$154+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
Jul 24 — Jul 311
Round-trip
1 adult, Economy
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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 June 24, 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 June 24, 2026.
This Delta deal was found by Cheapflights users on 6/19. 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.
Tue 8/115:15 am
AUS
- SJU
1 stop7h 27m
Delta
Sat 8/155:49 pm
SJU
- AUS
1 stop7h 10m
Delta
Deal found 6/19![Delta logo]()
$366
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/57:44 pm
AUS
- SJU
1 stop8h 45m
United Airlines
Tue 8/111:00 am
SJU
- AUS
1 stop9h 26m
United Airlines
Deal found 6/19![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Thu 8/139:33 am
AUS
- SJU
2 stops13h 17m
United Airlines
Sun 8/161:00 am
SJU
- AUS
1 stop9h 26m
United Airlines
Deal found 6/21![United Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 6/23. 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 10/215:30 am
AUS
- SJU
1 stop11h 35m
American Airlines
Mon 10/263:50 pm
SJU
- AUS
1 stop9h 31m
American Airlines
Deal found 6/23![American Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 6/23. 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 9/285:00 am
AUS
- SJU
2 stops14h 47m
American Airlines
Wed 10/78:35 am
SJU
- AUS
1 stop15h 16m
American Airlines
Deal found 6/23![American Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 6/20. 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 9/55:30 am
AUS
- SJU
1 stop9h 12m
United Airlines
Sat 9/121:00 am
SJU
- AUS
2 stops11h 58m
United Airlines
Deal found 6/20![United Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/1210:43 am
AUS
- SJU
1 stop14h 32m
Frontier
Sun 8/166:26 am
SJU
- AUS
2 stops31h 12m
Frontier
Deal found 6/20![Frontier logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 8/81:33 pm
AUS
- SJU
2 stops25h 38m
Frontier
Tue 8/116:26 pm
SJU
- AUS
1 stop16h 06m
Frontier
Deal found 6/21![Frontier logo]()
$380
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Sun 7/197:44 pm
AUS
- SJU
1 stop8h 45m
United Airlines
Tue 7/211:00 am
SJU
- AUS
1 stop9h 01m
United Airlines
Deal found 6/19![United Airlines logo]()
$384
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 June 24, 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 June 24, 2026.
This Delta deal was found by Cheapflights users on 6/19. 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.
Wed 10/2110:52 am
AUS
- SJU
1 stop10h 07m
Delta
Mon 10/265:43 pm
SJU
- AUS
1 stop7h 49m
Delta
Deal found 6/19![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 6/20. 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 9/2112:25 pm
AUS
- SJU
2 stops9h 40m
Southwest
Wed 9/306:00 am
SJU
- AUS
2 stops11h 20m
Southwest
Deal found 6/20![Southwest logo]()
$386
This Delta deal was found by Cheapflights users on 6/21. 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.
Tue 9/810:25 am
AUS
- SJU
1 stop10h 54m
Delta
Fri 9/1112:56 pm
SJU
- AUS
1 stop11h 17m
Delta
Deal found 6/21![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 6/22. 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 10/2011:35 am
AUS
- SJU
2 stops9h 05m
Southwest
Tue 10/272:15 pm
SJU
- AUS
2 stops8h 55m
Southwest
Deal found 6/22![Southwest logo]()
$386
This Delta deal was found by Cheapflights users on 6/21. 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.
Tue 8/1110:42 am
AUS
- SJU
1 stop10h 47m
Delta
Mon 8/245:49 pm
SJU
- AUS
1 stop7h 29m
Delta
Deal found 6/21![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 6/23. 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 9/186:20 am
AUS
- SJU
2 stops9h 35m
Southwest
Mon 9/215:30 am
SJU
- AUS
2 stops15h 30m
Southwest
Deal found 6/23![Southwest logo]()
$386
This Southwest deal was found by Cheapflights users on 6/22. 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.
