United Flight UA1866 Deals & Information (2025/2026)

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United Flight 1866 Route Deals From $122

The cheapest prices found with in the last 7 days for return flights were $267 and $122 for one-way flights to Los Angeles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 8 - Tue, Aug 12
EWR
Newark Liberty Intl. Airport
LAX
Los Angeles Intl.
$267 Roundtrip, just found
$267
Roundtrip
just found
Select United flight, departing Fri, Aug 8 from Newark Liberty Intl. Airport to Los Angeles Intl., returning Tue, Aug 12, priced at $267 just found

Frequently asked questions

What route does flight number UA1866 take?
Flight number UA1866 flies straight from Denver, CO Airport (DEN-Denver Intl.) to PHX. During this trip, you'll be in the air for 1 hour and 54 minutes. Book ahead to lock in your favorite seat.
How often is UA1866 on time?
About 81% of UA1866 flights head off on time --- so if you're traveling between Denver, CO Airport (DEN-Denver Intl.) and Sky Harbor Intl. Airport (PHX), you can breathe easy knowing that you'll reach your destination as quickly as possible. If this United Airlines flight runs behind time, the average wait is approximately 19 minutes. Thanks to the carrier's first-rate service, this route has a star rating of 2.75.
What kind of plane is on flight number UA1866?
Expect to hop on board a Boeing 737 MAX 9 if you're traveling on flight UA1866. Nearly all services from DIA airport to Phoenix Sky Harbor Intl. Airport are operated using this aircraft type.
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 UA1866 flight with Travelocity, please visit our Customer Service Portal.