$1,229+ Cheap flights from Grand Forks (GFK) to San Juan
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
GFK — SJU
Jan 17 — Jan 241
1 adult, Economy
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Best flights from Grand Forks to San JuanDiscover carefully curated flight deals from Grand Forks to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
Discover carefully curated flight deals from Grand Forks to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:00 amGFK - SJU
1 stop8h 20mDelta
Sat 4/43:25 pmSJU - GFK
1 stop8h 45mDelta
Deal found 12/16![Delta logo]()
$1,229
Find flight deals from Grand Forks to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Grand Forks (GFK) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2025.
Round-trip from | $1,121 (Delta) |
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Cheapflights Fare Finder
Customize your flight search to find flights from Grand Forks to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Grand Forks to San Juan that are best for you.
Fly from
Grand Forks
Fly to
San Juan
Route
Depart
Return
Price
Grand ForksSan Juan
GFK - SJU
GFKSJU
Grand Forks
Sat 3/28
5:00 am-2:20 pm
1 stop8h 20m
San Juan Luis Munoz Marin Intl
Sat 4/4
3:25 pm-11:10 pm
1 stop8h 45m
$1,229
Best time to book a flight from Grand Forks to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Grand Forks with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Grand Forks to San Juan
What is the cheapest month to book a flight from Grand Forks to San Juan?
Currently, March is the cheapest month in which you can book a flight from Grand Forks to San Juan (average of $103). Flying from Grand Forks to San Juan in June is currently the most expensive (average of $569). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.