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Cheap Flights from St Louis to Portland, ME, United States - STL to PWM

Popular flights from St Louis to Portland

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Aug 7, 2016 Aug 10, 2016 $440
American Airlines
Departure Date Return Date Lowest Price
May 19, 2016 May 28, 2016 $358
United Airlines
Departure Date Return Date Lowest Price
Aug 31, 2016 Sep 4, 2016 $356

How Much Does it Cost to Fly from St Louis to Portland (STL to PWM)?

We have collected flight cost data from across the web for travel from St Louis to Portland, and have found the average flight price for this trip to be $460.

When Can I Buy the Cheapest Flight from St Louis to Portland (STL to PWM)?

Airlines can adjust prices for plane tickets from St Louis to Portland based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Cheapest Day To Fly from St Louis to Portland

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Portland.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$589 $390 $440 $358 $599 $432 $418

TIPSave $131 by flying into Boston instead of Portland from St Louis

Round Trip vs One Way Flights from St Louis to Portland (STL to PWM)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Portland. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Portland is $208.

The average price for round trip flights from St Louis to Portland is $502.

St Louis to Portland Flight Questions

Below are some common questions that asked about this flight route:

Question: What are the most popular connecting cities when flying from St Louis to Portland?
Answer: Atlanta, GA

Airlines Flying from St Louis to Portland (STL to PWM)

Below are the different airlines that fly from St Louis to Portland with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Portland.

St Louis to Portland
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American DCA X X X X X X X
Delta ATL X X X X X X X
Delta MSP / DTW X X X X X X X
United EWR X X X X X X X
Southwest BWI X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Portland, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Boston American, Alaska, United $316
St Louis to New York American, Alaska, United $252
St Louis to Manchester American, United $327
St Louis to Chicago American, Alaska, United $213
St Louis to Atlanta American, Alaska, Frontier, United $88
St Louis to Newark American, Alaska, JetBlue, United $253
St Louis to Hartford American, Alaska, United $270
St Louis to Bangor American, Alaska, United $409
St Louis to Providence American, Alaska, United $358
St Louis to Washington American, Alaska, United $203
St Louis to Philadelphia American, Alaska, United $325
St Louis to AugustaCheck Dates
St Louis to Baltimore American, Alaska, United $273
St Louis to Burlington American, Alaska, United $431
St Louis to Dallas - Ft Worth American, Alaska, United $201
St Louis to Albany American, Alaska, United $346
St Louis to Charlotte American, Alaska, United $320
St Louis to Detroit American, Alaska, United $232
St Louis to Long Island MacArthur American, Alaska, United $573
St Louis to Orlando American, Alaska, JetBlue, Frontier, United $128

Cheap International Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Montreal Air Choice One, American, Air Canada, Alaska, United, WestJet $303
St Louis to Toronto Air Choice One, American, Air Canada, Alaska, Frontier, United, WestJet $354

Cheap Domestic Flights to Portland - PWM

FlightsAirlineLowest Price
Springfield to Boston American, Alaska, United $416
Moline to Boston American, United $241
Peoria to Boston American, United $244
Bloomington - Normal to Boston American $244
Evansville to New York American, United $354
Springfield to New York American, United $401
Springfield to Chicago American, United $287
Springfield to Bangor American, United $502
Cheap Flights from St Louis to Portland, ME, United States, from $356 Round trip from STL to PWM