$579+ Cheap flights from San Antonio (SAT) to Keflavik Intl (KEF)
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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — KEF
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Keflavik Intl with Cheapflights
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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 San Antonio to Keflavik Intl
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Best
Last-minute
One-way
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 March 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 March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 5/267:54 pm
SAT
- KEF
1 stop32h 31m
Multiple Airlines
Tue 6/210:45 am
KEF
- SAT
1 stop13h 14m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$706
This Virgin Atlantic deal was found by Cheapflights users on 3/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:18 pm
SAT
- KEF
1 stop16h 12m
Virgin Atlantic
Sat 5/211:25 am
KEF
- SAT
1 stop15h 27m
Virgin Atlantic
Deal found 3/11![Virgin Atlantic logo]()
$724
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/46:07 am
SAT
- KEF
2 stops19h 33m
Multiple Airlines
Sat 5/94:45 pm
KEF
- SAT
1 stop21h 10m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$756
This Finnair deal was found by Cheapflights users on 3/11. 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 9/78:36 pm
SAT
- KEF
2 stops38h 54m
Multiple Airlines
Tue 9/155:15 pm
KEF
- SAT
2 stops35h 06m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$825
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 9/76:40 am
SAT
- KEF
1 stop21h 10m
United Airlines
Tue 9/1510:00 am
KEF
- SAT
2 stops31h 11m
United Airlines
Deal found 3/11![United Airlines logo]()
$838
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 12/212:55 pm
SAT
- KEF
2 stops22h 20m
Multiple Airlines
Wed 12/911:50 am
KEF
- SAT
2 stops27h 44m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$852
This KLM deal was found by Cheapflights users on 3/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:30 am
SAT
- KEF
1 stop20h 10m
Multiple Airlines
Sat 8/298:50 am
KEF
- SAT
1 stop19h 22m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$863
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 March 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 March 15, 2026.
This Finnair deal was found by Cheapflights users on 3/11. 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 9/78:36 pm
SAT
- KEF
2 stops38h 54m
Multiple Airlines
Tue 9/155:15 pm
KEF
- SAT
2 stops35h 06m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$825
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 9/75:24 pm
SAT
- KEF
1 stop10h 26m
United Airlines
Tue 9/1511:30 am
KEF
- SAT
1 stop14h 07m
United Airlines
Deal found 3/11![United Airlines logo]()
$853
This KLM deal was found by Cheapflights users on 3/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:35 pm
SAT
- KEF
1 stop12h 05m
KLM
Sun 5/178:50 am
KEF
- SAT
1 stop12h 02m
KLM
Deal found 3/13![KLM logo]()
$955
This KLM deal was found by Cheapflights users on 3/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:30 am
SAT
- KEF
1 stop20h 10m
Multiple Airlines
Sat 8/299:30 am
KEF
- SAT
1 stop16h 58m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$864
This United Airlines deal was found by Cheapflights users on 3/12. 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 8/165:24 pm
SAT
- KEF
1 stop10h 26m
United Airlines
Sat 8/2912:00 pm
KEF
- SAT
1 stop15h 55m
United Airlines
Deal found 3/12![United Airlines logo]()
$905
This United Airlines deal was found by Cheapflights users on 3/13. 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 9/68:53 am
SAT
- KEF
2 stops18h 37m
United Airlines
Sun 9/1311:30 am
KEF
- SAT
2 stops17h 19m
United Airlines
Deal found 3/13![United Airlines logo]()
$905
This Icelandair deal was found by Cheapflights users on 3/11. 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 5/284:30 pm
SAT
- KEF
1 stop11h 40m
Multiple Airlines
Thu 6/47:50 pm
KEF
- SAT
1 stop21h 00m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$921
Last-minute flights from San Antonio to Keflavik IntlDiscover last-minute flight deals from San Antonio to Keflavik Intl. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Keflavik Intl. Data last updated March 15, 2026 and is based on user searches.
This Icelandair deal was found by Cheapflights users on 3/11. 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.
