Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Portland, Maine to Costa Rica from $163

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Costa Rica departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland, Maine to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:02 am - 12:11 pmPWM-SJO
30h 09m2 stops
American Airlines Logo
7:00 am - 11:37 pmSJO-PWM
15h 37m2 stops
$269American Airlines
Find Deal
Thu, Nov 27 - Thu, Dec 4
American Airlines Logo
12:46 pm - 10:30 pmPWM-SJO
10h 44m2 stops
American Airlines Logo
7:00 am - 11:49 pmSJO-PWM
15h 49m2 stops
$272American Airlines
Find Deal
Sun, Feb 1 - Fri, Feb 13
United Airlines Logo
3:20 pm - 11:25 amPWM-SJO
21h 05m2 stops
United Airlines Logo
8:45 am - 11:09 pmSJO-PWM
13h 24m2 stops
$366United Airlines
Find Deal
Mon, Nov 24 - Mon, Dec 8
United Airlines Logo
3:12 pm - 1:10 pmPWM-LIR
22h 58m2 stops
United Airlines Logo
8:35 am - 11:30 pmLIR-PWM
13h 55m2 stops
$370United Airlines
Find Deal
Mon, Jan 19 - Tue, Jan 27
Delta Logo
5:30 am - 1:00 pmPWM-SJO
8h 30m1 stop
Delta Logo
7:00 am - 10:29 pmSJO-PWM
14h 29m1 stop
$393Delta
Find Deal
Thu, Jan 29 - Sun, Feb 8
Delta Logo
5:30 am - 1:00 pmPWM-SJO
8h 30m1 stop
Delta Logo
7:00 am - 10:29 pmSJO-PWM
14h 29m1 stop
$441Delta
Find Deal
Thu, Jan 29 - Sun, Feb 8
JetBlue Logo
2:20 pm - 9:54 pmPWM-SJO
9h 34m1 stop
JetBlue Logo
9:00 am - 11:36 pmSJO-PWM
12h 36m2 stops
$452JetBlue
Find Deal
Wed, Apr 15 - Wed, Apr 29
Multiple Airlines Logo
11:16 am - 11:42 amPWM-SJO
25h 26m1 stop
Multiple Airlines Logo
1:31 pm - 9:06 amSJO-PWM
42h 35m2 stops
$505Multiple Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
Multiple Airlines Logo
7:22 pm - 3:50 amPWM-SJO
9h 28m1 stop
Multiple Airlines Logo
5:10 pm - 2:19 pmSJO-PWM
20h 09m1 stop
$507Multiple Airlines
Find Deal
Mon, Dec 1 - Tue, Dec 9
JetBlue Logo
2:20 pm - 9:54 pmPWM-SJO
9h 34m1 stop
JetBlue Logo
10:59 pm - 1:23 pmSJO-PWM
12h 24m1 stop
$580JetBlue
Find Deal
Tue, Apr 14 - Tue, Apr 28

American Airlines flights from Portland, Maine to Costa Rica

Our best American Airlines deals on Portland, Maine to Costa Rica flight tickets
American Airlines
Nov 27
PWM7:02 amPortland
30h 09m
2 stops
SJO12:11 pmSan José Juan Santamaria Intl
Dec 4
SJO7:00 amSan José Juan Santamaria Intl
15h 37m
2 stops
PWM11:37 pmPortland
$269
Find similar
American Airlines
Feb 1
PWM12:46 pmPortland
10h 44m
2 stops
SJO10:30 pmSan José Juan Santamaria Intl
Feb 13
SJO7:00 amSan José Juan Santamaria Intl
15h 49m
2 stops
PWM11:49 pmPortland
$272
Find similar
American Airlines
Nov 27
PWM7:02 amPortland
30h 09m
2 stops
SJO12:11 pmSan José Juan Santamaria Intl
Dec 3
SJO6:00 amSan José Juan Santamaria Intl
16h 37m
2 stops
PWM11:37 pmPortland
$277
Find similar

United Airlines flights from Portland, Maine to Costa Rica

Our best United Airlines deals on Portland, Maine to Costa Rica flight tickets
United Airlines
Nov 24
PWM3:20 pmPortland
21h 05m
2 stops
SJO11:25 amSan José Juan Santamaria Intl
Dec 8
SJO8:45 amSan José Juan Santamaria Intl
13h 24m
2 stops
PWM11:09 pmPortland
$366
Find similar
United Airlines
Jan 19
PWM3:12 pmPortland
22h 58m
2 stops
LIR1:10 pmLiberia
Jan 27
LIR8:35 amLiberia
13h 55m
2 stops
PWM11:30 pmPortland
$370
Find similar
United Airlines
Jan 29
PWM4:10 pmPortland
21h 46m
1 stop
SJO12:56 pmSan José Juan Santamaria Intl
Feb 8
SJO8:45 amSan José Juan Santamaria Intl
28h 46m
2 stops
PWM2:31 pmPortland
$380
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Costa Rica that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Portland, Maine to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSan José

