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$1,514+ Cheap flights from Charleston (CHS) to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — EAS
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheap flight deals from Charleston to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Charleston (CHS) to San Sebastian (EAS). 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 November 6, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,514
(American Airlines)
Provider with most accurate pricing for Charleston-San Sebastián flight deals.
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Provider most trusted by Cheapflights users for Charleston-San Sebastián flights.
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Find flight deals from Charleston to San Sebastian

Best flights from Charleston to San Sebastian
Discover carefully curated flight deals from Charleston to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 6, 2025.

This American Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 3/275:51 amCHS - EAS
2 stops26h 09mAmerican Airlines
Tue 3/311:40 pmEAS - CHS
2 stops56h 40mAmerican Airlines
Deal found 11/4$1,514

Cheapflights Fare Finder

 
Customize your flight search to find flights from Charleston to San Sebastian 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 November 6, 2025.
Use the filters below to find and compare flights from Charleston to San Sebastian that are best for you.

Fly from

Charleston

Fly to

San Sebastian

Route

Depart

Return

Price

CharlestonSan Sebastian

CHS - EAS

CHSEAS

Charleston

Fri 3/27

5:51 am-1:00 pm

2 stops26h 09m

San Sebastián

Tue 3/31

1:40 pm-4:20 pm

2 stops56h 40m

$1,514

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

  • Most accurate provider: When it comes to deals on Charleston-San Sebastian flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Charleston-San Sebastian flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Charleston-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Charleston-San Sebastian flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Charleston-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Charleston to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Charleston 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.

Related info for your journey

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

  • How long is the flight from Charleston to San Sebastian?

    American Airlines can get you from Charleston to San Sebastian in just under 26h 09m. Your travel time can differ by up to . There are 4156 mi between Charleston and San Sebastian.

  • Can I find deals for flights from Charleston to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Charleston to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Charleston to San Sebastian?

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

  • Can I find deals for business class flights from Charleston to San Sebastian?

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

See more FAQs

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