$119+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SJU
Jun 16 — Jun 231
Round-trip
1 adult, Economy
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Find cheap flights from Detroit to San Juan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Detroit All airports to San Juan are usually found in August or October, booked 74 days in advance, depart on a Monday or Thursday and return on a Thursday
Cheap flight deals from Detroit to San Juan
Cheapest
Best
Last-minute
One-way
Cheapest flights from Detroit to San JuanExplore 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 May 17, 2026.
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 May 17, 2026.
This Priceline deal was found by Cheapflights users on 5/12. 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 8/256:45 am
DTW
- SJU
1 stop7h 30m
Frontier
Wed 8/265:15 pm
SJU
- DTW
1 stop7h 27m
Frontier
Deal found 5/12![Frontier logo]()
$236
This Priceline deal was found by Cheapflights users on 5/12. 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.
Mon 8/1012:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Mon 8/172:36 pm
SJU
- DTW
1 stop19h 28m
Frontier
Deal found 5/12![Frontier logo]()
$240
This Priceline deal was found by Cheapflights users on 5/12. 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.
Sat 8/226:10 am
DTW
- SJU
1 stop8h 05m
Frontier
Wed 8/265:15 pm
SJU
- DTW
1 stop7h 27m
Frontier
Deal found 5/12![Frontier logo]()
$256
This Priceline deal was found by Cheapflights users on 5/12. 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.
Fri 8/1412:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Mon 8/172:36 pm
SJU
- DTW
1 stop19h 28m
Frontier
Deal found 5/12![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Thu 8/277:25 pm
DTW
- SJU
1 stop6h 29m
Frontier
Tue 9/16:41 pm
SJU
- DTW
2 stops30h 01m
Frontier
Deal found 5/15![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 5/12. 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.
Mon 8/312:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Thu 8/65:15 pm
SJU
- DTW
1 stop7h 25m
Frontier
Deal found 5/12![Frontier logo]()
$276
This Priceline deal was found by Cheapflights users on 5/12. 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 8/97:25 pm
DTW
- SJU
1 stop6h 46m
Frontier
Mon 8/174:05 pm
SJU
- DTW
1 stop19h 42m
Frontier
Deal found 5/12![Frontier logo]()
$277
This Booking.com deal was found by Cheapflights users on 5/13. 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 7/612:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Fri 7/105:15 pm
SJU
- DTW
1 stop7h 25m
Frontier
Deal found 5/13![Frontier logo]()
$278
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:29 pm
DTW
- SJU
1 stop29h 08m
Frontier
Thu 7/25:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/12![Frontier logo]()
$284
This Frontier deal was found by Cheapflights users on 5/15. 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.
Tue 8/412:37 pm
DTW
- SJU
1 stop10h 52m
Frontier
Wed 8/56:00 am
SJU
- DTW
1 stop7h 07m
Frontier
Deal found 5/15![Frontier logo]()
$291
This CheapOair deal was found by Cheapflights users on 5/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:25 pm
DTW
- SJU
1 stop6h 46m
Frontier
Sat 8/224:05 pm
SJU
- DTW
1 stop19h 42m
Frontier
Deal found 5/12![Frontier logo]()
$295
Best flights from Detroit to San JuanDiscover carefully curated flight deals from Detroit to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
Discover carefully curated flight deals from Detroit to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
This Southwest deal was found by Cheapflights users on 5/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:55 am
DTW
- SJU
2 stops11h 00m
Southwest
Mon 8/3111:35 am
SJU
- DTW
2 stops10h 30m
Southwest
Deal found 5/16![Southwest logo]()
$435
This Delta deal was found by Cheapflights users on 5/14. 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.
Sun 7/268:35 am
DTW
- SJU
Nonstop4h 36m
Delta
Fri 7/312:42 pm
SJU
- DTW
1 stop9h 02m
Delta
Deal found 5/14![Delta logo]()
$552
This Delta deal was found by Cheapflights users on 5/16. 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.
Tue 7/78:35 am
DTW
- SJU
Nonstop4h 36m
Delta
Thu 7/92:21 pm
SJU
- DTW
Nonstop4h 42m
Delta
Deal found 5/16![Delta logo]()
$597
This Southwest deal was found by Cheapflights users on 5/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2410:45 am
DTW
- SJU
2 stops8h 40m
Southwest
Fri 7/317:00 am
SJU
- DTW
2 stops8h 20m
Southwest
Deal found 5/16![Southwest logo]()
$641
This Delta deal was found by Cheapflights users on 5/16. 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.
