Route guide

Baltimore to San Juan (BWI-SJU): Nonstop Upgrade & Award Space

JetBlue Airways, Frontier Airlines, Southwest Airlines, and United Airlines fly the BWI to SJU nonstop about 9 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every BWI to SJU departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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9
Nonstop flights a week
1,569 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every BWI to SJU departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Baltimore to San Juan to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each BWI to SJU departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See BWI to SJU on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Baltimore to San Juan nonstop

Carriers operating BWI to SJU nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • JetBlue Airways
  • Frontier Airlines
  • Southwest Airlines
  • United Airlines
See BWI to SJU on the interactive map →

Frequently asked questions about BWI to SJU

How far is San Juan from Baltimore?
BWI to SJU covers about 1,569 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from BWI to SJU?
JetBlue Airways, Frontier Airlines, Southwest Airlines, and United Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on all four of them.
How many flights a week are there from BWI to SJU?
About 9 nonstop flights a week run between Baltimore and San Juan in the current schedule, operated by JetBlue Airways, Frontier Airlines, Southwest Airlines, and United Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on BWI to SJU?
Open the BWI to SJU calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Baltimore to San Juan route, and 2LNR will notify you when space opens. It's free to start.

Never miss BWI to SJU upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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