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$96+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — SJU
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
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The best prices from Detroit All airports to San Juan are usually found in April or October, booked 26 days in advance, depart on a Tuesday or Monday 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 February 23, 2025.

Round-trip from

$158
(Cheapflightsfares)

One-way from

$101
(Cheapflightsfares)

Popular in

November

Cheapest in

April

Average price

$310
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. 10% potential increase in price ($43 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 February 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 February 23, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:33 pmDTW - SJU
1 stop14h 07mSpirit Airlines
Tue 5/61:10 amSJU - DTW
1 stop7h 32mSpirit Airlines
Deal found 2/22$158
This FlightHub deal was found by Cheapflights users on 2/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/119:02 amDTW - SJU
1 stop14h 36mFrontier
Mon 3/175:45 amSJU - DTW
1 stop26h 17mFrontier
Deal found 2/22$161
This CheapOair deal was found by Cheapflights users on 2/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/119:02 amDTW - SJU
1 stop14h 36mMultiple Airlines
Mon 3/173:38 amSJU - DTW
1 stop8h 53mMultiple Airlines
Deal found 2/21$169
This JetBlue deal was found by Cheapflights users on 2/22. 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.
Tue 4/292:30 pmDTW - SJU
1 stop10h 15mJetBlue
Sat 5/106:05 amSJU - DTW
1 stop10h 48mJetBlue
Deal found 2/22$302

Find flights from Detroit to San Juan within your budget

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 February 23, 2025.

Fly from

Detroit

Fly to

San Juan

Route

Depart

Return

Price

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Wed 4/30

7:33 pm-9:40 am

1 stop14h 07m

San Juan Luis Munoz Marin Intl

Tue 5/6

1:10 am-8:42 am

1 stop7h 32m

$158

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 3/11

9:02 am-11:38 pm

1 stop14h 36m

San Juan Luis Munoz Marin Intl

Mon 3/17

9:37 pm-6:25 pm

1 stop20h 48m

$161

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 3/11

9:02 am-11:38 pm

1 stop14h 36m

San Juan Luis Munoz Marin Intl

Mon 3/17

3:38 am-12:31 pm

1 stop8h 53m

$169

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 4/29

2:30 pm-12:45 am

1 stop10h 15m

San Juan Luis Munoz Marin Intl

Sat 5/10

6:05 am-4:53 pm

1 stop10h 48m

$302

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sun 3/16

1:57 pm-8:25 pm

1 stop6h 28m

$96

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 3/3

10:21 am-5:01 pm

1 stop29h 40m

$98

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 3/17

1:00 pm-10:40 pm

2 stops9h 40m

$218

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Sun 5/18

8:35 am-12:59 pm

Nonstop4h 24m

$224

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 3/14

12:07 pm-8:24 pm

2 stops8h 17m

$229

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 3/28

6:00 am-9:22 pm

2 stops15h 22m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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.

Travel insights for flights from Detroit to San Juan

Get recent, data-driven insights about flights from Detroit to San Juan including ideal travel times, pricing trends, and more.

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 February 14, 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 March is currently the most expensive (average of $363). 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 February 23, 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.

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 February 23, 2025.

The most flights from DTT to PR1 are scheduled on a Saturday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 February 23, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta 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
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,387 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,068 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 2 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.

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

    Currently priced at $158, 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 JetBlue - these airlines can fly you to your destination from $161 and $302, respectively. Spirit Airlines is currently priced 56% 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 $101 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $103 and Delta from $224 one-way.

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

    On average you can expect to pay $439 for a flight from Detroit to San Juan. The cheapest flight overall is $219 while the most popular route, (Detroit Metropolitan Wayne County - San Juan Luis Munoz Marin Intl) is currently priced at $131.

  • 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 $27 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 March is currently the most expensive (average of $363). 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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$196FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$188Average$304FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$250Average$417FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$284Average$584FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$396Average$589FlexibilityNo cancel feeOn-time63%
DeltaCheapest$417Average$646FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$446Average$742FlexibilityNo cancel feeOn-time69%
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