Wed 7/18:35 am
DTW
- SJU
Nonstop4h 29m
Delta
Tue 7/72:21 pm
SJU
- DTW
Nonstop4h 42m
Delta
Deal found 5/16![Delta logo]()
$612
This Delta deal was found by Cheapflights users on 5/15. 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.
Tue 6/98:35 am
DTW
- SJU
Nonstop4h 29m
Delta
Tue 6/232:14 pm
SJU
- DTW
Nonstop4h 39m
Delta
Deal found 5/15![Delta logo]()
$627
This Delta deal was found by Cheapflights users on 5/16. 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 6/88:35 am
DTW
- SJU
Nonstop4h 29m
Delta
Wed 6/177:05 am
SJU
- DTW
1 stop7h 59m
Delta
Deal found 5/16![Delta logo]()
$632
This Delta deal was found by Cheapflights users on 5/16. 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.
Sun 7/128:35 am
DTW
- SJU
Nonstop4h 36m
Delta
Tue 7/212:21 pm
SJU
- DTW
Nonstop4h 42m
Delta
Deal found 5/16![Delta logo]()
$647
This Delta deal was found by Cheapflights users on 5/16. 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.
Wed 7/159:25 am
DTW
- SJU
1 stop7h 20m
Delta
Thu 7/232:21 pm
SJU
- DTW
Nonstop4h 42m
Delta
Deal found 5/16![Delta logo]()
$652
Last-minute flights from Detroit to San JuanDiscover last-minute flight deals from Detroit to San Juan. Data last updated May 17, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to San Juan. Data last updated May 17, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 5/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2612:44 pm
DTW
- SJU
1 stop13h 24m
Frontier
Tue 6/95:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/16![Frontier logo]()
$331
This Frontier deal was found by Cheapflights users on 5/12. 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.
Sun 5/3112:55 pm
DTW
- SJU
1 stop11h 46m
Frontier
Thu 6/45:15 pm
SJU
- DTW
1 stop7h 23m
Frontier
Deal found 5/12![Frontier logo]()
$326
This Frontier deal was found by Cheapflights users on 5/16. 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.
Tue 6/212:55 pm
DTW
- SJU
1 stop11h 46m
Frontier
Tue 6/95:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/16![Frontier logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Thu 6/46:57 pm
DTW
- SJU
1 stop29h 02m
Frontier
Tue 6/97:00 am
SJU
- DTW
2 stops17h 44m
Frontier
Deal found 5/16![Frontier logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Thu 6/46:57 pm
DTW
- SJU
1 stop29h 02m
Frontier
Wed 6/107:00 am
SJU
- DTW
2 stops17h 44m
Frontier
Deal found 5/16![Frontier logo]()
$355
This Priceline deal was found by Cheapflights users on 5/13. 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 6/912:42 pm
DTW
- SJU
1 stop12h 02m
Frontier
Thu 6/113:35 pm
SJU
- DTW
1 stop20h 00m
Frontier
Deal found 5/13![Frontier logo]()
$336
This Frontier deal was found by Cheapflights users on 5/13. 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.
Tue 6/912:42 pm
DTW
- SJU
1 stop12h 02m
Frontier
Tue 6/235:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/13![Frontier logo]()
$356
This Frontier deal was found by Cheapflights users on 5/12. 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.
Sat 6/1312:42 pm
DTW
- SJU
1 stop12h 02m
Frontier
Thu 7/25:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/12![Frontier logo]()
$361
This Frontier deal was found by Cheapflights users on 5/12. 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.
Mon 6/1512:42 pm
DTW
- SJU
1 stop12h 02m
Frontier
Mon 7/66:00 am
SJU
- DTW
1 stop7h 07m
Frontier
Deal found 5/12![Frontier logo]()
$321
This Priceline deal was found by Cheapflights users on 5/12. 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 6/217:29 pm
DTW
- SJU
1 stop29h 08m
Frontier
Fri 6/265:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/12![Frontier logo]()
$276
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:29 pm
DTW
- SJU
1 stop29h 08m
Frontier
Thu 7/25:15 pm
SJU
- DTW
1 stop7h 29m
Frontier
Deal found 5/12![Frontier logo]()
$284
One-way flights from Detroit to San JuanSearch for one-way flight options from Detroit to San Juan. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
Search for one-way flight options from Detroit to San Juan. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 8/1012:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Deal found 5/14![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 5/12. 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.
