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316 € Cheap Flights from Syracuse to Ontario International

Compare Syracuse to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Syracuse to Ontario International

Looking for a cheap last-minute deal or the best return flight from Syracuse Airport to Ontario International Airport? If you want to travel next month, return fares start from 340 €. Find the lowest prices on one-way and return tickets right here.
Ontario.316 € per passenger.Departing Sat, 12 Sep, returning Sat, 19 Sep.Return flight with United.Outbound indirect flight with United, departs from Syracuse on Sat, 12 Sep, arriving in Ontario International.Inbound indirect flight with United, departs from Ontario International on Sat, 19 Sep, arriving in Syracuse.Price includes taxes and charges.From 316 €, select.
Ontario.340 € per passenger.Departing Tue, 18 Aug, returning Mon, 24 Aug.Return flight with jetBlue and Frontier Airlines.Outbound indirect flight with jetBlue, departs from Syracuse on Tue, 18 Aug, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 24 Aug, arriving in Syracuse.Price includes taxes and charges.From 340 €, select.
Ontario.424 € per passenger.Departing Mon, 16 Nov, returning Wed, 18 Nov.Return flight with Breeze Airways and Frontier Airlines.Outbound indirect flight with Breeze Airways, departs from Syracuse on Mon, 16 Nov, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 18 Nov, arriving in Syracuse.Price includes taxes and charges.From 424 €, select.
Ontario.427 € per passenger.Departing Mon, 19 Oct, returning Wed, 21 Oct.Return flight with jetBlue and Frontier Airlines.Outbound indirect flight with jetBlue, departs from Syracuse on Mon, 19 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 21 Oct, arriving in Syracuse.Price includes taxes and charges.From 427 €, select.
Ontario.442 € per passenger.Departing Sat, 25 Jul, returning Sat, 1 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Sat, 25 Jul, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Sat, 1 Aug, arriving in Syracuse.Price includes taxes and charges.From 442 €, select.
Ontario.535 € per passenger.Departing Mon, 30 Nov, returning Wed, 2 Dec.Return flight with Breeze Airways and Frontier Airlines.Outbound indirect flight with Breeze Airways, departs from Syracuse on Mon, 30 Nov, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 2 Dec, arriving in Syracuse.Price includes taxes and charges.From 535 €, select.
Ontario.601 € per passenger.Departing Mon, 14 Dec, returning Wed, 16 Dec.Return flight with jetBlue and Frontier Airlines.Outbound indirect flight with jetBlue, departs from Syracuse on Mon, 14 Dec, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 16 Dec, arriving in Syracuse.Price includes taxes and charges.From 601 €, select.
Ontario.628 € per passenger.Departing Mon, 27 Jul, returning Wed, 29 Jul.Return flight with Breeze Airways and Frontier Airlines.Outbound indirect flight with Breeze Airways, departs from Syracuse on Mon, 27 Jul, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 29 Jul, arriving in Syracuse.Price includes taxes and charges.From 628 €, select.
Ontario.653 € per passenger.Departing Mon, 3 May, returning Wed, 5 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Mon, 3 May, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 5 May, arriving in Syracuse.Price includes taxes and charges.From 653 €, select.
Ontario.653 € per passenger.Departing Mon, 11 Jan, returning Wed, 13 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Mon, 11 Jan, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 13 Jan, arriving in Syracuse.Price includes taxes and charges.From 653 €, select.
Ontario.653 € per passenger.Departing Mon, 8 Mar, returning Wed, 10 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Mon, 8 Mar, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 10 Mar, arriving in Syracuse.Price includes taxes and charges.From 653 €, select.
Ontario.653 € per passenger.Departing Mon, 8 Feb, returning Wed, 10 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Mon, 8 Feb, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 10 Feb, arriving in Syracuse.Price includes taxes and charges.From 653 €, select.
Ontario.653 € per passenger.Departing Mon, 5 Apr, returning Wed, 7 Apr.Return flight with United.Outbound indirect flight with United, departs from Syracuse on Mon, 5 Apr, arriving in Ontario International.Inbound indirect flight with United, departs from Ontario International on Wed, 7 Apr, arriving in Syracuse.Price includes taxes and charges.From 653 €, select.
Ontario.657 € per passenger.Departing Mon, 31 May, returning Wed, 2 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Syracuse on Mon, 31 May, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 2 Jun, arriving in Syracuse.Price includes taxes and charges.From 657 €, select.

