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 16 days ago

December 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$703 1$461 2$333 3$377 4$377 5$333 6$377 7$377 8$338 9$338 10$382 11$419 12$377 13$421 14$421 15$382 16$515 17$502 18$711 19$573 20$465 21$520 22$504 23$496 24$396 25$452 26$875 27$824 28$643 29$527 30$420 31$396 1$377 2$480 3$458

Limited Availability

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

Wednesday, December 9th, 2026

9 round-trip options

Returning

Mon, Dec 14, 2026•5 Day Trip

$377 USD

Google Flights

Returning

Tue, Dec 15, 2026•6 Day Trip

$350 USD

Google Flights

Returning

Wed, Dec 16, 2026•7 Day Trip

$338 USD

Google Flights

Returning

Thu, Dec 17, 2026•8 Day Trip

$377 USD

Google Flights

Returning

Sat, Dec 19, 2026•10 Day Trip

$462 USD

Google Flights

Returning

Sun, Dec 20, 2026•11 Day Trip

$377 USD

Google Flights

Returning

Mon, Dec 21, 2026•12 Day Trip

$377 USD

Google Flights

Returning

Tue, Dec 22, 2026•13 Day Trip

$410 USD

Google Flights

Returning

Wed, Dec 23, 2026•14 Day Trip

$407 USD

Google Flights

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

Philadelphia International Airport

Colorado Springs Airport

December 2026

Wednesday, December 9th, 2026