Sun 3/155:00 am
SAT
- KEF
1 stop20h 15m
Multiple Airlines
Tue 3/175:00 pm
KEF
- SAT
1 stop24h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$2,073
This Icelandair deal was found by Cheapflights users on 3/14. 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.
Mon 4/134:30 pm
SAT
- KEF
1 stop32h 55m
Multiple Airlines
Mon 4/204:50 pm
KEF
- SAT
1 stop24h 05m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$1,005
This Virgin Atlantic deal was found by Cheapflights users on 3/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:18 pm
SAT
- KEF
1 stop16h 12m
Virgin Atlantic
Sat 5/211:25 am
KEF
- SAT
1 stop15h 27m
Virgin Atlantic
Deal found 3/11![Virgin Atlantic logo]()
$724
This British Airways deal was found by Cheapflights users on 3/11. 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 4/258:31 pm
SAT
- KEF
2 stops56h 24m
British Airways
Wed 4/2911:00 am
KEF
- SAT
2 stops40h 52m
British Airways
Deal found 3/11![British Airways logo]()
$2,043
This British Airways deal was found by Cheapflights users on 3/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:28 pm
SAT
- KEF
2 stops36h 32m
British Airways
Fri 5/110:30 am
KEF
- SAT
2 stops18h 26m
British Airways
Deal found 3/13![British Airways logo]()
$2,051
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 March 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 March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Mon 6/2911:30 am
SAT
- KEF
3 stops37h 35m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$579
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Fri 6/197:26 pm
SAT
- KEF
2 stops32h 34m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$635
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Fri 8/2811:50 am
SAT
- KEF
2 stops15h 40m
United Airlines
Deal found 3/14![United Airlines logo]()
$640
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $706 (Kiwi.com) |
One-way from | $579 (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 2,558,603 searches. Data last updated March 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 - KEF
SATKEF
San Antonio
Mon 9/7
8:36 pm-4:30 pm
2 stops38h 54m
Reykjavik Keflavik Intl
Tue 9/15
5:15 pm-11:21 pm
2 stops35h 06m
$825
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Mon 9/7
5:24 pm-8:50 am
1 stop10h 26m
Reykjavik Keflavik Intl
Tue 9/15
11:30 am-8:37 pm
1 stop14h 07m
$853
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Sun 8/16
6:30 am-7:40 am
1 stop20h 10m
Reykjavik Keflavik Intl
Sat 8/29
9:30 am-9:28 pm
1 stop16h 58m
$864
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Sun 8/16
5:24 pm-8:50 am
1 stop10h 26m
Reykjavik Keflavik Intl
Sat 8/29
12:00 pm-10:55 pm
1 stop15h 55m
$905
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Sun 9/6
8:53 am-8:30 am
2 stops18h 37m
Reykjavik Keflavik Intl
Sun 9/13
11:30 am-11:49 pm
2 stops17h 19m
$905
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Thu 5/28
4:30 pm-9:10 am
1 stop11h 40m
Reykjavik Keflavik Intl
Thu 6/4
7:50 pm-11:50 am
1 stop21h 00m
$921
Quickest round-trip
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Tue 5/12
2:35 pm-7:40 am
1 stop12h 05m
Reykjavik Keflavik Intl
Sun 5/17
8:50 am-3:52 pm
1 stop12h 02m
$955
Cheapest one-way
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Mon 6/29
6:35 pm-6:35 am
1 stop31h 00m
$634
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Fri 6/19
7:26 pm-9:00 am
2 stops32h 34m
$635
Quickest one-way
San AntonioReykjavik
SAT - KEF
SATKEF
San Antonio
Fri 8/28
11:50 am-8:30 am
2 stops15h 40m
$640
Sorted 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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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.
Reviews of airlines servicing Keflavik Intl
Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated March 15, 2026.
Get a feel of what it's like to fly with Delta from San Antonio to Reykjavik Keflavik Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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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Other flights to Keflavik Intl
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 15, 2026.
San Antonio and Keflavik Intl flights
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Top airline flying from San Antonio to Keflavik Intl
Discover the top airline that operate flights from San Antonio to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$628 | Average$978 | FlexibilityNo cancel fee | On-timeN/A |