United Flight 404 Deals & Information (2026/2027)

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United Flight 404 Route Deals From $139

The cheapest prices found with in the last 7 days for return flights were $273 and $139 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$273 Roundtrip, found 19 hours ago
$273
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $273 found 19 hours ago
Fri, May 8 - Sat, May 9
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$276 Roundtrip, found 1 day ago
$276
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from San Antonio Intl. to George Bush Intercontinental, returning Sat, May 9, priced at $276 found 1 day ago
Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$287 Roundtrip, found 19 hours ago
$287
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $287 found 19 hours ago
Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$288 Roundtrip, found 19 hours ago
$288
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $288 found 19 hours ago
Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$290 Roundtrip, found 19 hours ago
$290
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $290 found 19 hours ago
Thu, May 28 - Sun, May 31
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$293 Roundtrip, found 13 hours ago
$293
Roundtrip
found 13 hours ago
Select United flight, departing Thu, May 28 from San Antonio Intl. to George Bush Intercontinental, returning Sun, May 31, priced at $293 found 13 hours ago
Fri, May 8 - Sat, May 9
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from San Antonio Intl. to George Bush Intercontinental, returning Sat, May 9, priced at $293 found 1 day ago
Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$304 Roundtrip, found 19 hours ago
$304
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $304 found 19 hours ago
Thu, Jun 11 - Tue, Jun 16
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$306 Roundtrip, found 19 hours ago
$306
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Jun 11 from San Antonio Intl. to George Bush Intercontinental, returning Tue, Jun 16, priced at $306 found 19 hours ago
Fri, Oct 2 - Sun, Oct 4
SAT
San Antonio Intl.
IAH
George Bush Intercontinental
$309 Roundtrip, found 16 hours ago
$309
Roundtrip
found 16 hours ago
Select United flight, departing Fri, Oct 2 from San Antonio Intl. to George Bush Intercontinental, returning Sun, Oct 4, priced at $309 found 16 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.