$613+ Cheap flights from San Antonio (SAT) to Keflavik Intl (KEF)
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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — KEF
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Keflavik Intl 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 San Antonio to Keflavik Intl
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Cheapest flights from San Antonio to Keflavik IntlExplore the most affordable flight options available from San Antonio to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from San Antonio to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:21 pm -
1 stop28h 39m
Tue 10/274:55 pm -
1 stop31h 30m
Deal found 9/14![Multiple Airlines logo]()
$613
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:20 pm -
1 stop27h 45m
Mon 11/164:55 pm -
1 stop32h 30m
Deal found 9/14![Multiple Airlines logo]()
$622
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:57 pm -
2 stops35h 03m
Thu 11/512:00 pm -
2 stops26h 29m
Deal found 9/14![United Airlines logo]()
$886
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:55 pm -
1 stop11h 15m
Thu 10/224:50 pm -
1 stop22h 15m
Deal found 9/13![Multiple Airlines logo]()
$924
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.
Thu 10/156:00 am -
2 stops20h 55m
Thu 10/2210:00 am -
2 stops34h 53m
Deal found 9/13![United Airlines logo]()
$930
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:40 pm -
1 stop11h 25m
Thu 11/55:00 pm -
1 stop24h 15m
Deal found 9/14![Multiple Airlines logo]()
$937
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/131:07 pm -
1 stop12h 53m
Thu 10/112:00 pm -
1 stop15h 50m
Deal found 9/10![United Airlines logo]()
$981
Best flights from San Antonio to Keflavik IntlDiscover carefully curated flight deals from San Antonio to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from San Antonio to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:55 pm -
2 stops36h 20m
Mon 11/1610:00 am -
2 stops39h 22m
Deal found 9/14![Multiple Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/15:30 am -
2 stops21h 25m
Wed 10/79:15 am -
2 stops31h 26m
Deal found 9/10![United Airlines logo]()
$1,025
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/192:30 pm -
1 stop11h 30m
Tue 9/299:30 am -
1 stop12h 40m
Deal found 9/10![Delta logo]()
$1,150
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:26 pm -
1 stop34h 59m
Sat 10/177:45 pm -
1 stop25h 31m
Deal found 9/10![Alaska Airlines logo]()
$1,333
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:40 pm -
1 stop11h 25m
Thu 11/55:00 pm -
1 stop24h 15m
Deal found 9/14![Multiple Airlines logo]()
$937
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:30 pm -
1 stop10h 20m
Thu 10/112:00 pm -
1 stop15h 50m
Deal found 9/10![United Airlines logo]()
$1,041
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 10/42:00 pm -
1 stop13h 50m
Mon 10/1212:00 pm -
2 stops40h 58m
Deal found 9/13![United Airlines logo]()
$1,061
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:05 pm -
1 stop15h 20m
Wed 10/75:10 pm -
1 stop28h 10m
Deal found 9/13![Multiple Airlines logo]()
$1,288
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.
Fri 10/97:00 am -
2 stops20h 50m
Thu 10/1512:00 pm -
1 stop15h 50m
Deal found 9/13![United Airlines logo]()
$1,233
Last-minute flights from San Antonio to Keflavik IntlDiscover last-minute flight deals from San Antonio to Keflavik Intl. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Keflavik Intl. Data last updated September 15, 2026 and is based on user searches.
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:00 pm -
1 stop14h 50m
Thu 10/112:00 pm -
1 stop15h 50m
Deal found 9/10![United Airlines logo]()
$981
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:30 pm -
1 stop11h 30m
Tue 9/299:30 am -
1 stop12h 40m
Deal found 9/10![Delta logo]()
$995
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/15:30 am -
2 stops21h 25m
Wed 10/79:15 am -
2 stops31h 26m
Deal found 9/10![United Airlines logo]()
$1,025
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.
Fri 10/26:35 am -
1 stop21h 15m
Fri 10/99:15 am -
2 stops42h 35m
Deal found 9/13![United Airlines logo]()
$1,021
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:55 pm -
1 stop11h 15m
Thu 10/224:50 pm -
1 stop22h 15m
Deal found 9/13![Multiple Airlines logo]()
$924
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.
