Route guide

Security-Widefield to Phoenix (COS-PHX): Nonstop Upgrade & Award Space

Southwest Airlines flies the COS to PHX nonstop about 9 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every COS to PHX departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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9
Nonstop flights a week
551 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every COS to PHX departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Security-Widefield to Phoenix to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each COS to PHX departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See COS to PHX on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Security-Widefield to Phoenix nonstop

Carriers operating COS to PHX nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Southwest Airlines
See COS to PHX on the interactive map →

Frequently asked questions about COS to PHX

How far is Phoenix from Security-Widefield?
COS to PHX covers about 551 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from COS to PHX?
Southwest Airlines is currently the only airline flying COS to PHX nonstop. 2LNR tracks confirmed upgrade and award space on every Southwest Airlines departure.
How many flights a week are there from COS to PHX?
About 9 nonstop flights a week run between Security-Widefield and Phoenix in the current schedule, operated by Southwest Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on COS to PHX?
Open the COS to PHX calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Security-Widefield to Phoenix route, and 2LNR will notify you when space opens. It's free to start.

Never miss COS to PHX upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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