The cheapest times to fly from SJU to DLH are

  • January 8th to February 25th
  • April 16th to May 13th
  • July 9th to August 5th (except the week of July 23rd)
  • 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 DLH is late January and early February. Prices can be as high as $1246 for Sunday flights during early January, or as low as $509 for Tuesday flights around late January and early February.


When to Fly to Duluth

Flying from San Juan, PR (SJU) to Duluth, MN (DLH) will usually cost between $599 to $916 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 $607. Due to high demand the most expensive time to fly is early January, with an average price of $875. Planning your trip to low-cost times can easily save you $268 on economy flights and even more on first-class flights. Generally, any price below $676 can be considered a good price for a round-trip SJU to DLH flight.

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

SJU to DLH Flight Prices

Compared to other flights, the SJU to DLH flight is cheaper than the average and costs about as much as the average flight leaving from San Juan. The average price per mile (for a direct flight) is $0.17, 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 $164 (20%) 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 $636. Return trip prices are from the DLH 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 DLH 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 25 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 DLH while comparing.

Destination alternative #1: Minneapolis-St Paul International Airport (MSP) in Minneapolis, MN

  • 144 miles (232 km) away from DLH
  • Usually 36.17% less expensive than DLH
  • Nonstop flights available

See SJU to MSP flights

Destination alternative #2: Chippewa Valley Regional Airport (EAU) in Eau Claire, WI

  • 141 miles (227 km) away from DLH
  • Usually 4.59% less expensive than DLH
  • 1-layover flights available

See SJU to EAU flights


Flight Hacking SJU to DLH

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 DLH — but Champion Traveler does!

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

  • Price for both tickets: $616
  • Average savings: $61 (8.95%)

See SJU to MSP flights

Hack #2: Tampa, FL (SJU > TPA > DLH)

  • Price for both tickets: $649
  • Average savings: $27 (3.99%)

See SJU to TPA flights

Hack #3: Boston, MA (SJU > BOS > DLH)

  • Price for both tickets: $660
  • Average savings: $16 (2.37%)

See SJU to BOS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 3 major airlines flying this route most often: Delta, United, Virgin Atlantic, and potentially more during busy seasons.

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

The distance between the two airports is roughly 2460 miles or 3959 kilometers.

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

The real-world flight time for a nonstop SJU to DLH flight is about 5 hour 25 minutes.

How many flights go between San Juan, PR and Duluth, MN?

It depends on the day of the week and the date, but a typical day might have around 21 available flights from SJU to DLH.


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 DLH
Destination airport name Duluth International Airport
City Duluth, MN
Country the United States
Latitude 46.8
Longitude -92.2


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.