Thu 10/156:00 am -
2 stops20h 55m
Thu 10/2210:00 am -
2 stops34h 53m
Deal found 9/13![United Airlines logo]()
$930
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:21 pm -
1 stop28h 39m
Tue 10/274:55 pm -
1 stop31h 30m
Deal found 9/14![Multiple Airlines logo]()
$613
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:57 pm -
2 stops35h 03m
Thu 11/512:00 pm -
2 stops26h 29m
Deal found 9/14![United Airlines logo]()
$886
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:40 pm -
1 stop11h 25m
Thu 11/55:00 pm -
1 stop24h 15m
Deal found 9/14![Multiple Airlines logo]()
$937
One-way flights from San Antonio to Keflavik IntlSearch for one-way flight options from San Antonio to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from San Antonio to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:26 pm -
2 stops31h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$2,174
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:29 pm -
2 stops31h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$2,509
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/256:35 am -
3 stops22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$2,624
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Tue 10/275:26 pm -
2 stops31h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$2,813
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/286:45 am -
3 stops45h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$2,926
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/305:29 pm -
3 stops34h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$4,845
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/291:17 pm -
3 stops38h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$6,345
This American Airlines deal was found by Cheapflights users on 9/10. 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 9/284:27 pm -
2 stops36h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$8,045
Find flight deals from San Antonio to Keflavik Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Keflavik Intl (KEF). 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 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $613 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Keflavik Intl 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 15, 2026.
Use the filters below to find and compare flights from San Antonio to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Tue 11/10
2:55 pm-9:15 am
2 stops36h 20m
Reykjavik Keflavik Intl
Mon 11/16
10:00 am-7:22 pm
2 stops39h 22m
$749
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Thu 10/29
1:40 pm-6:05 am
1 stop11h 25m
Reykjavik Keflavik Intl
Thu 11/5
5:00 pm-11:15 am
1 stop24h 15m
$937
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Thu 10/1
5:30 am-7:55 am
2 stops21h 25m
Reykjavik Keflavik Intl
Wed 10/7
9:15 am-11:41 am
2 stops31h 26m
$1,025
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Fri 9/18
5:30 pm-8:50 am
1 stop10h 20m
Reykjavik Keflavik Intl
Thu 10/1
12:00 pm-10:50 pm
1 stop15h 50m
$1,041
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Sun 10/4
2:00 pm-8:50 am
1 stop13h 50m
Reykjavik Keflavik Intl
Mon 10/12
12:00 pm-11:58 pm
2 stops40h 58m
$1,061
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Sat 9/19
2:30 pm-7:00 am
1 stop11h 30m
Reykjavik Keflavik Intl
Tue 9/29
9:30 am-5:10 pm
1 stop12h 40m
$1,150
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Fri 10/9
7:00 am-8:50 am
2 stops20h 50m
Reykjavik Keflavik Intl
Thu 10/15
12:00 pm-10:50 pm
1 stop15h 50m
$1,233
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Thu 10/1
1:05 pm-9:25 am
1 stop15h 20m
Reykjavik Keflavik Intl
Wed 10/7
5:10 pm-4:20 pm
1 stop28h 10m
$1,288
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Tue 10/13
5:26 pm-9:25 am
1 stop34h 59m
Reykjavik Keflavik Intl
Sat 10/17
7:45 pm-4:16 pm
1 stop25h 31m
$1,333
San AntonioReykjavik
SAT San Antonio - KEF Reykjavik Keflavik Intl
SATKEF
San Antonio
Mon 10/26
5:26 pm-6:15 am
2 stops31h 49m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$2,174
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from San Antonio to Keflavik Intl
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 San Antonio to Keflavik Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Antonio-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-Reykjavik Keflavik Intl Airport 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 San Antonio-Reykjavik Keflavik Intl Airport 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 San Antonio to Keflavik Intl
Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from San Antonio with our price prediction graph.
SAT-KEF
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 San Antonio to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
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