Find the cheapest month to fly from Syracuse to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Syracuse to Ontario International flights are currently cheapest in September.
Jul
from 628 €
Aug
from 340 €
Sep
from 316 €
Oct
from 427 €
Nov
from 424 €
Dec
from 601 €
Jan
from 653 €
Feb
from 653 €
Mar
from 653 €
Apr
from 653 €
May
from 653 €
Jun
Find prices

Syracuse to Ontario International: Alternative routes

Compare routes from Syracuse to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Ontario International

4km from central Ontario
Closest
from 316 €
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San Bernardino Norton AFB

39km from central Ontario
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Santa Ana John Wayne

48km from central Ontario
from 323 €
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Long Beach Municipal

54km from central Ontario
from 1.003 €
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Hawthorne

65km from central Ontario
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Burbank

67km from central Ontario
from 331 €
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Los Angeles International

71km from central Ontario
Cheapest
from 225 €
Search flights

Syracuse to Ontario: Flight information

The things to know before you go.
Cheapest flight found316 €
Cheapest month to flySeptember

Finding cheap flights from Syracuse to Ontario International: Frequently asked questions

The best price we found for a return flight from Syracuse to Ontario International is 316 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Syracuse to Ontario International. But we found flights with one or more stops from 316 €.
As of July 2026, there are no flights flying from Syracuse to Ontario International.
The cheapest month to fly from Syracuse to Ontario International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Syracuse Airport to Ontario International Airport on Saturday, 12 September 2026.
No airlines currently offer direct flights between Syracuse Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to Ontario International.

Travelling from Syracuse Airport (SYR) to Ontario International Airport (ONT): what you need to know

  • The timezone in Ontario is UTC-8, which is three hours behind Syracuse.

  • To ensure you catch your SYR to ONT flight, leave plenty of time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

  • Flying during a peak month like August? School holidays and other popular seasons can lead to longer queues and delays at security. Play things extra safe and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • We make it a breeze to book a flight with a stopover. To see all your options for tickets from Syracuse Airport to Ontario International Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to explore the city of your choice. Stopovers between SYR and ONT include:

    • Atlanta Hartsfield-Jackson Airport

    • Denver International Airport

    • Nashville Airport

How to find the cheapest flights from Syracuse Airport (SYR) to Ontario International Airport (ONT)

  • Currently, 258 € is the lowest price we've seen for a one-way Syracuse Airport to Ontario International Airport flight. The best price for a return ticket is 316 €. Keep in mind that fares can change due to demand at the time of booking.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from SYR to ONT if you book ahead. Airlines often have some excellent early bird discounts.

  • The 'Whole month' search function shows you the cheapest flights from Syracuse Airport to Ontario International Airport across the month. It's an easy way to snap up a bargain if your travel dates aren't set in stone.

  • Never miss a deal on cheap flights from SYR to ONT by creating a Price Alert. We'll send you an email or notification through the app when a lower fare becomes available.

  • Lock in the perfect flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Syracuse Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Syracuse Airport (SYR)

  • You'll find SYR at City Hall.

  • When it comes to the on-time performance of Syracuse Airport, 71% of flights meet their scheduled arrival time.

  • Central Syracuse to Syracuse Airport is around 11 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're catching a taxi, ride-sharing or driving.

  • Expect a trip time of about 35 minutes when using public transport.

  • Booked an early flight from Syracuse Airport to Ontario International Airport? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by picking one of these hotels close to SYR:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The address for ONT is 2900 E. Airport Drive.

  • Ontario International Airport is roughly 10 kilometres from the centre of Ontario. The drive time takes around 15 minutes.

  • It takes roughly 45 minutes if you're using public transport.

When to fly to Ontario International Airport (ONT)

  • It's time to work out your trip dates for your flight from Syracuse Airport to Ontario International Airport. July is the most popular month to head to Ontario. If you'd like a quieter vibe, go in March.

  • Before locking in your flight from Syracuse Airport to Ontario International Airport, consider the type of weather you like. August is the warmest month in Ontario, with the temperature ranging from 16ºC (61ºF) to 36ºC (97ºF).

  • February has average temperatures of between 4ºC (39ºF) and 24ºC (75ºF). Search for cheap tickets from SYR to ONT sometime around then if you'd rather travel in cooler conditions.

Explore more of the United States

  • Los Angeles is just one of the many places in the United States waiting to be explored once you've taken in the sights of Ontario. Around 56 kilometres away to the west, top sights here include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • San Diego is another standout destination in the United States and is around 153 kilometres south of Ontario. No trip is complete without a visit to San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

Plan the rest of your trip from Syracuse to Ontario

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.