United Flight UA404 Deals & Information (2025/2026)

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Frequently asked questions

What route does flight number UA404 take?
UA404 is used on a range of routes. Most commonly, UA404 flies straight from Denver Intl. Airport (DEN) to John Wayne Airport (SNA). If you have a ticket on this route, you'll be in the air for around 2 hours and 28 minutes.
What kind of plane is on flight number UA404?
If you're on flight UA404 from DEN to SNA, there's an excellent chance you'll be jetting off on an Airbus A320. Flight UA404 serves numerous routes, but this is the busiest.
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 UA404 flight with Travelocity, please visit our Customer Service Portal.