Currently, the most affordable month to book a Frontier flight from Denver to Portland in January, with an average price of $276. Conversely, traveling with Frontier from Denver to Portland in July will be the most expensive, with an average cost of $402. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$276
February
$306
March
$336
April
$303
May
$329
June
$377
July
$402
August
$344
September
$296
October
$276
November
$298
December
$292
PDX Temperature | 41 - 69.8 °F |
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If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).
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