United Flight UA577 Deals & Information (2025/2026)

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United Flight 577 Route Deals From $89

The cheapest prices found with in the last 7 days for return flights were $160 and $89 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 18 - Sun, Sep 21
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$160 Roundtrip, found 2 days ago
$160
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 18 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Sun, Sep 21, priced at $160 found 2 days ago
Wed, Sep 24 - Sat, Sep 27
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$167 Roundtrip, found 2 days ago
$167
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 24 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Sat, Sep 27, priced at $167 found 2 days ago
Thu, Aug 28 - Sun, Aug 31
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$170 Roundtrip, just found
$170
Roundtrip
just found
Select United flight, departing Thu, Aug 28 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 31, priced at $170 just found
Sat, Sep 13 - Tue, Sep 23
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$177 Roundtrip, found 6 hours ago
$177
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Sep 13 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Tue, Sep 23, priced at $177 found 6 hours ago
Mon, Aug 18 - Wed, Aug 20
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 18 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 20, priced at $187 found 1 day ago
Thu, Oct 9 - Mon, Oct 13
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$188 Roundtrip, found 10 hours ago
$188
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 9 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Mon, Oct 13, priced at $188 found 10 hours ago
Sat, Nov 8 - Sun, Nov 9
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$190 Roundtrip, found 5 days ago
$190
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 8 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Sun, Nov 9, priced at $190 found 5 days ago
Sat, Sep 13 - Tue, Sep 23
MSY
Louis Armstrong New Orleans Intl.
EWR
Newark Liberty Intl. Airport
$197 Roundtrip, found 6 hours ago
$197
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Sep 13 from Louis Armstrong New Orleans Intl. to Newark Liberty Intl. Airport, returning Tue, Sep 23, priced at $197 found 6 hours ago

Frequently asked questions

What route does flight number UA577 take?
UA577 travels from DEN to GEG directly. This service generally takes 2 hours and 24 minutes.
How often is UA577 on time?
Roughly 90% of UA577 flights arrive according to scheduled times --- so if you're jetting from Denver, CO Airport (DEN-Denver Intl.) to GEG, you can be confident that you'll touch down at your destination ASAP. In the rare event that your United Airlines trip is delayed, you can expect to wait about 8 minutes. Because of the air carrier's top-notch service, this route has a star rating of 4.6.
What kind of plane is on flight number UA577?
The Boeing 737-800 is the kind of plane that's mostly used for flight number UA577. This flight almost always sets off from DEN and comes in to land at GEG.
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 UA577 flight with Travelocity, please visit our Customer Service Portal.