United Flight UA404 Deals & Information (2025/2026)

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United Flight 404 Route Deals From $126

The cheapest prices found with in the last 7 days for return flights were $161 and $126 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 21 - Sun, Aug 24
LGA
LaGuardia
IAH
George Bush Intercontinental
$161 Roundtrip, just found
$161
Roundtrip
just found
Select United flight, departing Thu, Aug 21 from LaGuardia to George Bush Intercontinental, returning Sun, Aug 24, priced at $161 just found
Fri, Oct 3 - Sun, Oct 5
LGA
LaGuardia
IAH
George Bush Intercontinental
$197 Roundtrip, found 4 hours ago
$197
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Oct 3 from LaGuardia to George Bush Intercontinental, returning Sun, Oct 5, priced at $197 found 4 hours ago

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.