$394+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EAS
Jul 20 — Jul 271
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
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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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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 June 20, 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 June 20, 2026.
This Finnair deal was found by Cheapflights users on 6/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:22 am
DEN
- EAS
2 stops21h 38m
Multiple Airlines
Tue 11/179:20 am
EAS
- DEN
2 stops21h 41m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$841
This Expedia deal was found by Cheapflights users on 6/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:40 pm
DEN
- EAS
2 stops30h 00m
Iberia
Tue 9/155:55 pm
EAS
- DEN
2 stops30h 35m
Iberia
Deal found 6/17![Iberia logo]()
$940
This Travelocity deal was found by Cheapflights users on 6/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:15 pm
DEN
- EAS
2 stops33h 25m
Iberia
Sun 9/209:30 pm
EAS
- DEN
2 stops31h 05m
Iberia
Deal found 6/16![Iberia logo]()
$1,002
This Orbitz deal was found by Cheapflights users on 6/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:40 pm
DEN
- EAS
2 stops30h 00m
Iberia
Sun 9/209:30 pm
EAS
- DEN
2 stops51h 00m
Iberia
Deal found 6/18![Iberia logo]()
$1,040
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Tue 9/18:10 pm
DEN
- EAS
3 stops28h 20m
Multiple Airlines
Tue 9/155:55 pm
EAS
- DEN
3 stops29h 45m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,091
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:10 pm
DEN
- EAS
3 stops28h 20m
Multiple Airlines
Sun 9/208:55 am
EAS
- DEN
2 stops34h 25m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,097
This Expedia deal was found by Cheapflights users on 6/18. 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 7/176:35 pm
DEN
- EAS
2 stops29h 45m
Iberia
Thu 7/239:30 pm
EAS
- DEN
2 stops34h 47m
Iberia
Deal found 6/18![Iberia logo]()
$1,121
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 June 20, 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 June 20, 2026.
This Finnair deal was found by Cheapflights users on 6/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:22 am
DEN
- EAS
2 stops21h 38m
Multiple Airlines
Tue 11/179:20 am
EAS
- DEN
2 stops21h 41m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$841
This Expedia deal was found by Cheapflights users on 6/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:40 pm
DEN
- EAS
2 stops30h 00m
Iberia
Tue 9/155:55 pm
EAS
- DEN
2 stops30h 35m
Iberia
Deal found 6/17![Iberia logo]()
$940
This American Airlines deal was found by Cheapflights users on 6/19. 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
DEN
- EAS
2 stops18h 25m
American Airlines
Sun 9/209:20 am
EAS
- DEN
2 stops22h 57m
American Airlines
Deal found 6/19![American Airlines logo]()
$1,262
This Travelocity deal was found by Cheapflights users on 6/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:40 pm
DEN
- EAS
2 stops30h 00m
Iberia
Sun 9/209:30 pm
EAS
- DEN
2 stops34h 47m
Iberia
Deal found 6/15![Iberia logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Tue 9/18:10 pm
DEN
- EAS
3 stops28h 20m
Multiple Airlines
Tue 9/155:55 pm
EAS
- DEN
3 stops29h 45m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,091
This Travelocity deal was found by Cheapflights users on 6/19. 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.
Mon 8/3112:39 pm
DEN
- EAS
2 stops36h 01m
Iberia
Sun 9/209:30 pm
EAS
- DEN
2 stops51h 00m
Iberia
Deal found 6/19![Iberia logo]()
$1,051
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Tue 9/18:10 pm
DEN
- EAS
3 stops28h 20m
Multiple Airlines
Sun 9/208:55 am
EAS
- DEN
2 stops34h 25m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,199
Last-minute flights from Denver to San SebastianDiscover last-minute flight deals from Denver to San Sebastian. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Sebastian. Data last updated June 20, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 6/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:39 pm
DEN
- EAS
2 stops36h 01m
Multiple Airlines
Thu 6/259:05 am
EAS
- DEN
2 stops21h 28m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$1,659
This Expedia deal was found by Cheapflights users on 6/18. 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 7/176:35 pm
DEN
- EAS
2 stops29h 45m
Iberia
Thu 7/239:30 pm
EAS
- DEN
2 stops34h 47m
Iberia
Deal found 6/18![Iberia logo]()
$1,121
This Mytrip deal was found by Cheapflights users on 6/18. 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.
Fri 7/174:40 pm
DEN
- EAS
3 stops31h 40m
Multiple Airlines
Thu 7/235:55 pm
EAS
- DEN
3 stops32h 20m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$1,760
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 June 20, 2026.
Search for one-way flight options from Denver to San Sebastian. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 9/194:40 pm
DEN
- EAS
3 stops31h 40m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$394
This Orbitz deal was found by Cheapflights users on 6/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:51 pm
DEN
- EAS
2 stops55h 49m
Iberia
Deal found 6/18![Iberia logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:40 pm
DEN
- EAS
3 stops31h 40m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$469
This Iberia deal was found by Cheapflights users on 6/16. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:47 am
DEN
- EAS
2 stops22h 48m
Iberia
Deal found 6/16![Iberia logo]()
$757
This Orbitz deal was found by Cheapflights users on 6/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:16 am
DEN
- EAS
2 stops29h 34m
Iberia
Deal found 6/17![Iberia logo]()
$1,000
This BusinessClass deal was found by Cheapflights users on 6/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:27 pm
DEN
- EAS
2 stops34h 13m
Finnair
Deal found 6/19![Finnair logo]()
$1,238
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Wed 9/911:06 am
DEN
- EAS
3 stops37h 14m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$1,333
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 June 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $841 (Finnair) |
One-way from | $394 (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 June 20, 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 - EAS
DENEAS
Denver Intl
Wed 11/4
7:22 am-1:00 pm
2 stops21h 38m
San Sebastián
Tue 11/17
9:20 am-11:01 pm
2 stops21h 41m
$841
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Tue 9/1
6:40 pm-8:40 am
2 stops30h 00m
San Sebastián
Tue 9/15
5:55 pm-4:30 pm
2 stops30h 35m
$940
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Tue 9/1
6:40 pm-8:40 am
2 stops30h 00m
San Sebastián
Sun 9/20
9:30 pm-12:17 am
2 stops34h 47m
$1,047
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Mon 8/31
12:39 pm-8:40 am
2 stops36h 01m
San Sebastián
Sun 9/20
9:30 pm-4:30 pm
2 stops51h 00m
$1,051
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Tue 9/1
8:10 pm-8:30 am
3 stops28h 20m
San Sebastián
Tue 9/15
5:55 pm-3:40 pm
3 stops29h 45m
$1,091
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Tue 9/1
8:10 pm-8:30 am
3 stops28h 20m
San Sebastián
Sun 9/20
8:55 am-11:20 am
2 stops34h 25m
$1,199
Quickest round-trip
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Mon 8/31
6:15 am-8:40 am
2 stops18h 25m
San Sebastián
Sun 9/20
9:20 am-12:17 am
2 stops22h 57m
$1,262
Cheapest one-way
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Sat 9/19
4:40 pm-8:20 am
3 stops31h 40m
$394
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Sat 9/19
4:51 pm-8:40 am
2 stops55h 49m
$423
DenverSan Sebastian
DEN - EAS
DENEAS
Denver Intl
Thu 7/2
4:40 pm-8:20 am
3 stops31h 40m
$469
Showing 1-10 of 13 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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-San Sebastian flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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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