$102+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
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 October or August, booked 29 days in advance, depart on a Monday or Friday and return on a Thursday
Cheap flight deals from Detroit to San Juan
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 December 23, 2025.
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 December 23, 2025.
This Priceline deal was found by Cheapflights users on 12/21. 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.
This JetBlue deal was found by Cheapflights users on 12/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
This Frontier deal was found by Cheapflights users on 12/21. 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.
This Booking.com deal was found by Cheapflights users on 12/22. 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.
This Priceline deal was found by Cheapflights users on 12/22. 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.
This Priceline deal was found by Cheapflights users on 12/20. 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.
This Priceline deal was found by Cheapflights users on 12/21. 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.
This Booking.com deal was found by Cheapflights users on 12/21. 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.
This Priceline deal was found by Cheapflights users on 12/22. 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.
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
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 December 23, 2025.
Round-trip from | $203 (Cheapflightsfares) |
|---|---|
One-way from | $102 (Frontier) |
Popular in | December |
Cheapest in | October |
Average price | $566 |
Cheapflights Fare Finder
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
Price
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 2/2
8:43 am-2:10 pm
Nonstop4h 27m
San Juan Luis Munoz Marin Intl
Fri 2/6
3:20 pm-7:15 pm
Nonstop4h 55m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 2/23
8:35 am-2:00 pm
Nonstop4h 25m
San Juan Luis Munoz Marin Intl
Wed 2/25
7:00 am-3:04 pm
1 stop9h 04m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 2/23
8:35 am-2:00 pm
Nonstop4h 25m
San Juan Luis Munoz Marin Intl
Tue 3/3
6:15 am-3:05 pm
1 stop9h 50m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Mon 1/19
8:43 am-2:10 pm
Nonstop4h 27m
San Juan Luis Munoz Marin Intl
Wed 1/28
7:30 am-5:15 pm
1 stop10h 45m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 1/20
8:43 am-2:10 pm
Nonstop4h 27m
San Juan Luis Munoz Marin Intl
Tue 1/27
6:27 pm-12:45 am
1 stop7h 18m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Sun 1/11
11:05 am-10:22 pm
2 stops10h 17m
San Juan Luis Munoz Marin Intl
Mon 1/12
2:05 am-1:21 pm
2 stops12h 16m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Wed 2/25
12:21 pm-11:58 pm
1 stop10h 37m
San Juan Luis Munoz Marin Intl
Wed 3/11
2:07 pm-6:55 pm
Nonstop4h 48m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 3/3
12:21 pm-11:58 pm
1 stop10h 37m
San Juan Luis Munoz Marin Intl
Tue 3/10
2:07 pm-6:55 pm
Nonstop4h 48m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Tue 2/24
8:35 am-2:00 pm
Nonstop4h 25m
San Juan Luis Munoz Marin Intl
Fri 2/27
2:16 pm-9:55 pm
1 stop8h 39m
DetroitSan Juan
DTW - SJU
DTWSJU
Detroit Metropolitan Wayne County
Fri 1/23
8:43 am-2:10 pm
Nonstop4h 27m
San Juan Luis Munoz Marin Intl
Tue 1/27
7:30 am-5:15 pm
1 stop10h 45m
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.
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 December 19, 2025.
Booking 29 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, August is the cheapest month in which you can book a flight from Detroit to San Juan (average of $132). Flying from Detroit to San Juan in December is currently the most expensive (average of $202). 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 December 23, 2025.
It’s optimal to fly from Detroit to San Juan in the evening. By choosing this option you can save up to 40% 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 Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 December 23, 2025.
The most flights from DTT to PR1 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 December 23, 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.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Detroit to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
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 December 23, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$124 | Average$239 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$147 | Average$281 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$229 | Average$570 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$266 | Average$545 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$281 | Average$362 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$329 | Average$568 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$395 | Average$555 | FlexibilityNo cancel fee | On-time63% |