Salt Lake City to Luis Muñoz Marín
3117 miles great-circle distance, typically flown in 6h 40m with 3 airlines operating direct service from Salt Lake City (SLC) to Luis Muñoz Marín (SJU). Cheapest fares are usually in January (around $449 return), with peak prices in August (around $1347). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Salt Lake City
Salt Lake City International is Delta's principal mountain-region hub, completely rebuilt 2020–2024 with a single new concourse replacing the legacy 1960s terminals. TRAX Green Line light rail runs from the airport directly to downtown Salt Lake City in 25 minutes for $2.50. Delta operates over 90% of the schedule, making SLC essentially a Delta-monopoly hub for many destinations. International long-haul service includes Amsterdam, Paris CDG and seasonal Cancun/Mexico City through Delta and partner KLM.
Arriving in San Juan
San Juan's Luis Muñoz Marín is the busiest airport in the Caribbean and Puerto Rico's primary international gateway. The airport is 8 km east of Old San Juan; AMA bus T5 runs from the airport, but most travellers use rideshare or taxi (~$25 to Old San Juan). US domestic-status flights (no passport required for US citizens) make San Juan one of the easiest Caribbean destinations from any US hub.
Who flies SLC to SJU?
| Airline | IATA | Flight time | Cabin |
| Delta Air Lines | DL | 6h 40m | Economy |
| KLM | KL | 6h 40m | Economy |
| Air France | AF | 6h 40m | Economy |
3 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly SLC→SJU
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Salt Lake City to San Juan FAQs
Direct flights from Salt Lake City (SLC) to Luis Muñoz Marín (SJU) take approximately 6h 40m for the 3117-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $449. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
3 carriers operate direct service from Salt Lake City (SLC) to Luis Muñoz Marín (SJU): Delta Air Lines, KLM and Air France. Frequencies vary by season and carrier — Delta Air Lines typically operates the highest weekly count on this corridor.
No — Puerto Rico is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Luis Muñoz Marín (SJU) is the primary international airport for San Juan. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.