Flights from Phoenix to O'Fallon

Cheapest flights from Phoenix

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.

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$200 Roundtrip, found 2 days ago

$200

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $200 found 2 days ago

Thu, Aug 7 - Thu, Aug 14

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$205 Roundtrip, found 2 days ago

$205

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Thu, Aug 14, priced at $205 found 2 days ago

Sun, Aug 10 - Thu, Aug 14

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$220 Roundtrip, found 2 days ago

$220

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Sun, Aug 10 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Thu, Aug 14, priced at $220 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$270 Roundtrip, found 2 days ago

$270

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $270 found 2 days ago

Tue, Aug 5 - Tue, Aug 12

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Aug 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Tue, Aug 12, priced at $277 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$284 Roundtrip, found 2 days ago

$284

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Aug 11, priced at $284 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$285 Roundtrip, found 2 days ago

$285

Roundtrip

found 2 days ago

Select United flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $285 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$292 Roundtrip, found 2 days ago

$292

Roundtrip

found 2 days ago

Select United flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $292 found 2 days ago

Tue, Aug 5 - Sat, Aug 9

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Aug 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sat, Aug 9, priced at $297 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$299 Roundtrip, found 2 days ago

$299

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $299 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$307 Roundtrip, found 2 days ago

$307

Roundtrip

found 2 days ago

Select United flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $307 found 2 days ago

Tue, Aug 5 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$317 Roundtrip, found 2 days ago

$317

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Aug 5 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $317 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$320 Roundtrip, found 2 days ago

$320

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $320 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$323 Roundtrip, found 2 days ago

$323

Roundtrip

found 2 days ago

Select United flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $323 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$324 Roundtrip, found 2 days ago

$324

Roundtrip

found 2 days ago

Select American Airlines flight, departing Fri, Aug 8 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Aug 11, priced at $324 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$326 Roundtrip, found 2 days ago

$326

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $326 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$327 Roundtrip, found 2 days ago

$327

Roundtrip

found 2 days ago

Select United flight, departing Fri, Aug 8 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Aug 11, priced at $327 found 2 days ago

Thu, Aug 7 - Sun, Aug 10

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$330 Roundtrip, found 2 days ago

$330

Roundtrip

found 2 days ago

Select United flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sun, Aug 10, priced at $330 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$337 Roundtrip, found 2 days ago

$337

Roundtrip

found 2 days ago

Select American Airlines flight, departing Fri, Aug 8 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Aug 11, priced at $337 found 2 days ago

Fri, Aug 8 - Mon, Aug 11

PHX

Sky Harbor Intl.

STL

Lambert-St. Louis Intl.

$373 Roundtrip, found 2 days ago

$373

Roundtrip

found 2 days ago

Select United flight, departing Fri, Aug 8 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Mon, Aug 11, priced at $373 found 2 days ago