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

ONT Airport Page →
423 mi airlines 7/wk
On-time Some delays Frequent delays
Flight Schedule 2 flights Verified 8h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✓
→
AS3273
AS Alaska
E75
4:22 PM
PDT T2
6:22 PM
PDT
2h
—
M T W T F S S
Prices
✓
←
AS3273
AS Alaska
E75
2:12 PM
PDT
3:42 PM
PDT
1h 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
✧ 2-STOP Loading...
Ontario to Santa Rosa
1 carrier, 7 flights/week nonstop.
1 Airlines 7 Flights/wk 423 mi 2h nonstop 17 1-stop hubs

ONT–STS is served by 1 airline with nonstop service. Alaska Airlines leads the route. The flight covers 423 miles in approximately 2h. Beyond nonstop, 17 hubs offer 1-stop connections.

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

Airline Landscape

All carriers operating nonstop ONT–STS service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AS Alaska Airlines 7 E75 2h 78% 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, ONT to STS 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 STS.
1-STOP
One-Stop Connections
17
Hubs
~3h
Fastest
~22h
Longest
SJC ~3h 10m OAK ~3h 25m SMF ~3h 43m BUR ~3h 43m PSP ~3h 46m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
244
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
ONT → STS
78%
Generally reliable. Most flights run on time.
Departing
78%
Return
STS → ONT
66%
Moderate delays possible. Allow buffer time.
Arriving
66%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ONT delays →
Alternatives

Other ways to reach Santa Rosa from Ontario

Nearby airports with service to Charles M. Schulz Sonoma County Airport.
Metric ONT→STS SNA→STS BUR→STS
Distance from ONT – 30 mi 44 mi
Nonstop airlines 1 2 2
Weekly flights 7 21 19
Flight time 2h 1h 48m 1h 30m
Departure OTP 78% – –
Santa Ana (SNA) to Santa Rosa flights · Burbank (BUR) to Santa Rosa flights · Los Angeles (LAX) to Santa Rosa flights
Airports within 200 miles of ONT with service to Charles M. Schulz Sonoma County Airport.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Ontario, it's 6:00 PM in Santa Rosa.
Distance & Flight Time
423 mi / 681 km
Nonstop flight time is approximately 2h 0m.
Facts

ONT–STS Quick Facts

Key statistics for the Ontario to Santa Rosa route.
Route details
Distance423 mi / 681 km
Flight time2h
Time difference0 hours
Airlines (nonstop)1
Weekly flights7 out / 7 return
1-stop connections17 hubs
Origin: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
Destination: STS
Full nameCharles M. Schulz Sonoma County Airport
IATA / ICAOSTS / KSTS
TimezoneAmerica/Los_Angeles
Passengers/yr0.8M
Elevation128 ft / 39 m
FAQ

Frequently Asked Questions

Common questions about ONT to STS flights.
Nonstop flights from Ontario International Airport to Charles M. Schulz Sonoma County Airport take approximately 2h. The route covers 423 miles.
1 airline operates nonstop service: Alaska Airlines.
There are approximately 7 nonstop flights per week from ONT to STS. The return direction has about 7 weekly flights.
Yes, 1-stop connections are available through SJC, OAK, SMF, BUR, PSP, BOI, SLC, DAL, HOU, AUS, MDW, ORD, PDX, SEA, LAS, PHX and DEN. These options provide additional schedule flexibility.
Yes, return flights from STS to ONT are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include SNA, BUR 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 STS

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

ONT to STS Flight Duration and Schedule

Nonstop flight time from ONT to STS ranges from 2 hours 0 minutes. 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

17 one-stop connections are available, with the fastest taking approximately 3 hours via SJC. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Santa Ana (SNA), Burbank (BUR) and Los Angeles (LAX).