Cheap flights from the United States to Portland from $100

The cheapest month to fly to Portland from United States is in January. Flight prices, which tend to average around $305, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until February to fly from United States, when ticket prices are also cheap, with an average price of $312.

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as $413. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Monday, with ticket prices averaging around $509.

The cheapest time of day to fly to Portland is in the morning when flights can be purchased for as low as $433. In the evening is when there is more demand to fly to Portland, so prices are often more expensive at around $513 per ticket.

Fly from San Francisco to Portland for the best United States - Portland flight prices

You are more likely to see cheaper flights to Portland from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $435 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from United States for as low as $247 on momondo.

There are 4 cabin classes available to choose from on United States to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, United Airlines, and Frontier are the most popular carriers operating from United States to Portland

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Portland from United States according to our data. Alaska Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 10 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between United States and Portland have experienced a delay on any given week. The average delay length over the past 12 months has been 133 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

The number of flights available between United States and Portland is 110 per day as of September 2026. The most frequent departure time is 9:00PM, with 34% of daily flights leaving in the afternoon.

776 flights are operational weekly from United States to Portland as of September 2026. The most popular departure day for this route is Tue, with 20% of flights per week taking off on this day.