$94+ Cheap flights from Austin (AUS) to San Juan
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
Sep 13 — Sep 201
Round-trip
1 adult, Economy
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Find cheap flights from Austin to San Juan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Austin to San Juan
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Cheapest flights from Austin to San JuanExplore the most affordable flight options available from Austin to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
Explore the most affordable flight options available from Austin to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:00 am -
1 stop9h 29m
Tue 9/296:00 am -
2 stops9h 24m
Deal found 8/13![American Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:37 pm -
2 stops29h 57m
Tue 9/88:43 pm -
1 stop14h 20m
Deal found 8/12![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:15 am -
1 stop8h 29m
Fri 11/137:42 pm -
1 stop16h 50m
Deal found 8/11![Frontier logo]()
$300
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am -
2 stops11h 33m
Mon 8/317:24 pm -
1 stop16h 58m
Deal found 8/10![American Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:50 am -
1 stop10h 15m
Thu 9/105:00 am -
2 stops10h 05m
Deal found 8/11![Southwest logo]()
$302
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:49 pm -
1 stop18h 31m
Wed 10/146:20 am -
1 stop6h 56m
Deal found 8/12![American Airlines logo]()
$303
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:10 pm -
1 stop30h 05m
Sun 9/69:16 am -
1 stop10h 05m
Deal found 8/13![Frontier logo]()
$304
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:12 pm -
1 stop7h 26m
Sat 9/191:00 am -
2 stops12h 20m
Deal found 8/12![United Airlines logo]()
$306
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:30 am -
1 stop9h 12m
Fri 9/41:00 am -
2 stops13h 58m
Deal found 8/10![United Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:58 am -
1 stop26h 20m
Sun 9/273:08 am -
2 stops39h 40m
Deal found 8/11![Frontier logo]()
$308
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:35 pm -
2 stops16h 25m
Wed 10/712:41 pm -
1 stop10h 39m
Deal found 8/13![American Airlines logo]()
$310
Best flights from Austin to San JuanDiscover carefully curated flight deals from Austin to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
Discover carefully curated flight deals from Austin to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:12 pm -
1 stop7h 26m
Sat 9/191:00 am -
1 stop9h 26m
Deal found 8/12![United Airlines logo]()
$306
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:34 pm -
1 stop7h 55m
Fri 8/285:49 pm -
1 stop7h 29m
Deal found 8/9![Delta logo]()
$328
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
2 stops9h 40m
Thu 9/175:00 am -
2 stops10h 05m
Deal found 8/11![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:20 am -
2 stops9h 35m
Thu 10/16:00 am -
2 stops8h 45m
Deal found 8/10![Southwest logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:33 am -
2 stops13h 17m
Fri 9/251:00 am -
2 stops13h 58m
Deal found 8/11![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:30 am -
2 stops9h 40m
Sat 9/55:55 am -
2 stops11h 15m
Deal found 8/13![Southwest logo]()
$361
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:15 pm -
1 stop7h 23m
Mon 10/2612:00 pm -
2 stops12h 15m
Deal found 8/10![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:40 pm -
2 stops8h 15m
Mon 11/99:35 pm -
2 stops15h 45m
Deal found 8/13![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:40 am -
2 stops9h 30m
Tue 9/18:20 am -
2 stops8h 55m
Deal found 8/10![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:40 pm -
2 stops8h 25m
Mon 8/315:00 am -
2 stops10h 05m
Deal found 8/10![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:20 am -
2 stops9h 45m
Mon 9/285:30 am -
2 stops15h 30m
Deal found 8/9![Southwest logo]()
$427
Last-minute flights from Austin to San JuanDiscover last-minute flight deals from Austin to San Juan. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to San Juan. Data last updated August 14, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:12 pm -
1 stop7h 26m
Sat 10/317:25 am -
1 stop9h 37m
Deal found 8/10![United Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am -
2 stops11h 33m
Mon 8/317:24 pm -
1 stop16h 58m
Deal found 8/10![American Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:12 pm -
1 stop7h 26m
Fri 9/41:00 am -
1 stop9h 26m
Deal found 8/10![United Airlines logo]()
$307
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:10 pm -
1 stop30h 05m
Sun 9/69:16 am -
1 stop10h 05m
Deal found 8/13![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:37 pm -
2 stops29h 57m
Tue 9/88:43 pm -
1 stop14h 20m
Deal found 8/12![Frontier logo]()
$299
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:50 am -
1 stop10h 15m
Thu 9/105:00 am -
2 stops10h 05m
Deal found 8/11![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:12 pm -
1 stop7h 26m
Sat 9/191:00 am -
2 stops12h 20m
Deal found 8/12![United Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:58 am -
1 stop26h 20m
Sun 9/273:08 am -
2 stops39h 40m
Deal found 8/11![Frontier logo]()
$308
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:00 am -
1 stop9h 29m
Tue 9/296:00 am -
2 stops9h 24m
Deal found 8/13![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:00 pm -
2 stops9h 55m
Fri 10/26:00 am -
2 stops8h 45m
Deal found 8/11![Southwest logo]()
$303
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:35 pm -
2 stops16h 25m
Wed 10/712:41 pm -
1 stop10h 39m
Deal found 8/13![American Airlines logo]()
$310
