Flights from Houston to Alton

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.

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$289 Roundtrip, found 2 days ago

$289

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $289 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$314 Roundtrip, found 2 days ago

$314

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $314 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$339 Roundtrip, found 2 days ago

$339

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $339 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$341 Roundtrip, found 2 days ago

$341

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $341 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$344 Roundtrip, found 2 days ago

$344

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $344 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$346 Roundtrip, found 2 days ago

$346

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $346 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$350 Roundtrip, found 2 days ago

$350

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $350 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$356 Roundtrip, found 2 days ago

$356

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $356 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$369 Roundtrip, found 2 days ago

$369

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $369 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$372 Roundtrip, found 2 days ago

$372

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $372 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$379 Roundtrip, found 2 days ago

$379

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $379 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$381 Roundtrip, found 2 days ago

$381

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $381 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$384 Roundtrip, found 2 days ago

$384

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $384 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$386 Roundtrip, found 2 days ago

$386

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $386 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$388 Roundtrip, found 2 days ago

$388

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $388 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$394 Roundtrip, found 2 days ago

$394

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $394 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$396 Roundtrip, found 2 days ago

$396

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $396 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$398 Roundtrip, found 2 days ago

$398

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $398 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$399 Roundtrip, found 2 days ago

$399

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $399 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

IAH

George Bush Intercontinental

PWM

Portland Intl. Jetport

$404 Roundtrip, found 2 days ago

$404

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sun, Sep 21 from George Bush Intercontinental to Portland Intl. Jetport, returning Mon, Sep 29, priced at $404 found 2 days ago