Cheap Flights from Medford OR to Ontario International CA from $262

Compare Medford 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 Medford to Ontario International

Looking for a cheap last-minute deal or the best round-trip flight from Medford to Ontario International? Find the lowest prices on one-way and round-trip tickets right here.

Ontario.$262 per passenger.Departing Thu, Oct 16, returning Mon, Oct 20.Round-trip flight with United.Outbound indirect flight with United, departing from Medford on Thu, Oct 16, arriving in Ontario International.Inbound indirect flight with United, departing from Ontario International on Mon, Oct 20, arriving in Medford.Price includes taxes and charges.From $262, select.

Ontario.$303 per passenger.Departing Sun, Sep 21, returning Fri, Sep 26.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Medford on Sun, Sep 21, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departing from Ontario International on Fri, Sep 26, arriving in Medford.Price includes taxes and charges.From $303, select.

Ontario.$376 per passenger.Departing Sat, Sep 27, returning Wed, Oct 1.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Medford on Sat, Sep 27, arriving in Ontario International.Inbound indirect flight with Delta, departing from Ontario International on Wed, Oct 1, arriving in Medford.Price includes taxes and charges.From $376, select.

Find the cheapest month to fly from Medford to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Medford to Ontario International flights are currently cheapest in October.

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Medford to Ontario International: Alternative routes

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

Medford to Ontario: Flight information

The things to know before you go.

Cheapest flight found	$262
Cheapest month to fly	October

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

How much are round-trip flights from Medford to Ontario International?

The best price we found for a round-trip flight from Medford to Ontario International is $262. 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.

Which airlines fly direct from Medford to Ontario International?

Currently, there are no airlines that fly direct from Medford to Ontario International. But we found flights with one or more stops from $262.

How many flights are there a week from Medford to Ontario International?

There are no flights flying from Medford to Ontario International, as of September 2025.

When is the cheapest time to fly from Medford to Ontario International?

The cheapest month to fly from Medford to Ontario International is usually October.

Which upcoming date is cheapest to fly from Medford Airport to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Medford Airport to Ontario International Airport on Thursday, October 16, 2025.

Can I get a direct flight from Medford Airport to Ontario International Airport?

No airlines currently offer direct flights between Medford Airport and Ontario International Airport. Most routes have one or more stops.

How can I find the best flight deal to Ontario International?

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.

When is the best time to book flights to Ontario?

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.

Which is the cheapest airline to fly with from Medford Airport to Ontario International?

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

Traveling from Rogue Valley International-Medford Airport (MFR) to Ontario International Airport (ONT): what you need to know

Ontario's timezone is UTC-7, which is the same as Medford.
To ensure you get on your MFR to ONT flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the standard rule.
Be prepared for longer lines in popular months like October. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a wise move.
Consider adding a stopover when booking your ticket from Rogue Valley International-Medford Airport to Ontario International Airport. Simply uncheck 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here's where you can stop between MFR and ONT:
- Harry Reid Airport (formerly McCarran Airport)
- Seattle-Tacoma International Airport
- Denver International Airport

How to find the cheapest flights from Rogue Valley International-Medford Airport (MFR) to Ontario International Airport (ONT)

The cheapest price we've seen for a one-way Rogue Valley International-Medford Airport to Ontario International Airport flight is $122. A round-trip plane ticket is currently $262. Depending on the availability and when you book, these fares could change.
Don't wait until the last moment. You're more likely to get cheap tickets from MFR to ONT if you book ahead. Airlines often have some amazing early bird deals.
Finding cheap flights from Rogue Valley International-Medford Airport to Ontario International Airport is easier if you're flexible with your dates. Use the 'Whole month' tool to see the best prices throughout the month and land a great deal.
Save time searching for cheap flights from MFR to ONT by creating a Price Alert. You'll receive an email or notification on the app when a new low fare is offered.
Tailor your trip using filters. Choose your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Rogue Valley International-Medford Airport to Ontario International Airport.

Handy information about Rogue Valley International-Medford Airport (MFR)

The address for MFR is 1000 Terminal Spur Rd..
When it comes to Rogue Valley International-Medford Airport's on-time performance, 78.68% of flights complete their journey on time.
Rogue Valley International-Medford Airport is about 5 kilometers from central Medford. If you're driving, ride-sharing or catching a cab from the center, it'll take you 10 minutes or so to get there, depending on the traffic.
Planning to catch public transport? Expect a journey time of around 15 minutes.
Looking for a handy hotel near MFR? If you've booked an early flight from Rogue Valley International-Medford Airport to Ontario International Airport, these accommodation options will put you moments from your departure gate:

Arriving at Ontario International Airport (ONT)

If you're coming in on a late Rogue Valley International-Medford Airport to Ontario International Airport flight, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be tucked up in bed not long after at one of these options near ONT:
Grab an Ontario International Airport rental car and explore Ontario and beyond with your own wheels. Dollar, Fox - Rent A Car and Thrifty are popular outlets to choose from here.
Secure the lowest price by booking your vehicle from Ontario International Airport around three weeks before your travel date.

Getting from Ontario International Airport (ONT) to central Ontario

ONT is located at 2900 E. Airport Drive.
Ontario International Airport to the center of Ontario has a drive time of around 10 minutes. It's approximately 6 kilometers away.
It takes roughly 1 hour 30 minutes to get there by public transport.

When to fly to Ontario International Airport (ONT)

The quietest month for a flight from Rogue Valley International-Medford Airport to Ontario International Airport is May, while August is the busiest. Pick the best time to go to Ontario based on whether you prefer a laid-back vibe or a more bustling atmosphere.
When booking your flight from Rogue Valley International-Medford Airport to Ontario International Airport, consider the type of weather you like. August is the warmest month in Ontario, with temperatures ranging from 15ºC (59ºF) to 35ºC (95ºF).
Look for cheap tickets from MFR to ONT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

You've done Ontario, now it's time to discover more of United States. Travel about 56 kilometers west to Los Angeles to tick off its leading sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, you'll have a full itinerary ahead.
If you're eager to discover another major destination in United States, head for San Diego, about 153 kilometers south of Ontario. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are among its highlights.