Baltimore to Ontario (BWI–ONT) — Airlines, Schedules & Connections

BWI Airport Page →
2,278 mi airlines charter/private
On-time Some delays Frequent delays
Connecting Flight Schedule 20 1-stop flights Verified 1mo ago
Also flown by charter / private operators.
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

Last scheduled nonstop: Aug 2026.

✦ 1-Stop connections via 10 hubs
PHX Phoenix 6h 55m SYWN → AAWN Phoenix (PHX) to Ontario flights
BNA Nashville 6h 58m AAWN → WN Nashville (BNA) to Ontario flights
MDW Chicago 7h WN → WN Chicago (MDW) to Ontario flights
DAL Dallas 7h WN → WN Dallas (DAL) to Ontario flights
DEN Denver 7h 2m UAWN → ACF9UA Denver (DEN) to Ontario flights
LAS Las Vegas 7h 5m WN → EJAF9WN Las Vegas (LAS) to Ontario flights
ATL Atlanta 7h 6m AFAMDL → AFAMDL Atlanta (ATL) to Ontario flights
DFW Dallas-Fort Worth 7h 12m AACXF9 → AABAF9 Dallas-Fort Worth (DFW) to Ontario flights
SLC Salt Lake City 7h 27m DLKEWN → AFAMDL Salt Lake City (SLC) to Ontario flights
HOU Houston 7h 28m WN → WN Houston (HOU) to Ontario flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Baltimore to Ontario
Connecting service available through multiple hubs.
1 Airlines 2,278 mi 5h 15m nonstop -3h behind

BWI–ONT had nonstop service from Southwest Airlines, last on the schedule in August 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 2,278 miles in 5h 15m.

Also explore Browse available seat maps BWI Routes ONT Routes BWI Live Flights ONT Live Flights BWI Delays ONT Delays
All flights from Ontario (ONT) Ontario to Baltimore flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop BWI–ONT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 0 – – 100% – –
Alliance coverage
Unaffiliated: WN (0 flights/wk, 0%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for BWI to ONT.
1-STOP
One-Stop Connections
20
Hubs
~6h
Fastest
~9h
Longest
PHX ~6h 55m BNA ~6h 58m MDW ~7h 0m DAL ~7h 0m DEN ~7h 2m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,185
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
BWI → ONT
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
80%
Return
ONT → BWI
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
88%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. BWI delays → ONT delays →
Alternatives

Other ways to reach Ontario from Baltimore

Nearby airports with service to Ontario International Airport.
Metric BWI→ONT IAD→ONT PHL→ONT
Distance from BWI – 45 mi 90 mi
Nonstop airlines – 1 1
Weekly flights – – 1
Flight time 5h 15m 5h 4m 4h 49m
Departure OTP 100% – –
Dulles (IAD) to Ontario flights · Philadelphia (PHL) to Ontario flights
Airports within 200 miles of BWI with service to Ontario International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-3h
Ontario is 3 hours behind Baltimore.
BWI: EDT · ONT: PDT

When it's 6:00 PM in Baltimore, it's 3:00 PM in Ontario.
Distance & Flight Time
2,278 mi / 3,666 km
Nonstop flight time is approximately 5h 15m gate to gate.
Facts

BWI–ONT Quick Facts

Key statistics for the Baltimore to Ontario route.
Route details
Distance2,278 mi / 3,666 km
Flight time5h 15m
Time difference-3 hours
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: BWI
Full nameBaltimore/Washington International Thurgood Marshall Airport
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m
Destination: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
FAQ

Frequently Asked Questions

Common questions about BWI to ONT flights.
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Ontario International Airport take about 5h 15m gate to gate. The route covers 2,278 miles.
1 airline operated the nonstop from BWI to ONT: Southwest Airlines. The last scheduled nonstop was in August 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in August 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 5h 15m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Phoenix Sky Harbor, Nashville and Chicago Midway.
On a single ticket, yes. Your bags are checked through to ONT and move between planes without you. On two separate tickets you collect your bags at the connecting airport and recheck them, so build in extra layover time.
Ontario is 3 hours behind Baltimore.
Yes, return flights from ONT to BWI are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include IAD and PHL. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from BWI to ONT

Baltimore/Washington International Thurgood Marshall Airport (BWI) and Ontario International Airport (ONT) had nonstop service from Southwest Airlines, last on the schedule in August 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

BWI to ONT Flight Duration and Schedule

Nonstop flight time from BWI to ONT is about 5 hours 15 minutes gate to gate. The route covers a distance of 2,278 miles (3,666 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Phoenix Sky Harbor, Nashville and Chicago Midway. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Dulles (IAD) and Philadelphia (PHL).