Cheap flights from St. Louis to Portland, Maine from $198
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Portland, Maine departing on 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from St. Louis to Portland, Maine
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Portland, Maine?
The cheapest month to fly to Portland, Maine from St. Louis is in November. Flight prices, which tend to average around $351, 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 November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $366.
What is the cheapest day to depart on your flight to Portland, Maine?
On average, the least expensive day to fly to Portland, Maine from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $375. 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 St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $456.
What is the cheapest time of day to depart on your flight to Portland, Maine?
In the evening is the cheapest time of day to fly from St. Louis to Portland, Maine when you can find flight prices for as low as $285. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $436. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Portland, Maine?
You are more likely to see cheaper flights to Portland, Maine from St. Louis when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $411 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from St. Louis for as low as $359 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Portland?
Delta, American Airlines, and United Airlines are the most popular carriers operating from Lambert-St Louis to Portland
What airlines fly to Portland, Maine?
American Airlines, Southwest and Delta are the top three most popular airlines that fly to Portland, Maine from St. Louis according to our data. American Airlines is the first choice among our users, with 73% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 6 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Portland, Maine
Cheap St. Louis to Portland, Maine (STL to PWM) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Portland, Maine
How far is Lambert-St Louis to Portland by plane?
Portland is 1090.4 mi away from Lambert-St Louis. In terms of flight time, this usually takes a little over 4h 17m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Portland Airport?
Prices for flights from Lambert-St Louis Airport to Portland Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Portland Airport?
The number of operators available for flights from Lambert-St Louis Airport to Portland Airport is 5 as of April 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Portland Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Portland, Maine?
Based on momondo bookings for flights between St. Louis and Portland, Maine, the leading airline is American Airlines, making up 68% of the total bookings. Other popular airlines include Delta with 16%, Southwest with 7%, and United Airlines with 6%.
Best airlines flying from St. Louis to Portland, Maine
Compare and see reviews for airlines that fly from St. Louis to Portland, Maine with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $153 | Free Cancellation | Rating 5.9 3,277 reviews | |||
| PriceFrom $286 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $314 | Free Cancellation | Rating 8.0 7,910 reviews | |||
| PriceFrom $316 | Free Cancellation | Rating 8.0 4,279 reviews | |||
| PriceFrom $377 | Free Cancellation | Rating 7.4 8,636 reviews |
Traveling to a place near Portland?
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Why should I use momondo to find a flight deal from St. Louis to Portland?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Portland. momondo saves you time and could save you money on your trip.
Can I find flights from St. Louis to Portland with flexible booking policies on momondo?
All flight searches from St. Louis to Portland on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from St. Louis to Portland?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Portland.
I’m not ready to book a flight from St. Louis to Portland right now. Can momondo alert me if prices change?
Price alerts on flights to Portland from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.