How the cheapest fare moved
Jul 18: €154 €154
Jul 15
Jul 18
low €92 · high €154
Departure-day prices · September 2026 Philadelphia → Denver
‹ Prev
Next ›
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 €154 22
23
24
25
26
27
28
29
30
Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Return-day prices · September 2026 Denver → Philadelphia
‹ Prev
Next ›
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2
3
4
5
6
7
8
9
10 €106 11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Best time to visit Denver — climate Jan: ~2°C daytime, 7 rainy days
2°
Jan Feb: ~6°C daytime, 7 rainy days
6°
Feb Mar: ~16°C daytime, 7 rainy days
16°
Mar Apr: ~18°C daytime, 6 rainy days
18°
Apr May: ~22°C daytime, 14 rainy days
22°
May Jun: ~29°C daytime, 8 rainy days
29°
Jun Jul: ~33°C daytime, 6 rainy days
33°
Jul Aug: ~31°C daytime, 12 rainy days
31°
Aug Sep: ~27°C daytime, 6 rainy days
27°
Sep Oct: ~20°C daytime, 5 rainy days
20°
Oct Nov: ~15°C daytime, 1 rainy days
15°
Nov Dec: ~12°C daytime, 3 rainy days
12°
Dec Best value: Sep — fares from €92 and ~27°C daytime.
Flights from Philadelphia to Denver start around €92 (typically 1 stop). Range seen recently: €92–163, based on 4 fares found by travellers.
Fly (from €92)
4h 14m duration
€92–163 recent fares
Book
Cheapest cached fares Philadelphia → Denver; typically 1 stop (e.g. F9). · Based on 4 fares found by travellers in the last 48h
Cheapest round trips to Denver Fares found by travellers in the last 48 hours — refreshed daily.
Sep 21 – Sep 26
Frontier Airlines · 1 stop · 6h 05m
€154
Book
Aug 17 – Aug 22
Frontier Airlines · 2 stops · 7h 30m
€166
Book
Aug 1 – Sep 2
Frontier Airlines · 1 stop · 5h 52m
€218
Book
Jan 7 – Jan 12
American Airlines · Direct · 4h 29m
€287
Book
Jan 6 – Jan 13
American Airlines · Direct · 4h 29m
€287
Book
Jul 26 – Aug 6
Frontier Airlines · 1 stop · 6h 41m
€320
Book
Weather in Denver
Tue
☁️
36°
21°
💧14%
Wed
🌦️
36°
19°
💧23%
Thu
🌦️
32°
18°
💧84%
Fri
🌦️
37°
23°
💧53%
Sat
☁️
41°
26°
💧21%
Sun
☁️
40°
26°
💧32%
Mon
☁️
40°
26°
💧40%
In Sep, Denver typically sees ~27°C daytime highs and 6 rainy days.
Where to stay in Denver 3★+ hotels from €86/night (40 hotels sampled, ~3 weeks out).
DoubleTree by Hilton Hotel Denver
hotel · Denver
from €86/night ★ 4
Renaissance Denver Hotel & Conference Center
hotel · Denver
from €97/night ★ 4
Baymont by Wyndham Denver International Airport
hotel · Denver
from €101/night ★ 3
Good to know Time difference -2h
Time in the air 4h 29m
Things to do in Denver Top-rated tours and tickets from €34 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About Denver
Denver is the capital of the western U.S. state of Colorado and the dominant city of the Rocky Mountain Region. Founded in 1858 as the placer gold mining camp known as the Cherry Creek Diggings, the "Mile-High City" is today the most populous city within a 560-mile (900 km) radius and the center of the Front Range Urban Corridor of more than five million residents.
Read the full Denver guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from Philadelphia Cheapest destinations travellers searched recently — refreshed daily.
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo ; exchange rates: ECB reference. Data updated 2026-07-22. Some links earn Stayonomy a commission at no cost to you.