Cheap Flights from Detroit Wayne County (DTW) to San Juan Luis Munoz Marin (SJU)

Compare Detroit Wayne County to San Juan Luis Munoz Marin flight deals

Find the cheapest month or even day of the year to fly to San Juan Luis Munoz Marin

Book the best San Juan Luis Munoz Marin fare with no extra fees

Flight deals from Detroit Wayne County to San Juan Luis Munoz Marin

Looking for a cheap last-minute deal or the best return flight from Detroit Wayne County Airport to San Juan Luis Munoz Marin Airport? If you want to travel next month, return fares start from £264. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Detroit Wayne County to San Juan Luis Munoz Marin

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Detroit Wayne County to San Juan Luis Munoz Marin flights are currently cheapest in September.

Direct flights from Detroit Wayne County to San Juan Luis Munoz Marin

Detroit to San Juan: Flight information

The things to know before you go.
Cheapest flight found£102
Cheapest month to flySeptember
Average flight time4 hrs, 25 mins
Most popular airlineDelta
Average flights per week14

Finding cheap flights from Detroit Wayne County to San Juan Luis Munoz Marin: Frequently asked questions

The best price we found for a return flight from Detroit Wayne County to San Juan Luis Munoz Marin is £216. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 25 minutes is the average flight time from Detroit Wayne County to San Juan Luis Munoz Marin.
Delta and WestJet fly direct from Detroit Wayne County to San Juan Luis Munoz Marin.
As of May 2026, there are 14 flights per week flying from Detroit Wayne County to San Juan Luis Munoz Marin.
The cheapest month to fly from Detroit Wayne County to San Juan Luis Munoz Marin is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Detroit Wayne County Airport to San Juan Luis Munoz Marin Airport on Tuesday, 25 August 2026.
Yes – the average flight time is 4 hours and 25 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan Luis Munoz Marin but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and Delta offer the cheapest flight tickets to San Juan Luis Munoz Marin.

Flying from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin International Airport (SJU): what you need to know

  • Book a direct flight from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport and you'll be in the air for an average of 4 hours 30 minutes.

  • Detroit and San Juan share the UTC-4 timezone. This means you won't have to change your watch on arrival.

  • Every week, there are eight Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport flights. If you want to take off early, take the 08:35 Delta Air Lines flight. If you'd rather make the most of your time before you fly, the last departure is at 10:08 with Delta Air Lines.

  • Give yourself plenty of time to make your DTW to SJU flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak month such as August? School holidays and other high seasons can mean longer queues at airport checkpoints. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

  • Jetting into San Juan (and then seeing more of Puerto Rico!) is a snap with Delta Air Lines. This popular airline has direct flights from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport.

  • The airline with the highest number of bookings on this route is Delta Air Lines.

  • The most punctual carrier that operates DTW to SJU flights is Delta Air Lines. Its services land as planned 69.62% of the time.

  • Consider adding a stopover when booking your ticket from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport. Simply uncheck 'Direct flights only' to break up your journey, or visit a new city along the way. Here are some options between DTW and SJU:

    • Washington Dulles International Airport

    • Baltimore/Wash International Thurgood Marshall Airport

    • Charlotte Douglas International Airport

How to find the cheapest flights from Detroit Metropolitan Wayne County Airport (DTW) to Luis Munoz Marin International Airport (SJU)

  • £102 is the best price for a one-way Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport flight. Return flights start at £216. These fares can change based on availability and demand.

  • Get cheap tickets from DTW to SJU by booking six months ahead. According to our research, that's the sweet spot for picking up a bargain.

  • Plan your trip for May. That's the cheapest month for flights from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the cheapest price across every month.

  • Snapping up cheap flights from DTW to SJU is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know when a lower fare pops up.

  • Tailor your flights with filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport.

Handy information about Detroit Metropolitan Wayne County Airport (DTW)

  • You'll find DTW at 1 Detroit Metro Airport.

  • Of the departures from Detroit Metropolitan Wayne County Airport, 75.1% land on schedule at their destination.

  • Central Detroit to Detroit Metropolitan Wayne County Airport is approximately 20 miles. Depending on traffic, it'll take you about 25 minutes to get there if you're catching a cab, ride-sharing or driving.

  • You can expect a trip time of roughly 1 hour 10 minutes when using public transport.

  • Catching an early flight from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport? Avoid rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels close to DTW:

Arriving at Luis Munoz Marin International Airport (SJU)

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

  • Luis Munoz Marin International Airport is approximately 5 miles from the centre of San Juan. Driving there takes about 10 minutes.

  • If you're taking public transport, expect a journey time of around 55 minutes.

When to fly to Luis Munoz Marin International Airport (SJU)

  • July is the most popular month for flights from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport. To avoid the crowds, travel to San Juan in May.

  • Lock in your flight from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport for September if you want to explore San Juan during its warmest month. You can expect temperatures of between 23ºC (73ºF) and 33ºC (91ºF).

  • February has average temperatures of between 20ºC (68ºF) and 28ºC (82ºF). Look for cheap tickets from DTW to SJU around that time if you like cooler conditions.

Explore more of Puerto Rico

  • San Juan is easy to fall in love with, but there are so many other parts of Puerto Rico just waiting to be discovered. About 6 miles west of San Juan, a visit to Bayamon will fill your itinerary to the brim. Don't miss top attractions like Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • Carolina is another essential stop in Puerto Rico and is around 7 miles east of San Juan. No trip is complete without experiencing Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.