$87+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SJU
Aug 3 — Aug 101
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 78 days in advance, depart on a Monday or Tuesday 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 July 4, 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 July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Wed 8/125:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Mon 8/1710:48 pm
SJU
- DTW
1 stop10h 06m
Frontier
Deal found 6/30![Frontier logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/256:10 am
DTW
- SJU
2 stops18h 31m
Frontier
Mon 7/2710:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 6/30![Frontier logo]()
$349
This Frontier deal was found by Cheapflights users on 6/30. 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 8/116:10 am
DTW
- SJU
1 stop8h 06m
Frontier
Thu 8/208:57 pm
SJU
- DTW
1 stop11h 57m
Frontier
Deal found 6/30![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/256:02 pm
DTW
- SJU
1 stop30h 39m
Frontier
Fri 7/316:00 am
SJU
- DTW
1 stop30h 55m
Frontier
Deal found 7/3![Frontier logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 10/111:00 am
DTW
- SJU
1 stop12h 38m
Frontier
Sun 10/46:42 pm
SJU
- DTW
2 stops19h 57m
Frontier
Deal found 7/1![Frontier logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/216:00 am
DTW
- SJU
2 stops18h 56m
Frontier
Sun 8/238:57 pm
SJU
- DTW
1 stop11h 57m
Frontier
Deal found 6/30![Frontier logo]()
$353
This Frontier deal was found by Cheapflights users on 7/1. 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.
Wed 7/225:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Mon 7/2710:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 7/1![Frontier logo]()
$355
This Frontier deal was found by Cheapflights users on 6/30. 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.
Wed 7/221:50 pm
DTW
- SJU
1 stop13h 09m
Frontier
Fri 7/2410:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 6/30![Frontier logo]()
$356
This CheapOair deal was found by Cheapflights users on 7/1. 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.
Sat 9/196:00 am
DTW
- SJU
2 stops10h 51m
Multiple Airlines
Sat 9/264:30 pm
SJU
- DTW
1 stop8h 12m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Wed 7/155:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Tue 7/216:00 am
SJU
- DTW
1 stop30h 55m
Frontier
Deal found 7/1![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 10/1511:00 am
DTW
- SJU
1 stop12h 38m
Frontier
Sun 10/182:58 am
SJU
- DTW
1 stop9h 06m
Frontier
Deal found 7/1![Frontier logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Wed 8/125:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Wed 8/1912:11 pm
SJU
- DTW
2 stops12h 53m
Frontier
Deal found 7/1![Frontier logo]()
$360
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 July 4, 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 July 4, 2026.
This Southwest deal was found by Cheapflights users on 7/1. 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 9/171:20 pm
DTW
- SJU
2 stops10h 30m
Southwest
Mon 9/215:00 am
SJU
- DTW
2 stops10h 10m
Southwest
Deal found 7/1![Southwest logo]()
$401
This Delta deal was found by Cheapflights users on 6/30. 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 11/178:37 am
DTW
- SJU
Nonstop4h 23m
Delta
Tue 11/243:10 pm
SJU
- DTW
Nonstop4h 50m
Delta
Deal found 6/30![Delta logo]()
$497
This Southwest deal was found by Cheapflights users on 7/1. 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 8/282:40 pm
DTW
- SJU
2 stops9h 10m
Southwest
Mon 8/315:30 am
SJU
- DTW
1 stop8h 35m
Southwest
Deal found 7/1![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 7/3. 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.
Tue 9/228:45 am
DTW
- SJU
2 stops9h 25m
Southwest
Tue 9/2910:30 am
SJU
- DTW
2 stops10h 45m
Southwest
Deal found 7/3![Southwest logo]()
$414
This Delta deal was found by Cheapflights users on 7/3. 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 12/68:36 am
DTW
- SJU
Nonstop4h 24m
Delta
Tue 12/153:10 pm
SJU
- DTW
Nonstop4h 49m
Delta
Deal found 7/3![Delta logo]()
$497
This Delta deal was found by Cheapflights users on 7/1. 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 11/108:37 am
DTW
- SJU
Nonstop4h 23m
Delta
Thu 11/193:10 pm
SJU
- DTW
Nonstop4h 50m
Delta
Deal found 7/1![Delta logo]()
$497
This Delta deal was found by Cheapflights users on 6/30. 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 11/1612:15 pm
DTW
- SJU
1 stop9h 58m
Delta
Fri 11/203:10 pm
SJU
- DTW
Nonstop4h 50m
Delta
Deal found 6/30![Delta logo]()
$502
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 11/207:00 am
DTW
- SJU
1 stop9h 20m
Delta
Tue 11/243:10 pm
SJU
- DTW
Nonstop4h 50m
Delta
Deal found 7/3![Delta logo]()
$527
This Delta deal was found by Cheapflights users on 7/1. 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 11/94:10 pm
DTW
- SJU
1 stop6h 45m
Delta
Sat 11/143:10 pm
SJU
- DTW
Nonstop4h 50m
Delta
Deal found 7/1![Delta logo]()
$527
Last-minute flights from Detroit to San JuanDiscover last-minute flight deals from Detroit to San Juan. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to San Juan. Data last updated July 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Wed 7/155:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Tue 7/216:00 am
SJU
- DTW
1 stop30h 55m
Frontier
Deal found 7/1![Frontier logo]()
$358
This Frontier deal was found by Cheapflights users on 7/1. 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.
Wed 7/225:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Mon 7/2710:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 7/1![Frontier logo]()
$355
This Frontier deal was found by Cheapflights users on 6/30. 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.
