Airport route guide

Upgrade & Award Space from Houston (IAH)

George Bush Intercontinental Airport (IAH) has active nonstop service to 199 destinations from Houston, US, led by United Airlines, Frontier Airlines, and American Airlines. Premium seats move quickly on the busiest corridors, including Los Angeles, Chicago, and Dallas, where upgrade and award space can open and close within hours. 2LNR tracks confirmed availability on every IAH route, so you know which Houston 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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199
Nonstop destinations
30+
Airlines in award search
Free
To get started

Confirmed upgrade & award space on every IAH 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 Houston 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 IAH route, checked against live inventory so you know what is open before you book.

Set an alert

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

Plan on the map

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

All nonstop destinations from Houston (IAH)

199 nonstop destinations with active service from George Bush Intercontinental Airport. Each route links to its confirmed upgrade and award availability.

Explore IAH routes on the interactive map →

Frequently asked questions about Houston (IAH)

How many nonstop destinations does George Bush Intercontinental Airport (IAH) serve?
George Bush Intercontinental Airport has active nonstop service to 199 destinations. The busiest markets from IAH are Los Angeles, Chicago, and Dallas. The full list, with live upgrade and award availability for each route, is on this page.
Which airlines fly upgrade-trackable routes from IAH?
United Airlines, Frontier Airlines, and American Airlines operate the most tracked routes from Houston, in that order. 2LNR covers upgrade and award space on more than 30 airlines, so other carriers serving IAH appear on their routes as well.
How do I check upgrade or award availability from IAH?
Pick any destination on this page, such as Los Angeles, to open a calendar of IAH 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 IAH?
Yes. Every active nonstop route from George Bush Intercontinental Airport is tracked, 199 destinations in total, and what's shown is confirmed availability rather than a forecast. It's free to start.

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