Flights Baltimore → San Juan
As of October 2026, economy flights from Baltimore to San Juan have a typical range USD 384–921, median USD 628. Full range across all 192 offers: USD 342–1177. We found 55% of 192 offers from budget carriers (around USD 623) and 45% from full-service carriers (around USD 782).
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Baltimore → San Juan
Based on 192 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Baltimore → San Juan
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | — | — | — |
| Southwest Airlines | — | USD 90 | — |
| JetBlue | Included | — | — |
| JetBlue | — | USD 98 | — |
| Southwest | — | USD 90 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Baltimore to San Juan cost?
Based on 192 offers · October 2026
Baltimore to San Juan flights ranged from USD 342 to USD 1177 across 192 offers analyzed in October 2026. Two fare clusters detected: budget fares around 384 and premium fares around 634 The chart below shows how prices distributed across all 192 offers.
These 192 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 428 and USD 848
What hidden fees do Baltimore to San Juan flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Baltimore to San Juan routes. The breakdown below is based on 192 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 14 | 3% |
| WN | 14 | 2% |
| B6 | 30 | 4% |
| JetBlue | 98 | 16% |
| Southwest | 90 | 10% |
JetBlue: base ~USD 525 + fees USD 98 = ~USD 623 total. Southwest Airlines: base ~USD 858 + fees USD 14 = ~USD 872 total.
JetBlue's USD 98 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 333 base difference shrinks to USD 249 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Baltimore to San Juan?
6 airlines flew Baltimore to San Juan in this dataset. The route shows a clear split between low-cost and full-service carriers. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
Even on the cheapest airline (Frontier), fares ranged USD 345–392 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier | 14 | 345–392 | 377 | n/a |
 Frontier Airlines | 91 | 395–667 | 443 | 14 (3%) |
 JetBlue | 1 | — | 623 | 98 (16%) |
 B6 | 5 | 608–868 | 782 | 30 (4%) |
 Southwest Airlines | 77 | 656–941 | 872 | 14 (2%) |
 Southwest | 4 | 855–1010 | 932 | 90 (10%) |
Where do the best Baltimore → San Juan prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Baltimore to San Juan flights
- Baltimore–San Juan had 192 offers analyzed. Median price: USD 628.
- JetBlue charges 7.0x more in ancillary fees than F9 — USD 98 vs USD 14 avg per booking.
- The same route priced USD 574 apart depending on where it was booked — the lowest median was USD 348. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Baltimore to San Juan cost?
- Based on 192 offers analyzed, Baltimore to San Juan flights range from USD 342 to USD 1177, with a median price of USD 628. Search for your specific dates →
- What hidden fees should I expect on Baltimore to San Juan flights?
- On average, ancillary fees (bags, seat selection) add USD 17 to the base fare on Baltimore to San Juan flights. See itemized fees for your itinerary →
- Which airline is cheapest on Baltimore to San Juan including all fees?
- Frontier has the lowest median fare on Baltimore to San Juan at USD 377 (median across 14 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Baltimore–San Juan flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 348. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Baltimore to San Juan routes?
- Baltimore to San Juan has 6 airlines competing, creating a price range from USD 342 to USD 1177 across 192 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
6 airlines, two price clusters — find which fits your budget
Find flights for my datesNew route — be among the first to track this itinerary
Building with flight data? Power your app or agent with LetsFG
The same multi-source search behind this page — every airline and the major booking sites, deduplicated and ranked — is available to your app or AI agent. Natural-language or structured queries, live prices, zero price bias.
Try the free sandbox — no card →Free sandbox, instant fake results · email for a key · Bearer-token auth · MCP, Python & JS SDKs · letsfg.co/developers