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Cheap flights from Detroit to San Juan from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Detroit to San Juan departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Detroit to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:58 am - 11:57 pm
DTW
-
SJU
11h 59m
1 stop
Frontier Logo
5:12 pm - 2:39 pm
SJU
-
DTW
21h 27m
2 stops
$345Frontier
Fri, Sep 18 - Sat, Sep 26
Frontier Logo
11:58 am - 11:57 pm
DTW
-
SJU
11h 59m
1 stop
Frontier Logo
5:12 pm - 1:07 pm
SJU
-
DTW
19h 55m
1 stop
$346Frontier
Fri, Sep 18 - Sat, Sep 26
Frontier Logo
6:10 am - 2:00 pm
DTW
-
SJU
31h 50m
2 stops
Frontier Logo
10:48 pm - 11:55 am
SJU
-
DTW
13h 07m
1 stop
$347Frontier
Mon, Aug 3 - Fri, Aug 7
Multiple Airlines Logo
6:05 am - 11:58 pm
DTW
-
SJU
17h 53m
2 stops
Multiple Airlines Logo
3:00 am - 5:39 pm
SJU
-
DTW
14h 39m
1 stop
$348Multiple Airlines
Wed, Sep 2 - Tue, Sep 15
Frontier Logo
11:00 am - 11:38 pm
DTW
-
SJU
12h 38m
1 stop
Frontier Logo
5:12 pm - 1:07 pm
SJU
-
DTW
19h 55m
1 stop
$349Frontier
Fri, Sep 18 - Sat, Sep 26
Frontier Logo
1:40 pm - 12:56 am
DTW
-
SJU
11h 16m
1 stop
Frontier Logo
6:35 am - 5:22 pm
SJU
-
DTW
10h 47m
1 stop
$350Frontier
Tue, Aug 25 - Sat, Aug 29
Frontier Logo
3:34 pm - 3:19 pm
DTW
-
SJU
23h 45m
2 stops
Frontier Logo
9:03 am - 5:39 pm
SJU
-
DTW
8h 36m
1 stop
$351Frontier
Mon, Sep 21 - Mon, Oct 5
Frontier Logo
11:00 am - 11:38 pm
DTW
-
SJU
12h 38m
1 stop
Frontier Logo
3:00 am - 11:54 am
SJU
-
DTW
8h 54m
1 stop
$352Frontier
Fri, Sep 25 - Sat, Oct 3
Frontier Logo
6:34 pm - 12:41 am
DTW
-
SJU
30h 07m
1 stop
Frontier Logo
10:48 pm - 11:55 am
SJU
-
DTW
13h 07m
1 stop
$353Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 12:41 am
DTW
-
SJU
30h 07m
1 stop
Frontier Logo
10:48 pm - 11:55 am
SJU
-
DTW
13h 07m
1 stop
$354Frontier
Thu, Aug 6 - Mon, Aug 10

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Frontier flights from Detroit to San Juan

Our best Frontier deals on Detroit to San Juan flight tickets
Frontier
Sep 18
DTW11:58 amDetroit Metropolitan Wayne County
11h 59m
1 stop
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU5:12 pmSan Juan Luis Munoz Marin Intl
21h 27m
2 stops
DTW2:39 pmDetroit Metropolitan Wayne County
$345
Frontier
Sep 18
DTW11:58 amDetroit Metropolitan Wayne County
11h 59m
1 stop
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU5:12 pmSan Juan Luis Munoz Marin Intl
19h 55m
1 stop
DTW1:07 pmDetroit Metropolitan Wayne County
$346
Frontier
Aug 3
DTW6:10 amDetroit Metropolitan Wayne County
31h 50m
2 stops
SJU2:00 pmSan Juan Luis Munoz Marin Intl
Aug 7
SJU10:48 pmSan Juan Luis Munoz Marin Intl
13h 07m
1 stop
DTW11:55 amDetroit Metropolitan Wayne County
$347

JetBlue flights from Detroit to San Juan

Our best JetBlue deals on Detroit to San Juan flight tickets
JetBlue
Aug 25
DTW6:05 amDetroit Metropolitan Wayne County
17h 53m
2 stops
SJU11:58 pmSan Juan Luis Munoz Marin Intl
Sep 9
SJU9:30 amSan Juan Luis Munoz Marin Intl
14h 25m
2 stops
DTW11:55 pmDetroit Metropolitan Wayne County
$359
JetBlue
Aug 11
DTW6:05 amDetroit Metropolitan Wayne County
17h 53m
2 stops
SJU11:58 pmSan Juan Luis Munoz Marin Intl
Aug 18
SJU6:00 amSan Juan Luis Munoz Marin Intl
17h 59m
2 stops
DTW11:59 pmDetroit Metropolitan Wayne County
$380

momondo 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, momondo users made 832,500 searches. Data last updated July 14, 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

