Cheap flights from the United States to Boston from $74

The cheapest month to fly to Portland, Maine from United States is in April. Flight prices, which tend to average around $184, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $202.

On average, the least expensive day to fly to Portland, Maine from United States is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $222. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $286.

In the evening is the cheapest time of day to fly from United States to Portland, Maine when you can find flight prices for as low as $211. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $294. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Portland, Maine from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $206 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from United States for as low as $153 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.

United Airlines, Delta, and JetBlue are the most popular carriers operating from United States to Portland

JetBlue, Delta and American Airlines are the top three most popular airlines that fly to Portland, Maine from United States according to our data. JetBlue is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 14 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% 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 130 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.

Tuesday 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, Southwest have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

As of February 2026, there are 40 flights per day flying from United States to Portland, Maine. The most common time of day flights depart is 8:00PM, with 76% of flights taking off in the evening.

As of February 2026, 283 flights take off from United States and land in Portland, Maine each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.