United Flight 4639 Deals & Information (2025/2026)

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United Flight 4639 Route Deals From $40

The cheapest prices found with in the last 7 days for return flights were $539 and $40 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$539 Roundtrip, found 2 hours ago
$539
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $539 found 2 hours ago
Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$624 Roundtrip, found 2 hours ago
$624
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $624 found 2 hours ago
Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$651 Roundtrip, found 2 hours ago
$651
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $651 found 2 hours ago
Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$804 Roundtrip, found 2 hours ago
$804
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $804 found 2 hours ago
Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$890 Roundtrip, found 2 hours ago
$890
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $890 found 2 hours ago
Mon, Jul 28 - Thu, Jul 31
CRP
Corpus Christi Intl.
IAH
George Bush Intercontinental
$941 Roundtrip, found 2 hours ago
$941
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 28 from Corpus Christi Intl. to George Bush Intercontinental, returning Thu, Jul 31, priced at $941 found 2 hours ago

Frequently asked questions

What route does flight number UA4639 take?
UA4639 is used on a range of routes. Typically, UA4639 flies directly from Rick Husband Amarillo Intl. Airport (AMA) to Houston Airport. If you've booked a seat on this route, you'll be airborne for 1 hour and 46 minutes.
What kind of plane is on flight number UA4639?
There's a strong chance you'll be on a Bombardier CRJ if you're going from Rick Husband Amarillo Intl. Airport (AMA) to IAH, a popular route for flight number UA4639.
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 UA4639 flight with Travelocity, please visit our Customer Service Portal.