United Flight 1556 Deals & Information (2026/2027)

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United Flight 1556 Route Deals From $188

The cheapest prices found with in the last 7 days for return flights were $287 and $188 for one-way flights to Luis Munoz Marin Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 28 - Mon, Sep 7
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$287 Roundtrip, just found
$287
Roundtrip
just found
Select United flight, departing Fri, Aug 28 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Mon, Sep 7, priced at $287 just found
Sat, Aug 22 - Sat, Sep 5
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$297 Roundtrip, found 1 hour ago
$297
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Aug 22 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Sat, Sep 5, priced at $297 found 1 hour ago
Fri, Aug 28 - Mon, Sep 7
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$302 Roundtrip, just found
$302
Roundtrip
just found
Select United flight, departing Fri, Aug 28 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Mon, Sep 7, priced at $302 just found
Sun, Aug 16 - Fri, Aug 21
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$312 Roundtrip, found 2 hours ago
$312
Roundtrip
found 2 hours ago
Select United flight, departing Sun, Aug 16 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Fri, Aug 21, priced at $312 found 2 hours ago
Sat, Aug 22 - Sat, Sep 5
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$322 Roundtrip, found 1 hour ago
$322
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Aug 22 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Sat, Sep 5, priced at $322 found 1 hour ago
Sat, Jul 4 - Sun, Aug 2
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$328 Roundtrip, found 2 days ago
$328
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jul 4 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Sun, Aug 2, priced at $328 found 2 days ago
Wed, Jul 15 - Thu, Jul 30
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$331 Roundtrip, found 12 hours ago
$331
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jul 15 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Jul 30, priced at $331 found 12 hours ago
Tue, Aug 18 - Thu, Aug 27
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$335 Roundtrip, found 2 hours ago
$335
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 18 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Aug 27, priced at $335 found 2 hours ago
Sun, Aug 23 - Tue, Sep 8
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$336 Roundtrip, found 5 hours ago
$336
Roundtrip
found 5 hours ago
Select United flight, departing Sun, Aug 23 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Sep 8, priced at $336 found 5 hours ago
Wed, Jul 15 - Thu, Jul 30
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$340 Roundtrip, found 12 hours ago
$340
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jul 15 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Jul 30, priced at $340 found 12 hours ago
Sun, Aug 9 - Sun, Aug 16
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$343 Roundtrip, found 3 hours ago
$343
Roundtrip
found 3 hours ago
Select United flight, departing Sun, Aug 9 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Sun, Aug 16, priced at $343 found 3 hours ago
Tue, Aug 18 - Thu, Aug 27
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$345 Roundtrip, found 2 hours ago
$345
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 18 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Aug 27, priced at $345 found 2 hours ago
Tue, Aug 18 - Tue, Sep 1
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$349 Roundtrip, found 3 hours ago
$349
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Aug 18 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Sep 1, priced at $349 found 3 hours ago
Tue, Aug 18 - Thu, Aug 27
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$350 Roundtrip, found 2 hours ago
$350
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 18 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Aug 27, priced at $350 found 2 hours ago

Frequently asked questions

What route does flight number UA1556 take?
UA1556 operates from Newark, NJ Airport (EWR-Liberty Intl.) to Isla Verde Intl. Airport directly. This service usually takes 3 hours and 54 minutes.
What terminal does UA1556 fly out of?
Passengers with a booking on flight number UA1556 from EWR to San Juan Airport (SJU-Luis Munoz Marin Intl.) generally fly out of Terminal C.
What kind of plane is on flight number UA1556?
Get ready to step aboard a Boeing 737-900 if you're taking off on flight UA1556. Nearly all flights from EWR to SJU are operated using this type of aircraft.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA1556 flight with Travelocity, please visit our Customer Service Portal.