Price

Cheapest round-trip

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 9/18

11:58 am-11:57 pm

1 stop11h 59m

San Juan Luis Munoz Marin Intl

Sat 9/26

5:12 pm-2:39 pm

2 stops21h 27m

$345

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 9/18

11:58 am-11:57 pm

1 stop11h 59m

San Juan Luis Munoz Marin Intl

Sat 9/26

5:12 pm-1:07 pm

1 stop19h 55m

$346

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 8/3

6:10 am-2:00 pm

2 stops31h 50m

San Juan Luis Munoz Marin Intl

Fri 8/7

10:48 pm-11:55 am

1 stop13h 07m

$347

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Wed 9/2

6:05 am-11:58 pm

2 stops17h 53m

San Juan Luis Munoz Marin Intl

Tue 9/15

3:00 am-5:39 pm

1 stop14h 39m

$348

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 9/18

11:00 am-11:38 pm

1 stop12h 38m

San Juan Luis Munoz Marin Intl

Sat 9/26

5:12 pm-1:07 pm

1 stop19h 55m

$349

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Tue 8/25

1:40 pm-12:56 am

1 stop11h 16m

San Juan Luis Munoz Marin Intl

Sat 8/29

6:35 am-5:22 pm

1 stop10h 47m

$350

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Mon 9/21

3:34 pm-3:19 pm

2 stops23h 45m

San Juan Luis Munoz Marin Intl

Mon 10/5

9:03 am-5:39 pm

1 stop8h 36m

$351
Quickest round-trip

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Fri 9/25

11:00 am-11:38 pm

1 stop12h 38m

San Juan Luis Munoz Marin Intl

Sat 10/3

3:00 am-11:54 am

1 stop8h 54m

$352

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Thu 8/6

6:34 pm-12:41 am

1 stop30h 07m

San Juan Luis Munoz Marin Intl

Mon 8/10

10:48 pm-11:55 am

1 stop13h 07m

$353

DetroitSan Juan

DTW - SJU

DTWSJU

Detroit Metropolitan Wayne County

Thu 8/6

6:34 pm-12:41 am

1 stop30h 07m

San Juan Luis Munoz Marin Intl

Mon 8/10

10:48 pm-11:55 am

1 stop13h 07m

$354

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Detroit to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Detroit and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in September, then April is your next best option. Flight prices from Detroit to San Juan during April average around $88.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Detroit to San Juan is on a Monday when prices can be found for as low as $560. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $677.

What is the cheapest Detroit to San Juan flight route?

Fly from Detroit Metropolitan Wayne County to San Juan Luis Munoz Marin Intl for the best Detroit - San Juan flight prices

How far in advance should I book a flight from Detroit to San Juan?

You are more likely to see cheaper flights to San Juan from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $409 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Detroit for as low as $343 on momondo.

What cabin class options are available on Detroit to San Juan flights?

There are 4 cabin classes available to choose from on Detroit to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Detroit to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Detroit to San Juan

Fastest flight time

4h 21m

Direct flights

Every day

Airports in San Juan

2 airports
The fastest flight from Detroit to San Juan takes 4h 21m
Direct flights go from Detroit to San Juan every day.
There are 2 airports in San Juan. From Detroit there are direct flights to San Juan Luis Munoz Marin Intl (SJU).
Search flight deals

Frequently asked questions about flying from Detroit to San Juan

  • How far is Detroit to San Juan by plane?

    The distance between Detroit and San Juan is about 1924.3 mi. 4h 21m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Detroit to San Juan?

    Prices for flights from Detroit to San Juan are updated daily.

  • How many operators does momondo search for flights from Detroit to San Juan?

  • How old do you have to be to fly from Detroit to San Juan?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Detroit to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The travel and health documents you'll need for your trip to San Juan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Detroit to San Juan

Compare and see reviews for airlines that fly from Detroit to San Juan with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $176Free CancellationRating
5.6
2,813 reviews
Search Frontier flights
DeltaPriceFrom $202Free CancellationRating
7.8
8,467 reviews
Search Delta flights
JetBluePriceFrom $211Free CancellationRating
7.1
3,009 reviews
Search JetBlue flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,987 reviews
Search United Airlines flights
American AirlinesPriceFrom $329Free CancellationRating
7.1
11,810 reviews
Search American Airlines flights
SouthwestPriceFrom $394Free CancellationRating
8.0
4,249 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Detroit to San Juan?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Detroit to San Juan for you.

Can I find flights from Detroit to San Juan with flexible booking policies on momondo?

All flight searches from Detroit to San Juan on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Detroit to San Juan?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from Detroit.

I’m not ready to book a flight from Detroit to San Juan right now. Can momondo alert me if prices change?

Price alerts on flights to San Juan from Detroit are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport