$1,023+ Cheap flights from Denver (DEN) 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EAS
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Denver to San Sebastian 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 Denver to San Sebastian
Cheapest
Best
Last-minute
Cheapest flights from Denver to San SebastianExplore the most affordable flight options available from Denver to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Denver to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:40 am -
2 stops24h 55m
Thu 10/296:10 pm -
2 stops53h 25m
Deal found 9/17![Multiple Airlines logo]()
$1,023
This Finnair deal was found by Cheapflights users on 9/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:12 pm -
2 stops15h 48m
Fri 12/119:20 am -
2 stops18h 33m
Deal found 9/21![Finnair logo]()
$1,413
This British Airways deal was found by Cheapflights users on 9/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/291:05 pm -
1 stop34h 05m
Deal found 9/17![British Airways logo]()
$1,525
This AirNGo deal was found by Cheapflights users on 9/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/296:10 pm -
2 stops53h 00m
Deal found 9/17![Iberia logo]()
$1,713
Best flights from Denver to San SebastianDiscover carefully curated flight deals from Denver to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Denver to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Sat 10/244:40 pm -
2 stops17h 55m
Thu 10/296:10 pm -
3 stops31h 15m
Deal found 9/17![Multiple Airlines logo]()
$1,410
This Finnair deal was found by Cheapflights users on 9/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:12 pm -
2 stops15h 48m
Fri 12/119:20 am -
2 stops18h 33m
Deal found 9/21![Finnair logo]()
$1,413
This British Airways deal was found by Cheapflights users on 9/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/291:05 pm -
1 stop34h 05m
Deal found 9/17![British Airways logo]()
$1,525
This AirNGo deal was found by Cheapflights users on 9/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/296:10 pm -
2 stops53h 00m
Deal found 9/17![Iberia logo]()
$1,713
Last-minute flights from Denver to San SebastianDiscover last-minute flight deals from Denver to San Sebastian. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Sebastian. Data last updated September 22, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:40 am -
2 stops24h 55m
Thu 10/296:10 pm -
2 stops53h 25m
Deal found 9/17![Multiple Airlines logo]()
$1,023
This British Airways deal was found by Cheapflights users on 9/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/291:05 pm -
1 stop34h 05m
Deal found 9/17![British Airways logo]()
$1,525
This AirNGo deal was found by Cheapflights users on 9/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 pm -
1 stop15h 14m
Thu 10/296:10 pm -
2 stops53h 00m
Deal found 9/17![Iberia logo]()
$1,713
Find flight deals from Denver to San Sebastian
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 September 22, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,023 (Trip.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver 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 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from Denver to San Sebastian that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sat 10/24
4:40 pm-6:35 pm
2 stops17h 55m
San Sebastián
Thu 10/29
6:10 pm-6:25 pm
3 stops31h 15m
$1,410
Quickest round-trip
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 12/7
1:12 pm-1:00 pm
2 stops15h 48m
San Sebastián
Fri 12/11
9:20 am-7:53 pm
2 stops18h 33m
$1,413
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sat 10/24
6:01 pm-5:15 pm
1 stop15h 14m
San Sebastián
Thu 10/29
1:05 pm-4:10 pm
1 stop34h 05m
$1,525
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sat 10/24
6:01 pm-5:15 pm
1 stop15h 14m
San Sebastián
Thu 10/29
6:10 pm-4:10 pm
2 stops53h 00m
$1,713
Sorted by cheapest first
Compare providers for flights from Denver to San Sebastian
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to San Sebastian in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-San Sebastian flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Denver-San Sebastian flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Denver-San Sebastian flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-San Sebastian flights, Cheapflights users trust Ovago the most. Ovago 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 Denver-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 Denver to San Sebastian
Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Denver with our price prediction graph.
DEN-EAS
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 Denver to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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