Airport route guide

Upgrade & Award Space from Denver (DEN)

Denver International Airport (DEN) has active nonstop service to 235 destinations from Denver, US, led by United Airlines, Southwest Airlines, and Frontier Airlines. Premium seats move quickly on the busiest corridors, including Chicago, Dallas, and Seattle, where upgrade and award space can open and close within hours. 2LNR tracks confirmed availability on every DEN route, so you know which Denver 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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235
Nonstop destinations
30+
Airlines in award search
Free
To get started

Confirmed upgrade & award space on every DEN route

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Pick any Denver destination below to open a calendar of departures with real availability, or watch a route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each DEN route, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch a Denver route and 2LNR notifies you when space appears.

Plan on the map

Explore every DEN nonstop on the interactive route map, with connections and route statistics.

All nonstop destinations from Denver (DEN)

235 nonstop destinations with active service from Denver International Airport. Each route links to its confirmed upgrade and award availability.

Explore DEN routes on the interactive map →

Frequently asked questions about Denver (DEN)

How many nonstop destinations does Denver International Airport (DEN) serve?
Denver International Airport has active nonstop service to 235 destinations. The busiest markets from DEN are Chicago, Dallas, and Seattle. The full list, with live upgrade and award availability for each route, is on this page.
Which airlines fly upgrade-trackable routes from DEN?
United Airlines, Southwest Airlines, and Frontier Airlines operate the most tracked routes from Denver, in that order. 2LNR covers upgrade and award space on more than 30 airlines, so other carriers serving DEN appear on their routes as well.
How do I check upgrade or award availability from DEN?
Pick any destination on this page, such as Chicago, to open a calendar of DEN departures with confirmed upgrade and award space, date by date. You can also set an alert so 2LNR notifies you when space opens on a route you care about.
Does 2LNR track flights from DEN?
Yes. Every active nonstop route from Denver International Airport is tracked, 235 destinations in total, and what's shown is confirmed availability rather than a forecast. It's free to start.

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