance
1932 mi
Average flight time
3 hours 19 mins

Detroit to San Juan Flights

The cheapest times to fly from Detroit to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Detroit to San Juan are during the month of September. You can find some of the cheapest flights from Detroit to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Detroit to San Juan

Sunday is one of the best days to book for cheap flights from Detroit to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Detroit to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Detroit to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $70 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Detroit to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Detroit to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU) cost?
Lock in a cheap one-way flight from $70 or cheap return flight from $140 from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
Planning your trip for September may help you find better deals, as it's the cheapest month for flights between DTW and SJU. You'll usually find the lowest fares during the off-season.
Which airlines fly direct from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
You can fly directly from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU) on a Delta Air Lines flight.
What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
To find the cheapest airline flying from DTW to SJU, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
On average, Detroit Metropolitan Wayne County Airport (DTW) only offers 1 direct flight to Luis Munoz Marin Intl. Airport (SJU) every day. For more options, try our easy-to-use filter tool. Enter your dates, then click on "1 Stop" or "2+ Stops" to find flights with layovers.
What are the most popular departure times for flights from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
More travelers fly between DTW and SJU at 8 AM than at any other time of day. Looking to skip the crowds? Try choosing a quieter departure window and you're likely to save on your ticket as well.
What day of the week has the most flights from DTW to SJU?
If you fly on a Saturday, you'll get the biggest range of choices for flights from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU).
What is the earliest flight from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
Detroit Metropolitan Wayne County Airport (DTW)'s first flight to Luis Munoz Marin Intl. Airport (SJU) departs at approximately 7:00AM UTC-5. With a travel time of 4h 30m, you'll land at around 12:30PM UTC-4.
How long does it take to fly from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
The average flight duration from DTW to SJU is 4 hours and 26 minutes, covering a total distance of 1,950 mi.
What is the best time to fly from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
To avoid potential delays on the Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU) route, aim to fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Juan from Detroit Metropolitan Wayne County Airport (DTW)?
Check out your flight options from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU). This is the only airport in San Juan you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Last-minute bookings from DTW to SJU are generally more expensive. To secure the best rates, start searching for flights well in advance. That said, if you're flexible with your travel dates, you may find a cheap ticket right before you leave.
Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin Intl. Airport (SJU)?
Usually, it's possible to reschedule or cancel your DTW to SJU flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.