United Flight 1556 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 1556 Route Deals From $76

The cheapest prices found with in the last 7 days for return flights were $140 and $76 for one-way flights to Luis Munoz Marin Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 28 - Wed, Oct 29
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$140 Roundtrip, just found
$140
Roundtrip
just found
Select United flight, departing Tue, Oct 28 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Wed, Oct 29, priced at $140 just found
Mon, Nov 17 - Thu, Dec 11
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$143 Roundtrip, found 6 hours ago
$143
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Nov 17 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Dec 11, priced at $143 found 6 hours ago
Mon, Oct 27 - Tue, Oct 28
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$147 Roundtrip, just found
$147
Roundtrip
just found
Select United flight, departing Mon, Oct 27 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Oct 28, priced at $147 just found
Mon, Oct 27 - Tue, Oct 28
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$151 Roundtrip, just found
$151
Roundtrip
just found
Select United flight, departing Mon, Oct 27 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Oct 28, priced at $151 just found
Tue, Oct 28 - Wed, Oct 29
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$156 Roundtrip, just found
$156
Roundtrip
just found
Select United flight, departing Tue, Oct 28 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Wed, Oct 29, priced at $156 just found
Mon, Oct 27 - Tue, Oct 28
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$157 Roundtrip, just found
$157
Roundtrip
just found
Select United flight, departing Mon, Oct 27 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Oct 28, priced at $157 just found
Tue, Oct 28 - Wed, Oct 29
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$161 Roundtrip, just found
$161
Roundtrip
just found
Select United flight, departing Tue, Oct 28 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Wed, Oct 29, priced at $161 just found
Mon, Nov 17 - Thu, Dec 11
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$170 Roundtrip, found 6 hours ago
$170
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Nov 17 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Thu, Dec 11, priced at $170 found 6 hours ago
Mon, Oct 27 - Tue, Oct 28
EWR
Newark Liberty Intl. Airport
SJU
Luis Munoz Marin Intl.
$173 Roundtrip, just found
$173
Roundtrip
just found
Select United flight, departing Mon, Oct 27 from Newark Liberty Intl. Airport to Luis Munoz Marin Intl., returning Tue, Oct 28, priced at $173 just found

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.