Cheap Seaborne Airlines Flights
Compare fares for this Puerto Rico and US Virgin Islands regional carrier, check baggage and seating details, and learn the best time to book to keep your fare low.
Get the Best Unpublished Fares and Save $100 Extra
or request an offerAbout Seaborne Airlines
Seaborne Airlines is a regional carrier founded in 2004 and based in San Juan, Puerto Rico, connecting the island to the US Virgin Islands and other nearby Caribbean destinations. The airline has faced financial challenges in recent years, including a Chapter 11 restructuring process, but continues to operate its core inter-island routes as of its most recent published schedules.
Why Search Seaborne Airlines Flights on AirlineTickets.Services
Compare fares, track prices, and book with confidence in one place.
Real-Time Fare Comparison
See Seaborne Airlines fares side by side with other carriers on the same route, updated as prices change.
Flexible Date Search
Shift your travel dates by a few days to reveal cheaper Seaborne Airlines fare classes automatically.
24/7 Booking Support
Get help with your Seaborne Airlines itinerary, changes, or questions any time, day or night.
Seaborne Airlines Route Network
Seaborne Airlines’ network centers on connecting San Juan to St. Croix, St. Thomas, and other nearby Caribbean destinations, filling an essential regional connectivity role for Puerto Rico and the US Virgin Islands.
Primary Hub
Luis Muñoz Marín International Airport, San Juan (SJU)
Luis Muñoz Marín International Airport (SJU) in San Juan is Seaborne Airlines’ primary hub, with seaplane operations also based at dedicated seaplane bases in St. Croix and St. Thomas.
Alliance & Partner Airlines
Seaborne Airlines is not a member of Star Alliance, oneworld, or SkyTeam and operates independently as a small regional Caribbean carrier.
Baggage, Seating & Onboard Amenities
A quick reference before you pack — always confirm exact allowances on your fare rules at booking, since they vary by route and cabin.
Carry-On & Personal Item
Given Seaborne’s small aircraft on many routes, including seaplanes, carry-on allowances are notably more restrictive than mainline jets — confirm size and weight limits before you fly.
Checked Baggage
Checked baggage allowance is limited by aircraft size on many routes — confirm the specific allowance for your route well before travel.
Excess Baggage Fees
Overweight, oversized, or extra bags typically incur a per-bag fee charged at check-in or online in advance — pre-paying online is usually cheaper than paying at the airport.
Seat Selection & Cabin Classes
Seaborne operates a mix of aircraft including DHC-6 Twin Otter seaplanes on its inter-island Caribbean routes, with a small-cabin, single-class configuration.
How to Find the Cheapest Seaborne Airlines Fares
Four habits that consistently lower what you pay.
Book in the Sweet-Spot Window
For most Seaborne Airlines routes, fares tend to be most competitive when booked several weeks to a few months ahead of departure, rather than at the last minute or extremely far out.
Fly Midweek and Off-Peak
Tuesday, Wednesday, and Saturday departures are usually cheaper than Friday or Sunday, and red-eye or early-morning flights often undercut peak daytime departures..
Set Fare Alerts
Track your route and let price-drop notifications do the watching, instead of checking manually every day.
Price-Tracking Tip
Compare a fixed date range over a week or two before deciding — single-day price checks can be misleading.
Compare a fixed date range over a week or two before deciding — single-day price checks can be misleading.
Use Flexible Date Search
Searching a date range instead of one fixed day often surfaces Seaborne Airlines fares that are noticeably lower just one or two days earlier or later.
Check-In & Day-of-Travel
Online Check-In
Online and mobile check-in generally opens 24–48 hours before departure, letting you select or confirm your seat and download your boarding pass in advance.
Airport Arrival Times
Arrive with enough buffer for check-in, bag drop, and security — this matters more on international Aegean Airlines routes than short domestic hops.
Domestic vs. International Cutoff
International check-in and bag-drop counters usually close earlier relative to departure than domestic ones, so double-check your specific route’s cutoff.
Frequently Asked Questions
Seaborne Airlines' IATA code is BB, with ICAO code SBS.
Luis Muñoz Marín International Airport (SJU) in San Juan is Seaborne Airlines' primary hub, with seaplane bases in St. Croix and St. Thomas.
Yes, Seaborne has gone through a Chapter 11 restructuring process amid financial challenges in recent years, though it has continued operating its core Caribbean routes — confirm current flight status directly given the airline's ongoing financial situation.
No, Seaborne is not a member of Star Alliance, oneworld, or SkyTeam, and operates as an independent regional carrier.
Yes, distinctively, Seaborne operates DHC-6 Twin Otter seaplanes on some of its short inter-island Caribbean routes, connecting to dedicated seaplane bases rather than conventional runways.
Allowances are more restrictive than mainline carriers given the small aircraft used on many routes — confirm specific limits for your route before you pack.
Checked bag allowance is limited by aircraft size on many routes — confirm the specific allowance for your route well in advance.
Yes, San Juan connections to St. Thomas and St. Croix in the US Virgin Islands are core routes for Seaborne, an important regional link for both islands.
Given the small cabin size on most flights, seat selection is generally limited or handled informally at check-in rather than through a standard seat map.
Booking ahead of peak Caribbean tourist season (winter months) tends to secure better availability and pricing, given limited seat capacity per flight.
Domestic Flight Cities
- Cheap Flights to Atlanta
- Cheap Flights to Denver
- Cheap Flights to Los Angeles
- Cheap Flights to Phoenix
- Cheap Flights to Baltimore
- Cheap Flights to Fort Lauderdale
- Cheap Flights to Miami
- Cheap Flights to San Diego
- Cheap Flights to Boston
- Cheap Flights to Honolulu
- Cheap Flights to New York
- Cheap Flights to San Francisco
- Cheap Flights to Chicago
- Cheap Flights to Houston
- Cheap Flights to Orlando
- Cheap Flights to Seattle
- Cheap Flights to Dallas
- Cheap Flights to Las Vegas
- Cheap Flights to Philadelphia
- Cheap Flights to Tampa
Ready to Book Your Seaborne Airlines Flight?
Compare live Seaborne Airlines fares against other airlines on your route and lock in your seat before prices move.