Sat 8/812:37 pm
DTW
- SJU
1 stop13h 34m
Frontier
Deal found 5/12![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 7/1112:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Deal found 5/13![Frontier logo]()
$128
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:25 pm
DTW
- SJU
1 stop12h 32m
Frontier
Deal found 5/12![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Sun 8/92:02 pm
DTW
- SJU
2 stops34h 26m
Frontier
Deal found 5/13![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 5/12. 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.
Mon 7/612:50 pm
DTW
- SJU
1 stop11h 57m
Frontier
Deal found 5/12![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 5/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:37 pm
DTW
- SJU
1 stop10h 52m
Frontier
Deal found 5/15![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Fri 7/102:02 pm
DTW
- SJU
1 stop13h 56m
Frontier
Deal found 5/13![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 5/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:29 pm
DTW
- SJU
1 stop29h 08m
Frontier
Deal found 5/13![Frontier logo]()
$147
This Expedia deal was found by Cheapflights users on 5/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:37 pm
DTW
- SJU
1 stop13h 34m
Frontier
Deal found 5/13![Frontier logo]()
$148
Find 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 May 17, 2026.
Round-trip from | $236 (Priceline) |
|---|---|
One-way from | $119 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $359 |
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 May 17, 2026.
Use the filters below to find and compare flights from Detroit to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Thu 8/27
5:55 am-4:55 pm
2 stops11h 00m
San Juan Luis Munoz Marin Intl
Mon 8/31
11:35 am-10:05 pm
2 stops10h 30m
$435
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Sun 7/26
8:35 am-1:11 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Fri 7/31
2:42 pm-11:44 pm
1 stop9h 02m
$552
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 7/7
8:35 am-1:11 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Thu 7/9
2:21 pm-7:03 pm
Nonstop4h 42m
$597
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Wed 7/1
8:35 am-1:04 pm
Nonstop4h 29m
San Juan Luis Munoz Marin Intl
Tue 7/7
2:21 pm-7:03 pm
Nonstop4h 42m
$612
Quickest round-trip
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 6/9
8:35 am-1:04 pm
Nonstop4h 29m
San Juan Luis Munoz Marin Intl
Tue 6/23
2:14 pm-6:53 pm
Nonstop4h 39m
$627
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 6/8
8:35 am-1:04 pm
Nonstop4h 29m
San Juan Luis Munoz Marin Intl
Wed 6/17
7:05 am-3:04 pm
1 stop7h 59m
$632
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Fri 7/24
10:45 am-7:25 pm
2 stops8h 40m
San Juan Luis Munoz Marin Intl
Fri 7/31
7:00 am-3:20 pm
2 stops8h 20m
$641
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Sun 7/12
8:35 am-1:11 pm
Nonstop4h 36m
San Juan Luis Munoz Marin Intl
Tue 7/21
2:21 pm-7:03 pm
Nonstop4h 42m
$647
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Wed 7/15
9:25 am-4:45 pm
1 stop7h 20m
San Juan Luis Munoz Marin Intl
Thu 7/23
2:21 pm-7:03 pm
Nonstop4h 42m
$652
Cheapest one-way
Quickest one-way
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 11/10
8:37 am-2:00 pm
Nonstop4h 23m
$269
Showing 1-10 of 20 resultsSorted by cheapest first
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.
DTT-PR1
DTW-SJU
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
DTT-PR1
DTW-SJU
How far ahead should I book a flight from Detroit to San Juan?
Booking 1 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 $67). Flying from Detroit to San Juan in December is currently the most expensive (average of $1,675). 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 May 17, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to San Juan as you normally would.
Weekly flight availability from Detroit to San Juan
Explore weekly flight availability from Detroit to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 17, 2026.
The most flights from DTT to PR1 are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
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 May 17, 2026.
Read through reviews of airlines operating flights from Detroit to San Juan, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
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Detroit and San Juan flights
Browse other Detroit and San Juan flight options. Last updated on May 17, 2026.
Other flights from Detroit
Browse through other flights departing from Detroit. Flights are based on user searches made on Cheapflights and were last updated on May 17, 2026.
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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 May 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$296 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$168 | Average$283 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$199 | Average$544 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$347 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$266 | Average$545 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$329 | Average$585 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$395 | Average$533 | FlexibilityNo cancel fee | On-time63% |