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

ONT Airport Page →
2,278 mi airlines 7/wk
On-time Some delays Frequent delays
Flight Schedule 2 flights Verified 36m ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
WN3648
WN Southwest
7M8
9:55 PM
PDT T4
5:40 AM+1
EDT
4h 45m
—
M T W T F S S
Prices
✓
←
WN2416
WN Southwest
B38M
12:45 PM
EDT
3:15 PM
PDT
5h 30m
—
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Ontario to Baltimore
1 carrier, 7 flights/week nonstop.
1 Airlines 7 Flights/wk 2,278 mi 4h 45m nonstop +3h ahead 36 1-stop hubs

ONT–BWI is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 2,278 miles in approximately 4h 45m. Beyond nonstop, 36 hubs offer 1-stop connections.

Also explore ONT Routes BWI Routes ONT Live Flights BWI Live Flights ONT Delays BWI Delays
Carriers on this route

Airline Landscape

All carriers operating nonstop ONT–BWI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 7 7M8 4h45 86% – –
Aircraft on this route
7M8 Boeing 737 MAX 8 – WN
Alliance coverage
Unaffiliated: WN (7 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, ONT to BWI direction.
Mon
1
flight
Tue
1
flight
Wed
1
flight
Thu
1
flight
Fri
1
flight
Sat
1
flight
Sun
1
flight
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
1
Nonstop flights
7
Outbound / wk
7
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for ONT to BWI.
1-STOP
One-Stop Connections
36
Hubs
~5h
Fastest
~25h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,247
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.
Alternatives

Other ways to reach Baltimore from Ontario

Nearby airports with service to Baltimore/Washington International Thurgood Marshall Airport.
Metric ONT→BWI SBD→BWI SNA→BWI
Distance from ONT – 21 mi 30 mi
Nonstop airlines 1 1 2
Weekly flights 7 2 –
Flight time 4h 45m 4h 4h 34m
Departure OTP 86% – –
San Bernardino (SBD) to Baltimore flights · Santa Ana (SNA) to Baltimore flights · Los Angeles (LAX) to Baltimore flights
Airports within 200 miles of ONT with service to Baltimore/Washington International Thurgood Marshall Airport.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Ontario, it's 9:00 PM in Baltimore.
Distance & Flight Time
2,278 mi / 3,666 km
Nonstop flight time is approximately 4h 45m.
Facts

ONT–BWI Quick Facts

Key statistics for the Ontario to Baltimore route.
Route details
Distance2,278 mi / 3,666 km
Flight time4h 45m
Time difference+3 hours
Airlines (nonstop)1
Weekly flights7 out / 7 return
1-stop connections36 hubs
Origin: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
Destination: BWI
Full nameBaltimore/Washington International Thurgood Marshall Airport
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m
FAQ

Frequently Asked Questions

Common questions about ONT to BWI flights.
Nonstop flights from Ontario International Airport to Baltimore/Washington International Thurgood Marshall Airport take approximately 4h 45m. The route covers 2,278 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 7 nonstop flights per week from ONT to BWI. The return direction has about 7 weekly flights.
Yes, 1-stop connections are available through ILN, SCF, AFW, SDF, HPN, CVG, EWR, SNA, SGR, OAK, SAV, MCO, FLL, SJD, NAS, MIA, MDW, ANC, SMF, ORD, CLT, SJC, BNA, ATL, SFO, PHX, DEN, DAL, SLC, IAH, SEA, DFW, LAS, HOU, AUS and PDX. These options provide additional schedule flexibility.
Baltimore is 3 hours ahead of Ontario.
Yes, return flights from BWI to ONT are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include SBD, SNA and LAX. 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 ONT to BWI

Ontario International Airport (ONT) and Baltimore/Washington International Thurgood Marshall Airport (BWI) are connected by nonstop service from Southwest Airlines. With 7 weekly departures, this is a regularly served route.

ONT to BWI Flight Duration and Schedule

Nonstop flight time from ONT to BWI ranges from 4 hours 45 minutes. The route covers a distance of 2,278 miles (3,666 km). There are approximately 7 weekly flights outbound and 7 return, totaling 14 flights per week in both directions.

Connecting Options and Alternatives

36 one-stop connections are available, with the fastest taking approximately 5 hours via ILN. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include San Bernardino (SBD), Santa Ana (SNA) and Los Angeles (LAX).