Route guide

Ontario to Baltimore (ONT-BWI): Nonstop Upgrade & Award Space

Southwest Airlines flies the ONT to BWI nonstop about 7 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every ONT to BWI departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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7
Nonstop flights a week
2,278 mi
Nonstop distance
Free
To get started

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

Airlines flying Ontario to Baltimore nonstop

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

  • Southwest Airlines
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Frequently asked questions about ONT to BWI

How far is Baltimore from Ontario?
ONT to BWI covers about 2,278 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from ONT to BWI?
Southwest Airlines is currently the only airline flying ONT to BWI nonstop. 2LNR tracks confirmed upgrade and award space on every Southwest Airlines departure.
How many flights a week are there from ONT to BWI?
About 7 nonstop flights a week run between Ontario and Baltimore in the current schedule, operated by Southwest Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on ONT to BWI?
Open the ONT to BWI calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Ontario to Baltimore route, and 2LNR will notify you when space opens. It's free to start.

Never miss ONT to BWI upgrade or award space

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

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