Cheapest weekends to fly Phoenix to Denver nonstop

We price every nonstop weekend round-trip (2–4 nights, leaving Thu–Sat) on PHX → DEN and rank the weekends below by date. Right now the cheapest is Sep 19–22 at $68 round-trip — 47% below this route's typical short-trip price. Updated August 30, 2026.

Sat, Sep 5 → Tue, Sep 8 3 nights

F9 Frontier

$128 Check this weekend →

Fri, Sep 11 → Mon, Sep 14 3 nights

F9 Frontier 36% below typical

$83 Check this weekend →

Cheapest weekend

Sat, Sep 19 → Tue, Sep 22 3 nights

F9 Frontier 47% below typical

$68 Check this weekend →

Sat, Sep 26 → Tue, Sep 29 3 nights

F9 Frontier 40% below typical

$78 Check this weekend →

Sat, Oct 3 → Tue, Oct 6 3 nights

F9 Frontier 32% below typical

$88 Check this weekend →

Sat, Oct 10 → Tue, Oct 13 3 nights

F9 Frontier 40% below typical

$78 Check this weekend →

Sat, Oct 17 → Tue, Oct 20 3 nights

F9 Frontier 40% below typical

$78 Check this weekend →

Sat, Oct 24 → Tue, Oct 27 3 nights

F9 Frontier 47% below typical

$68 Check this weekend →

Sat, Oct 31 → Tue, Nov 3 3 nights

F9 Frontier 40% below typical

$78 Check this weekend →

Sat, Nov 7 → Tue, Nov 10 3 nights

F9 Frontier 40% below typical

$78 Check this weekend →

Sat, Nov 14 → Tue, Nov 17 3 nights

F9 Frontier 47% below typical

$68 Check this weekend →

Thu, Nov 19 → Sun, Nov 22 3 nights

F9 Frontier

$132 Check this weekend →

Prices are the cheapest nonstop round-trip we found for each weekend, checked within the last 14 days. Fares move — "Check this weekend" re-prices the exact dates live.