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10/7/2026 Find Cheap Flights from St Thomas to San Juan (STT to SJU)
STT - Cyril E King Airport SJU - San Juan 
Find Cheap Flights from St Thomas to San Juan (STT to SJU)
Fares Starting from $137
STT - Cyril E King Airport SJU - San Juan Great deal! This is the lowest price we've seen for this one way route in the last 12 hours. Prices may change and aren't guaranteed for all flights or dates. Click on the price to continue your search and check the latest available fare. Ref. id 202609~Ref:WGtayDySAkysAKHJZUPTEA
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Cheap Flights from St Thomas to San Juan - Compare & Book Our Best Deals
This route offers great flexibility for different travel plans. Browse one-way fares from $136.3, round-trip fares from $241.30, and other affordable options across different budgets. Compare flight choices, explore schedules, and book the best St Thomas to San Juan deals that fit your budget and travel preferences.
Top Airlines that fly from St Thomas to San Juan
Cheap Flight Deals from St Thomas to San Juan
STT Cyril E King Airport Wed, Oct 7
SJU San Juan
from $137
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STT Cyril E King Airport Sun, Oct 11
SJU San Juan
from $137
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STT Cyril E King Airport Sat, Oct 17
SJU San Juan
from $137
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STT Cyril E King Airport Sun, Oct 18
SJU San Juan
from $137
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STT Cyril E King Airport Tue, Oct 20
SJU San Juan
from $137
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STT Cyril E King Airport Wed, Oct 21
SJU San Juan
from $137
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STT Cyril E King Airport Thu, Oct 22
SJU San Juan
from $137
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STT Cyril E King Airport Sat, Oct 24
SJU San Juan
from $137
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STT Cyril E King Airport Tue, Oct 27
SJU San Juan
from $137
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STT Cyril E King Airport Thu, Oct 8
SJU San Juan
from $137
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*All fares above were last found on: Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202609~Ref:WGtayDySAkysAKHJZUPTEA
When is the Cheapest Time to Book Flights from STT to SJU?
Explore data-powered insights and trends for flights from St Thomas to San Juan. Discover average fares, cheap months to fly, when to book, and plan smarter.
What’s the cheapest day of the week to fly from St Thomas to San Juan?‡
What is the cheapest month to fly from St Thomas to San Juan?‡
‡This information is based on historical data from the last 365 days.
Finding Affordable Flights from St Thomas to San Juan
- Plan Ahead - One of the keys to securing cheap flights from St Thomas to San Juan is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
- Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
- Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from St Thomas to San Juan drop, giving you the opportunity to grab cheap deals.
- Consider Nearby Airports - If San Juan has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
- Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.
When should I book flights from STT to SJU? ‡
‡Got flexible travel dates? Use our flight data from the past year to discover ideal time to fly from St Thomas to San Juan. Find out which months and days typically offer lower fares and let CheapOair search for the best options.
CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip
‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.
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Cheap Flights from St Thomas to San Juan
Looking for flights from St Thomas (STT) to San Juan (SJU)? Find affordable air travel deals on CheapOair and save big on air tickets online. San Juan has loads of impressive attractions to catch the attention of tourists across the world !
San Juan, the capital of Puerto Rico is a popular tourist location attracting nearly five million holidaymakers every year. Visitors would get bowled over by colonial splendor, magnificent architecture, ancient cathedrals, lovely museums, and historical landmarks of the place. Start your trip with impressive San Juan National Historic Site. Visit Castillo San Cristobal, one of the largest Spanish fortresses in the world. Also explore Alcadia and San Jose Church etc. To reach St Juan (SJU) from St Thomas (STT) you can avail the services of Seaborne Airlines and Jetblue Airways. The flight covers a distance of over 68 miles in approximately 40 minutes.Recent posts View all posts
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