Route guide

Harlingen to Houston (HRL-IAH): Nonstop Upgrade & Award Space

United Airlines flies nonstop between Harlingen (HRL) and Houston (IAH), roughly 22 times a week. With United Airlines 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 HRL to IAH 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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22
Nonstop flights a week
295 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every HRL to IAH 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 Harlingen to Houston 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 HRL to IAH 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 HRL to IAH on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Harlingen to Houston nonstop

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

  • United Airlines
See HRL to IAH on the interactive map →

Frequently asked questions about HRL to IAH

How far is Houston from Harlingen?
HRL to IAH covers about 295 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from HRL to IAH?
United Airlines is currently the only airline flying HRL to IAH nonstop. 2LNR tracks confirmed upgrade and award space on every United Airlines departure.
How many flights a week are there from HRL to IAH?
About 22 nonstop flights a week run between Harlingen and Houston in the current schedule, operated by United Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on HRL to IAH?
Open the HRL to IAH calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Harlingen to Houston route, and 2LNR will notify you when space opens. It's free to start.

Never miss HRL to IAH upgrade or award space

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