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

STS Airport Page →
423 mi airlines 14/wk
On-time Some delays Frequent delays
Flight Schedule 4 flights Verified 1h ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
AS3273
AS Alaska
E75L
10:41 AM
PDT
12:08 PM
PDT
1h 27m
—
M T W T F S S
Prices
✓
→
AS2440
AS Alaska
E75
5:44 PM
PDT
7:08 PM
PDT
1h 24m
—
M T W T F S S
Prices
✓
←
AS3273
AS Alaska
E75L
12:48 PM
PDT T2
2:20 PM
PDT
1h 32m
—
M T W T F S S
Prices
✓
←
AS2440
AS Alaska
E75
3:35 PM
PDT T2
5:04 PM
PDT
1h 29m
—
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
Santa Rosa to Ontario
1 carrier, 14 flights/week nonstop.
1 Airlines 14 Flights/wk 423 mi 1h 24m nonstop 19 1-stop hubs

STS–ONT is served by 1 airline with nonstop service. Alaska Airlines leads the route. The flight covers 423 miles in approximately 1h 24m. Beyond nonstop, 19 hubs offer 1-stop connections.

Also explore STS Routes ONT Routes STS Live Flights ONT Live Flights ONT Delays
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 14 E75, E75L 1h24-1h27 – Oneworld –
Aircraft on this route
E75 Embraer E175 – AS
E75L Embraer E175 Long Wing – AS
Alliance coverage
Oneworld: AS (14 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
2
flights
Tue
2
flights
Wed
2
flights
Thu
2
flights
Fri
2
flights
Sat
2
flights
Sun
2
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
2
Nonstop flights
14
Outbound / wk
14
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STS to ONT.
1-STOP
One-Stop Connections
19
Hubs
~2h
Fastest
~21h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
267
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 Ontario from Santa Rosa

Nearby airports with service to Ontario International Airport.
Metric STS→ONT OAK→ONT SFO→ONT
Distance from STS – 63 mi 66 mi
Nonstop airlines 1 2 9
Weekly flights 14 27 78
Flight time 1h 24m 1h 12m 1h 29m
Oakland (OAK) to Ontario flights · San Francisco (SFO) to Ontario flights · Sacramento (SMF) 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 24m to 1h 27m.
Facts

STS–ONT Quick Facts

Key statistics for the Santa Rosa to Ontario route.
Route details
Distance423 mi / 681 km
Flight time1h 24m to 1h 27m
Time difference0 hours
Airlines (nonstop)1
Weekly flights14 out / 14 return
1-stop connections19 hubs
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 approximately 1h 24m to 1h 27m. The route covers 423 miles.
1 airline operates nonstop service: Alaska Airlines.
There are approximately 14 nonstop flights per week from STS to ONT. The return direction has about 14 weekly flights.
Yes, 1-stop connections are available through VNY, OAK, BUR, SCF, SLC, SFO, DAL, AUS, HOU, MDW, BNA, PBI, FLL, PDX, LAS, PHX, DEN, DFW and SEA. These options provide additional schedule flexibility.
Yes, return flights from ONT to STS are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include OAK, SFO and SMF. 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 14 weekly departures, this is a well served route.

STS to ONT Flight Duration and Schedule

Nonstop flight time from STS to ONT ranges from 1 hours 24 minutes to 1 hours 27 minutes. The route covers a distance of 423 miles (681 km). There are approximately 14 weekly flights outbound and 14 return, totaling 28 flights per week in both directions.

Connecting Options and Alternatives

19 one-stop connections are available, with the fastest taking approximately 2 hours via VNY. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Oakland (OAK), San Francisco (SFO) and Sacramento (SMF).