Flights Denver → San Juan
As of October 2026, economy flights from Denver to San Juan have a typical range USD 704–1397, median USD 881. Full range across all 188 offers: USD 630–1971. We analyzed 188 offers from 7 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: Denver → San Juan
Based on 188 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Denver → San Juan
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | USD 118 | USD 130 | — |
| Sun Country Airlines | — | — | — |
| jetBlue | Included | USD 35 | — |
| Southwest | Included | USD 90 | — |
| American Airlines | Included | USD 110 | — |
| United Airlines | Included | USD 80 | — |
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 Denver to San Juan cost?
Based on 188 offers · October 2026
Denver to San Juan flights ranged from USD 630 to USD 1971 across 188 offers analyzed in October 2026. The chart below shows how prices distributed across all 188 offers.
These 188 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 757 and USD 1037
What hidden fees do Denver to San Juan flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Denver to San Juan routes. The breakdown below is based on 188 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 38 | 4% |
| SY | 15 | 2% |
| B6 | 45 | 4% |
| WN | 90 | 7% |
| AA | 120 | 8% |
| UA | 90 | 5% |
American Airlines: base ~USD 1277 + fees USD 120 = ~USD 1397 total. United Airlines: base ~USD 1760 + fees USD 90 = ~USD 1850 total.
American Airlines's USD 120 ancillary fees narrow the gap with United Airlines's lower-fee model — the USD 483 base difference shrinks to USD 453 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 Denver to San Juan?
7 airlines flew Denver 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.
Even on the cheapest airline (Frontier), fares ranged USD 645–724 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 | 18 | 645–724 | 683 | n/a |
 Sun Country Airlines | 5 | 774–848 | 826 | 15 (2%) |
 Frontier Airlines | 116 | 730–1028 | 866 | 38 (4%) |
 B6 | 23 | 818–1324 | 1041 | 45 (4%) |
 Southwest Airlines | 8 | 1201–1571 | 1316 | 90 (7%) |
 American Airlines | 9 | 1397–1500 | 1397 | 120 (9%) |
 United Airlines | 9 | 1639–1954 | 1850 | 90 (5%) |
Where do the best Denver → 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 travel agency 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: Denver to San Juan flights
- Full-service carriers on Denver–San Juan cost 1.4x more than budget airlines (USD 1358 vs USD 976 median; overall median USD 881).
- AA charges 8.0x more in ancillary fees than SY — USD 120 vs USD 15 avg per booking.
- The same route priced USD 358 apart depending on where it was booked — the lowest median was USD 683. 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 Denver to San Juan cost?
- Based on 188 offers analyzed, Denver to San Juan flights range from USD 630 to USD 1971, with a median price of USD 881. Search for your specific dates →
- What hidden fees should I expect on Denver to San Juan flights?
- On average, ancillary fees (bags, seat selection) add USD 48 to the base fare on Denver to San Juan flights. See itemized fees for your itinerary →
- Which airline is cheapest on Denver to San Juan including all fees?
- Frontier has the lowest median fare on Denver to San Juan at USD 683 (median across 18 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Denver–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 683. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Denver to San Juan routes?
- Denver to San Juan has 7 airlines competing, creating a price range from USD 630 to USD 1971 across 188 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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