Flights from Houston to Irwin

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.

Wed, Sep 3 - Tue, Sep 9

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$116 Roundtrip, found 6 days ago

$116

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Wed, Sep 3 from George Bush Intercontinental to Pittsburgh Intl., returning Tue, Sep 9, priced at $116 found 6 days ago

Sun, Sep 7 - Thu, Sep 11

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$124 Roundtrip, found 6 days ago

$124

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sun, Sep 7 from George Bush Intercontinental to Pittsburgh Intl., returning Thu, Sep 11, priced at $124 found 6 days ago

Sun, Aug 24 - Tue, Aug 26

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$130 Roundtrip, found 1 day ago

$130

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 24 from George Bush Intercontinental to Pittsburgh Intl., returning Tue, Aug 26, priced at $130 found 1 day ago

Sun, Aug 24 - Thu, Aug 28

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$144 Roundtrip, found 1 day ago

$144

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 24 from George Bush Intercontinental to Pittsburgh Intl., returning Thu, Aug 28, priced at $144 found 1 day ago

Tue, Sep 2 - Tue, Sep 9

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$146 Roundtrip, found 6 days ago

$146

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Tue, Sep 2 from George Bush Intercontinental to Pittsburgh Intl., returning Tue, Sep 9, priced at $146 found 6 days ago

Sun, Sep 7 - Thu, Sep 11

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$148 Roundtrip, found 6 days ago

$148

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sun, Sep 7 from George Bush Intercontinental to Pittsburgh Intl., returning Thu, Sep 11, priced at $148 found 6 days ago

Sat, Aug 30 - Wed, Sep 3

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$155 Roundtrip, found 6 days ago

$155

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sat, Aug 30 from George Bush Intercontinental to Pittsburgh Intl., returning Wed, Sep 3, priced at $155 found 6 days ago

Sun, Aug 24 - Mon, Aug 25

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$160 Roundtrip, found 1 day ago

$160

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Aug 24 from George Bush Intercontinental to Pittsburgh Intl., returning Mon, Aug 25, priced at $160 found 1 day ago

Sat, Aug 30 - Sat, Sep 6

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$169 Roundtrip, found 6 days ago

$169

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sat, Aug 30 from George Bush Intercontinental to Pittsburgh Intl., returning Sat, Sep 6, priced at $169 found 6 days ago

Sat, Aug 23 - Tue, Aug 26

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$170 Roundtrip, found 1 day ago

$170

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Aug 23 from George Bush Intercontinental to Pittsburgh Intl., returning Tue, Aug 26, priced at $170 found 1 day ago

Sun, Sep 7 - Thu, Sep 11

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$172 Roundtrip, found 6 days ago

$172

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sun, Sep 7 from George Bush Intercontinental to Pittsburgh Intl., returning Thu, Sep 11, priced at $172 found 6 days ago

Mon, Sep 1 - Wed, Sep 3

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$176 Roundtrip, found 6 days ago

$176

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Sep 1 from George Bush Intercontinental to Pittsburgh Intl., returning Wed, Sep 3, priced at $176 found 6 days ago

Thu, Aug 21 - Mon, Aug 25

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$183 Roundtrip, found 1 day ago

$183

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Aug 21 from George Bush Intercontinental to Pittsburgh Intl., returning Mon, Aug 25, priced at $183 found 1 day ago

Sat, Aug 23 - Thu, Aug 28

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$184 Roundtrip, found 1 day ago

$184

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Aug 23 from George Bush Intercontinental to Pittsburgh Intl., returning Thu, Aug 28, priced at $184 found 1 day ago

Mon, Sep 1 - Sat, Sep 6

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$190 Roundtrip, found 6 days ago

$190

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Sep 1 from George Bush Intercontinental to Pittsburgh Intl., returning Sat, Sep 6, priced at $190 found 6 days ago

Wed, Aug 20 - Fri, Aug 22

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$238 Roundtrip, found 1 day ago

$238

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Aug 20 from George Bush Intercontinental to Pittsburgh Intl., returning Fri, Aug 22, priced at $238 found 1 day ago

Tue, Sep 2 - Sat, Sep 6

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$277 Roundtrip, found 6 days ago

$277

Roundtrip

found 6 days ago

Select United flight, departing Tue, Sep 2 from George Bush Intercontinental to Pittsburgh Intl., returning Sat, Sep 6, priced at $277 found 6 days ago

Tue, Sep 2 - Wed, Sep 3

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$297 Roundtrip, found 6 days ago

$297

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Sep 2 from George Bush Intercontinental to Pittsburgh Intl., returning Wed, Sep 3, priced at $297 found 6 days ago

Tue, Sep 2 - Sat, Sep 6

IAH

George Bush Intercontinental

PIT

Pittsburgh Intl.

$297 Roundtrip, found 6 days ago

$297

Roundtrip

found 6 days ago

Select American Airlines flight, departing Tue, Sep 2 from George Bush Intercontinental to Pittsburgh Intl., returning Sat, Sep 6, priced at $297 found 6 days ago

Thu, Aug 21 - Mon, Aug 25

HOU

William P. Hobby

PIT

Pittsburgh Intl.

$383 Roundtrip, found 1 day ago

$383

Roundtrip

found 1 day ago

Select Delta flight, departing Thu, Aug 21 from William P. Hobby to Pittsburgh Intl., returning Mon, Aug 25, priced at $383 found 1 day ago