HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$317+ Cheap flights from Grand Rapids (GRR) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
GRR — OPO
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Grand Rapids to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Grand Rapids to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Grand Rapids (GRR) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2025.

Round-trip from

$640
(United Airlines)
From Grand Rapids Gerald R. Ford Intl to Porto
Search Deals

Find flight deals from Grand Rapids to Porto

Cheapest flights from Grand Rapids to Porto
Explore the most affordable flight options available from Grand Rapids to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:22 pmGRR - OPO
1 stop11h 23mUnited Airlines
Sat 11/16:00 amOPO - GRR
2 stops18h 18mUnited Airlines
Deal found 7/29$640
This Iberia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:31 pmGRR - OPO
2 stops26h 24mIberia
Thu 10/308:20 amOPO - GRR
2 stops19h 25mIberia
Deal found 7/30$738
This Lufthansa deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:39 pmGRR - OPO
2 stops23h 41mLufthansa
Mon 10/134:35 pmOPO - GRR
2 stops34h 38mLufthansa
Deal found 7/29$792
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:51 pmGRR - OPO
3 stops28h 44mMultiple Airlines
Sat 10/259:25 pmOPO - GRR
3 stops28h 33mMultiple Airlines
Deal found 7/29$1,591

Cheapflights Fare Finder

 
Customize your flight search to find flights from Grand Rapids to Porto 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, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Grand Rapids to Porto that are best for you.

Fly from

Grand Rapids

Fly to

Porto

Route

Depart

Return

Price

Grand RapidsPorto

GRR - OPO

GRROPO

Grand Rapids Gerald R. Ford Intl

Sun 10/19

5:22 pm-9:45 am

1 stop11h 23m

Porto

Sat 11/1

6:00 am-8:18 pm

2 stops18h 18m

$640

Grand RapidsPorto

GRR - OPO

GRROPO

Grand Rapids Gerald R. Ford Intl

Thu 10/16

12:31 pm-7:55 pm

2 stops26h 24m

Porto

Thu 10/30

8:20 am-11:45 pm

2 stops19h 25m

$738

Grand RapidsPorto

GRR - OPO

GRROPO

Grand Rapids Gerald R. Ford Intl

Sun 9/28

6:39 pm-11:20 pm

2 stops23h 41m

Porto

Mon 10/13

4:35 pm-10:13 pm

2 stops34h 38m

$792

Grand RapidsPorto

GRR - OPO

GRROPO

Grand Rapids Gerald R. Ford Intl

Wed 10/15

12:51 pm-10:35 pm

3 stops28h 44m

Porto

Sat 10/25

9:25 pm-8:58 pm

3 stops28h 33m

$1,591

Grand RapidsPorto

GRR - OPO

GRROPO

Grand Rapids Gerald R. Ford Intl

Sun 9/28

8:00 am-10:35 pm

3 stops33h 35m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Grand Rapids to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Grand Rapids with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Grand Rapids to Porto

What is the cheapest time of day to fly from GRR to OPO?

Find hourly flight availability from Grand Rapids to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

It’s optimal to fly from Grand Rapids to Porto at noon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated July 30, 2025.
Get a feel of what it's like to fly with United Airlines, Iberia, and Lufthansa from Grand Rapids to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
2,859 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,269 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Grand Rapids to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Grand Rapids to Porto round-trip?

    Cheapflights users have booked flights from Grand Rapids to Porto round-trip from $640. Other airlines that can offer you cheap pricing are Iberia, from $756, and Lufthansa, from $792.

  • Can I find deals for flights from Grand Rapids to Porto that include hotel bookings?

    Yes. In addition to deals on Grand Rapids to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Grand Rapids to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grand Rapids to Porto.

  • Can I find deals for business class flights from Grand Rapids to Porto?

    Yes. Cheapflights offers flight deals from Grand Rapids to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Grand Rapids to Porto?

    Currently, January is the cheapest month in which you can book a flight from Grand Rapids to Porto (average of $523). Flying from Grand Rapids to Porto in June is currently the most expensive (average of $1,033). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Coimbra

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Grand Rapids to Porto

Discover the top airline that operate flights from Grand Rapids to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$790Average$1,170FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.