PWM - SJO

PWMSJO

Portland

Thu 11/27

7:02 am-12:11 pm

2 stops30h 09m

San José Juan Santamaria Intl

Thu 12/4

7:00 am-11:37 pm

2 stops15h 37m

$269

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sun 2/1

12:46 pm-10:30 pm

2 stops10h 44m

San José Juan Santamaria Intl

Fri 2/13

7:00 am-11:49 pm

2 stops15h 49m

$272

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 11/24

3:20 pm-11:25 am

2 stops21h 05m

San José Juan Santamaria Intl

Mon 12/8

8:45 am-11:09 pm

2 stops13h 24m

$366

PortlandLiberia

PWM - LIR

PWMLIR

Portland

Mon 1/19

3:12 pm-1:10 pm

2 stops22h 58m

Liberia

Tue 1/27

8:35 am-11:30 pm

2 stops13h 55m

$370

PortlandSan José

PWM - SJO

PWMSJO

Portland

Thu 1/29

5:30 am-1:00 pm

1 stop8h 30m

San José Juan Santamaria Intl

Sun 2/8

7:00 am-10:29 pm

1 stop14h 29m

$393

PortlandSan José

PWM - SJO

PWMSJO

Portland

Thu 1/29

5:30 am-1:00 pm

1 stop8h 30m

San José Juan Santamaria Intl

Sun 2/8

7:00 am-10:29 pm

1 stop14h 29m

$441

PortlandSan José

PWM - SJO

PWMSJO

Portland

Wed 4/15

2:20 pm-9:54 pm

1 stop9h 34m

San José Juan Santamaria Intl

Wed 4/29

9:00 am-11:36 pm

2 stops12h 36m

$452

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 12/13

11:16 am-11:42 am

1 stop25h 26m

San José Juan Santamaria Intl

Sat 12/20

1:31 pm-9:06 am

2 stops42h 35m

$505

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 12/1

7:22 pm-3:50 am

1 stop9h 28m

San José Juan Santamaria Intl

Tue 12/9

5:10 pm-2:19 pm

1 stop20h 09m

$507

PortlandSan José

PWM - SJO

PWMSJO

Portland

Tue 4/14

2:20 pm-9:54 pm

1 stop9h 34m

San José Juan Santamaria Intl

Tue 4/28

10:59 pm-1:23 pm

1 stop12h 24m

$580

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Costa Rica from

How to get the cheapest flight ticket from Portland, Maine to Costa Rica

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 Costa Rica?

The cheapest month to fly to Costa Rica from Portland, Maine is in September. Flight prices, which tend to average around $431, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in September, then August is your next best option. Flight prices from Portland, Maine to Costa Rica during August average around $481.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Thursday is the cheapest day to fly to Costa Rica from Portland, Maine. The lowest ticket price found for a Thursday departure recently was $595. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $940. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

What is the cheapest time of day to depart on your flight to Costa Rica?

In the afternoon is the cheapest time of day to fly from Portland, Maine to Costa Rica when you can find flight prices for as low as $397. Flying to Costa Rica in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $861. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Portland, Maine to Costa Rica flights?

You could potentially save up to 21% on your flight if you consider stops on a Portland, Maine to Costa Rica flight.

Cheap Portland, Maine to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Costa Rica

Direct flights

None
There are no direct flights from Portland, Maine to Costa Rica. There are no popular flight routes from Portland, Maine to Costa Rica.
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to Costa Rica?

    Prices for flights from Portland Airport to Costa Rica are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Costa Rica?

  • How old do you have to be to fly from Portland Airport to Costa Rica?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The required travel and health documents for your Costa Rica trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Costa Rica. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Portland, Maine to Costa Rica

Compare and see reviews for airlines that fly from Portland, Maine to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $351Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
DeltaPriceFrom $359Free CancellationRating
7.9
8,002 reviews
Search Delta flights
United AirlinesPriceFrom $473Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
SouthwestPriceFrom $551Free CancellationRating
8.0
4,238 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Costa Rica?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Costa Rica from Portland.

Can I find flights from Portland to Costa Rica with flexible booking policies on momondo?

momondo does allow users to show only those flights to Costa Rica from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Costa Rica?

Once all potential Portland to Costa Rica flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Costa Rica right now. Can momondo alert me if prices change?

Price alerts on flights to Costa Rica from Portland 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.

An easier way to manage your Costa Rica trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 12/3
Wed 12/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica

Popular cities in Costa Rica

Popular flights according to clicks in the last 7 days on momondo
Flights to San Joséfrom $144
Flights to Liberiafrom $220
Flights to Limon
Flights to Tamarindo
Flights to Golfito
Flights to Buenos Aires, Puntarenas
Flights to Palmar Sur