Cheap flights to Riverside

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Travelers and bags, 1 Adult, Economy

Compare Riverside flights across hundreds of providers

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Flight deals to Riverside

Looking for a cheap last-minute deal or the best roundtrip flight to Riverside? Find our lowest prices on one-way and roundtrip tickets to the most convenient airport right here.

Ontario.$41 per passenger.Departing Tue, Sep 29, returning Tue, Oct 6.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Denver International on Tue, Sep 29, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Tue, Oct 6, arriving in Denver International.Price includes taxes and charges.From $41, select.

Ontario.$41 per passenger.Departing Thu, Sep 24, returning Mon, Sep 28.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Denver International on Thu, Sep 24, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Mon, Sep 28, arriving in Denver International.Price includes taxes and charges.From $41, select.

Ontario.$45 per passenger.Departing Mon, Nov 2, returning Thu, Nov 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Mon, Nov 2, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Thu, Nov 5, arriving in San Francisco International.Price includes taxes and charges.From $45, select.

Ontario.$45 per passenger.Departing Thu, Oct 15, returning Thu, Nov 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Thu, Oct 15, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Thu, Nov 5, arriving in San Francisco International.Price includes taxes and charges.From $45, select.

Ontario.$45 per passenger.Departing Thu, Oct 1, returning Mon, Oct 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Denver International on Thu, Oct 1, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Mon, Oct 5, arriving in Denver International.Price includes taxes and charges.From $45, select.

Ontario.$83 per passenger.Departing Tue, Sep 8, returning Thu, Nov 12.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Tue, Sep 8, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Thu, Nov 12, arriving in San Francisco International.Price includes taxes and charges.From $83, select.

Ontario.$85 per passenger.Departing Thu, Dec 3, returning Thu, Dec 10.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Thu, Dec 3, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Thu, Dec 10, arriving in San Francisco International.Price includes taxes and charges.From $85, select.

Ontario.$104 per passenger.Departing Wed, Aug 26, returning Tue, Sep 1.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Wed, Aug 26, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Tue, Sep 1, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $104, select.

Ontario.$114 per passenger.Departing Sun, Aug 30, returning Sun, Aug 30.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Harry Reid on Sun, Aug 30, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Sun, Aug 30, arriving in Harry Reid.Price includes taxes and charges.From $114, select.

Ontario.$117 per passenger.Departing Thu, Jan 21, returning Wed, Feb 3.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Phoenix Sky Harbor on Thu, Jan 21, arriving in Ontario International.Inbound direct flight with Southwest Airlines departing from Ontario International on Wed, Feb 3, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $117, select.

Ontario.$117 per passenger.Departing Wed, Dec 30, returning Wed, Jan 6.Round-trip flight with United.Outbound direct flight with United departing from San Francisco International on Wed, Dec 30, arriving in Ontario International.Inbound direct flight with United departing from Ontario International on Wed, Jan 6, arriving in San Francisco International.Price includes taxes and charges.From $117, select.

Ontario.$117 per passenger.Departing Thu, Nov 26, returning Thu, Dec 3.Round-trip flight with United.Outbound direct flight with United departing from San Francisco International on Thu, Nov 26, arriving in Ontario International.Inbound direct flight with United departing from Ontario International on Thu, Dec 3, arriving in San Francisco International.Price includes taxes and charges.From $117, select.

Ontario.$117 per passenger.Departing Mon, Oct 5, returning Wed, Jan 13.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Phoenix Sky Harbor on Mon, Oct 5, arriving in Ontario International.Inbound direct flight with Southwest Airlines departing from Ontario International on Wed, Jan 13, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $117, select.

Ontario.$137 per passenger.Departing Wed, Feb 3, returning Sat, Feb 6.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Phoenix Sky Harbor on Wed, Feb 3, arriving in Ontario International.Inbound direct flight with Southwest Airlines departing from Ontario International on Sat, Feb 6, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $137, select.

Ontario.$151 per passenger.Departing Fri, Jan 1, returning Fri, Jan 8.Round-trip flight with United.Outbound direct flight with United departing from San Francisco International on Fri, Jan 1, arriving in Ontario International.Inbound direct flight with United departing from Ontario International on Fri, Jan 8, arriving in San Francisco International.Price includes taxes and charges.From $151, select.

Ontario.$151 per passenger.Departing Wed, Nov 18, returning Mon, Jan 11.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Phoenix Sky Harbor on Wed, Nov 18, arriving in Ontario International.Inbound direct flight with Southwest Airlines departing from Ontario International on Mon, Jan 11, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $151, select.

