Flights Austin → San Juan
As of November 2026, economy flights from Austin to San Juan have a typical range USD 406–676, median USD 526. Full range across all 227 offers: USD 230–4007. We analyzed 227 offers from 9 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: Austin → San Juan
Based on 227 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Austin → San Juan
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier Airlines | — | — | — |
| JetBlue | Included | — | — |
| Southwest | Included | USD 90 | — |
| American Airlines | Included | USD 35 | — |
| United | Included | USD 35 | — |
| 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 Austin to San Juan cost?
Based on 227 offers · November 2026
Austin to San Juan flights ranged from USD 230 to USD 4007 across 227 offers analyzed in November 2026. The chart below shows how prices distributed across all 227 offers.
These 227 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 436 and USD 623
What hidden fees do Austin to San Juan flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Austin to San Juan routes. The breakdown below is based on 227 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 31 | 9% |
| B6 | 10 | 2% |
| WN | 53 | 11% |
| AA | 54 | 9% |
| UA | 45 | 6% |
| DL | 45 | 2% |
Southwest Airlines: base ~USD 400 + fees USD 53 = ~USD 453 total. B6: base ~USD 467 + fees USD 10 = ~USD 477 total.
Southwest Airlines's USD 53 ancillary fees narrow the gap with B6's lower-fee model — the USD 67 base difference shrinks to USD 24 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 Austin to San Juan?
9 airlines flew Austin 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 | — | 282 | n/a |
 Frontier Airlines | 14 | 291–466 | 316 | 31 (10%) |
 American | 1 | — | 344 | n/a |
 Southwest | 9 | 403–443 | 425 | n/a |
 Southwest Airlines | 80 | 406–646 | 453 | 53 (12%) |
 B6 | 24 | 360–627 | 477 | 10 (2%) |
 American Airlines | 78 | 522–623 | 572 | 54 (9%) |
 United Airlines | 13 | 641–926 | 704 | 45 (6%) |
 Delta Air Lines | 7 | 966–4007 | 1469 | 45 (3%) |
Where do the best Austin → 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: Austin to San Juan flights
- Full-service carriers on Austin–San Juan cost 2.0x more than budget airlines (USD 772 vs USD 391 median; overall median USD 526).
- AA charges 5.4x more in ancillary fees than B6 — USD 54 vs USD 10 avg per booking.
- The same route priced USD 264 apart depending on where it was booked — the lowest median was USD 309. 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 Austin to San Juan cost?
- Based on 227 offers analyzed, Austin to San Juan flights range from USD 230 to USD 4007, with a median price of USD 526. Search for your specific dates →
- What hidden fees should I expect on Austin to San Juan flights?
- On average, ancillary fees (bags, seat selection) add USD 46 to the base fare on Austin to San Juan flights. See itemized fees for your itinerary →
- Which airline is cheapest on Austin to San Juan including all fees?
- Frontier has the lowest median fare on Austin to San Juan at USD 282 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Austin–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 309. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Austin to San Juan routes?
- Austin to San Juan has 9 airlines competing, creating a price range from USD 230 to USD 4007 across 227 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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