Santa Rosa to Ontario (STS–ONT) — Airlines, Schedules & Connections

STS Airport Page →
423 mi airlines charter/private 7/wk
On-time Some delays Frequent delays
Flight Schedule 2 flights Verified 43m 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
✓
→
AS3032
AS Alaska
E75
2:09 PM
PDT
3:47 PM
PDT
1h 38m
—
M T W T F S S
Prices
✓
←
AS3031
AS Alaska
E75L
4:27 PM
PDT T2
6:07 PM
PDT
1h 40m
—
M T W T F S S
Prices

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.

✦ 1-Stop connections via 8 hubs
PHX Phoenix 4h 11m AAEJA → AAWN Phoenix (PHX) to Ontario flights
LAS Las Vegas 4h 55m ASWNXSR → EJAF9WN Las Vegas (LAS) to Ontario flights
SLC Salt Lake City 5h DL → AFAMDL Salt Lake City (SLC) to Ontario flights
PDX Portland 5h 4m AS → ASBA Portland (PDX) to Ontario flights
SEA Seattle 5h 37m ASJLQR → ASDLF9 Seattle (SEA) to Ontario flights
DEN Denver 6h 12m WN → ACF9UA Denver (DEN) to Ontario flights
DFW Dallas-Fort Worth 7h 24m AAQR → AABAF9 Dallas-Fort Worth (DFW) to Ontario flights
AUS Austin ~8h 15m WN → WN Austin (AUS) to Ontario flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Santa Rosa to Ontario
1 carrier, 7 flights/week nonstop.
1 Airlines 423 mi 1h 38m nonstop

STS–ONT is served by 1 airline with nonstop service. Alaska Airlines leads the route. The flight covers 423 miles in approximately 1h 38m. Beyond nonstop, 1-stop connecting options are also available.

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

Airline Landscape

All carriers operating nonstop STS–ONT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AS Alaska Airlines 7 E75 1h38 – Oneworld –
Aircraft on this route
E75 Embraer E175 – AS
Alliance coverage
Oneworld: AS (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, STS to ONT 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 STS to ONT.
1-STOP
One-Stop Connections
8
Hubs
~4h
Fastest
~8h
Longest
PHX ~4h 11m LAS ~4h 55m SLC ~5h 0m PDX ~5h 4m SEA ~5h 37m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
282
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
STS → ONT
0%
Frequent delays expected. Consider flexible booking.
Arriving
0%
Return
ONT → STS
100%
Generally reliable. Most flights run on time.
Departing
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ONT delays →
Alternatives

Other ways to reach Ontario from Santa Rosa

Nearby airports with service to Ontario International Airport.
Metric STS→ONT CCR→ONT OAK→ONT
Distance from STS – 55 mi 63 mi
Nonstop airlines 1 1 2
Weekly flights 7 – 54
Flight time 1h 38m 1h 7m 1h 20m
Concord (CCR) to Ontario flights · Oakland (OAK) to Ontario flights · San Francisco (SFO) to Ontario flights
Airports within 200 miles of STS with service to Ontario International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
0h
Ontario is 0 hours the same as Santa Rosa.
STS: PDT · ONT: PDT

When it's 6:00 PM in Santa Rosa, it's 6:00 PM in Ontario.
Distance & Flight Time
423 mi / 681 km
Nonstop flight time is approximately 1h 38m gate to gate.
Facts

STS–ONT Quick Facts

Key statistics for the Santa Rosa to Ontario route.
Route details
Distance423 mi / 681 km
Flight time1h 38m
Time difference0 hours
Airlines (nonstop)1
Weekly flights7 out / 7 return
1-stop connectionsAvailable
Origin: STS
Full nameCharles M. Schulz Sonoma County Airport
IATA / ICAOSTS / KSTS
TimezoneAmerica/Los_Angeles
Passengers/yr0.8M
Elevation128 ft / 39 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 STS to ONT flights.
Nonstop flights from Charles M. Schulz Sonoma County Airport to Ontario International Airport take about 1h 38m gate to gate. The route covers 423 miles.
1 airline operates flights from STS to ONT: Alaska Airlines.
This route has daily service. Check the schedule above for departure days and times in each direction.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Phoenix Sky Harbor, Harry Reid and Salt Lake City.
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.
Yes, return flights from ONT to STS are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include CCR, OAK and SFO. 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 STS to ONT

Charles M. Schulz Sonoma County Airport (STS) and Ontario International Airport (ONT) are connected by nonstop service from Alaska Airlines. With 7 weekly departures, this is a regularly served route.

STS to ONT Flight Duration and Schedule

Nonstop flight time from STS to ONT is about 1 hours 38 minutes gate to gate. The route covers a distance of 423 miles (681 km). There are approximately 7 weekly flights outbound and 7 return, totaling 14 flights per week in both directions.

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Phoenix Sky Harbor, Harry Reid and Salt Lake City. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Concord (CCR), Oakland (OAK) and San Francisco (SFO).