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Keflavik Intl

$465+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — KEF
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from San Antonio to Keflavik Intl

Cheapest flights from San Antonio to Keflavik Intl
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 August 1, 2026.

This United deal was found by Cheapflights users on 7/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am
SAT
-
KEF
1 stop20h 30m
Multiple Airlines
Wed 10/79:15 am
KEF
-
SAT
2 stops16h 58m
Multiple Airlines
Deal found 7/28$797
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/2112:10 pm
SAT
-
KEF
2 stops13h 50m
United Airlines
Wed 10/79:15 am
KEF
-
SAT
2 stops16h 23m
United Airlines
Deal found 7/28$799
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:30 pm
SAT
-
KEF
1 stop11h 30m
Delta
Wed 10/711:25 am
KEF
-
SAT
1 stop29h 53m
Delta
Deal found 7/28$802
This United Airlines deal was found by Cheapflights users on 7/27. 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 11/54:19 pm
SAT
-
KEF
3 stops35h 41m
United Airlines
Thu 11/1212:00 pm
KEF
-
SAT
2 stops15h 26m
United Airlines
Deal found 7/27$821
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/278:26 pm
SAT
-
KEF
1 stop28h 34m
Multiple Airlines
Thu 9/310:45 am
KEF
-
SAT
1 stop13h 46m
Multiple Airlines
Deal found 7/28$822
This United Airlines deal was found by Cheapflights users on 7/29. 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 10/165:30 pm
SAT
-
KEF
1 stop10h 20m
United Airlines
Fri 10/239:15 am
KEF
-
SAT
2 stops36h 15m
United Airlines
Deal found 7/29$831
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/246:00 am
SAT
-
KEF
2 stops20h 55m
United Airlines
Fri 10/29:15 am
KEF
-
SAT
2 stops42h 35m
United Airlines
Deal found 7/27$839
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/177:49 pm
SAT
-
KEF
1 stop29h 11m
Multiple Airlines
Mon 8/2410:45 am
KEF
-
SAT
1 stop13h 46m
Multiple Airlines
Deal found 7/27$842
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/245:36 am
SAT
-
KEF
2 stops21h 19m
United Airlines
Thu 10/110:00 am
KEF
-
SAT
2 stops41h 50m
United Airlines
Deal found 7/27$844

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$797
(United)

One-way from

$465
(United Airlines)
Provider with most accurate pricing for San Antonio-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Reykjavik Keflavik Intl flights.
Search Deals
From San Antonio to Reykjavik Keflavik Intl
Search Deals
One-way flight from San Antonio to Reykjavik Keflavik Intl
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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 August 1, 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

Price

Cheapest round-trip

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Fri 10/16

5:30 pm-8:50 am

1 stop10h 20m

Reykjavik Keflavik Intl

Fri 10/23

9:15 am-4:30 pm

2 stops36h 15m

$831

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Thu 9/24

2:30 pm-7:00 am

1 stop11h 30m

Reykjavik Keflavik Intl

Thu 10/1

9:30 am-9:22 pm

1 stop16h 52m

$855
Quickest round-trip

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Thu 9/24

2:30 pm-7:00 am

1 stop11h 30m

Reykjavik Keflavik Intl

Fri 10/2

9:30 am-5:10 pm

1 stop12h 40m

$856

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Thu 10/22

5:30 am-7:55 am

2 stops21h 25m

Reykjavik Keflavik Intl

Sat 10/31

12:00 pm-10:57 pm

1 stop15h 57m

$919
Cheapest one-way

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Tue 9/8

9:30 am-8:50 am

2 stops18h 20m

$465
Quickest one-way

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Tue 9/8

2:30 pm-7:00 am

1 stop11h 30m

$465

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Mon 9/7

6:30 am-7:00 am

1 stop19h 30m

$465

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Wed 9/9

7:35 am-8:50 am

2 stops20h 15m

$465

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Wed 9/9

2:30 pm-7:00 am

1 stop11h 30m

$465

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Mon 9/7

6:30 am-7:00 am

2 stops19h 30m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 August.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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.

  • What airport do you fly from for flights from San Antonio to Reykjavik Keflavik Intl?

    Most people fly from San Antonio (SAT) if they book a flight from San Antonio to Reykjavik Keflavik Intl. On average, San Antonio has 0 outbound flights to Reykjavik Keflavik Intl per day from 0 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

  • How long is the flight from San Antonio to Reykjavik Keflavik Intl Airport?

    Departing from San Antonio to Reykjavik Keflavik Intl Airport will take you 10h 20m. There are 3975 mi between San Antonio and Reykjavik Keflavik Intl Airport.

  • Can I find deals for flights from San Antonio to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on San Antonio to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Keflavik Intl.

  • Can I find deals for business class flights from San Antonio to Keflavik Intl?

    Yes. Cheapflights offers flight deals from San Antonio to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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