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$438+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — OPO
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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

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 September 16, 2025.

Round-trip from

$535
(United Airlines)

One-way from

$438
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$992
From Spartanburg to Porto
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One-way flight from Spartanburg to Porto
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Highest demand for flights based on searches. 22% potential increase in price ($266 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($72 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 10/206:31 pmCLT - OPO
1 stop10h 14mUnited Airlines
Wed 11/512:35 pmOPO - CLT
1 stop14h 24mUnited Airlines
Deal found 9/16$535
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/46:20 pmCLT - OPO
1 stop10h 10mUnited Airlines
Fri 1/166:00 amOPO - CLT
2 stops39h 17mUnited Airlines
Deal found 9/13$536
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/410:43 amCLT - OPO
2 stops17h 47mUnited Airlines
Thu 1/156:00 amOPO - CLT
2 stops39h 17mUnited Airlines
Deal found 9/13$541
This United Airlines deal was found by Cheapflights users on 9/13. 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
Thu 1/156:00 amOPO - CLT
2 stops17h 59mUnited Airlines
Deal found 9/13$544
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/15$545
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:40 pmCLT - OPO
1 stop11h 00mAmerican Airlines
Fri 1/168:20 amOPO - CLT
2 stops18h 23mAmerican Airlines
Deal found 9/14$554
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Tue 10/78:30 amCLT - OPO
2 stops25h 30mMultiple Airlines
Tue 10/1411:50 amOPO - CLT
2 stops33h 55mMultiple Airlines
Deal found 9/13$556
This Lufthansa deal was found by Cheapflights users on 9/13. 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 11/26:50 pmCLT - OPO
1 stop13h 00mLufthansa
Thu 1/152:05 pmOPO - CLT
1 stop31h 50mLufthansa
Deal found 9/13$560
This Air Canada deal was found by Cheapflights users on 9/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:30 amCLT - OPO
2 stops22h 45mAir Canada
Fri 1/166:00 amOPO - CLT
2 stops39h 17mAir Canada
Deal found 9/13$561
This KAYAK deal was found by Cheapflights users on 9/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:50 pmCLT - OPO
1 stop13h 00mLufthansa
Thu 1/152:05 pmOPO - CLT
1 stop31h 50mLufthansa
Deal found 9/13$565
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 10/203:15 pmCLT - OPO
2 stops18h 50mMultiple Airlines
Wed 11/54:05 pmOPO - CLT
3 stops29h 50mMultiple Airlines
Deal found 9/16$568

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 September 16, 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 10/20

10:34 am-9:45 am

2 stops18h 11m

Porto

Wed 11/5

12:35 pm-1:10 pm

1 stop29h 35m

$535

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Tue 11/4

6:20 pm-9:30 am

1 stop10h 10m

Porto

Fri 1/16

6:00 am-4:17 pm

2 stops39h 17m

$536

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Sun 11/2

5:00 am-8:30 am

2 stops22h 30m

Porto

Thu 1/15

6:00 am-6:59 pm

2 stops17h 59m

$544

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Sun 11/2

5:00 am-8:30 am

2 stops22h 30m

Porto

Fri 1/16

6:00 am-9:16 pm

2 stops20h 16m

$545

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Sun 11/2

3:40 pm-7:40 am

1 stop11h 00m

Porto

Fri 1/16

8:20 am-9:43 pm

2 stops18h 23m

$554

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Tue 11/4

6:20 pm-9:30 am

1 stop10h 10m

Porto

Mon 1/19

12:30 pm-8:57 pm

2 stops37h 27m

$556

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Tue 2/24

4:19 pm-11:45 am

2 stops14h 26m

Porto

Mon 3/9

8:40 pm-9:52 pm

2 stops29h 12m

$558

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Tue 2/24

6:50 pm-12:50 pm

1 stop13h 00m

Porto

Mon 3/9

1:45 pm-5:55 pm

1 stop32h 10m

$561

CharlottePorto

CLT - OPO

CLTOPO

Charlotte Douglas

Sun 3/1

6:15 pm-9:30 am

1 stop10h 15m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 September 12, 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, January is the cheapest month in which you can book a flight from Spartanburg to Porto (average of $523). Flying from Spartanburg to Porto in June is currently the most expensive (average of $1,027). 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 September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Spartanburg to Porto as you normally would.

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. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 16, 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
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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
2,924 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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
7,407 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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??
British Airways
6.7
Okay
7,363 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Boarding

7.7

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 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 18h 11m. Fly via United Airlines 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, January is the cheapest month in which you can book a flight from Spartanburg to Porto (average of $523). Flying from Spartanburg to Porto in June is currently the most expensive (average of $1,027). 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

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$577Average$994FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$587Average$804FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$602Average$2,070FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$607Average$849FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$610Average$802FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$702Average$1,063FlexibilityNo cancel feeOn-time69%

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