Cheap Flights from Green Bay (GRB) to San Juan (SJUA)

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Flight deals from Green Bay to San Juan

Looking for a cheap last-minute deal or the best return flight from Green Bay Airport to San Juan? If you want to travel next month, return fares start from $955. Find the lowest prices on one-way and return tickets right here.

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 August.

Green Bay to San Juan: Flight information

The things to know before you go.
Cheapest flight found$654
Cheapest month to flyAugust

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 $654. 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 $654.
As of June 2026, there are no flights flying from Green Bay to San Juan.
The cheapest month to fly from Green Bay to San Juan is usually August.
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 $654.
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 Friday, 21 August 2026.
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 June, the average temperature is usually around 27°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.

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

  • Green Bay Austin Straubel International Airport is located in Green Bay. Based in the UTC-4 timezone, San Juan is two hours ahead of Green Bay.

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

  • Travelling over a peak time such as November? Public holidays and other high seasons can lead to longer lines at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before a domestic departure.

  • Stopovers are the perfect opportunity to take a break from travelling and maybe even tick a new city off your list. When browsing for plane tickets from GRB to San Juan, deselect the 'Direct flights only' box to see where you can stop along the way. Here are some popular options to consider:

    • Chicago O'Hare International Airport (ORD)

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Minneapolis-Saint Paul International Airport (MSP)

  • Located around 10 kilometres from central Green Bay, GRB can be reached in about 15 minutes by car. The journey on public transport will take roughly 40 minutes.

  • Catching an early flight from Green Bay Austin Straubel International Airport to San Juan? Avoid rushing to the terminal (and catch some extra z's) by choosing one of these hotels near GRB:

  • 72% of flights taking off from Green Bay Austin Straubel International Airport reach their destination on time.

  • You'll find GRB at 2077 Airport Drive.

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

  • The best price we've found for a one-way Green Bay Austin Straubel International Airport to San Juan flight is $632. The cheapest price for a return flight is $654. Bear in mind fares can change due to availability at the time of booking.

  • To pick up cheap flights from GRB to San Juan, book ahead. Airlines tend to offer lower fares when flights are first released.

  • Finding cheap tickets from Green Bay Austin Straubel International Airport to San Juan is easier if you can be flexible with your dates. Use the 'Whole month' search function to get the lowest fares across the month and bag a sweet deal.

  • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you as soon as there's an even bigger deal on cheap flights from GRB to San Juan.

  • Snag an affordable flight from Green Bay Austin Straubel International Airport to San Juan with the help of our filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to central San Juan takes around 20 minutes to reach by car. The centre is roughly 11 kilometres away.

  • It takes around 1 hour when travelling by public transport.

  • Look into staying at a hotel near SJU if you're coming in on a late flight from Green Bay Austin Straubel International Airport to San Juan. Pick one of these accommodation options and make your first night all about rest:

  • Reserving your vehicle from Luis Munoz Marin International Airport about two weeks before your flight from GRB to San Juan can help you secure the lowest rate.

Best time to go to San Juan

  • March is the busiest month for flights from Green Bay Austin Straubel International Airport to San Juan. To escape the crowds, visit San Juan in December.

  • Before booking a Green Bay Austin Straubel International Airport to San Juan plane ticket, think about the kind of weather forecast you're hoping for. August is the warmest month in San Juan, with temperatures ranging from 24ºC (75ºF) to 32ºC (90ºF).

  • February sees average temperatures of between 21ºC (70ºF) and 28ºC (82ºF). Look for a cheap ticket from GRB to San Juan around that time if you like cooler conditions.

More about San Juan

  • Once you've booked your flight from Green Bay Austin Straubel International Airport to San Juan, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring San Juan:

  • Esperanza Beach and Balneario El Escambron are just the start of the top attractions to add to your San Juan must-do list. Keep the adventure rolling by checking out Escambron Green.

Explore more of Puerto Rico

  • San Juan has plenty going for it, but there are so many other parts of Puerto Rico waiting to be explored. About 113 kilometres west of San Juan, a visit to Aguadilla will keep you busy. Start with leading sights like Silla Aguadilla, Bridges Surf Beach and Playa Rompe Olas.

  • If you want to check out another great destination in Puerto Rico, consider Isabela, about 105 kilometres west of San Juan. Playa montones, Shore Island Beach and Guajataca Forest Reserve are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.