One-way flights from Austin to San JuanSearch for one-way flight options from Austin to San Juan. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
Search for one-way flight options from Austin to San Juan. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Super.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:58 am -
1 stop13h 54m
Deal found 8/13![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 am -
1 stop7h 43m
Deal found 8/12![Frontier logo]()
$95
This Faresmojo deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:10 pm -
1 stop11h 10m
Deal found 8/11![JetBlue logo]()
$96
This Super.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:25 am -
1 stop6h 56m
Deal found 8/12![JetBlue logo]()
$101
This American Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:00 am -
1 stop17h 20m
Deal found 8/11![American Airlines logo]()
$102
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:24 pm -
1 stop17h 59m
Deal found 8/12![American Airlines logo]()
$104
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:41 am -
1 stop10h 35m
Deal found 8/13![American Airlines logo]()
$107
This American Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:32 pm -
2 stops15h 52m
Deal found 8/11![American Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:33 pm -
2 stops28h 25m
Deal found 8/11![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:08 pm -
2 stops26h 10m
Deal found 8/13![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:08 pm -
2 stops13h 01m
Deal found 8/13![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:33 pm -
2 stops38h 45m
Deal found 8/11![Frontier logo]()
$130
Find flight deals from Austin to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2026.
Round-trip from | $297 (American Airlines) |
|---|---|
One-way from | $94 (Super.com) |
Popular in | December |
Cheapest in | January |
Average price | $415 |
Cheapflights Fare Finder
Customize your flight search to find flights from Austin to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Austin to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Tue 9/15
12:12 pm-8:38 pm
1 stop7h 26m
San Juan Luis Munoz Marin Intl
Sat 9/19
1:00 am-9:26 am
1 stop9h 26m
$306
Quickest round-trip
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Mon 8/24
1:34 pm-10:29 pm
1 stop7h 55m
San Juan Luis Munoz Marin Intl
Fri 8/28
5:49 pm-12:18 am
1 stop7h 29m
$328
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Sat 9/12
6:00 am-4:40 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Thu 9/17
5:00 am-2:05 pm
2 stops10h 05m
$351
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Mon 9/28
6:20 am-4:55 pm
2 stops9h 35m
San Juan Luis Munoz Marin Intl
Thu 10/1
6:00 am-1:45 pm
2 stops8h 45m
$356
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Tue 9/1
7:30 am-6:10 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Sat 9/5
5:55 am-4:10 pm
2 stops11h 15m
$361
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Sat 9/19
9:33 am-11:50 pm
2 stops13h 17m
San Juan Luis Munoz Marin Intl
Fri 9/25
1:00 am-1:58 pm
2 stops13h 58m
$376
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Wed 10/21
12:15 pm-8:38 pm
1 stop7h 23m
San Juan Luis Munoz Marin Intl
Mon 10/26
12:00 pm-11:15 pm
2 stops12h 15m
$384
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Fri 11/6
2:40 pm-12:55 am
2 stops8h 15m
San Juan Luis Munoz Marin Intl
Mon 11/9
9:35 pm-11:20 am
2 stops15h 45m
$387
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Thu 8/27
11:40 am-10:10 pm
2 stops9h 30m
San Juan Luis Munoz Marin Intl
Tue 9/1
8:20 am-4:15 pm
2 stops8h 55m
$388
AustinSan Juan
AUS Austin Bergstrom - SJU San Juan Luis Munoz Marin Intl
AUSSJU
Austin Bergstrom
Fri 8/28
1:40 pm-11:05 pm
2 stops8h 25m
San Juan Luis Munoz Marin Intl
Mon 8/31
5:00 am-2:05 pm
2 stops10h 05m
$395
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from Austin to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Austin with our price prediction graph.
AUS-PR1
AUS-SJU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Austin to San Juan
AUS-PR1
AUS-SJU
What is the cheapest month to book a flight from Austin to San Juan?
Currently, January is the cheapest month in which you can book a flight from Austin to San Juan (average of $363). Flying from Austin to San Juan in December is currently the most expensive (average of $598). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Austin to San Juan?
Airfare is below average for this route at the moment.
Austin to San Juan flights typically cost between $356 and $497 in September.The cheapest round-trip price found within the last 5 days was $297 on American Airlines (Sep 20-Sep 29).
How far ahead should I book a flight from Austin to San Juan?
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Austin to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated August 14, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Austin to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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Austin and San Juan flights
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Top 6 airlines flying from Austin to San Juan
Discover the top 6 airlines that operate flights from Austin to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$360 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$209 | Average$355 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$245 | Average$396 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$292 | Average$479 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$303 | Average$540 | FlexibilityNo cancel fee | On-time62% |