Sun 8/98:45 am
AUS
- SJU
1 stop13h 00m
Southwest
Tue 8/116:00 am
SJU
- AUS
2 stops11h 20m
Southwest
Deal found 6/22![Southwest logo]()
$386
This Southwest deal was found by Cheapflights users on 6/23. 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 10/106:30 am
AUS
- SJU
1 stop11h 30m
Southwest
Fri 10/169:45 pm
SJU
- AUS
1 stop12h 05m
Southwest
Deal found 6/23![Southwest logo]()
$386
This Southwest deal was found by Cheapflights users on 6/23. 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 9/412:25 pm
AUS
- SJU
2 stops9h 40m
Southwest
Tue 9/86:00 am
SJU
- AUS
2 stops11h 20m
Southwest
Deal found 6/23![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 6/19. 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 10/141:30 pm
AUS
- SJU
2 stops9h 15m
Southwest
Thu 10/2212:00 pm
SJU
- AUS
2 stops9h 15m
Southwest
Deal found 6/19![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 6/22. 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 8/158:35 am
AUS
- SJU
2 stops8h 30m
Southwest
Mon 8/175:30 am
SJU
- AUS
2 stops15h 30m
Southwest
Deal found 6/22![Southwest logo]()
$426
Last-minute flights from Austin to San JuanDiscover last-minute flight deals from Austin to San Juan. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to San Juan. Data last updated June 24, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/23. 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.
Fri 7/1010:42 am
AUS
- SJU
1 stop10h 01m
Frontier
Tue 7/148:37 pm
SJU
- AUS
1 stop13h 55m
Frontier
Deal found 6/23![Frontier logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/145:34 pm
AUS
- SJU
2 stops30h 07m
Frontier
Tue 7/215:15 pm
SJU
- AUS
1 stop20h 23m
Frontier
Deal found 6/21![Frontier logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/145:34 pm
AUS
- SJU
2 stops30h 07m
Frontier
Thu 7/308:37 pm
SJU
- AUS
1 stop13h 55m
Frontier
Deal found 6/20![Frontier logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/181:33 pm
AUS
- SJU
2 stops47h 22m
Frontier
Tue 7/215:15 pm
SJU
- AUS
1 stop20h 23m
Frontier
Deal found 6/22![Frontier logo]()
$407
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Sun 7/197:44 pm
AUS
- SJU
1 stop8h 45m
United Airlines
Tue 7/211:00 am
SJU
- AUS
1 stop9h 01m
United Airlines
Deal found 6/19![United Airlines logo]()
$384
This CheapOair deal was found by Cheapflights users on 6/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:00 am
AUS
- SJU
1 stop11h 04m
Multiple Airlines
Tue 7/288:37 pm
SJU
- AUS
1 stop13h 55m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$422
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 7/215:34 pm
AUS
- SJU
2 stops43h 21m
Frontier
Tue 8/116:26 pm
SJU
- AUS
1 stop16h 06m
Frontier
Deal found 6/23![Frontier logo]()
$395
This CheapOair deal was found by Cheapflights users on 6/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:23 pm
AUS
- SJU
1 stop13h 34m
Frontier
Tue 8/118:37 pm
SJU
- AUS
1 stop13h 55m
Frontier
Deal found 6/20![Frontier logo]()
$406
This CheapOair deal was found by Cheapflights users on 6/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/253:20 pm
AUS
- SJU
1 stop16h 59m
Multiple Airlines
Tue 8/116:26 pm
SJU
- AUS
1 stop16h 06m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$413
This Southwest deal was found by Cheapflights users on 6/21. 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 7/2712:45 pm
AUS
- SJU
1 stop10h 50m
Southwest
Tue 8/45:15 am
SJU
- AUS
1 stop10h 45m
Southwest
Deal found 6/21![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 6/21. 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 7/2712:45 pm
AUS
- SJU
1 stop10h 50m
Southwest
Fri 7/3110:20 pm
SJU
- AUS
1 stop12h 10m
Southwest
Deal found 6/21![Southwest logo]()
$401
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 June 24, 2026.
