Flights from Allentown to Houston

Cheapest flights from Allentown

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, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$200 Roundtrip, found 4 days ago

$200

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $200 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$210 Roundtrip, found 4 days ago

$210

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $210 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$238 Roundtrip, found 4 days ago

$238

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $238 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$248 Roundtrip, found 4 days ago

$248

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $248 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$263 Roundtrip, found 4 days ago

$263

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $263 found 4 days ago

Sat, Jul 26 - Tue, Jul 29

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$273 Roundtrip, found 5 days ago

$273

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Sat, Jul 26 from Philadelphia Intl. to George Bush Intercontinental, returning Tue, Jul 29, priced at $273 found 5 days ago

Sat, Jul 26 - Sun, Jul 27

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$293 Roundtrip, found 5 days ago

$293

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Sat, Jul 26 from Philadelphia Intl. to George Bush Intercontinental, returning Sun, Jul 27, priced at $293 found 5 days ago

Sun, Jul 27 - Tue, Jul 29

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$294 Roundtrip, found 5 days ago

$294

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Sun, Jul 27 from Philadelphia Intl. to George Bush Intercontinental, returning Tue, Jul 29, priced at $294 found 5 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$298 Roundtrip, found 4 days ago

$298

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $298 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$304 Roundtrip, found 4 days ago

$304

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $304 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$309 Roundtrip, found 4 days ago

$309

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $309 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$319 Roundtrip, found 4 days ago

$319

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $319 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$329 Roundtrip, found 4 days ago

$329

Roundtrip

found 4 days ago

Select United flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $329 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$330 Roundtrip, found 4 days ago

$330

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $330 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$335 Roundtrip, found 4 days ago

$335

Roundtrip

found 4 days ago

Select United flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $335 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$345 Roundtrip, found 4 days ago

$345

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $345 found 4 days ago

Tue, Jul 29 - Tue, Jul 29

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$350 Roundtrip, found 5 days ago

$350

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Tue, Jul 29, priced at $350 found 5 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$356 Roundtrip, found 4 days ago

$356

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $356 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$359 Roundtrip, found 4 days ago

$359

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $359 found 4 days ago

Tue, Jul 29 - Sat, Aug 2

PHL

Philadelphia Intl.

IAH

George Bush Intercontinental

$361 Roundtrip, found 4 days ago

$361

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jul 29 from Philadelphia Intl. to George Bush Intercontinental, returning Sat, Aug 2, priced at $361 found 4 days ago