Flights Boston → San Juan
As of November 2026, economy flights from Boston to San Juan have a typical range USD 730–1601, median USD 983. Full range across all 44 offers: USD 472–1880. We analyzed 44 offers from 5 airlines in a single price check.
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: Boston → San Juan
Based on 44 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Boston → San Juan
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | — | — | — |
| JetBlue | Included | USD 35 | — |
| JetBlue | — | USD 90 | — |
| Delta | Included | USD 35 | — |
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 Boston to San Juan cost?
Based on 44 offers · November 2026
Boston to San Juan flights ranged from USD 472 to USD 1880 across 44 offers analyzed in November 2026. The chart below shows how prices distributed across all 44 offers.
These 44 offers (November 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 860 and USD 1252
What hidden fees do Boston to San Juan flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Boston to San Juan routes. The breakdown below is based on 44 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 57 | 6% |
| B6 | 21 | 2% |
| JetBlue | 90 | 11% |
| DL | 28 | 3% |
JetBlue: base ~USD 770 + fees USD 90 = ~USD 860 total. B6: base ~USD 1164 + fees USD 21 = ~USD 1185 total.
JetBlue's USD 90 ancillary fees narrow the gap with B6's lower-fee model — the USD 394 base difference shrinks to USD 325 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 Boston to San Juan?
5 airlines flew Boston to San Juan in this dataset. 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.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier | 1 | — | 472 | n/a |
 Frontier Airlines | 5 | 673–1381 | 840 | 57 (7%) |
 JetBlue | 9 | 701–970 | 860 | 90 (10%) |
 Delta Air Lines | 4 | 818–1118 | 961 | 28 (3%) |
 B6 | 25 | 920–1739 | 1185 | 21 (2%) |
Where do the best Boston → 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: Boston to San Juan flights
- Full-service carriers on Boston–San Juan cost 1.1x more than budget airlines (USD 961 vs USD 839 median; overall median USD 983).
- JetBlue charges 4.3x more in ancillary fees than B6 — USD 90 vs USD 21 avg per booking.
- The same route priced USD 1106 apart depending on where it was booked — the lowest median was USD 598. 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 Boston to San Juan cost?
- Based on 44 offers analyzed, Boston to San Juan flights range from USD 472 to USD 1880, with a median price of USD 983. Search for your specific dates →
- What hidden fees should I expect on Boston to San Juan flights?
- On average, ancillary fees (bags, seat selection) add USD 40 to the base fare on Boston to San Juan flights. See itemized fees for your itinerary →
- Which airline is cheapest on Boston to San Juan including all fees?
- Frontier has the lowest median fare on Boston to San Juan at USD 472 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Boston–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 598. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Boston to San Juan routes?
- Boston to San Juan has 5 airlines competing, creating a price range from USD 472 to USD 1880 across 44 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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