Search for one-way flight options from Austin to San Juan. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/185:34 pm
AUS
- SJU
2 stops30h 22m
Frontier
Deal found 6/20![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 9/1610:50 am
AUS
- SJU
2 stops12h 07m
Frontier
Deal found 6/21![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/195:34 pm
AUS
- SJU
2 stops43h 55m
Frontier
Deal found 6/20![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/151:33 pm
AUS
- SJU
2 stops34h 08m
Frontier
Deal found 6/20![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Mon 9/2110:50 am
AUS
- SJU
2 stops36h 07m
Frontier
Deal found 6/21![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Sun 8/165:34 pm
AUS
- SJU
2 stops30h 07m
Frontier
Deal found 6/21![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Sun 8/166:52 pm
AUS
- SJU
2 stops27h 32m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/181:33 pm
AUS
- SJU
2 stops47h 22m
Frontier
Deal found 6/21![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 9/1910:50 am
AUS
- SJU
2 stops28h 55m
Frontier
Deal found 6/21![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 8/225:23 pm
AUS
- SJU
1 stop16h 43m
Frontier
Deal found 6/21![Frontier logo]()
$172
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Sun 8/165:30 am
AUS
- SJU
1 stop9h 12m
United Airlines
Deal found 6/19![United Airlines logo]()
$173
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 June 24, 2026.
Round-trip from | $366 (Delta) |
|---|---|
One-way from | $154 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $484 |
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 June 24, 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
Quickest round-trip
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Wed 10/21
10:52 am-9:59 pm
1 stop10h 07m
San Juan Luis Munoz Marin Intl
Mon 10/26
5:43 pm-12:32 am
1 stop7h 49m
$366
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Tue 9/8
10:25 am-10:19 pm
1 stop10h 54m
San Juan Luis Munoz Marin Intl
Fri 9/11
12:56 pm-11:13 pm
1 stop11h 17m
$366
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Tue 8/11
10:42 am-10:29 pm
1 stop10h 47m
San Juan Luis Munoz Marin Intl
Mon 8/24
5:49 pm-12:18 am
1 stop7h 29m
$366
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Mon 9/21
12:25 pm-11:05 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Wed 9/30
6:00 am-4:20 pm
2 stops11h 20m
$386
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Tue 10/20
11:35 am-9:40 pm
2 stops9h 05m
San Juan Luis Munoz Marin Intl
Tue 10/27
2:15 pm-10:10 pm
2 stops8h 55m
$386
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Fri 9/18
6:20 am-4:55 pm
2 stops9h 35m
San Juan Luis Munoz Marin Intl
Mon 9/21
5:30 am-8:00 pm
2 stops15h 30m
$386
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Sun 8/9
8:45 am-10:45 pm
1 stop13h 00m
San Juan Luis Munoz Marin Intl
Tue 8/11
6:00 am-4:20 pm
2 stops11h 20m
$386
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Sat 10/10
6:30 am-7:00 pm
1 stop11h 30m
San Juan Luis Munoz Marin Intl
Fri 10/16
9:45 pm-8:50 am
1 stop12h 05m
$386
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Fri 9/4
12:25 pm-11:05 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Tue 9/8
6:00 am-4:20 pm
2 stops11h 20m
$401
AustinSan Juan
AUS - SJU
AUSSJU
Austin Bergstrom
Wed 10/14
1:30 pm-11:45 pm
2 stops9h 15m
San Juan Luis Munoz Marin Intl
Thu 10/22
12:00 pm-8:15 pm
2 stops9h 15m
$421
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, February is the cheapest month in which you can book a flight from Austin to San Juan (average of $84). Flying from Austin to San Juan in June is currently the most expensive (average of $178). 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.
What is the cheapest time of day to fly from AUS to SJU?
Find hourly flight availability from Austin to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 24, 2026.
When flying from Austin to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Austin to San Juan?
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 June 24, 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
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Austin to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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Austin and San Juan flights
Browse other Austin and San Juan flight options. Last updated on June 24, 2026.
Other flights from Austin
Browse through other flights departing from Austin. Flights are based on user searches made on Cheapflights and were last updated on June 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 June 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$200 | Average$349 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$450 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$245 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$460 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$311 | Average$548 | FlexibilityNo cancel fee | On-time62% |