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$69+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit All airports to San Juan are usually found in July or September, booked 12 days in advance, depart on a Monday or Thursday 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 September 11, 2025.

Round-trip from

$147
(Kiwi.com)

One-way from

$69
(Kiwi.com)

Popular in

November

Cheapest in

July

Average price

$246
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. 6% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 11/810:49 amDTW - SJU
Nonstop4h 34mSpirit Airlines
Sat 11/156:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$147
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Mon 11/1010:49 amDTW - SJU
Nonstop4h 34mSpirit Airlines
Mon 11/176:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$148
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Sat 11/1510:49 amDTW - SJU
Nonstop4h 34mSpirit Airlines
Sat 11/226:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$154
This Priceline deal was found by Cheapflights users on 9/9. 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.
Sun 9/219:12 amDTW - SJU
Nonstop4h 31mSpirit Airlines
Thu 9/252:38 pmSJU - DTW
Nonstop4h 46mSpirit Airlines
Deal found 9/9$155
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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.
Thu 10/29:12 amDTW - SJU
Nonstop4h 31mSpirit Airlines
Mon 10/62:49 amSJU - DTW
1 stop10h 59mSpirit Airlines
Deal found 9/8$162
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Fri 11/77:21 pmDTW - SJU
1 stop8h 19mSpirit Airlines
Sat 11/156:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$171
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Sun 11/912:16 pmDTW - SJU
1 stop6h 05mSpirit Airlines
Mon 11/176:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$172
This Priceline deal was found by Cheapflights users on 9/10. 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.
Thu 9/259:12 amDTW - SJU
Nonstop4h 31mSpirit Airlines
Mon 9/293:19 pmSJU - DTW
1 stop7h 21mSpirit Airlines
Deal found 9/10$173
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Thu 9/259:12 amDTW - SJU
Nonstop4h 31mSpirit Airlines
Sun 9/2811:59 amSJU - DTW
1 stop11h 44mSpirit Airlines
Deal found 9/10$175
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Sat 12/610:49 amDTW - SJU
Nonstop4h 34mSpirit Airlines
Sat 12/206:00 amSJU - DTW
Nonstop4h 44mSpirit Airlines
Deal found 9/10$179
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 11/810:49 amDTW - SJU
Nonstop4h 34mSpirit Airlines
Thu 11/201:35 pmSJU - DTW
1 stop8h 48mSpirit Airlines
Deal found 9/10$181

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 September 11, 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 11/11

8:47 am-2:10 pm

Nonstop4h 23m

San Juan Luis Munoz Marin Intl

Tue 11/18

3:20 pm-7:10 pm

Nonstop4h 50m

$190

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sun 11/9

2:41 pm-11:13 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Thu 11/20

3:20 pm-7:10 pm

Nonstop4h 50m

$195

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 11/3

8:55 am-2:12 pm

Nonstop4h 17m

San Juan Luis Munoz Marin Intl

Thu 11/6

6:43 pm-12:56 am

1 stop7h 13m

$195

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 11/11

8:47 am-2:10 pm

Nonstop4h 23m

San Juan Luis Munoz Marin Intl

Wed 11/19

7:15 am-3:07 pm

1 stop8h 52m

$195

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sun 11/16

8:47 am-2:10 pm

Nonstop4h 23m

San Juan Luis Munoz Marin Intl

Wed 11/19

7:15 am-3:07 pm

1 stop8h 52m

$195

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sat 11/1

1:05 pm-11:45 pm

1 stop10h 40m

San Juan Luis Munoz Marin Intl

Fri 11/7

6:10 am-12:10 pm

1 stop7h 00m

$199

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 10/21

4:37 pm-11:56 pm

1 stop7h 19m

San Juan Luis Munoz Marin Intl

Sat 10/25

7:00 am-3:04 pm

1 stop8h 04m

$199

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sat 11/15

7:05 am-5:20 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Tue 11/18

7:15 am-3:07 pm

1 stop8h 52m

$199

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Wed 11/12

7:05 am-5:20 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Thu 11/20

3:20 pm-7:10 pm

Nonstop4h 50m

$228

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Wed 11/12

7:05 am-5:20 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Tue 11/18

3:20 pm-7:10 pm

Nonstop4h 50m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
2

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 August 29, 2025.

Booking 12 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 June is currently the most expensive (average of $339). 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 September 11, 2025.

It’s optimal to fly from Detroit to San Juan in the afternoon. By choosing this option you can save up to 53% 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.

How much does it cost to fly round-trip from Detroit to San Juan?

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 September 11, 2025.
Read through reviews of airlines operating flights from Detroit to San Juan, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 0 outbound flights 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.

  • How long is the flight from Detroit to San Juan?

    For as low as $190, Delta can have you in San Juan from Detroit in 4h 23m. There are 1932 mi between Detroit and San Juan. Most flights are nonstop.

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

    Currently priced at $124, Frontier will fly you from Detroit to San Juan and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and JetBlue - these airlines can fly you to your destination from $153 and $281, respectively. Frontier is currently priced 64% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Detroit to San Juan?

    No one likes to see their flight delayed. When booking a flight from Detroit to San Juan consider choosing WestJet (90%), Spirit Airlines (82%) or Delta (80%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $318 for a flight from Detroit to San Juan. The cheapest flight overall is $68 while the most popular route, (Detroit Metropolitan Wayne County - San Juan Luis Munoz Marin Intl) is currently priced at $139.

  • 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 $28 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 June is currently the most expensive (average of $339). 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

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$168FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$153Average$270FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$281Average$386FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$621FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$396Average$573FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$400Average$596FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$418Average$609FlexibilityNo cancel feeOn-time69%

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