HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$303+ Cheap flights from Spartanburg, SC 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — OPO
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Spartanburg 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.

Cheapflights Tip: The best prices from Spartanburg to Porto are usually found in January or November, booked 61 days in advance, depart on a Wednesday or Thursday and return on a Monday

Find flight deals from Spartanburg to Porto

Cheapest flights from Spartanburg to Porto
Explore the most affordable flight options available from Spartanburg to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This United deal was found by Cheapflights users on 10/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/171:56 pmCLT - OPO
1 stop14h 34mMultiple Airlines
Wed 12/31:45 pmOPO - CLT
1 stop32h 10mMultiple Airlines
Deal found 10/23$579
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/25:00 amCLT - OPO
2 stops22h 30mUnited Airlines
Fri 1/166:00 amOPO - CLT
2 stops20h 16mUnited Airlines
Deal found 10/23$738
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:50 pmCLT - OPO
1 stop13h 00mLufthansa
Sun 11/25:00 amOPO - CLT
2 stops22h 58mLufthansa
Deal found 10/21$768
This Ovago deal was found by Cheapflights users on 10/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/26:50 pmCLT - OPO
1 stop13h 00mLufthansa
Fri 1/161:45 pmOPO - CLT
1 stop32h 10mLufthansa
Deal found 10/23$788
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 10/286:20 pmCLT - OPO
1 stop11h 10mUnited Airlines
Sun 11/212:35 pmOPO - CLT
1 stop14h 24mUnited Airlines
Deal found 10/20$793
This Iberia deal was found by Cheapflights users on 10/21. 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.
Sun 11/23:40 pmCLT - OPO
1 stop11h 00mIberia
Fri 1/168:20 amOPO - CLT
1 stop12h 45mIberia
Deal found 10/21$795
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:50 pmCLT - OPO
2 stops18h 40mSWISS
Sun 11/27:25 pmOPO - CLT
2 stops26h 30mSWISS
Deal found 10/22$839

Cheap flight deals from Spartanburg to Porto

Keep the following information in mind while searching for Spartanburg to Porto flight deals. Data was last updated October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$579
(United)

One-way from

$303
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$872
Provider with most accurate pricing for Charlotte Douglas-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Charlotte Douglas-Porto flights.
Search Deals
From Spartanburg to Porto
Search Deals
One-way flight from Spartanburg to Porto
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($226 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Spartanburg 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 October 23, 2025.
Use the filters below to find and compare flights from Spartanburg to Porto that are best for you.

Fly from

Spartanburg

Fly to

Porto

Route

Depart

Return

Price

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Mon 11/17

10:43 am-9:30 am

2 stops17h 47m

Porto

Wed 12/3

1:45 pm-4:55 pm

1 stop32h 10m

$579

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Thu 2/5

6:50 pm-12:50 pm

1 stop13h 00m

Porto

Tue 2/10

6:00 am-8:57 pm

2 stops43h 57m

$632

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Thu 2/5

4:10 pm-11:45 am

1 stop14h 35m

Porto

Tue 2/10

8:20 am-4:05 pm

1 stop12h 45m

$644

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Fri 3/27

7:50 pm-5:30 pm

2 stops41h 40m

Porto

Fri 4/10

7:20 pm-5:07 pm

2 stops26h 47m

$650

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Fri 3/27

7:50 pm-6:55 am

2 stops31h 05m

Porto

Thu 4/9

6:15 am-4:45 pm

1 stop15h 30m

$661

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Fri 3/27

11:30 am-10:30 am

2 stops19h 00m

Porto

Tue 3/31

4:20 pm-6:14 pm

2 stops30h 54m

$742

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Fri 3/27

7:50 pm-12:50 pm

1 stop13h 00m

Porto

Tue 3/31

11:05 am-4:45 pm

1 stop34h 40m

$765

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Fri 3/27

6:20 pm-9:30 am

1 stop11h 10m

Porto

Tue 3/31

6:00 am-6:48 pm

2 stops17h 48m

$769

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Sun 11/9

6:00 am-8:40 am

2 stops45h 40m

$303

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Wed 4/15

9:30 am-7:00 pm

3 stops28h 30m

$385

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 18 results
1
2

Best time to book a flight from Spartanburg to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Spartanburg 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 Spartanburg to Porto

How far ahead should I book a flight from Spartanburg to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Spartanburg to Porto. Price data was last updated on October 17, 2025.

To ensure you get the cheapest price possible for a flight from Spartanburg to Porto, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Spartanburg to Porto?

Currently, November is the cheapest month in which you can book a flight from Spartanburg to Porto (average of $560). Flying from Spartanburg to Porto in June is currently the most expensive (average of $1,082). 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.

What is the cheapest time of day to fly from SB1 to OPO?

Find hourly flight availability from Spartanburg 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 October 23, 2025.

It’s optimal to fly from Spartanburg to Porto in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Spartanburg to Porto?

Use this chart to determine the cheapest time to fly round-trip from Spartanburg to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Spartanburg to Porto flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Spartanburg to Porto?

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 October 23, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Iberia from Spartanburg 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
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,028 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Iberia
7.0
Good
2,997 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Lufthansa
6.8
Okay
7,514 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
British Airways
6.7
Okay
7,467 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

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

  • What airport do you fly into for flights to Porto from Spartanburg?

    Most people fly into Porto (OPO) if they book a flight to Porto from Spartanburg. On average, Porto has 0 inbound flights from Spartanburg per day from 6 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.

  • How long is the flight from Spartanburg to Porto?

    There are many flights that can get you from Spartanburg to Porto in 14h 35m. Fly via Iberia to get the fastest option. There are 3827 mi between Spartanburg and Porto.

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

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

  • How can I find direct flights from Spartanburg to Porto?

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

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

    Yes. Cheapflights offers flight deals from Spartanburg 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 Spartanburg to Porto?

    Currently, November is the cheapest month in which you can book a flight from Spartanburg to Porto (average of $560). Flying from Spartanburg to Porto in June is currently the most expensive (average of $1,082). 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
Arcos de Valdevez
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 6 airlines flying from Spartanburg to Porto

Discover the top 6 airlines that operate flights from Spartanburg 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$577Average$994FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$587Average$784FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$607Average$849FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$608Average$757FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$619Average$1,062FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$663Average$2,070FlexibilityNo cancel feeOn-time70%

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.