Route guide

Atlanta to Security-Widefield (ATL-COS): Nonstop Upgrade & Award Space

Delta Air Lines flies nonstop between Atlanta (ATL) and Security-Widefield (COS), roughly 14 times a week. With Delta Air Lines operating this route so often, premium seats still turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every ATL to COS departure, so you know which flights have space before you book.

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

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14
Nonstop flights a week
1,182 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every ATL to COS 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 Atlanta to Security-Widefield 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 ATL to COS 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 ATL to COS on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Atlanta to Security-Widefield nonstop

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

  • Delta Air Lines
See ATL to COS on the interactive map →

Frequently asked questions about ATL to COS

How far is Security-Widefield from Atlanta?
ATL to COS covers about 1,182 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from ATL to COS?
Delta Air Lines is currently the only airline flying ATL to COS nonstop. 2LNR tracks confirmed upgrade and award space on every Delta Air Lines departure.
How many flights a week are there from ATL to COS?
About 14 nonstop flights a week run between Atlanta and Security-Widefield in the current schedule, operated by Delta Air Lines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on ATL to COS?
Open the ATL to COS calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Atlanta to Security-Widefield route, and 2LNR will notify you when space opens. It's free to start.

Never miss ATL to COS upgrade or award space

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

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