United Flight UA1645 Deals & Information (2025/2026)

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United Flight 1645 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $229 and $214 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 6 - Tue, Sep 9
CLE
Hopkins Intl.
IAH
George Bush Intercontinental
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Sep 6 from Hopkins Intl. to George Bush Intercontinental, returning Tue, Sep 9, priced at $229 found 1 hour ago
Sat, Sep 6 - Tue, Sep 9
CLE
Hopkins Intl.
IAH
George Bush Intercontinental
$239 Roundtrip, found 1 hour ago
$239
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Sep 6 from Hopkins Intl. to George Bush Intercontinental, returning Tue, Sep 9, priced at $239 found 1 hour ago
Sat, Aug 16 - Tue, Aug 19
CLE
Hopkins Intl.
IAH
George Bush Intercontinental
$243 Roundtrip, found 4 hours ago
$243
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Aug 16 from Hopkins Intl. to George Bush Intercontinental, returning Tue, Aug 19, priced at $243 found 4 hours ago
Tue, Nov 25 - Fri, Nov 28
CLE
Hopkins Intl.
IAH
George Bush Intercontinental
$258 Roundtrip, found 20 hours ago
$258
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 25 from Hopkins Intl. to George Bush Intercontinental, returning Fri, Nov 28, priced at $258 found 20 hours ago

Frequently asked questions

What route does flight number UA1645 take?
Flight number UA1645 takes around 2 hours and 21 minutes to fly directly from Denver Intl. Airport (DEN) to IAH. We all know there's magic in the destination, but half the fun is in the journey!
How often is UA1645 on time?
United Airlines flight number UA1645 takes off as scheduled on 75% of its journeys. Think about leaving a bit of space in your travel plans if you are boarding this plane. In the event of a delay, the average wait time is about 34 minutes. This route has a rating of 0.9 stars.
What kind of plane is on flight number UA1645?
The route for flight number UA1645 is usually Denver Intl. Airport (DEN) to IAH, and the Boeing 757-300 is the type of plane you'll probably be traveling on.
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 UA1645 flight with Travelocity, please visit our Customer Service Portal.