Cheap Flights to Casco Bay Islands

View ฿22,640 flight on Tue, 12 May 2026Opens in a new window

Popular airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • JetBlue Airways

  • Breeze Airways

  • Alaska Airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Casco Bay Islands

Prices were available within the past 7 days and start at ฿22,640 for one-way flights and ฿40,195 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Tue, 28 Apr - Sat, 2 May
BKK
Bangkok
PWM
Portland
฿40,195 Return, found 5 days ago
฿40,195
Return
found 5 days ago
Select Qatar Airways flight, departing Tue, 28 Apr from Bangkok to Portland, returning Sat, 2 May, priced at ฿40,195 found 5 days ago
Japan Airlines
Thu, 21 May - Wed, 9 Sept
BKK
Bangkok
PWM
Portland
฿40,460 Return, found 17 hours ago
฿40,460
Return
found 17 hours ago
Select Japan Airlines flight, departing Thu, 21 May from Bangkok to Portland, returning Wed, 9 Sept, priced at ฿40,460 found 17 hours ago
Gulf Air
Sat, 6 Jun - Fri, 4 Sept
BKK
Bangkok
PWM
Portland
฿42,425 Return, found 2 days ago
฿42,425
Return
found 2 days ago
Select Gulf Air flight, departing Sat, 6 Jun from Bangkok to Portland, returning Fri, 4 Sept, priced at ฿42,425 found 2 days ago
American Airlines
Mon, 26 Oct - Sat, 31 Oct
BKK
Bangkok
PWM
Portland
฿43,665 Return, found 4 days ago
฿43,665
Return
found 4 days ago
Select American Airlines flight, departing Mon, 26 Oct from Bangkok to Portland, returning Sat, 31 Oct, priced at ฿43,665 found 4 days ago
United
Mon, 26 Oct - Sat, 31 Oct
BKK
Bangkok
PWM
Portland
฿51,390 Return, found 4 days ago
฿51,390
Return
found 4 days ago
Select United flight, departing Mon, 26 Oct from Bangkok to Portland, returning Sat, 31 Oct, priced at ฿51,390 found 4 days ago

Frequently asked questions

How do I find cheap flights to Casco Bay Islands that have flexible change policies?
We understand that travel schedules can change from one day to the next, so choosing a flexible ticket with Expedia is a wise idea. Simply check the "No change fee" box below the "Flexible change policies" filter. Your low-priced, flexible flight to Casco Bay Islands is only a few clicks away.
Which airlines fly to Casco Bay Islands?
Pack your suitcase and take your pick of these well-known airlines that offer flights into or near Casco Bay Islands:

  • United Airlines - 316 flights to or near Casco Bay Islands each month, including 316 flights to Portland Intl. Jetport Airport (PWM) per month.
  • Delta Air Lines - 294 flights to or near Casco Bay Islands each month, including 294 flights to Portland Intl. Jetport Airport (PWM) per month.
  • American Airlines - 290 flights to or near Casco Bay Islands each month, including 290 flights to Portland Intl. Jetport Airport (PWM) per month.

How can I find cheap tickets to Casco Bay Islands?
An effective strategy for walking away with cheap tickets is to be flexible with your dates. Begin with searching for your flight to Casco Bay Islands, then click on the "flexible dates" box to see prices for nearby days. Another good tip? Book ahead of time. To give you an idea of fares, ฿40,195 was the lowest price for a flight to Casco Bay Islands in the last seven days.
How much is a flight to Casco Bay Islands?
If you were jetting one way from Bangkok (BKK), you could've snapped up a bargain fare for just ฿22,640 in the last seven days. Round-trip journeys to Casco Bay Islands ranged from only ฿40,195 to ฿51,390 over the same period.
What are the most popular airports to fly into in Casco Bay Islands?
Portland Intl. Jetport Airport (PWM) is the main jumping-off point for those eager to visit Casco Bay Islands. Roughly 1,140 flights per month land at this airport.
How much is a plane ticket to Casco Bay Islands?
In the last seven days, flights to Casco Bay Islands varied between ฿40,195 and ฿51,390. Prices generally depend on the time of departure, airline, cabin class and when you make your booking.
What months are the cheapest to book a flight to Casco Bay Islands?
February is the cheapest month to lock in a seat for your Casco Bay Islands trip. Tickets are priciest during the month of December, so steer clear of this time if you can.

Travel information

Destination airport
Portland Intl. Jetport
Destination airport IATA code
PWM
Destination city name
Portland
Return price
฿40,195

Trending flights to Casco Bay Islands

Prices were available within the past 7 days and start at ฿22,640 for one-way flights and ฿40,195 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Tue, 28 Apr - Sat, 2 May
BKK
Bangkok
PWM
Portland
฿40,195 Return, found 5 days ago
฿40,195
Return
found 5 days ago
Select Qatar Airways flight, departing Tue, 28 Apr from Bangkok to Portland, returning Sat, 2 May, priced at ฿40,195 found 5 days ago
*Available to Expedia members.