Wed 7/221:50 pm
DTW
- SJU
1 stop13h 09m
Frontier
Fri 7/2410:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 6/30![Frontier logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Wed 7/229:12 am
DTW
- SJU
1 stop6h 53m
Frontier
Thu 7/306:00 am
SJU
- DTW
2 stops18h 40m
Frontier
Deal found 7/1![Frontier logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/236:10 am
DTW
- SJU
2 stops31h 50m
Frontier
Sat 7/255:15 pm
SJU
- DTW
1 stop7h 25m
Frontier
Deal found 6/30![Frontier logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/256:10 am
DTW
- SJU
2 stops18h 31m
Frontier
Mon 7/2710:48 pm
SJU
- DTW
1 stop13h 07m
Frontier
Deal found 6/30![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/256:02 pm
DTW
- SJU
1 stop30h 39m
Frontier
Fri 7/316:00 am
SJU
- DTW
1 stop30h 55m
Frontier
Deal found 7/3![Frontier logo]()
$351
This Frontier deal was found by Cheapflights users on 6/30. 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 8/116:10 am
DTW
- SJU
1 stop8h 06m
Frontier
Thu 8/208:57 pm
SJU
- DTW
1 stop11h 57m
Frontier
Deal found 6/30![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Wed 8/125:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Mon 8/1710:48 pm
SJU
- DTW
1 stop10h 06m
Frontier
Deal found 6/30![Frontier logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Wed 8/125:34 pm
DTW
- SJU
1 stop8h 41m
Frontier
Wed 8/1912:11 pm
SJU
- DTW
2 stops12h 53m
Frontier
Deal found 7/1![Frontier logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/216:00 am
DTW
- SJU
2 stops18h 56m
Frontier
Sun 8/238:57 pm
SJU
- DTW
1 stop11h 57m
Frontier
Deal found 6/30![Frontier logo]()
$353
This CheapOair deal was found by Cheapflights users on 6/30. 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.
Wed 8/266:05 am
DTW
- SJU
2 stops17h 53m
Multiple Airlines
Sun 8/303:10 am
SJU
- DTW
1 stop13h 16m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$362
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 July 4, 2026.
Search for one-way flight options from Detroit to San Juan. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 9/11:40 pm
DTW
- SJU
1 stop11h 16m
Frontier
Deal found 7/2![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:40 pm
DTW
- SJU
1 stop11h 16m
Frontier
Deal found 6/29![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Tue 9/2911:00 am
DTW
- SJU
1 stop12h 38m
Frontier
Deal found 7/1![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:18 am
DTW
- SJU
1 stop29h 53m
Frontier
Deal found 6/29![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Wed 9/3011:00 am
DTW
- SJU
1 stop12h 38m
Frontier
Deal found 6/30![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 9/273:34 pm
DTW
- SJU
2 stops32h 23m
Frontier
Deal found 7/2![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/156:02 pm
DTW
- SJU
1 stop30h 39m
Frontier
Deal found 6/30![Frontier logo]()
$133
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 July 4, 2026.
Round-trip from | $348 (Kiwi.com) |
|---|---|
One-way from | $87 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $336 |
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 July 4, 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 9/17
1:20 pm-11:50 pm
2 stops10h 30m
San Juan Luis Munoz Marin Intl
Mon 9/21
5:00 am-3:10 pm
2 stops10h 10m
$401
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Fri 8/28
2:40 pm-11:50 pm
2 stops9h 10m
San Juan Luis Munoz Marin Intl
Mon 8/31
5:30 am-2:05 pm
1 stop8h 35m
$407
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 9/22
8:45 am-6:10 pm
2 stops9h 25m
San Juan Luis Munoz Marin Intl
Tue 9/29
10:30 am-9:15 pm
2 stops10h 45m
$414
Quickest round-trip
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 11/17
8:37 am-2:00 pm
Nonstop4h 23m
San Juan Luis Munoz Marin Intl
Tue 11/24
3:10 pm-7:00 pm
Nonstop4h 50m
$497
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Sun 12/6
8:36 am-2:00 pm
Nonstop4h 24m
San Juan Luis Munoz Marin Intl
Tue 12/15
3:10 pm-6:59 pm
Nonstop4h 49m
$497
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 11/10
8:37 am-2:00 pm
Nonstop4h 23m
San Juan Luis Munoz Marin Intl
Thu 11/19
3:10 pm-7:00 pm
Nonstop4h 50m
$497
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 11/16
12:15 pm-11:13 pm
1 stop9h 58m
San Juan Luis Munoz Marin Intl
Fri 11/20
3:10 pm-7:00 pm
Nonstop4h 50m
$502
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Fri 11/20
7:00 am-5:20 pm
1 stop9h 20m
San Juan Luis Munoz Marin Intl
Tue 11/24
3:10 pm-7:00 pm
Nonstop4h 50m
$527
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 11/9
4:10 pm-11:55 pm
1 stop6h 45m
San Juan Luis Munoz Marin Intl
Sat 11/14
3:10 pm-7:00 pm
Nonstop4h 50m
$527
Cheapest one-way
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Wed 8/26
10:18 am-4:11 pm
1 stop29h 53m
$127
Showing 1-10 of 21 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
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 $1,728). 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 July 4, 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.
How much does it cost to fly round-trip from Detroit to San Juan?
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.
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 July 4, 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.
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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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Alternative routes for Detroit to San Juan
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Complete your trip
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Find flights from Detroit to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Detroit and San Juan flights
Browse other Detroit and San Juan flight options. Last updated on July 4, 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 July 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Detroit to San Juan
Discover the top 6 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 July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$355 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$196 | Average$597 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$362 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$266 | Average$545 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$329 | Average$608 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$394 | Average$516 | FlexibilityNo cancel fee | On-time63% |