Flights from Washington to New Castle

Cheapest flights from Washington

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.

Fri, Aug 1 - Mon, Aug 4

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$151 Roundtrip, found 5 days ago

$151

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Mon, Aug 4, priced at $151 found 5 days ago

Thu, Aug 21 - Fri, Sep 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$168 Roundtrip, found 1 day ago

$168

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Fri, Sep 5, priced at $168 found 1 day ago

Mon, Sep 8 - Wed, Sep 10

IAD

Washington Dulles Intl.

DEN

Denver Intl.

$177 Roundtrip, found 2 days ago

$177

Roundtrip

found 2 days ago

Select United flight, departing Mon, Sep 8 from Washington Dulles Intl. to Denver Intl., returning Wed, Sep 10, priced at $177 found 2 days ago

Mon, Sep 8 - Wed, Sep 10

IAD

Washington Dulles Intl.

DEN

Denver Intl.

$187 Roundtrip, found 2 days ago

$187

Roundtrip

found 2 days ago

Select American Airlines flight, departing Mon, Sep 8 from Washington Dulles Intl. to Denver Intl., returning Wed, Sep 10, priced at $187 found 2 days ago

Sat, Jul 26 - Mon, Aug 4

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$188 Roundtrip, found 19 hours ago

$188

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sat, Jul 26 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Mon, Aug 4, priced at $188 found 19 hours ago

Wed, Jul 30 - Tue, Aug 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$193 Roundtrip, found 19 hours ago

$193

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Wed, Jul 30 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Tue, Aug 5, priced at $193 found 19 hours ago

Mon, Sep 8 - Wed, Sep 10

IAD

Washington Dulles Intl.

DEN

Denver Intl.

$197 Roundtrip, found 2 days ago

$197

Roundtrip

found 2 days ago

Select American Airlines flight, departing Mon, Sep 8 from Washington Dulles Intl. to Denver Intl., returning Wed, Sep 10, priced at $197 found 2 days ago

Fri, Aug 1 - Mon, Aug 4

DCA

Ronald Reagan Washington National

DEN

Denver Intl.

$198 Roundtrip, found 15 hours ago

$198

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Ronald Reagan Washington National to Denver Intl., returning Mon, Aug 4, priced at $198 found 15 hours ago

Sat, Jul 26 - Thu, Aug 7

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$201 Roundtrip, found 19 hours ago

$201

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sat, Jul 26 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Thu, Aug 7, priced at $201 found 19 hours ago

Thu, Aug 21 - Fri, Sep 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$202 Roundtrip, found 1 day ago

$202

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Fri, Sep 5, priced at $202 found 1 day ago

Thu, Aug 21 - Fri, Sep 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$203 Roundtrip, found 1 day ago

$203

Roundtrip

found 1 day ago

Select American Airlines flight, departing Thu, Aug 21 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Fri, Sep 5, priced at $203 found 1 day ago

Mon, Jul 28 - Sat, Aug 9

DCA

Ronald Reagan Washington National

DEN

Denver Intl.

$204 Roundtrip, found 19 hours ago

$204

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Ronald Reagan Washington National to Denver Intl., returning Sat, Aug 9, priced at $204 found 19 hours ago

Wed, Jul 30 - Thu, Aug 7

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$206 Roundtrip, found 19 hours ago

$206

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Wed, Jul 30 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Thu, Aug 7, priced at $206 found 19 hours ago

Thu, Aug 21 - Fri, Sep 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$206 Roundtrip, found 1 day ago

$206

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Fri, Sep 5, priced at $206 found 1 day ago

Fri, Aug 1 - Tue, Aug 5

BWI

Baltimore Washington Intl. Thurgood Marshall

DEN

Denver Intl.

$208 Roundtrip, found 19 hours ago

$208

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Fri, Aug 1 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Tue, Aug 5, priced at $208 found 19 hours ago

Mon, Jul 28 - Sun, Aug 3

DCA

Ronald Reagan Washington National

DEN

Denver Intl.

$208 Roundtrip, found 19 hours ago

$208

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Ronald Reagan Washington National to Denver Intl., returning Sun, Aug 3, priced at $208 found 19 hours ago

Wed, Sep 10 - Wed, Sep 10

IAD

Washington Dulles Intl.

DEN

Denver Intl.

$231 Roundtrip, found 2 days ago

$231

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Sep 10 from Washington Dulles Intl. to Denver Intl., returning Wed, Sep 10, priced at $231 found 2 days ago

Thu, Jul 10 - Thu, Jul 17

IAD

Washington Dulles Intl.

ASE

Pitkin County

$314 Roundtrip, found 4 days ago

$314

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 10 from Washington Dulles Intl. to Pitkin County, returning Thu, Jul 17, priced at $314 found 4 days ago

Fri, Aug 1 - Mon, Aug 4

DCA

Ronald Reagan Washington National

DEN

Denver Intl.

$409 Roundtrip, found 15 hours ago

$409

Roundtrip

found 15 hours ago

Select JetBlue Airways flight, departing Fri, Aug 1 from Ronald Reagan Washington National to Denver Intl., returning Mon, Aug 4, priced at $409 found 15 hours ago

Mon, Jun 30 - Tue, Jul 29

IAD

Washington Dulles Intl.

GJT

Grand Junction Regional

$499 Roundtrip, found 6 days ago

$499

Roundtrip

found 6 days ago

Select United flight, departing Mon, Jun 30 from Washington Dulles Intl. to Grand Junction Regional, returning Tue, Jul 29, priced at $499 found 6 days ago