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Cheap flights from Portland, Maine to Costa Rica from $179

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 12/16. 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

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Find the cheapest flights from Portland, Maine to Costa Rica

Cheap round-trip flights

American Airlines Logo
5:59 pm - 12:05 pmPWM-SJO
20h 06m2 stops
American Airlines Logo
1:05 pm - 11:28 amSJO-PWM
20h 23m2 stops
$318American Airlines
Find Deal
Sat, Oct 25 - Thu, Oct 30
Delta Logo
6:00 am - 12:08 pmPWM-SJO
8h 08m1 stop
Delta Logo
1:35 pm - 12:11 amSJO-PWM
8h 36m1 stop
$334Delta
Find Deal
Fri, Sep 26 - Fri, Oct 3
American Airlines Logo
5:37 pm - 12:19 pmPWM-SJO
19h 42m2 stops
American Airlines Logo
6:00 am - 10:32 pmSJO-PWM
15h 32m2 stops
$338American Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 15
American Airlines Logo
6:39 pm - 1:59 pmPWM-SJO
20h 20m2 stops
American Airlines Logo
6:00 am - 5:07 pmSJO-PWM
10h 07m1 stop
$343American Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 15
American Airlines Logo
7:43 am - 8:02 pmPWM-SJO
13h 19m2 stops
American Airlines Logo
3:50 pm - 12:05 pmSJO-PWM
19h 15m2 stops
$391American Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
American Airlines Logo
1:57 pm - 12:45 pmPWM-SJO
24h 48m1 stop
American Airlines Logo
6:00 am - 8:40 pmSJO-PWM
12h 40m2 stops
$399American Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 3
American Airlines Logo
7:31 am - 1:20 pmPWM-SJO
7h 49m1 stop
American Airlines Logo
2:40 pm - 11:28 amSJO-PWM
18h 48m2 stops
$426American Airlines
Find Deal
Sat, Oct 25 - Thu, Oct 30
United Airlines Logo
6:23 pm - 12:26 pmPWM-SJO
20h 03m2 stops
United Airlines Logo
7:55 am - 2:25 pmSJO-PWM
28h 30m2 stops
$454United Airlines
Find Deal
Mon, Sep 8 - Fri, Sep 12
United Airlines Logo
7:22 pm - 8:39 pmPWM-SJO
26h 17m2 stops
United Airlines Logo
6:30 am - 11:17 pmSJO-PWM
15h 47m2 stops
$496United Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
Delta Logo
5:40 am - 12:52 pmPWM-SJO
8h 12m1 stop
Delta Logo
7:00 am - 9:59 pmSJO-PWM
13h 59m1 stop
$516Delta
Find Deal
Mon, Nov 10 - Sat, Nov 15

Delta flights from Portland, Maine to Costa Rica

Our best Delta deals on Portland, Maine to Costa Rica flight tickets
Delta
Sep 26
PWM6:00 amPortland
8h 08m
1 stop
SJO12:08 pmSan José Juan Santamaria Intl
Oct 3
SJO1:35 pmSan José Juan Santamaria Intl
8h 36m
1 stop
PWM12:11 amPortland
$334
Find similar
Delta
Nov 10
PWM5:40 amPortland
8h 12m
1 stop
SJO12:52 pmSan José Juan Santamaria Intl
Nov 15
SJO7:00 amSan José Juan Santamaria Intl
13h 59m
1 stop
PWM9:59 pmPortland
$516
Find similar
Delta
Sep 25
PWM6:00 amPortland
8h 00m
1 stop
LIR12:00 pmLiberia
Oct 2
LIR1:25 pmLiberia
8h 46m
1 stop
PWM12:11 amPortland
$525
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United Airlines flights from Portland, Maine to Costa Rica

