Airline route map

Where does Allegiant Air fly? The G4 route map

Allegiant Air (G4) operates nonstop service on 451 routes in 2LNR's schedule data, touching 120 airports across its network. The busiest G4 markets include Catasauqua to Midway, Sunnyside to Las Vegas, and Fletcher to Fort Lauderdale. Premium cabins on a network this size behave unevenly: some corridors show upgrade and award space daily while others almost never open. 2LNR tracks confirmed availability on every covered G4 route, so you can see which ones actually clear.

Data current as of July 31, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

451
Nonstop routes
120
Airports served
Free
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What 2LNR tracks on Allegiant Air

2LNR tracks confirmed upgrade inventory on American, Delta, and Alaska, and award availability across roughly 30 airlines, segment by segment and date by date. Open any G4 route below for a calendar of what is actually open, or watch a route and get alerted when space appears.

Availability by date

Each route opens a calendar of departures with confirmed upgrade and award space, so you can see which dates already have room instead of checking one flight at a time.

Alerts when space opens

Premium seats turn over fast. Watch a G4 route and 2LNR notifies you by email, SMS, in-app, and push the moment space appears.

The whole network on a map

Filter the interactive route map to G4 to see the network, compare connections, and jump into any route from there.

Every Allegiant Air nonstop route

451 nonstop routes across 120 airports, grouped by departure city. Each route links to its confirmed upgrade and award availability.

Fort Lauderdale (FLL)

Las Vegas (LAS)

Queen Creek (AZA)

Frequently asked questions about Allegiant Air (G4) routes

Where does Allegiant Air fly nonstop?
Allegiant Air operates 451 nonstop routes serving 120 airports in 2LNR's schedule data. The busiest are Catasauqua to Midway, Sunnyside to Las Vegas, and Fletcher to Fort Lauderdale. The full list is on this page, and each route opens its own calendar of confirmed upgrade and award space.
How many routes does Allegiant Air (G4) operate?
G4 currently shows 451 nonstop routes between 120 airports. Schedules change seasonally, so this page updates as new G4 schedule data is confirmed.
Does 2LNR track upgrades on Allegiant Air?
2LNR tracks confirmed upgrade inventory on American, Delta, and Alaska, and award availability across roughly 30 airlines. Each G4 route below links to a calendar of what 2LNR tracks for Allegiant Air by date.
How do I check availability on a specific G4 route?
Open a route such as Catasauqua to Midway from the list on this page to see G4 departures date by date with confirmed upgrade and award space. You can also set an alert, and 2LNR will notify you when space opens on a G4 route you are watching.

Never miss G4 upgrade or award space

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