Flights Seattle → San Juan
As of November 2026, economy flights from Seattle to San Juan have a typical range USD 1714–3346, median USD 2332. Full range across all 259 offers: USD 1430–3989. We found 78% of 259 offers from budget carriers (around USD 2237) and 22% from full-service carriers (around USD 2662).
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: Seattle → San Juan
Based on 259 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Seattle → San Juan
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Sun Country Air | USD 80 | USD 80 | — |
| American | — | USD 110 | — |
| American Airlines | Included | USD 110 | — |
| United Airlines | Included | USD 80 | — |
| Alaska Airlines | Included | USD 110 | — |
| 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 Seattle to San Juan cost?
Based on 259 offers · November 2026
Seattle to San Juan flights ranged from USD 1430 to USD 3989 across 259 offers analyzed in November 2026. Two fare clusters detected: budget fares around 2070 and premium fares around 3350 The chart below shows how prices distributed across all 259 offers.
These 259 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 2060 and USD 2867
What hidden fees do Seattle to San Juan flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Seattle to San Juan routes. The breakdown below is based on 259 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| SY | 68 | 4% |
| American | 110 | 7% |
| AA | 63 | 3% |
| UA | 51 | 2% |
| AS | 120 | 5% |
| DL | 45 | 1% |
Alaska Airlines: base ~USD 2542 + fees USD 120 = ~USD 2662 total. Delta Air Lines: base ~USD 3301 + fees USD 45 = ~USD 3346 total.
Alaska Airlines's USD 120 ancillary fees narrow the gap with Delta Air Lines's lower-fee model — the USD 759 base difference shrinks to USD 684 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 Seattle to San Juan?
7 airlines flew Seattle 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.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 AA|WN | 1 | — | 1430 | n/a |
 American | 3 | 1494–1574 | 1574 | 110 (7%) |
 Sun Country Airlines | 6 | 1450–2060 | 1575 | 68 (4%) |
 American Airlines | 127 | 1686–2811 | 2087 | 63 (3%) |
 United Airlines | 66 | 2042–2584 | 2237 | 51 (2%) |
 Alaska Airlines | 3 | 2304–2716 | 2662 | 120 (5%) |
 Delta Air Lines | 53 | — | 3346 | 45 (1%) |
Where do the best Seattle → 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: Seattle to San Juan flights
- Seattle–San Juan had 259 offers analyzed. Median price: USD 2332.
- AS charges 2.7x more in ancillary fees than DL — USD 120 vs USD 45 avg per booking.
- The same route priced USD 1020 apart depending on where it was booked — the lowest median was USD 1430. 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 Seattle to San Juan cost?
- Based on 259 offers analyzed, Seattle to San Juan flights range from USD 1430 to USD 3989, with a median price of USD 2332. Search for your specific dates →
- What hidden fees should I expect on Seattle to San Juan flights?
- On average, ancillary fees (bags, seat selection) add USD 57 to the base fare on Seattle to San Juan flights. See itemized fees for your itinerary →
- Which airline is cheapest on Seattle to San Juan including all fees?
- AA|WN has the lowest median fare on Seattle to San Juan at USD 1430 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Seattle–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 1430. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Seattle to San Juan routes?
- Seattle to San Juan has 7 airlines competing, creating a price range from USD 1430 to USD 3989 across 259 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
7 airlines, two price clusters — find which fits your budget
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