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$75+ Cheap flights from Detroit (DTT) to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SJU
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit All airports to San Juan are usually found in August or September, booked 26 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Detroit to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to San Juan (PR1). 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 April 29, 2025.

Round-trip from

$189
(Priceline)

One-way from

$75
(Cheapflightsfares)

Popular in

November

Cheapest in

August

Average price

$336
From Detroit (DTT) to San Juan
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One-way flight from Detroit (DTT) to San Juan
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Highest demand for flights based on searches. 14% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Detroit to San Juan

Cheapest flights from Detroit to San Juan
Explore the most affordable flight options available from Detroit to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Priceline deal was found by Cheapflights users on 4/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/139:09 pmDTW - SJU
1 stop14h 22mSpirit Airlines
Thu 5/298:57 pmSJU - DTW
1 stop15h 18mSpirit Airlines
Deal found 4/29$189
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/199:09 pmDTW - SJU
1 stop14h 22mMultiple Airlines
Thu 5/223:40 amSJU - DTW
1 stop29h 07mMultiple Airlines
Deal found 4/29$237
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1512:49 pmDTW - SJU
1 stop11h 16mFrontier
Sun 5/183:56 amSJU - DTW
1 stop14h 04mFrontier
Deal found 4/29$318
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/139:20 amDTW - SJU
2 stops11h 18mUnited Airlines
Tue 5/207:45 amSJU - DTW
1 stop7h 35mUnited Airlines
Deal found 4/29$343
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:35 amDTW - SJU
Nonstop4h 35mDelta
Thu 11/133:25 pmSJU - DTW
Nonstop4h 50mDelta
Deal found 4/29$344
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/137:55 amDTW - SJU
2 stops8h 41mAmerican Airlines
Tue 5/201:35 pmSJU - DTW
1 stop7h 47mAmerican Airlines
Deal found 4/29$375

Cheapflights Fare Finder

Customize your flight search to find flights from Detroit to San Juan 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 April 29, 2025.
Use the filters below to find and compare flights from Detroit to San Juan that are best for you.

Fly from

Detroit

Fly to

San Juan

Route

Depart

Return

Price

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 5/13

9:09 pm-11:31 am

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Thu 5/29

8:57 pm-12:15 pm

1 stop15h 18m

$189

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 5/19

9:09 pm-11:31 am

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Thu 5/22

3:40 am-8:47 am

1 stop29h 07m

$237

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Thu 5/15

12:49 pm-12:05 am

1 stop11h 16m

San Juan Luis Munoz Marin Intl

Sun 5/18

3:56 am-6:00 pm

1 stop14h 04m

$318

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 5/13

9:20 am-8:38 pm

2 stops11h 18m

San Juan Luis Munoz Marin Intl

Tue 5/20

7:45 am-3:20 pm

1 stop7h 35m

$343

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 5/13

7:55 am-4:36 pm

2 stops8h 41m

San Juan Luis Munoz Marin Intl

Tue 5/20

1:35 pm-9:22 pm

1 stop7h 47m

$375

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Wed 6/4

8:25 am-12:45 pm

Nonstop4h 20m

San Juan Luis Munoz Marin Intl

Wed 6/11

2:35 pm-7:14 pm

Nonstop4h 39m

$376

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 9/5

8:15 am-4:00 pm

1 stop7h 45m

San Juan Luis Munoz Marin Intl

Sun 9/7

3:15 am-11:30 am

1 stop8h 15m

$384

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 5/13

9:09 pm-11:31 am

1 stop14h 22m

$75

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 5/12

8:25 am-12:45 pm

Nonstop4h 20m

$188

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sat 5/10

6:00 am-2:40 pm

2 stops8h 40m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 12 results
1
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Best time to book a flight from Detroit to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Detroit 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 Detroit to San Juan

How far ahead should I book a flight from Detroit to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Detroit to San Juan. Price data was last updated on April 25, 2025.

Booking 26 days in advance of your planned departure date is, on average, the best time to get cheap flights from Detroit to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Detroit to San Juan?

Currently, September is the cheapest month in which you can book a flight from Detroit to San Juan (average of $254). Flying from Detroit to San Juan in December is currently the most expensive (average of $336). 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 DTT to SJU?

Find hourly flight availability from Detroit to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s optimal to fly from Detroit to San Juan in the evening. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Detroit to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Detroit to San Juan. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Detroit to San Juan flight should consider departing on Sunday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 Juan. Reviews last updated April 29, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines from Detroit to San Juan by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,929 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
JetBlue
7.3
Good
2,922 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Detroit to San Juan. 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 from for flights from Detroit to San Juan?

    Detroit All airports (DTT) is the airport you will fly out of if you book a flight from Detroit to San Juan. You should not have trouble finding flights to San Juan from All airports; the airport handles an average of 1 outbound flight to San Juan per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Detroit airport to San Juan. It is only a 0.6 mi journey to All airports (DTT) from Detroit’s city center.

  • What are the cheapest airlines flying from Detroit to San Juan round-trip?

    Currently priced at $189, Spirit Airlines will fly you from Detroit to San Juan and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and United Airlines - these airlines can fly you to your destination from $318 and $343, respectively. Spirit Airlines is currently priced 47% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Detroit to San Juan one-way?

    One-way options have recently been found by users for as low as $75 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $188 and American Airlines from $219 one-way.

  • What are the cheapest flights from Detroit to San Juan?

    On average you can expect to pay $334 for a flight from Detroit to San Juan. The cheapest flight overall is $113 while the most popular route, (Detroit Metropolitan Wayne County - San Juan Luis Munoz Marin Intl) is currently priced at $189.

  • Where are the most common layover locations when flying from Detroit to San Juan?

    The most popular layover on flights from Detroit to San Juan is Orlando.

  • What are some popular things to do or see while on a layover in Orlando?

    Orlando travelers tend to visit Walt Disney World Resort, Universal Orlando Resort, and International Drive more than anywhere else. Walt Disney World Resort, Universal Orlando Resort, and International Drive can be accessed by traveling approximately 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Travelers in need of a car in Orlando can rent one for about $26 per day.

  • Where are the least popular layover locations for Detroit to San Juan flights?

    Of the flights from Detroit to San Juan that have layovers, the fewest flights stop in Atlanta.

  • Can I find deals for flights from Detroit to San Juan that include hotel bookings?

    Yes. In addition to deals on Detroit to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Detroit to San Juan?

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

  • Can I find deals for business class flights from Detroit to San Juan?

    Yes. Cheapflights offers flight deals from Detroit to San Juan 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 Detroit to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Detroit to San Juan (average of $254). Flying from Detroit to San Juan in December is currently the most expensive (average of $336). 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 7 airlines flying from Detroit to San Juan

Discover the top 7 airlines that operate flights from Detroit to San Juan. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$167FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$180Average$282FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$276Average$386FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$284Average$565FlexibilityNo cancel feeOn-time71%
DeltaCheapest$416Average$653FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$435Average$692FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$465Average$581FlexibilityNo cancel feeOn-time63%

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