Your next trip, last seen at €124
Lowest observedFrontier Airlines · 3 stops · One wayWhen to fly
Explore datesMore dates worth a look
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
- Lowest observed
- €124, departing 17 Nov 2026 (Last checked: 11 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 95Check live prices for this route
- Airlines seen
- American Airlines, Frontier Airlines, JetBlue, Southwest Airlines, United Airlines
- Typical journey time
- 19h 06m
About this route
Explore the fares we observed from San Juan to San Francisco. Prices move often, so pick your dates to see the latest options.
- Route distance
- 5,829 km
- Typical journey time
- 19h 06m
- Airlines seen
- American Airlines, Frontier Airlines, JetBlue, Southwest Airlines, United Airlines
- Seen on fares with a connection
- Frontier Airlines, JetBlue, United Airlines, Southwest Airlines
- Alternative airports
- SIG
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
Airport to city: straight-line distance
- Fernando Luis Ribas Dominicci Airport (SIG) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 1 km.
- Luis Munoz Marin International Airport (SJU) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 11 km.
- San Francisco International Airport (SFO) → San Francisco, city gazetteer reference point (37.7749, -122.4194): ≈ 18 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from San Juan to San Francisco: November 2026, from €124 (checked 11 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €192 | 16 |
| November 2026 | €124 | 22 |
| December 2026 | €137 | 25 |
| January 2027 | €190 | 22 |
| February 2027 | €171 | 10 |
Lowest fare by day of the week
Cheapest day of the week from San Juan to San Francisco: Tuesday, from €124 (checked 11 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €170 | 12 |
| Tuesday | €124 | 15 |
| Wednesday | €137 | 15 |
| Thursday | €171 | 15 |
| Friday | €126 | 15 |
| Saturday | €165 | 13 |
| Sunday | €238 | 10 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from San Juan to San Francisco by days until departure (31 to 60 days): €124 (checked 11 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €239 | 7 |
| 8 to 30 days | €126 | 21 |
| 31 to 60 days | €124 | 23 |
| 61 days or more | €166 | 44 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from San Juan to San Francisco: Frontier Airlines, from €124 (checked 11 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €124Nov 17, 2026 | 51 |
| JetBlue | €166Nov 3, 2026 | 42 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from San Juan to San Francisco?
The lowest fare we have observed is €124, found on 11 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from San Juan to San Francisco?
Cheapest month from San Juan to San Francisco: November 2026, from €124 (checked 11 Oct 2026).
Are there direct flights from San Juan to San Francisco?
Our data holds no non-stop flight from San Juan to San Francisco. The fares on this page include at least one stop.
Which airlines fly from San Juan to San Francisco?
These are the carriers we have seen on the route: American Airlines, Frontier Airlines, JetBlue, Southwest Airlines, United Airlines.
How long does the flight from San Juan to San Francisco take?
The average journey time across the 96 fares we observed is 18h 40m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed San Juan to San Francisco fares were non-stop?
None of the 96 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from San Juan to San Francisco?
Cheapest day of the week from San Juan to San Francisco: Tuesday, from €124 (checked 11 Oct 2026).
Which airline has the lowest fare from San Juan to San Francisco?
Cheapest airline from San Juan to San Francisco: Frontier Airlines, from €124 (checked 11 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
Keep exploring
Similar routes
More routes from San Juan
Show all 30 routes →Show fewer ↑
More routes to San Francisco
Show all 30 routes →Show fewer ↑
Recently observed fares. Prices may change.
Last checked: 11 Oct 2026