Our best United Airlines deals on Portland, Maine to Costa Rica flight tickets
United Airlines
Sep 8
PWM6:23 pmPortland
20h 03m
2 stops
SJO12:26 pmSan José Juan Santamaria Intl
Sep 12
SJO7:55 amSan José Juan Santamaria Intl
28h 30m
2 stops
PWM2:25 pmPortland
$454
Find similar
United Airlines
Jan 10
PWM7:22 pmPortland
26h 17m
2 stops
SJO8:39 pmSan José Juan Santamaria Intl
Jan 17
SJO6:30 amSan José Juan Santamaria Intl
15h 47m
2 stops
PWM11:17 pmPortland
$496
Find similar
United Airlines
Jan 10
PWM4:48 pmPortland
21h 08m
1 stop
SJO12:56 pmSan José Juan Santamaria Intl
Jan 17
SJO6:30 amSan José Juan Santamaria Intl
15h 47m
2 stops
PWM11:17 pmPortland
$510
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 August 13, 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

Sat 10/25

5:59 pm-12:05 pm

2 stops20h 06m

San José Juan Santamaria Intl

Thu 10/30

1:05 pm-11:28 am

2 stops20h 23m

$318

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 9/26

6:00 am-12:08 pm

1 stop8h 08m

San José Juan Santamaria Intl

Fri 10/3

1:35 pm-12:11 am

1 stop8h 36m

$334

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 11/10

5:37 pm-12:19 pm

2 stops19h 42m

San José Juan Santamaria Intl

Sat 11/15

6:00 am-10:32 pm

2 stops15h 32m

$338

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 11/10

6:39 pm-1:59 pm

2 stops20h 20m

San José Juan Santamaria Intl

Sat 11/15

6:00 am-5:07 pm

1 stop10h 07m

$343

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 1/10

7:43 am-8:02 pm

2 stops13h 19m

San José Juan Santamaria Intl

Sat 1/17

3:50 pm-12:05 pm

2 stops19h 15m

$391

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 9/26

1:57 pm-12:45 pm

1 stop24h 48m

San José Juan Santamaria Intl

Fri 10/3

6:00 am-8:40 pm

2 stops12h 40m

$399

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 10/25

7:31 am-1:20 pm

1 stop7h 49m

San José Juan Santamaria Intl

Thu 10/30

2:40 pm-11:28 am

2 stops18h 48m

$426

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 9/8

6:23 pm-12:26 pm

2 stops20h 03m

San José Juan Santamaria Intl

Fri 9/12

7:55 am-2:25 pm

2 stops28h 30m

$454

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 1/10

7:22 pm-8:39 pm

2 stops26h 17m

San José Juan Santamaria Intl

Sat 1/17

6:30 am-11:17 pm

2 stops15h 47m

$496

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 11/10

5:40 am-12:52 pm

1 stop8h 12m

San José Juan Santamaria Intl

Sat 11/15

7:00 am-9:59 pm

1 stop13h 59m

$516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $336, 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 October is your next best option. Flight prices from Portland, Maine to Costa Rica during October average around $494.

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 23% 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

Best Price Found

$179

Fastest flight time

7h 38m

Direct flights

None

Airports in Costa Rica

2 airports
The best one-way flight to Costa Rica from Portland, Maine in the past 72 hours is $179. The best round-trip flight deal from Portland, Maine to Costa Rica found on momondo in the last 72 hours is $318.
The fastest flight from Portland, Maine to Costa Rica takes 7h 38m
There are no direct flights from Portland, Maine to Costa Rica. Popular non-direct routes for this connection are Portland Airport - Liberia Airport and Portland Airport - San José Juan Santamaria Intl Airport.
There are 2 airports near Costa Rica: Liberia (LIR), San José Juan Santamaria Intl (SJO)
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  • 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 $425Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $462Free CancellationRating
8.0
7,979 reviews
Search Delta flights
United AirlinesPriceFrom $538Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights
SouthwestPriceFrom $551Free CancellationRating
8.0
4,246 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.

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