United Flight UA4640 Deals & Information (2025/2026)

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United Flight 4640 Route Deals From $234

The cheapest prices found with in the last 7 days for return flights were $249 and $234 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 29 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$249 Roundtrip, found 5 days ago
$249
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $249 found 5 days ago
Tue, Jul 29 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $259 found 5 days ago
Tue, Jul 29 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $268 found 5 days ago
Wed, Dec 24 - Sat, Dec 27
HSV
Huntsville Intl.
DEN
Denver Intl.
$284 Roundtrip, found 1 day ago
$284
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 24 from Huntsville Intl. to Denver Intl., returning Sat, Dec 27, priced at $284 found 1 day ago
Thu, Sep 25 - Sun, Sep 28
HSV
Huntsville Intl.
DEN
Denver Intl.
$294 Roundtrip, found 2 hours ago
$294
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Sep 25 from Huntsville Intl. to Denver Intl., returning Sun, Sep 28, priced at $294 found 2 hours ago
Tue, Jul 29 - Wed, Aug 6
HSV
Huntsville Intl.
DEN
Denver Intl.
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Wed, Aug 6, priced at $308 found 1 day ago
Tue, Jul 29 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$310 Roundtrip, found 5 days ago
$310
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $310 found 5 days ago
Thu, Jul 31 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$314 Roundtrip, found 4 days ago
$314
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 31 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $314 found 4 days ago
Tue, Jul 29 - Tue, Aug 5
HSV
Huntsville Intl.
DEN
Denver Intl.
$320 Roundtrip, found 5 days ago
$320
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Denver Intl., returning Tue, Aug 5, priced at $320 found 5 days ago
Thu, Sep 25 - Sun, Sep 28
HSV
Huntsville Intl.
DEN
Denver Intl.
$354 Roundtrip, found 2 hours ago
$354
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Sep 25 from Huntsville Intl. to Denver Intl., returning Sun, Sep 28, priced at $354 found 2 hours ago

Frequently asked questions

What route does flight number UA4640 take?
UA4640 is used on a number of routes. Mostly, UA4640 flies straight from Denver, CO Airport (DEN-Denver Intl.) to Louis Armstrong New Orleans Intl. Airport. If you have a ticket on this route, you'll be up above the clouds for approximately 2 hours and 39 minutes.
What kind of plane is on flight number UA4640?
If you've booked a ticket on flight UA4640 from DEN to Louis Armstrong New Orleans Intl. Airport (MSY), you'll most likely be heading off on the Embraer 175. Flight UA4640 serves a number of routes, but this is the most popular one.
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 UA4640 flight with Travelocity, please visit our Customer Service Portal.