Cheap Flights from Green Bay to San Juan

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Find the cheapest month to fly from Green Bay to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Green Bay to San Juan flights are currently cheapest in December.

Alternative Green Bay to San Juan routes

Looking for the cheapest, fastest or easiest route from Green Bay to San Juan? You could fly into the following airports instead.

Green Bay to San Juan: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 918
Cheapest month to flyDecember

Finding cheap flights from Green Bay to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Green Bay to San Juan is ر.ق.‏ 1,450. 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.
Currently, there are no airlines that fly direct from Green Bay to San Juan. But we found flights with one or more stops from ر.ق.‏ 1,450.
As of December 2025, there are no flights flying from Green Bay to San Juan.
The cheapest month to fly from Green Bay to San Juan is usually December.
If you're flying from Green Bay Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from ر.ق.‏ 1,450.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Green Bay Airport to San Juan on Sunday, 7 December 2025.
No airlines currently offer direct flights between Green Bay Airport and San Juan. Most routes have one or more stops.
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 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.
In December, the average temperature is usually around 25°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, United offers the cheapest flight tickets to San Juan.

Travelling from Austin Straubel International Airport (GRB) to San Juan: what you need to know

  • The timezone in San Juan is UTC-4. The city is one hour ahead of Green Bay, where Austin Straubel International Airport is located.

  • Give yourself enough time to catch your GRB to San Juan flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • If you're heading away during a major holiday or another peak period, give yourself more time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Check-in and security lines will be longer.

  • Think about adding a stopover to potentially save on your flight ticket from GRB to San Juan. All you need to do is deselect 'Direct flights only' during your search. Break up your journey by stopping at one of these airports:

    • O'Hare International Airport (ORD)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Minneapolis-St. Paul International Airport (MSP)

  • To reach GRB from central Green Bay, it'll take around 15 minutes if you're travelling by car. It's roughly 10 kilometres from the airport to the city centre.

  • Want a relaxed start to your journey? Stay near GRB. Whether you're catching an early flight from Austin Straubel International Airport to San Juan or want to avoid feeling rushed, these hotels put convenience first:

  • Of the flights that depart from Austin Straubel International Airport, 74.0% arrive on time at their destination.

  • You'll find GRB at 2077 Airport Drive.

How to find the cheapest flights from Austin Straubel International Airport (GRB) to San Juan

  • ر.ق.‏ 918 is currently the best price for a one-way Austin Straubel International Airport to San Juan flight. Return flight tickets start at ر.ق.‏ 1,450. These fares may change depending on demand and availability.

  • To pick up cheap flights from GRB to San Juan, book as early as possible. Airlines tend to offer their most competitively priced fares when tickets first go on sale.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the lowest price across each month when searching for an Austin Straubel International Airport to San Juan ticket.

  • There's no need to check back constantly to find out if fares have dropped when you set up a Price Alert. We'll let you know when there's an even better deal on cheap flights from GRB to San Juan.

  • Select your ideal arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Austin Straubel International Airport to San Juan by 'Best,' 'Fastest' or 'Cheapest.'

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to central San Juan takes about 10 minutes to reach by car. The centre is roughly 8 kilometres away.

  • When travelling by public transport, expect a journey time of about 55 minutes.

  • If you're arriving on a late flight from Austin Straubel International Airport to San Juan, nothing beats the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and sleeping not long after at one of these hotels near SJU:

  • Go wherever you want, whenever you want with a Luis Munoz Marin International Airport rental car. Book your wheels from Sixt, Ace Rent a Car or U-Save and find adventure across San Juan and beyond.

  • For the best deal, reserve your ride from Luis Munoz Marin International Airport around two weeks in advance of your flight from GRB to San Juan.

Fernando Luis Ribas Dominicci Airport (SIG)

  • The centre of San Juan is about 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). Once your flight from Austin Straubel International Airport to San Juan has hit the runway and you've made your way to arrivals, the drive should take about 15 minutes.

  • If you're travelling on public transport, it'll take around 1 hour.

  • You'll find some comfortable places to call home for the night near SIG. Kick back and get cosy after your GRB to San Juan flight at any of these well-located options:

Best time to go to San Juan

  • Travel to San Juan in peak season if you like a lively atmosphere, but remember that prices are usually higher. Alternatively, book your flights from Austin Straubel International Airport to San Juan in the off-season when prices are cheaper and crowds are smaller.

  • When booking your Austin Straubel International Airport to San Juan flight ticket, think about the kind of weather you prefer. September is the warmest month in San Juan, with temperatures ranging from 23ºC to 33ºC.

  • Search for cheap tickets from GRB to San Juan in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 20ºC and 28ºC on average.

More about San Juan

  • Start your San Juan trip off on the right foot by choosing the ideal place to stay. Once you've booked your flight from Austin Straubel International Airport to San Juan, browse our selection of hotels including:

  • Every great adventure has to include a little sightseeing. La Garita del morro de san juan bahia, Castillo San Felipe del Morro and Fortaleza Street are must-visits when exploring San Juan.

Explore more of Puerto Rico

  • Aguadilla is just one of the many places in Puerto Rico waiting to be discovered once you've seen the sights of San Juan. Around 113 kilometres away to the west, top sights here include El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • If you want to check out another corner of Puerto Rico, consider Isabela, roughly 105 kilometres west of San Juan. Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania are among its highlights.

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