Cheap flights from St. Louis (STL) to Luis Munoz Marin Intl (SJU)

STL — SJU
May 29 — Jun 51

How to find the cheapest flight from St. Louis to Luis Munoz Marin Intl

All the information you need to plan the best STL to SJU flight in 2022: compare St. Louis to Luis Munoz Marin Intl flight prices with the expected peak season, weather and rainfall in Luis Munoz Marin Intl.

STL - SJU

Price

$336 - $655

SJU

Temperature

77 - 82.4 °F

SJU

Rainfall

2.2 - 6.1 inches

Popular inDecemberHigh demand for flights, 40% potential price rise
Cheapest inAugustBest time to find cheap flights, 14% potential price drop
Round-trip from$336From Lambert-St Louis to San Juan Luis Munoz Marin Intl
One-way from$270One-way flight from Lambert-St Louis to San Juan Luis Munoz Marin Intl

How far in advance should I book a flight from St. Louis to San Juan Luis Munoz Marin Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 15 days in advance, which can save you up to 1% on flights from St. Louis to San Juan Luis Munoz Marin Intl Airport compared to booking the week you need them. Waiting 15 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $333. For sooner than that we have options available in the next 3 days from $342.

What is the cheapest month to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

August is one of the best times of the year to fly to San Juan Luis Munoz Marin Intl Airport from St. Louis. Prices for August average $391 per person but you can even find prices for as low as $165. The most expensive prices can be found in the month of December. Opting for a August flight can save you 67% on your journey compared to booking in December

When is the cheapest time to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport (STL - SJU)?

When flying from St. Louis to San Juan Luis Munoz Marin Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from St. Louis to Luis Munoz Marin Intl in May, June 2022

The best prices found for STL to SJU flights for May, June
Jun 28 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

10h 55m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

8h 18m
$375

Spirit Airlines

View Deal

Deal found 5/23/22

Jun 29 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

13h 22m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

20h 02m
$390

Frontier

View Deal

Deal found 5/23/22

Jun 29 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

7h 12m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

20h 02m
$407

Multiple Airlines

View Deal

Deal found 5/23/22

St. Louis to Luis Munoz Marin Intl 2022 flight deals

Cheap flights to Luis Munoz Marin Intl from St. Louis found for this year
Aug 26 - Aug 30
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

7h 18m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

8h 17m
$348

Spirit Airlines

View Deal

Deal found 5/23/22

Jul 5 - Jul 14
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

30h 28m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

7h 55m
$351

Frontier

View Deal

Deal found 5/22/22

Jul 6 - Jul 14
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

12h 51m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

7h 55m
$361

Multiple Airlines

View Deal

Deal found 5/21/22

Cheap American Airlines flights from St. Louis to Luis Munoz Marin Intl

Aug 30 - Sep 7
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

8h 48m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

14h 39m
$428

American Airlines

View Deal

Deal found 5/23/22

Sep 3 - Sep 8
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

9h 51m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

10h 59m
$430

American Airlines

View Deal

Deal found 5/21/22

Oct 10 - Oct 17
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

17h 52m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

10h 43m
$431

American Airlines

View Deal

Deal found 5/21/22

Cheap Frontier flights from St. Louis to Luis Munoz Marin Intl

Jul 5 - Jul 14
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

30h 28m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

7h 55m
$351

Frontier

View Deal

Deal found 5/22/22

Jul 1 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

30h 28m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

20h 02m
$386

Frontier

View Deal

Deal found 5/22/22

Jun 29 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

13h 22m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

20h 02m
$390

Frontier

View Deal

Deal found 5/23/22

Last minute flights from St. Louis to Luis Munoz Marin Intl

Late deals on return flights to Luis Munoz Marin Intl from St. Louis, departing today and this week
May 29 - Jul 5
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

37h 09m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

8h 18m
$452

Spirit Airlines

View Deal

Deal found 5/23/22

May 29 - Jun 2
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

37h 09m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

2 stops

24h 08m
$460

Spirit Airlines

View Deal

Deal found 5/23/22

May 29 - Jun 28
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

37h 09m
SJU

San Juan Luis Munoz Marin Intl

STL

Lambert-St Louis

1 stop

20h 02m
$467

Multiple Airlines

View Deal

Deal found 5/23/22

One-way flights to San Juan Luis Munoz Marin Intl from St. Louis

The cheapest one-way flights from St. Louis to Luis Munoz Marin Intl
Sep 18
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

6h 41m
$183

Spirit Airlines

View Deal

Deal found 5/22/22

Jul 13
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

1 stop

10h 55m
$188

Spirit Airlines

View Deal

Deal found 5/21/22

Jul 13
STL

Lambert-St Louis

SJU

San Juan Luis Munoz Marin Intl

2 stops

29h 39m
$206

Spirit Airlines

View Deal

Deal found 5/21/22

Related info for your journey

Useful info, stats and facts about St. Louis to Luis Munoz Marin Intl flights.

What airport do you fly from for flights from St. Louis to San Juan Luis Munoz Marin Intl?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to San Juan Luis Munoz Marin Intl. On average, Lambert-St Louis has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 10 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Which airlines flying from Lambert-St Louis to San Juan Luis Munoz Marin Intl have flexible cancellations due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to San Juan Luis Munoz Marin Intl have new flexible policies in place due to COVID-19. American Airlines, Spirit Airlines, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from St. Louis to San Juan Luis Munoz Marin Intl Airport for under $400 on Cheapflights?

Yes, there are multiple flights from St. Louis to San Juan Luis Munoz Marin Intl Airport for under $400. The cheapest flight booked recently is on Spirit Airlines for just $348, but on average you can expect to pay $382.

Are there last-minute flights available from St. Louis to San Juan Luis Munoz Marin Intl Airport for under $500?

There are currently 20+ open flights from St. Louis to San Juan Luis Munoz Marin Intl Airport within the next 7 days for less than $500.

What are the cheapest airlines flying from St. Louis to San Juan Luis Munoz Marin Intl Airport round-trip?

According to our current data, Spirit Airlines ($348), and Frontier ($351) offers the cheapest pricing from St. Louis to San Juan Luis Munoz Marin Intl Airport. Spirit Airlines is 11% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to San Juan Luis Munoz Marin Intl Airport one-way?

$183 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on American Airlines and Frontier, with prices starting from $214 and $223, respectively.

What are the most popular airlines that fly from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Consider Major Airline, American Airlines or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.

What are the cheapest flights from St. Louis to San Juan Luis Munoz Marin Intl Airport?

Looking at all options, your cheapest flight can be booked for $105. While the most popular route (Lambert-St Louis - San Juan Luis Munoz Marin Intl) can be booked for $363 on average our data indicates $712 when flying from St. Louis to San Juan Luis Munoz Marin Intl Airport.

Alternative routes for St. Louis to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Luis Munoz Marin Intl

The chart below displays the airlines Cheapflights users traveling from St. Louis to Luis Munoz Marin Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$14Average$18FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$97Average$212FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Spirit AirlinesCheapest$129Average$297FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
DeltaCheapest$195Average$476FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights