United Flight UA5678 Deals & Information (2025/2026)

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United Flight 5678 Route Deals From $223

The cheapest prices found with in the last 7 days for return flights were $203 and $223 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA5678 take?
You'll arrive into Ontario Airport from San Francisco Airport if you're traveling on flight number UA5678. You'll be airborne for 1 hour and 18 minutes on this trip. It's also worthwhile noting that the service conveniently travels direct.
What terminal does UA5678 fly out of?
Flights to and from San Francisco, CA Airport (SFO-San Francisco Intl.) and ONT are served by flight number UA5678, and passengers who opt for this flight usually take off from Terminal 3.
What kind of plane is on flight number UA5678?
The Bombardier CRJ is the aircraft that's generally used for flight UA5678. More often than not, this flight takes off from San Francisco Airport and comes in to land at Ontario Airport.
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 UA5678 flight with Travelocity, please visit our Customer Service Portal.