PHL to COS from $333 in economy

UAUnited Airlines

Round Trip•Economy

PHL

Philadelphia International Airport

Philadelphia, United States

COS

Colorado Springs Airport

Colorado Springs, United States

$475 USD

-30%$333 USD

Verified 15 days ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$377 1$333 2$333 3$447 4$447 5$333 6$333 7$377 8$333 9$333 10$396 11$407 12$333 13$377 14$377 15$333 16$333 17$447 18$494 19$333 20$396 21$377 22$333 23$333 24$377 25$377 26$333 27$447 28$377 29$333 30$333 1$377 2$377 3$333 4$377

Limited Availability

12% of dates checked are available within 10% of the lowest price

Friday, September 18th, 2026

8 round-trip options

Returning

Wed, Sep 23, 2026•5 Day Trip

$494 USD

Google Flights

Returning

Thu, Sep 24, 2026•6 Day Trip

$569 USD

Google Flights

Returning

Fri, Sep 25, 2026•7 Day Trip

$538 USD

Google Flights

Returning

Sun, Sep 27, 2026•9 Day Trip

$711 USD

Google Flights

Returning

Mon, Sep 28, 2026•10 Day Trip

$538 USD

Google Flights

Returning

Tue, Sep 29, 2026•11 Day Trip

$494 USD

Google Flights

Returning

Wed, Sep 30, 2026•12 Day Trip

$499 USD

Google Flights

Returning

Thu, Oct 1, 2026•13 Day Trip

$538 USD

Google Flights

Philadelphia (PHL) to Colorado Springs (COS) flight deal in economy from $333

Philadelphia International Airport

Colorado Springs Airport

September 2026

Friday, September 18th, 2026