Cheap flights from San Jose, California to Ontario from $61 SJC → ONT
Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT)
The cheapest return found recently is $163 with Southwest Airlines, 24 Dec – 15 Jan 2027, found 5 days ago. The cheapest one-way found recently is $61 with Southwest Airlines, 20 Jan 2027, found today.
- Cheapest one-way found recently
- $61, found today
- Cheapest return found recently
- $163, 24 Dec to 15 Jan 2027
- Cheapest month to fly
- January 2027, one-way fares from $61 found in the last 7 days
- Airlines with nonstop flights
- Southwest Airlines
- Shortest nonstop flight found
- 1 h 15 min
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$163
24 Dec – 15 Jan 2027 · Southwest Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT)
Leaves 4:35 p.m. · Return leaves 7:55 p.m. · 2 h 30 min of travel, both ways together
out nonstop, back nonstop
found 5 days ago
Cheapest nonstop return
$163
24 Dec – 15 Jan 2027 · Southwest Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT)
Leaves 4:35 p.m. · Return leaves 7:55 p.m. · 2 h 30 min of travel, both ways together
out nonstop, back nonstop
found 5 days ago
Found recently, and the cheapest we hold
$163 24 Dec – 15 Jan 2027found 5 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $92 to $622.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 22-night return fares leaving within 3 days of 24 Dec to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Dec – 15 Jan 2027 | $163 | Southwest Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
Airlines on the cheapest dates: Southwest Airlines.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $76 to $141.
Cheapest one-way found recently
$61
20 Jan 2027 · Southwest Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT)
Leaves 9:20 a.m. · 1 h 15 min trip
stops unknown
found today
Cheapest nonstop one-way
$81
16 Dec · Southwest Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT)
Leaves 8:30 a.m. · 1 h 15 min trip
nonstop
found 6 days ago
Found recently, and the cheapest we hold
$61 20 Jan 2027found todayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 43 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $62 to $210.
At $61, the cheapest one-way found recently is below that range.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 4 departure dates from 20 Nov to 20 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 20 Jan 2027 to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov | $194 | Frontier Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT) | 1 stop | found 3 days ago | Open this trip |
| 25 Nov | $123 | Frontier Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT) | 1 stop | found yesterday | Open this trip |
| 16 Dec | $81 | Southwest Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT) | nonstop | found 6 days ago | Open this trip |
| 20 Jan 2027 | $61 | Southwest Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ontario International Airport (ONT) | stops unknown | found today | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $61.
Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines.
Premium cabin fares from San Jose to Ontario
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 24 Dec – 15 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 20 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Jose to Ontario?
Return
Fares 30 to 59 days before departure were typically 32% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (50 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $186 | $136 | +48% | 35 |
| 30–59 days | $126 | $92 | Cheapest seen | 38 |
| 60–89 days | $139 | $139 | +10% | 8 |
| 90–179 days | $569 | $569 | +352% | 8 |
One-way
Fares 30 to 59 days before departure were typically 61% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 12 Nov (43 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $207 | $175 | +156% | 8 |
| 7–13 days | $188 | $123 | +132% | 10 |
| 14–29 days | $107 | $62 | +32% | 18 |
| 30–59 days | $81 | $62 | Cheapest seen | 17 |
| 60–89 days | $92 | $91 | +14% | 22 |
| 180+ days | $227 | $226 | +180% | 10 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Jose → Los Angeles
56 km from Ontario
$87
$76 less than flying to Ontario
18 Jan 2027 – 26 Jan 2027 · SJC → LAX · out nonstop, back nonstop
found 11 hours ago
San Francisco → Ontario
67 km from San Jose
$195
$32 more than flying from San Jose
20 Nov – 22 Nov · SFO → ONT · out nonstop, back nonstop
found 21 hours ago
Oakland → Ontario
61 km from San Jose
$350
$187 more than flying from San Jose
25 Nov – 29 Nov · OAK → ONT · out 1 stop, back nonstop
found yesterday
San Jose → Palm Springs
104 km from Ontario
$679
$516 more than flying to Ontario
9 Apr 2027 – 12 Apr 2027 · SJC → PSP · out 1 stop, back nonstop
found today
San Jose → Long Beach
60 km from Ontario
$207
$44 more than flying to Ontario
14 Jan 2027 – 1 Feb 2027 · SJC → LGB · out nonstop, back nonstop
found 2 days ago
Sacramento → Ontario
142 km from San Jose
$390
$227 more than flying from San Jose
31 Mar 2027 – 3 Apr 2027 · SMF → ONT · out 1 stop, back 1 stop
found 3 days ago
Stockton → Ontario
85 km from San Jose
$346
$183 more than flying from San Jose
19 Nov – 22 Nov · SCK → ONT · out 1 stop, back 1 stop
found 6 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Jose → Los Angeles
56 km from Ontario
$19
$42 less than flying to Ontario
30 Dec · SJC → LAX · nonstop
found yesterday
San Francisco → Ontario
67 km from San Jose
$23
$38 less than flying from San Jose
5 Dec · SFO → ONT · stops unknown
found today
Oakland → Ontario
61 km from San Jose
$52
$9 less than flying from San Jose
5 Dec · OAK → ONT · 1 stop
found yesterday
Stockton → Ontario
85 km from San Jose
$109
$48 more than flying from San Jose
23 Nov · SCK → ONT · 1 stop
found today
Sacramento → Ontario
142 km from San Jose
$147
$86 more than flying from San Jose
17 Nov · SMF → ONT · 1 stop
found 6 days ago
San Jose → Palm Springs
104 km from Ontario
$254
$193 more than flying to Ontario
9 Apr 2027 · SJC → PSP · 1 stop
found today
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 24 Dec – 15 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from San Jose to Ontario?
The cheapest return found recently is $163 with Southwest Airlines, 24 Dec to 15 Jan 2027, found 5 days ago.
How much is a one-way flight from San Jose to Ontario?
The cheapest one-way found recently is $61 with Southwest Airlines, 20 Jan 2027, found today. The cheapest one-way fare on each of 4 departure dates is usually $76 to $141.
What is the cheapest month to fly from San Jose to Ontario?
January 2027 is the cheapest month for a one-way, from $61, 20 Jan 2027, found today.
How far ahead should I book a flight from San Jose to Ontario?
In 50 days of prices between 24 Sept and 12 Nov, return fares 30 to 59 days before departure were typically 32% lower than 14 to 29 days before departure. In 43 days of prices between 24 Sept and 12 Nov, one-way fares 30 to 59 days before departure were typically 61% lower than 0 to 6 days before departure.
Is there a direct flight from San Jose to Ontario?
Yes, the cheapest nonstop return found recently is $163 with Southwest Airlines, 24 Dec to 15 Jan 2027, found 5 days ago. The cheapest nonstop one-way found recently is $81 with Southwest Airlines, 16 Dec, found 6 days ago.
How long is the flight from San Jose to Ontario?
The cheapest nonstop one-way found recently, with Southwest Airlines on 16 Dec, takes 1 h 15 min from Norman Y. Mineta San Jose International Airport (SJC) to Ontario International Airport (ONT).
Which airlines have the cheapest flights from San Jose to Ontario?
Between 20 Nov and 20 Jan 2027, Frontier Airlines has the cheapest one-way on 2 of the 4 departure dates we hold, and Southwest Airlines on 2.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work