Cheapest€112.24
- Frontier Airlines FA726610:402h 10m12:50Portland PDXOntario ONT
Door to door 5h 20mCO2 340.5 kgChanges 0Fixed, no changes
Portland to Ontario flight
Flights from Portland to Ontario start at €134.66 and take 5h 20m at their fastest.
Check dates and fares
Fares and seats move by the day. Price Portland to Ontario on the date you actually want, rather than on the date this page was built.
The Flights from Portland to Ontario starts at €134.66 and takes 5h 20m door to door, run by 4 operators over 1,384 km, with around 20 departures a day. Fares bottom out about 30 days before departure.
- 5h 20mDoor to door
- 2h 10mMoving
- €134.66 to €270.36From
- 06:27 to 18:53First and last departure
- 20Per day
- 340.5 kgCO2
First and last are taken from the services we sell on September 29, 2026. The return direction keeps its own timetable and is not these times reversed.
€134.66 to €270.36 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €232.01Tue15
- about €227.29Wed16
- about €270.36Thu17
- about €206.05Fri18
- about €213.13Sat19
- about €196.02Sun20
- about €178.32Mon21
- about €134.66Tue22
- about €142.92Wed23
- about €187.17Thu24
- about €165.93Fri25
- about €169.47Sat26
- about €161.21Sun27
- about €142.92Mon28
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on September 29, 2026
Lowest CO2€142.91
- Alaska Airlines AA527507:302h 13m09:43Portland PDXLos Angeles LAX
- Amtrak California AC967610:3733m11:10Los Angeles Union StationEast Ontario
Changes at Los Angeles, with 54 minutes between services and a walk of about 14 minutes.
Door to door 5h 37mCO2 339.1 kgChanges 1Fixed, no changes
Airlines
| Operator | From |
|---|---|
 Alaska Airlines | €114.60 |
 Frontier Airlines | €112.24 |
 Horizon Air | €115.19 |
 Bahamasair | €122.86 |
The flight gets you into Ontario. It does not get you a bed, and neither do we.
A room in Ontario for the night the flight gets in
Sort by distance from East Ontario and you can see which places are ten minutes on foot and which are not.
Search Ontario on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Portland to Ontario
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €127.5890 days
- €108.1160 days
- €124.6345 days
- €98.6730 days
- €112.8321 days
- €142.9214 days
- €178.327 days
- €270.363 days
- €232.011 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €98.67.
- How much it moves
- The gap between the cheapest and most expensive lead time is 174 percent. The most expensive point is €270.36, 3 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €161.21Sun
- €142.92Mon
- €134.66Tue
- €142.92Wed
- €187.17Thu
- €165.93Fri
- €169.47Sat
Where you leave from and where you arrive
Portland
Air
- PDX
Ontario
Air
- ONT
What the journey actually looks like
- Direct or connecting
- 80% of the services we sell on this corridor run through without a change. The remaining 20% involve one connection.
- How far it really runs
- The route covers 1,384 km against 1,344 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Los Angeles, Sacramento, Santa Ana, Fresno. The gap between arriving and leaving is 54 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 17 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Portland at 06:27 and the last at 18:53, across 20 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Portland to Ontario
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Portland to Ontario take?
The Flight from Portland to Ontario takes 5h 20m door to door, of which 2h 10m is spent moving. The route runs 1,384 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Portland to Ontario cost?
The Flight from Portland to Ontario starts at €134.66 for one passenger, as of September 14, 2026. A typical fare is €141.45. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Portland to Ontario?
4 operators run the Flight from Portland to Ontario: Alaska Airlines, Frontier Airlines, Horizon Air, Bahamasair. Between them they file around 20 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Portland to Ontario use?
The Flight from Portland to Ontario leaves from Portland PDX and arrives at Ontario ONT. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Portland to Ontario?
Fares for the Flight from Portland to Ontario bottom out around 30 days ahead, at €98.67. The gap between the cheapest and most expensive lead time across the window is 174 percent, measured on September 14, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Portland to Ontario produce?
The Flight from Portland to Ontario produces about 340.5 kg of CO2 per passenger over 1384 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Portland to Ontario on September 14, 2026: 1384 km of route against 1344 km in a straight line, 20 services a day, 4 operators a cheapest fare of €134.66, and 5h 20m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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