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

Fri, Sep 26 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select United flight, departing Fri, Sep 26 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $239 found 4 days ago
Sat, Sep 20 - Fri, Sep 26
HSV
Huntsville Intl.
DEN
Denver Intl.
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Fri, Sep 26, priced at $249 found 2 days ago
Sat, Sep 20 - Fri, Sep 26
HSV
Huntsville Intl.
DEN
Denver Intl.
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Fri, Sep 26, priced at $259 found 2 days ago
Fri, Sep 19 - Sat, Sep 20
HSV
Huntsville Intl.
DEN
Denver Intl.
$265 Roundtrip, found 2 days ago
$265
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 19 from Huntsville Intl. to Denver Intl., returning Sat, Sep 20, priced at $265 found 2 days ago
Fri, Sep 19 - Sat, Sep 20
HSV
Huntsville Intl.
DEN
Denver Intl.
$274 Roundtrip, found 2 days ago
$274
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 19 from Huntsville Intl. to Denver Intl., returning Sat, Sep 20, priced at $274 found 2 days ago
Fri, Sep 19 - Sat, Sep 20
HSV
Huntsville Intl.
DEN
Denver Intl.
$284 Roundtrip, found 2 days ago
$284
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 19 from Huntsville Intl. to Denver Intl., returning Sat, Sep 20, priced at $284 found 2 days ago
Wed, Nov 5 - Sun, Nov 9
HSV
Huntsville Intl.
DEN
Denver Intl.
$295 Roundtrip, found 1 day ago
$295
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 5 from Huntsville Intl. to Denver Intl., returning Sun, Nov 9, priced at $295 found 1 day ago
Sat, Sep 20 - Fri, Sep 26
HSV
Huntsville Intl.
DEN
Denver Intl.
$295 Roundtrip, found 2 days ago
$295
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Fri, Sep 26, priced at $295 found 2 days ago
Fri, Sep 26 - Sun, Sep 28
HSV
Huntsville Intl.
DEN
Denver Intl.
$304 Roundtrip, found 1 day ago
$304
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Huntsville Intl. to Denver Intl., returning Sun, Sep 28, priced at $304 found 1 day ago
Sat, Sep 20 - Sat, Oct 4
HSV
Huntsville Intl.
DEN
Denver Intl.
$305 Roundtrip, found 8 hours ago
$305
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Sat, Oct 4, priced at $305 found 8 hours ago
Fri, Sep 26 - Sun, Sep 28
HSV
Huntsville Intl.
DEN
Denver Intl.
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Huntsville Intl. to Denver Intl., returning Sun, Sep 28, priced at $314 found 1 day ago
Fri, Sep 26 - Tue, Sep 30
HSV
Huntsville Intl.
DEN
Denver Intl.
$319 Roundtrip, found 4 days ago
$319
Roundtrip
found 4 days ago
Select United flight, departing Fri, Sep 26 from Huntsville Intl. to Denver Intl., returning Tue, Sep 30, priced at $319 found 4 days ago
Wed, Sep 24 - Sun, Sep 28
HSV
Huntsville Intl.
DEN
Denver Intl.
$320 Roundtrip, found 16 hours ago
$320
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Sep 24 from Huntsville Intl. to Denver Intl., returning Sun, Sep 28, priced at $320 found 16 hours ago
Thu, Sep 18 - Tue, Sep 23
HSV
Huntsville Intl.
DEN
Denver Intl.
$330 Roundtrip, found 3 days ago
$330
Roundtrip
found 3 days ago
Select United flight, departing Thu, Sep 18 from Huntsville Intl. to Denver Intl., returning Tue, Sep 23, priced at $330 found 3 days ago
Sat, Sep 20 - Fri, Sep 26
HSV
Huntsville Intl.
DEN
Denver Intl.
$331 Roundtrip, found 2 days ago
$331
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 20 from Huntsville Intl. to Denver Intl., returning Fri, Sep 26, priced at $331 found 2 days 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.