Cheap flights from Ontario to Portland

Flights overview

Useful information for finding cheap flights from Ontario to Portland and booking your next trip
Cheapest round-trip flights $180
Frontier 1 stop 19 hr Thu, May 28 — Sun, May 31
The cheapest round-trip flight from Ontario to Portland is currently $180
Cheapest one-way flight $90
Frontier 1 stop 6 hr Sat, May 30
The cheapest one-way flight from Ontario to Portland is currently $90
Cheapest nonstop flights $207
Alaska Nonstop 3 hr Sat, May 30 — Sun, May 31
The cheapest nonstop round-trip flight from Ontario to Portland is currently $207
Last-minute weekend getaway $311
Frontier 1 stop 5 hr Thu, May 7 — Sun, May 10
The cheapest last-minute weekend getaway from Ontario to Portland is currently $311
Cheapest business class flights $427
Alaska Nonstop 3 hr Sat, May 30 — Sun, May 31
The cheapest business class round-trip flight from Ontario to Portland is currently $427
Fastest flight 2 hr 15 min The fastest nonstop flight from Ontario to Portland takes 2 hr 15 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Ontario to Portland is typically October. The most expensive month to fly is typically April.
October
Cheapest
Typical prices: $125–195
April
Most expensive
Typical prices: $170–290

Popular airlines from Ontario to Portland

  • Alaska
    Nonstop
    from $207
    Typical price: $185–420
    20 weekly nonstop flights
    ONT - PDX Every day
    241 weekly connecting flights
    ONT - PDX Every day
  • Southwest
    from $227
    Typical price: $180–390
    691 weekly connecting flights
    ONT - PDX Every day
  • Delta
    from $247
    Typical price: $210–490
    185 weekly connecting flights
    ONT - PDX Every day
  • United
    from $227
    Typical price: $200–485
    136 weekly connecting flights
    ONT - PDX Every day
  • American
    from $307
    Typical price: $255–560
    102 weekly connecting flights
    ONT - PDX Every day
  • Frontier
    from $180
    Typical price: $140–335
    25 weekly connecting flights
    ONT - PDX Every day

Popular airports near Ontario

  • Ontario International Airport (ONT)
    Ontario United States 11 min 2 mi
  • Los Angeles International Airport (LAX)
    Los Angeles United States 1 hr 7 min 44 mi
  • Tijuana International Airport (TIJ)
    Tijuana Mexico 2 hr 16 min 112 mi
  • San Diego International Airport (SAN)
    San Diego United States 1 hr 50 min 95 mi

Popular airports near Portland

  • Portland International Airport (PDX)
    Portland United States 20 min 6 mi
  • Seattle-Tacoma International Airport (SEA)
    Seattle United States 2 hr 37 min 134 mi
  • Eugene Airport (EUG)
    Eugene United States 1 hr 54 min 99 mi
  • Redmond Municipal Airport (RDM)
    Redmond United States 3 hr 114 mi

Frequently asked questions about flying from Ontario to Portland

The cheapest flights from Ontario to Portland are usually in October. Typical ticket prices in October range from $125 to $195.
The cheapest round-trip flight from Ontario to Portland recently found on Google Flights was with Frontier from $180. The cheapest one-way flight was with Frontier from $90.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from Ontario to Portland is $207, flying from May 30 to May 31.
  • The cheapest Southwest flight from Ontario to Portland is $227, flying from May 30 to May 31.
  • The cheapest Delta flight from Ontario to Portland is $247, flying from May 30 to May 31.
  • The cheapest United flight from Ontario to Portland is $227, flying from May 30 to May 31.
  • The cheapest American flight from Ontario to Portland is $307, flying from May 29 to Jun 1.
  • The cheapest Frontier flight from Ontario to Portland is $180, flying from May 28 to May 31.
The cheapest round-trip flight from Ontario to Portland starts at $180 from Thu, May 28 to Sun, May 31. The cheapest one-way flight starts at $90 and departs on Sat, May 30.
2 hr 15 min is the shortest flight time from Ontario to Portland.
Most travelers choose to visit in late spring and summer (May–Aug), when the days are mild to warm, and generally dry (especially Jul–Aug). The long-standing Portland Rose Festival (May–Jun) is a several-week event featuring floral parades, carnival rides, waterfront activities and fireworks. In Jul, the Oregon Brewers Festival draws thousands for craft beer tastings, demonstrations and live music along the river. The Waterfront Blues Festival is also held in Jul. Weather Nov–Apr is cool and rainy.
It's easy to use Google Flights to find the cheapest days to fly from Ontario to Portland.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from Ontario to Portland really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Ontario to Portland.

In terms of nonstop flights, Alaska is the most popular. Alaska offers 20 nonstop flights and 241 connecting flights per week. Alaska flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .

In terms of flights, Southwest is the most popular. Southwest offers 691 connecting flights per week. Southwest flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .

Other popular airlines flying from Ontario to Portland are:
  • Delta offers 185 connecting flights per week. Delta flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .
  • United offers 136 connecting flights per week. United flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .
  • American offers 102 connecting flights per week. American flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .
  • Frontier offers 25 connecting flights per week. Frontier flies from Ontario International Airport (ONT) to Portland International Airport (PDX) .
The number of connecting flights refers to distinct flights with at least one stop between Ontario and Portland.
The cheapest round-trip flight from Ontario to Portland recently found on Google Flights was with Frontier from $180. The cheapest one-way flight was with Frontier from $90.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from Ontario to Portland is $207, flying from May 30 to May 31.
  • The cheapest Southwest flight from Ontario to Portland is $227, flying from May 30 to May 31.
  • The cheapest Delta flight from Ontario to Portland is $247, flying from May 30 to May 31.
  • The cheapest United flight from Ontario to Portland is $227, flying from May 30 to May 31.
  • The cheapest American flight from Ontario to Portland is $307, flying from May 29 to Jun 1.
  • The cheapest Frontier flight from Ontario to Portland is $180, flying from May 28 to May 31.
Alaska flies direct from Ontario to Portland.
  • There are 20 Alaska direct flights from Ontario to Portland per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between Ontario and Portland at price $311 is offered by Frontier from Thu, May 7 to Sun, May 10.
Alaska flies direct from Ontario to Portland.
  • There are 20 Alaska direct flights from Ontario to Portland per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from Ontario to Portland on a daily basis.
The cheapest direct (nonstop) round-trip flights between Ontario and Portland start at $207 from Sat, May 30 to Sun, May 31 with Alaska.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Ontario to Portland, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Ontario and Portland start at $427 from Sat, May 30 to Sun, May 31 with Alaska.
The cheapest economy class round-trip flights between Ontario and Portland start at $180 from Thu, May 28 to Sun, May 31.
To book business class trips from Ontario to Portland, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Ontario and Portland starts at $311 from Thu, May 7 to Sun, May 10 with Frontier.
The cheapest last-minute deal between Ontario and Portland at price $311 is offered by Frontier from Thu, May 7 to Sun, May 10.
To find last-minute flight deals from Ontario to Portland, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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