Route guide

Baltimore to Houston (BWI-IAH): Nonstop Upgrade & Award Space

United Airlines and Frontier Airlines fly nonstop between Baltimore (BWI) and Houston (IAH), roughly 23 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every BWI 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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23
Nonstop flights a week
1,234 mi
Nonstop distance
Free
To get started

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

Airlines flying Baltimore to Houston nonstop

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

  • United Airlines
  • Frontier Airlines
See BWI to IAH on the interactive map →

Frequently asked questions about BWI to IAH

How far is Houston from Baltimore?
BWI to IAH covers about 1,234 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from BWI to IAH?
United Airlines and Frontier Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on both of them.
How many flights a week are there from BWI to IAH?
About 23 nonstop flights a week run between Baltimore and Houston in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on BWI to IAH?
Open the BWI to IAH calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Baltimore to Houston route, and 2LNR will notify you when space opens. It's free to start.

Never miss BWI to IAH upgrade or award space

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