$182 Cheap flight deals from St. Louis (STL) to Casco Bay Islands (PWM)

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Airfares from $182 One Way, $356 Round Trip from St. Louis to Casco Bay Islands

Prices starting at $356 for return flights and $182 for one-way flights to Casco Bay Islands were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 2 - Mon, Dec 7
STL
St. Louis
PWM
Portland
$356 Roundtrip, found 5 days ago
$356
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 2 from St. Louis to Portland, returning Mon, Dec 7, priced at $356 found 5 days ago
Wed, Dec 2 - Mon, Dec 7
STL
St. Louis
PWM
Portland
$363 Roundtrip, found 5 days ago
$363
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Dec 2 from St. Louis to Portland, returning Mon, Dec 7, priced at $363 found 5 days ago
Wed, Dec 2 - Mon, Dec 7
STL
St. Louis
PWM
Portland
$367 Roundtrip, found 5 days ago
$367
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 2 from St. Louis to Portland, returning Mon, Dec 7, priced at $367 found 5 days ago
Wed, Dec 2 - Mon, Dec 7
STL
St. Louis
PWM
Portland
$389 Roundtrip, found 5 days ago
$389
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Dec 2 from St. Louis to Portland, returning Mon, Dec 7, priced at $389 found 5 days ago
Wed, Dec 2 - Mon, Dec 7
STL
St. Louis
PWM
Portland
$392 Roundtrip, found 5 days ago
$392
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 2 from St. Louis to Portland, returning Mon, Dec 7, priced at $392 found 5 days ago

Casco Bay Islands first class flight packages

Price found within the past 48 hours. Click for updated prices.
Portland Harbor Hotel
4.0-star property

Portland Harbor Hotel

9.2/10 Wonderful! (1,851 reviews)

Dec 28 - Jan 4

7 night stay

St. Louis (STL) to Portland (PWM)

American Airlines • Non-stop • FirstClass

Portland (PWM) to St. Louis (STL)

Southwest Airlines • Non-stop • FirstClass
Price was $1,418, price is now $1,192 per person
$1,192
per person
found 1 day ago
There is a $35 per day amenities charge to your room. You can use it for drinks, food at the hotel. But if you don't use it, they still charge you. It's a great hotel, great location. That charge was a surprise to me. They did tell me about it when I was checking in, but I don't remember seeing it while searching for the hotel. But I did love my stay. I'd stay there again.

Reviewed on Nov 9, 2026

Blind Tiger Portland - Danforth Street.
3.5-star property

Blind Tiger Portland - Danforth Street.

9.6/10 Exceptional! (199 reviews)

Dec 28 - Jan 4

7 night stay

St. Louis (STL) to Portland (PWM)

American Airlines • Non-stop • FirstClass

Portland (PWM) to St. Louis (STL)

Southwest Airlines • Non-stop • FirstClass
Price was $3,185, price is now $2,606 per person
$2,606
per person
found 1 day ago

The Docent's Collection at 121 Middle Street
3.5-star property

The Docent's Collection at 121 Middle Street

9.6/10 Exceptional! (419 reviews)

Dec 28 - Jan 4

7 night stay

St. Louis (STL) to Portland (PWM)

American Airlines • Non-stop • FirstClass

Portland (PWM) to St. Louis (STL)

Southwest Airlines • Non-stop • FirstClass
Price was $2,006, price is now $1,725 per person
$1,725
per person
found 1 day ago
Pros: Room was nice and spacious. Kitchen had everything we needed. Location was awesome - very close to all the things we wanted to do. Excellent proximity to some of the best restaurants, including LB Kitchen, Fore Street, Central Provisions. Con’s: Couches could have benefited from some throw pillows - kinda weird without any. Bed wasn’t that comfortable - you sink in way too much. Parking was ok - just some weird communication before our arrival about where to park. Text messages from the hotel leading up to our check in said they had a lot behind the building which we parked in - only to be told during check in that the lot was only for people that booked it (fair) but their messages made it seem like that was available. Then they questioned how we even knew about the lot - which was odd considering we only knew about it because they texted us parking info.

Reviewed on Nov 8, 2026

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More About Flying To Casco Bay Islands from St. Louis

Route Information for Flights from St. Louis to Casco Bay Islands

Origin Airport IATA Code
STL
Destination Airport IATA Code
PWM
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to Casco Bay Islands

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.