San Juan to Austin SJU → AUS
Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS)
The cheapest return found recently is $301 with Frontier Airlines, 23 Dec – 6 Jan 2027, found 3 days ago. The cheapest one-way found recently is $274 with American Airlines, 15 Aug 2027, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $356 to $447.
Cheapest return found recently
$301
23 Dec – 6 Jan 2027 · Frontier Airlines
Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS)
Leaves 2:29 a.m. · Return leaves 7:53 a.m. · 23 h 50 min of travel, both ways together
out 1 stop, back 1 stop
found 3 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$301 23 Dec – 6 Jan 2027found 3 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 4 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $301 to $400.
At $301, the cheapest return found recently is at the low end of that range.
4 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 23 Dec to 30 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 14-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Dec – 6 Jan 2027 | $301 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 29 Dec – 5 Jan 2027 | $482 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | out 1 stop, back 3 stops | found 3 days ago | See prices for these dates |
| 30 Dec – 6 Jan 2027 | $411 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
Airlines on the cheapest dates: Frontier Airlines.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $190 to $287.
Cheapest one-way found recently
$274
15 Aug 2027 · American Airlines
Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS)
Leaves 7:11 p.m. · 15 h 37 min trip
2 stops
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$274 15 Aug 2027found yesterdayOpen this trip
$112 14 Decfound 3 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $102 to $134.
At $274, the cheapest one-way found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 14 Dec to 15 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 15 Aug 2027 to compare.
Every date we hold
6 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Dec | $112 | Frontier Airlines | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | 1 stop | found 3 days ago | Open this trip |
| 1 Jan 2027 | $306 | jetBlue | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | 1 stop | found 5 days ago | Open this trip |
| 15 Aug 2027 | $268 | American Airlines | Luis Munoz Marin International Airport (SJU) → Austin-Bergstrom International Airport (AUS) | 2 stops | found 5 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $112.
Airlines on the cheapest dates: Frontier Airlines, jetBlue, American Airlines.
Premium cabin fares from San Juan to Austin
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 23 Dec – 6 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 15 Aug 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Juan to Austin?
Return
Not enough history yet: we have 4 days of return prices, 24 Sept to 18 Oct, and compare booking times once 3 booking ranges have 7 days each.
One-way
The cheapest fares were 60 to 89 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $120 | $102 | Cheapest seen | 25 |
| 90–179 days | $456 | $380 | +280% | 12 |
| 180+ days | $268 | $266 | +123% | 16 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Aguadilla → Austin
108 km from San Juan
$174
$100 less than flying from San Juan
19 Dec · BQN → AUS · 2 stops
found 4 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 23 Dec – 6 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work