Cheap flights from St. Louis to Portland (STL - PWM) from $221

Users have found that flying from St. Louis to Portland, Maine on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

Users have found that booking a flight from St. Louis to Portland, Maine at least 39 days early can save you up to 32% on average compared to booking a flight this week. If booking 39 days before your flight isn’t an option for you, users have found flights from St. Louis to Portland, Maine for as little as $598 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $629 for flights departing within the next 3 days.

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Portland, Maine. Flights to Portland, Maine from St. Louis in February are about $463 on average during February, but can be found for as low as $213.

When flying from St. Louis to Portland, Maine, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 7% versus a flight at noon.

American Airlines, Delta, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Yes, there are multiple flights from St. Louis to Portland, Maine for under $400. The cheapest flight booked recently is on Delta for just $383, but on average you can expect to pay $435.

There are currently 14+ open flights from St. Louis to Portland, Maine within the next 7 days for less than $600.

According to our current data, Delta ($383), United Airlines ($386), and American Airlines ($391) offers the cheapest pricing from St. Louis to Portland, Maine. These flights start at 17% lower than the current average price 3 months from now.

$221 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $248 and $937, respectively.

Before booking your flight from St. Louis to Portland, Maine check out the most popular airlines for this route: American Airlines, JetBlue or Delta.

Lambert-St Louis Airport is STL and Portland Airport is PWM. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.