United Flight 4640 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 $239 and $234 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 20 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $239 found 1 day ago
Sat, Sep 20 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $274 found 1 day ago
Thu, Nov 13 - Sat, Nov 22
HSV
Huntsville Intl.
DEN
Denver Intl.
$284 Roundtrip, found 3 hours ago
$284
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Nov 13 from Huntsville Intl. to Denver Intl., returning Sat, Nov 22, priced at $284 found 3 hours ago
Thu, Nov 13 - Sat, Nov 22
HSV
Huntsville Intl.
DEN
Denver Intl.
$289 Roundtrip, found 3 hours ago
$289
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Nov 13 from Huntsville Intl. to Denver Intl., returning Sat, Nov 22, priced at $289 found 3 hours ago
Thu, Nov 13 - Sat, Nov 22
HSV
Huntsville Intl.
DEN
Denver Intl.
$294 Roundtrip, found 3 hours ago
$294
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Nov 13 from Huntsville Intl. to Denver Intl., returning Sat, Nov 22, priced at $294 found 3 hours ago
Thu, Nov 13 - Sat, Nov 22
HSV
Huntsville Intl.
DEN
Denver Intl.
$299 Roundtrip, found 3 hours ago
$299
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Nov 13 from Huntsville Intl. to Denver Intl., returning Sat, Nov 22, priced at $299 found 3 hours ago
Fri, Sep 12 - Tue, Sep 16
HSV
Huntsville Intl.
DEN
Denver Intl.
$313 Roundtrip, found 6 days ago
$313
Roundtrip
found 6 days ago
Select United flight, departing Fri, Sep 12 from Huntsville Intl. to Denver Intl., returning Tue, Sep 16, priced at $313 found 6 days ago
Sat, Sep 20 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$319 Roundtrip, found 1 day ago
$319
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $319 found 1 day ago
Sat, Sep 20 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$327 Roundtrip, found 1 day ago
$327
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $327 found 1 day ago
Thu, Nov 13 - Sat, Nov 22
HSV
Huntsville Intl.
DEN
Denver Intl.
$329 Roundtrip, found 3 hours ago
$329
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Nov 13 from Huntsville Intl. to Denver Intl., returning Sat, Nov 22, priced at $329 found 3 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.