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Ontario Portland - Cheap flights

Special flight deals from Ontario to Portland

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Find the best time to book cheap flights to Portland

Flexible on travel dates? Discover the cheapest month to fly to Portland

  • Cheapest round-trip flight

    from 217 USD

  • Cheapest month to travel

    October

  • The cheapest day to fly

    Thursday

  • Lowest prices

    6 months before
Sep
373 USD
Oct
217 USD
Nov
263 USD
Dec
340 USD
Jan
255 USD
Feb
??
Mar
??
Apr
??
May
??
Jun
??
Jul
??
Aug
??

When is the best time to buy flight tickets?

Find out how far in advance it's worth booking round-trip flights.

  • 6 months before

    from

    371 USD

  • 3 months before

    from

    397 USD

  • 30 days before

    from

    405 USD

  • 7 days before

    from

    387 USD

  • 1 day before

    from

    429 USD

Discover the cheapest day to fly

Discover on which day of the week flights are usually the most affordable.
307 USD
Mon
280 USD
Tue
433 USD
Wed
275 USD
Thu
417 USD
Fri
311 USD
Sat
778 USD
Sun

General information

  • Local time (UTC-8)

  • Flight time from Ontario

  • Local currency

    USD