Cheap flights from Baltimore to Boston from $121

The cheapest month to fly to Portland, Maine from Baltimore is in April. Flight prices, which tend to average around $252, 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 January is also cheap. Prices for this month can be found on momondo for an average of $293.

On average, the least expensive day to fly to Portland, Maine from Baltimore is on a Saturday. momondo users have found tickets for Saturday departures for as low as $294. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Baltimore because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $373.

In the evening is the cheapest time of day to fly from Baltimore to Portland, Maine when you can find flight prices for as low as $298. 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 $385. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Baltimore/Washington to Portland for the best Baltimore/Washington - Portland flight prices

You are more likely to see cheaper flights to Portland, Maine from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $386 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Baltimore for as low as $283 on momondo.

There is only 1 cabin class available to choose from on Baltimore/Washington to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Baltimore to Portland, Maine.

As of February 2026, prices for Baltimore to Portland, Maine flights are approximately 30% cheaper when compared to flights at the same time last year.

Southwest and Delta are the most popular carriers operating from Baltimore/Washington to Portland

American Airlines, United Airlines and JetBlue are the top three most popular airlines that fly to Portland, Maine from Baltimore according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 7 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Baltimore to Portland, Maine as of February 2026. The most popular departure time for this route is 9:00AM, with 43% of flights per day taking off in the afternoon.

The number of flights available between Baltimore and Portland, Maine is 18 per week as of February 2026. The most frequent departure day is Thu, with 22% of weekly flights leaving on this day.