Flights from Houston to New Castle

Cheapest flights from Houston

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$108 Roundtrip, found 5 hours ago

$108

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $108 found 5 hours ago

Sat, Aug 9 - Tue, Aug 12

IAH

George Bush Intercontinental

DEN

Denver Intl.

$118 Roundtrip, found 9 hours ago

$118

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Sat, Aug 9 from George Bush Intercontinental to Denver Intl., returning Tue, Aug 12, priced at $118 found 9 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$129 Roundtrip, found 5 hours ago

$129

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $129 found 5 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$133 Roundtrip, found 5 hours ago

$133

Roundtrip

found 5 hours ago

Select United flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $133 found 5 hours ago

Mon, Aug 4 - Fri, Aug 8

IAH

George Bush Intercontinental

DEN

Denver Intl.

$138 Roundtrip, found 9 hours ago

$138

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Mon, Aug 4 from George Bush Intercontinental to Denver Intl., returning Fri, Aug 8, priced at $138 found 9 hours ago

Thu, Aug 7 - Mon, Aug 11

IAH

George Bush Intercontinental

DEN

Denver Intl.

$139 Roundtrip, found 9 hours ago

$139

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Thu, Aug 7 from George Bush Intercontinental to Denver Intl., returning Mon, Aug 11, priced at $139 found 9 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$143 Roundtrip, found 5 hours ago

$143

Roundtrip

found 5 hours ago

Select American Airlines flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $143 found 5 hours ago

Thu, Aug 7 - Mon, Aug 11

IAH

George Bush Intercontinental

DEN

Denver Intl.

$148 Roundtrip, found 9 hours ago

$148

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Thu, Aug 7 from George Bush Intercontinental to Denver Intl., returning Mon, Aug 11, priced at $148 found 9 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$150 Roundtrip, found 5 hours ago

$150

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $150 found 5 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$150 Roundtrip, found 5 hours ago

$150

Roundtrip

found 5 hours ago

Select United flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $150 found 5 hours ago

Thu, Aug 7 - Sun, Aug 10

IAH

George Bush Intercontinental

DEN

Denver Intl.

$151 Roundtrip, found 1 day ago

$151

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 7 from George Bush Intercontinental to Denver Intl., returning Sun, Aug 10, priced at $151 found 1 day ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$153 Roundtrip, found 5 hours ago

$153

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $153 found 5 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$157 Roundtrip, found 5 hours ago

$157

Roundtrip

found 5 hours ago

Select United flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $157 found 5 hours ago

Tue, Aug 26 - Tue, Sep 9

IAH

George Bush Intercontinental

DEN

Denver Intl.

$163 Roundtrip, found 5 hours ago

$163

Roundtrip

found 5 hours ago

Select Delta flight, departing Tue, Aug 26 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 9, priced at $163 found 5 hours ago

Sat, Sep 27 - Sat, Oct 4

IAH

George Bush Intercontinental

DEN

Denver Intl.

$163 Roundtrip, found 4 days ago

$163

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, Sep 27 from George Bush Intercontinental to Denver Intl., returning Sat, Oct 4, priced at $163 found 4 days ago

Thu, Aug 7 - Mon, Aug 11

IAH

George Bush Intercontinental

DEN

Denver Intl.

$164 Roundtrip, found 9 hours ago

$164

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Thu, Aug 7 from George Bush Intercontinental to Denver Intl., returning Mon, Aug 11, priced at $164 found 9 hours ago

Mon, Aug 4 - Sun, Aug 10

IAH

George Bush Intercontinental

DEN

Denver Intl.

$165 Roundtrip, found 1 day ago

$165

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Aug 4 from George Bush Intercontinental to Denver Intl., returning Sun, Aug 10, priced at $165 found 1 day ago

Thu, Sep 18 - Thu, Sep 25

IAH

George Bush Intercontinental

DEN

Denver Intl.

$167 Roundtrip, found 3 days ago

$167

Roundtrip

found 3 days ago

Select United flight, departing Thu, Sep 18 from George Bush Intercontinental to Denver Intl., returning Thu, Sep 25, priced at $167 found 3 days ago

Wed, Jul 23 - Sat, Jul 26

IAH

George Bush Intercontinental

DEN

Denver Intl.

$168 Roundtrip, found 5 days ago

$168

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Jul 23 from George Bush Intercontinental to Denver Intl., returning Sat, Jul 26, priced at $168 found 5 days ago

Tue, Sep 23 - Tue, Sep 30

IAH

George Bush Intercontinental

DEN

Denver Intl.

$169 Roundtrip, found 5 days ago

$169

Roundtrip

found 5 days ago

Select United flight, departing Tue, Sep 23 from George Bush Intercontinental to Denver Intl., returning Tue, Sep 30, priced at $169 found 5 days ago