Cheap flights from Baltimore to San Juan

One-way fares from $105 · BWI → SJU · prices found by travellers in the last 48 hours

Compare all dates San Juan → Baltimore
Cheapest fare
$105

Frontier Airlines · Wed, Nov 18

Cheapest month
November

from $105

Direct flights
Yes

Frontier Airlines

Flight time
3h 51m

2,530 km

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Cheapest month to fly from Baltimore to San Juan

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $105
  2. December 2026 $146
  3. January 2027 $125

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart13:56 Wed, Nov 18BWI → SJU 5h 20m · 1 stop
$105one way, per person
View deal
Frontier Airlines
Depart13:56 Tue, Nov 3BWI → SJU 5h 24m · 1 stop
$121one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to San Juan

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in San JuanCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in San JuanTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in San JuanPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in San JuanCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Baltimore to San Juan

Baltimore (BWI) and San Juan (SJU) are about 2,530 km apart. Direct flights take around 3h 51m, and recent direct fares were with Frontier Airlines. Over the next few months, one-way fares start from $105, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Baltimore to San Juan?

The cheapest one-way fare we've seen recently is $105 with Frontier Airlines, departing Wednesday, November 18, 2026. Over the coming months, the lowest fare in each month ranges from $105 to $146.

What is the cheapest month to fly from Baltimore to San Juan?

November 2026 currently has the lowest fares, from $105 one way.

Are there direct flights from Baltimore to San Juan?

Yes. Recent direct fares were with Frontier Airlines.

How long is the flight from Baltimore to San Juan?

A direct flight takes about 3h 51m. Baltimore and San Juan are around 2,530 km apart.

Which airlines fly from Baltimore to San Juan?

Recent fares on this route were with Frontier Airlines and Southwest Airlines.

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