The cheapest times to fly from SJU to GFK are

  • January 8th to March 11th (except the week of February 5th)
  • April 16th to June 10th
  • October 15th to November 11th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SJU to GFK is late January and early February. Prices can be as high as $1828 for Sunday flights during early January, or as low as $896 for Tuesday flights around late January and early February.


When to Fly to Grand Forks

Flying from San Juan, PR (SJU) to Grand Forks, ND (GFK) will usually cost between $896 to $1437 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $896. Due to high demand the most expensive time to fly is early January, with an average price of $1292. Planning your trip to low-cost times can easily save you $396 on economy flights and even more on first-class flights. Generally, any price below $956 can be considered a good price for a round-trip SJU to GFK flight.

See below for a graph of average weekly prices for the SJU to GFK route. All prices are for round-trip tickets in USD.

SJU to GFK Flight Prices

Compared to other flights, the SJU to GFK flight is priced close to the average and costs slightly more than the average flight leaving from San Juan. The average price per mile (for a direct flight) is $0.22, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $316 (25%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $927. Return trip prices are from the GFK to SJU flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SJU to GFK can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 49 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SJU to GFK while comparing.

Destination alternative #1: Hector International Airport (FAR) in Fargo, ND

  • 73 miles (117 km) away from GFK
  • Usually 31.38% less expensive than GFK
  • 1-layover flights available

See SJU to FAR flights


Flight Hacking SJU to GFK

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SJU to GFK — but Champion Traveler does!

Hack #1: Minneapolis, MN (SJU > MSP > GFK)

  • Price for both tickets: $711
  • Average savings: $246 (25.68%)

See SJU to MSP flights

Hack #2: Chicago, IL (SJU > ORD > GFK)

  • Price for both tickets: $751
  • Average savings: $205 (21.44%)

See SJU to ORD flights

Hack #3: Philadelphia, PA (SJU > PHL > GFK)

  • Price for both tickets: $756
  • Average savings: $200 (20.92%)

See SJU to PHL flights


Flight Questions Answered

Still have questions about flying from SJU to GFK? We’ve got answers.

Which airlines fly this route?

You can find 2 major airlines flying this route most often: Delta, United, and potentially more during busy seasons.

How far away is it from Grand Forks International Airport to Luis Munoz Marin International Airport?

The distance between the two airports is roughly 2685 miles or 4321 kilometers.

How long does it take to fly from SJU to GFK?

The real-world flight time for a nonstop SJU to GFK flight is about 5 hour 49 minutes.

How many flights go between San Juan, PR and Grand Forks, ND?

It depends on the day of the week and the date, but a typical day might have around 19 available flights from SJU to GFK.


Airport Location Info


Departing Airport

Origination code SJU
Origination airport name Luis Munoz Marin International Airport
City San Juan, PR
Country the United States
Latitude 18.4
Longitude -66

Return Airport

Destination code GFK
Destination airport name Grand Forks International Airport
City Grand Forks, ND
Country the United States
Latitude 47.9
Longitude -97.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.