$85 Find Cheap Flights from St. Louis to San Juan - Compare and Save

These are the earliest and latest flight times available from St. Louis to San Juan Luis Munoz Marin Intl Airport:

• Earliest: departs at 8:55 am and lands at 1:15 pm
• Latest: departs at 12:05 pm and lands at 4:25 pm.

The flight takes about 4h 20m.

Three cabin classes are available on flights from St. Louis to San Juan Luis Munoz Marin Intl Airport:

• Economy Class
• Premium Economy Class
• First Class

A nonstop flight from St. Louis to San Juan Luis Munoz Marin Intl Airport takes 4h 20m, covering 2,024 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Round-trip flights from St. Louis to San Juan Luis Munoz Marin Intl Airport range from $335 to $597, with an average of $445 over the past 12 months. Anything below $335 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 24% above the $445 route average. Book 12 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $355 round-trip via Houston George Bush Intcntl (IAH), compared to $467 for nonstop.

Southwest is the only airline operating St. Louis to San Juan Luis Munoz Marin Intl Airport flights. 70% of its flights are on time.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 family is used most often on this route, operated mainly by JetBlue and Southwest. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

One-way fares from St. Louis to San Juan Luis Munoz Marin Intl Airport are currently lower than usual. Average one-way flight prices are about $184, which is 30% below the typical average for this route.

San Juan Luis Munoz Marin Intl Airport (SJU) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

• Routes Car & Truck Rentals
• U-Save
• Hertz
• Payless
• Europcar

Flights from St. Louis to San Juan Luis Munoz Marin Intl Airport usually depart from Lambert-St Louis (STL) and arrive at San Juan Luis Munoz Marin Intl (SJU).

Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the St. Louis to San Juan Luis Munoz Marin Intl Airport route, 30% of flights were delayed in the past 3 months, with delays averaging 1h 34m.

One-stop flights from St. Louis to San Juan Luis Munoz Marin Intl Airport most commonly connect through:

• Orlando (MCO) - 56% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 20% of one-stop connections
• Chicago O'Hare Intl (ORD) - 5% of one-stop connections
• Charlotte Douglas (CLT) - 5% of one-stop connections

Yes. Flexible dates can save you up to 24% on flights from St. Louis to San Juan Luis Munoz Marin Intl Airport. Wednesday is the cheapest departure day at $393 round-trip on average, while Friday is the most expensive at $513, a difference of $120.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Southwest operates flights between St. Louis and San Juan Luis Munoz Marin Intl Airport.

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 7h, compared with 7h 16m via Tampa (TPA) and 7h 24m via Baltimore/Washington (BWI).

San Juan Luis Munoz Marin Intl Airport is 1 hour ahead of St. Louis (Atlantic Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Juan Luis Munoz Marin Intl Airport are Viejo San Juan, Condado Beach and Puerto Rico Convention Center. These are among the most viewed places in San Juan Luis Munoz Marin Intl Airport on KAYAK.

Among airlines operating St. Louis to San Juan Luis Munoz Marin Intl Airport flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.