Alaska Airlines Flights from Philadelphia to Denver

Flexpay logo

Book now. Pay later.

Spread the cost of your flight over low monthly payments.

Learn more

Lowest fares from Philadelphia to Denver

Jun 2025
From$636*
Seen: 8 hours ago
Flight Type One Way|Saver
$636
Displaying fares for June-2025
06

Fr

JUN

07

Sa

08

Su

09

Mo

10

Tu

11

We

12

Th

13

Fr

14

Sa

15

Su

16

Mo

17

Tu

18

We

19

Th

20

Fr

21

Sa

22

Su

23

Mo

24

Tu

25

We

26

Th

27

Fr

28

Sa

29

Su

30

Mo

01

Tu

JUL

02

We

03

Th

04

Fr

05

Sa

Range$636

*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

One-way low-fare flights Philadelphia to Denver.*

keyboard_arrow_down
sort
keyboard_arrow_down
One-way low-fare flights Philadelphia to Denver.*
From
To
Fare Type
Dates
Price
Philadelphia (PHL)Denver (DEN)One-way
|
Saver		Depart: Jul 14, 2025

From

$327

Seen: 13 hours ago

Philadelphia (PHL)Denver (DEN)One-way
|
Saver		Depart: Jun 18, 2025

From

$636

Seen: 8 hours ago

*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

Looking for more? See other routes

Explore Alaska Airlines's Flights to Top-Pick Destinations