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Flying to Riverside

The things to know before you go.

Fly into	Ontario International Airport
Distance to Riverside	14.1 miles
Average flight time	2 hrs, 56 mins
Most popular airline	Southwest Airlines
Cheapest flight found	$41
Cheapest month to fly	September

Find the cheapest time to fly to Riverside

Flexible on travel dates? Find the cheapest month – or even day – to catch a flight to Riverside.

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How to find cheap flights to Riverside with Skyscanner

Looking for cheap plane tickets to Riverside? Here are a few tips on how to find the best price.

Just hit "search."

We've compared every online travel agent and flight provider out there to find the cheapest flight tickets to Riverside.

Compare flights to Riverside from over 1,000 providers.

Then choose the cheapest plane tickets or fastest journeys. Flight tickets to Riverside start from $20 one-way.

Fly from Denver International Airport.

At the moment, the best route is from Denver International Airport to Ontario International Airport, for $6.

Include nearby airports in your search.

Widen your search for the cheapest flights to Riverside by selecting the Add nearby airports option when you search. This will allow you to see flight prices for all the airports you could fly from, and ones near Riverside. It could save you heaps of cash!

Fly in September.

The cheapest time to go to Riverside is currently September.

Flex your dates for the best rates.

If you’re flexible on departure dates, use our whole month tool to find the cheapest month, or even day, to fly to Riverside.

Look for direct flights.

Only interested in direct flights to Riverside? Make sure to tick "Direct flights only" when performing a search. If there are direct Riverside flights available, these will appear in the results.

Set up a Price Alert

We'll let you know when the price of flights to airports serving Riverside go up or down, so you can book when the time is just right.

Find flights on the fly with the Skyscanner app.

To get the best flight booking experience when out and about, download the Skyscanner app and search for plane tickets to Riverside whenever you want.

Frequently asked questions

How many airports are there near Riverside?

There are three (3) airports near Riverside: Ontario International Airport, San Bernardino Norton AFB Airport, and Santa Ana John Wayne Airport.

Which airlines offer direct flights to Riverside?

Southwest Airlines, American Airlines, Alaska Airlines, Qatar Airways, United, Delta, British Airways, and KLM all offer direct flights to Ontario International Airport.

How can I find the best flight deal to Riverside?

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 Riverside 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.

Can I get a direct flight to Riverside?

Yes – you can fly direct to Ontario International Airport or San Bernardino Norton AFB Airport, and the average flight time is 2 hours and 49 minutes.

How much are round-trip flights to Riverside?

The best price we found for a roundtrip flight to Riverside is $41. This is an estimate based on information collected from different airlines and travel providers flying to Ontario International Airport over the last four (4) days and is subject to change and availability.

What's the cheapest airport in Riverside?

The cheapest airport near Riverside is Ontario International – which is 14.1 miles away from the center of Riverside. We've found flights to this airport from $41.

Which upcoming date is cheapest to fly to Riverside on?

After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Ontario International Airport, the closest airport to Riverside, is Tuesday, September 29, 2026.

When is the best time to book flights to Riverside?

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

Which airport should I fly to to get to Riverside?

Ontario International Airport is 14.1 miles from Riverside, San Bernardino Norton AFB Airport is 14.6 miles from Riverside, and Santa Ana John Wayne Airport is 33.2 miles from Riverside.

What’s the weather like in Riverside?

The average temperature in Riverside in August is around 79°F. The warmest month in Riverside is typically August, which averages 92°F. The coolest month is December, with temperatures averaging 40°F. The rainiest month is February, and it usually rains the least in June.

Which is the cheapest airline to fly with to Riverside?

Currently, the cheapest airline that flies to Ontario International Airport – the closest airport to Riverside – is Frontier Airlines.

How do I get from Ontario International Airport to Riverside?

Ontario International Airport is 14.1 miles from Riverside which is approximately 33 minutes driving time. Check out the options for car rental at Ontario International Airport.

How do I get from San Bernardino Norton AFB Airport to Riverside?

San Bernardino Norton AFB Airport is 14.6 miles from Riverside which is approximately 28 minutes driving time. Check out the options for car rental at San Bernardino Norton AFB Airport.

How do I get from Santa Ana John Wayne Airport to Riverside?

Santa Ana John Wayne Airport is 33.2 miles from Riverside which is approximately 47 minutes driving time. Check out the options for car rental at Santa Ana John Wayne Airport.