$395+ Cheap flights from Denver (DEN) to San Sebastian (EAS)
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.
DEN — EAS
Sep 5 — Sep 121
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
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Best
Last-minute
One-way
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 August 6, 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 August 6, 2026.
This Expedia deal was found by Cheapflights users on 8/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops18h 15m
Mon 10/269:30 pm -
2 stops32h 28m
Deal found 8/5![Iberia logo]()
$929
This Travelocity deal was found by Cheapflights users on 8/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:40 pm -
2 stops30h 00m
Fri 9/189:20 am -
2 stops42h 18m
Deal found 8/2![Iberia logo]()
$1,023
This British Airways deal was found by Cheapflights users on 8/1. 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.
Sun 12/66:40 pm -
2 stops42h 10m
Thu 12/109:30 pm -
2 stops32h 27m
Deal found 8/1![British Airways logo]()
$1,077
This American Airlines deal was found by Cheapflights users on 8/2. 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 8/3010:29 am -
2 stops38h 11m
Thu 9/179:20 am -
2 stops22h 31m
Deal found 8/2![American Airlines logo]()
$1,248
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:37 pm -
2 stops48h 43m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/4![Multiple Airlines logo]()
$1,260
This American Airlines deal was found by Cheapflights users on 8/2. 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 8/3010:29 am -
2 stops38h 11m
Sat 9/191:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,298
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:15 am -
2 stops18h 25m
Fri 9/181:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,311
This Cheapflightsfares deal was found by Cheapflights users on 8/1. 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.
Mon 8/316:40 pm -
2 stops29h 40m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/1![Iberia logo]()
$1,360
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 August 6, 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 August 6, 2026.
This Expedia deal was found by Cheapflights users on 8/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops18h 15m
Mon 10/269:30 pm -
2 stops32h 28m
Deal found 8/5![Iberia logo]()
$929
This American Airlines deal was found by Cheapflights users on 8/2. 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 8/3010:29 am -
2 stops38h 11m
Thu 9/179:20 am -
2 stops22h 31m
Deal found 8/2![American Airlines logo]()
$1,248
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:37 pm -
2 stops48h 43m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/4![Multiple Airlines logo]()
$1,260
This Travelocity deal was found by Cheapflights users on 8/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:40 pm -
2 stops30h 00m
Fri 9/189:20 am -
2 stops42h 18m
Deal found 8/2![Iberia logo]()
$1,023
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:15 am -
2 stops18h 25m
Fri 9/181:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,311
This Ovago deal was found by Cheapflights users on 8/5. 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.
Mon 8/3111:54 pm -
2 stops48h 36m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/5![Multiple Airlines logo]()
$1,433
This Cheapflightsfares deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:40 pm -
2 stops29h 40m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/2![Iberia logo]()
$1,360
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:15 am -
2 stops18h 25m
Sat 9/191:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,361
Last-minute flights from Denver to San SebastianDiscover last-minute flight deals from Denver to San Sebastian. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Sebastian. Data last updated August 6, 2026 and is based on user searches.
This Travelocity deal was found by Cheapflights users on 8/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:40 pm -
2 stops30h 00m
Fri 9/189:20 am -
2 stops42h 18m
Deal found 8/2![Iberia logo]()
$1,023
This American Airlines deal was found by Cheapflights users on 8/2. 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 8/3010:29 am -
2 stops38h 11m
Thu 9/179:20 am -
2 stops22h 31m
Deal found 8/2![American Airlines logo]()
$1,248
This American Airlines deal was found by Cheapflights users on 8/2. 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 8/3010:29 am -
2 stops38h 11m
Sat 9/191:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,298
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:15 am -
2 stops18h 25m
Fri 9/181:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,311
This Cheapflightsfares deal was found by Cheapflights users on 8/1. 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.
Mon 8/316:40 pm -
2 stops29h 40m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/1![Iberia logo]()
$1,360
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 8/316:15 am -
2 stops18h 25m
Sat 9/191:40 pm -
2 stops26h 30m
Deal found 8/2![American Airlines logo]()
$1,361
This Ovago deal was found by Cheapflights users on 8/5. 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.
Mon 8/3111:54 pm -
2 stops48h 36m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/5![Multiple Airlines logo]()
$1,433
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:37 pm -
2 stops48h 43m
Sun 9/209:30 pm -
2 stops28h 45m
Deal found 8/4![Multiple Airlines logo]()
$1,260
One-way flights from Denver to San SebastianSearch for one-way flight options from Denver to San Sebastian. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Denver to San Sebastian. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:40 pm -
3 stops31h 40m
Deal found 8/5![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:40 pm -
3 stops31h 40m
Deal found 8/5![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:40 pm -
3 stops31h 40m
Deal found 8/5![Multiple Airlines logo]()
$419
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 August 6, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $929 (Expedia) |
One-way from | $395 (Kiwi.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 2,558,603 searches. Data last updated August 6, 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
Fri 10/23
6:35 pm-8:50 pm
2 stops18h 15m
San Sebastián
Mon 10/26
9:30 pm-10:58 pm
2 stops32h 28m
$929
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sun 8/30
6:40 pm-8:40 am
2 stops30h 00m
San Sebastián
Fri 9/18
9:20 am-7:38 pm
2 stops42h 18m
$1,023
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sun 8/30
10:29 am-8:40 am
2 stops38h 11m
San Sebastián
Thu 9/17
9:20 am-11:51 pm
2 stops22h 31m
$1,248
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Tue 9/1
11:37 pm-8:20 am
2 stops48h 43m
San Sebastián
Sun 9/20
9:30 pm-6:15 pm
2 stops28h 45m
$1,260
Quickest round-trip
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 8/31
6:15 am-8:40 am
2 stops18h 25m
San Sebastián
Fri 9/18
1:40 pm-8:10 am
2 stops26h 30m
$1,311
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 8/31
6:40 pm-8:20 am
2 stops29h 40m
San Sebastián
Sun 9/20
9:30 pm-6:15 pm
2 stops28h 45m
$1,360
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 8/31
6:15 am-8:40 am
2 stops18h 25m
San Sebastián
Sat 9/19
1:40 pm-8:10 am
2 stops26h 30m
$1,361
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 8/31
11:54 pm-8:30 am
2 stops48h 36m
San Sebastián
Sun 9/20
9:30 pm-6:15 pm
2 stops28h 45m
$1,433
Cheapest one-way
Quickest one-way
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Mon 9/28
4:40 pm-8:20 am
3 stops31h 40m
$395
DenverSan Sebastian
DEN Denver Intl - EAS San Sebastián
DENEAS
Denver Intl
Sun 9/27
4:40 pm-8:20 am
3 stops31h 40m
$419
Showing 1-10 of 11 resultsSorted 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 August.
| 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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