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Keflavik Intl

$334+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — KEF
may. 25 — jun. 11
dom. 5/25
dom. 6/1
1 adult, Economy
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Cheap 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 mayo 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$620
(United Airlines)

One-way from

$334
(Kiwi.com)

Popular in

May

Cheapest in

April

Average price

$1,212
Provider with most accurate pricing for San Antonio-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for San Antonio-Reykjavik Keflavik Intl flights.
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From San Antonio to Reykjavik Keflavik Intl
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One-way flight from San Antonio to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 7% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 mayo 20, 2025.

This United Airlines deal was found by Cheapflights users on 5/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:15 amSAT - KEF
2 stops19h 55mUnited Airlines
mar. 9/29:50 amKEF - SAT
2 stops29h 47mUnited Airlines
Deal found 5/19$620
This Booking.com deal was found by Cheapflights users on 5/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/246:48 amSAT - KEF
2 stops20h 27mAir Canada
vie. 9/59:30 amKEF - SAT
2 stops34h 55mAir Canada
Deal found 5/19$634
This KLM deal was found by Cheapflights users on 5/20. 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.
mié. 9/32:40 pmSAT - KEF
1 stop11h 20mMultiple Airlines
mié. 9/108:45 amKEF - SAT
1 stop19h 33mMultiple Airlines
Deal found 5/20$636
This Lufthansa deal was found by Cheapflights users on 5/19. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/225:08 pmSAT - KEF
2 stops26h 02mLufthansa
jue. 11/63:10 pmKEF - SAT
2 stops37h 58mLufthansa
Deal found 5/19$640
This KLM deal was found by Cheapflights users on 5/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/163:30 pmSAT - KEF
1 stop9h 50mKLM
sáb. 8/239:30 amKEF - SAT
1 stop16h 39mKLM
Deal found 5/19$699
This Delta deal was found by Cheapflights users on 5/20. 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.
lun. 6/212:08 pmSAT - KEF
2 stops13h 12mDelta
mié. 6/188:50 amKEF - SAT
1 stop18h 21mDelta
Deal found 5/20$808
This British Airways deal was found by Cheapflights users on 5/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/211:25 pmSAT - KEF
2 stops39h 15mBritish Airways
lun. 11/311:45 amKEF - SAT
2 stops41h 45mBritish Airways
Deal found 5/19$846
This Finnair deal was found by Cheapflights users on 5/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/182:39 pmSAT - KEF
2 stops36h 36mFinnair
sáb. 11/2910:00 amKEF - SAT
2 stops37h 50mFinnair
Deal found 5/19$949
This Alaska Airlines deal was found by Cheapflights users on 5/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/246:40 amSAT - KEF
2 stops18h 15mAlaska Airlines
mar. 11/45:05 pmKEF - SAT
1 stop30h 53mAlaska Airlines
Deal found 5/19$1,199
This Air France deal was found by Cheapflights users on 5/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/196:25 amSAT - KEF
1 stop19h 35mAir France
dom. 6/298:50 amKEF - SAT
1 stop18h 21mAir France
Deal found 5/19$1,250
This Scandinavian Airlines deal was found by Cheapflights users on 5/19. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/42:49 pmSAT - KEF
2 stops28h 01mScandinavian Airlines
jue. 7/101:00 amKEF - SAT
3 stops28h 14mScandinavian Airlines
Deal found 5/19$1,740

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 mayo 20, 2025.
Use the filters below to find and compare flights from San Antonio to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

San Antonio

Fly to

Keflavik Intl

Route

Depart

Return

Price

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

mié. 8/27

7:15 am-8:10 am

2 stops19h 55m

Reykjavik Keflavik Intl

mar. 9/2

9:50 am-10:37 am

2 stops29h 47m

$620

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

dom. 8/24

6:48 am-8:15 am

2 stops20h 27m

Reykjavik Keflavik Intl

vie. 9/5

9:30 am-3:25 pm

2 stops34h 55m

$634

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

mié. 9/3

2:40 pm-7:00 am

1 stop11h 20m

Reykjavik Keflavik Intl

mié. 9/10

8:45 am-11:18 pm

1 stop19h 33m

$636

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

mié. 10/22

5:08 pm-12:10 am

2 stops26h 02m

Reykjavik Keflavik Intl

jue. 11/6

3:10 pm-11:08 pm

2 stops37h 58m

$640

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

sáb. 8/16

3:30 pm-6:20 am

1 stop9h 50m

Reykjavik Keflavik Intl

sáb. 8/23

9:30 am-9:09 pm

1 stop16h 39m

$699

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

lun. 6/2

12:08 pm-6:20 am

2 stops13h 12m

Reykjavik Keflavik Intl

mié. 6/18

8:50 am-10:11 pm

1 stop18h 21m

$808

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

mar. 10/21

1:25 pm-9:40 am

2 stops39h 15m

Reykjavik Keflavik Intl

lun. 11/3

11:45 am-11:30 pm

2 stops41h 45m

$846

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

vie. 10/24

6:40 am-5:55 am

2 stops18h 15m

Reykjavik Keflavik Intl

mar. 11/4

5:05 pm-5:58 pm

1 stop30h 53m

$1,199

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

jue. 6/19

6:25 am-7:00 am

1 stop19h 35m

Reykjavik Keflavik Intl

dom. 6/29

8:50 am-10:11 pm

1 stop18h 21m

$1,250

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

sáb. 10/25

2:42 pm-9:15 am

2 stops37h 33m

Reykjavik Keflavik Intl

lun. 11/3

10:00 am-5:50 pm

2 stops37h 50m

$1,558

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 14 results
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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Antonio-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from San Antonio to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from San Antonio to Reykjavik Keflavik Intl Airport (average of $328). Flying from San Antonio to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $653). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAT to KEF?

Find hourly flight availability from San Antonio to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 20, 2025.

When flying from San Antonio to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 9% versus a flight at noon.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 mayo 20, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
KLM
7.8
Good
1,346 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Finnair
7.6
Good
1,282 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Air France
7.4
Good
1,451 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 3 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

  • What are the cheapest airlines flying from San Antonio to Reykjavik Keflavik Intl Airport round-trip?

    Cheapflights users have booked flights from San Antonio to Reykjavik Keflavik Intl Airport round-trip from $620. Other airlines that can offer you cheap pricing are Air Canada, from $634, and Lufthansa, from $640. United Airlines is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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.

  • What is the cheapest month to book a flight from San Antonio to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from San Antonio to Reykjavik Keflavik Intl Airport (average of $328). Flying from San Antonio to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $653). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from San Antonio to Keflavik Intl

Discover the top 3 airlines 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 mayo 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$474Average$900FlexibilityNo cancel feeOn-time75%
DeltaCheapest$590Average$816FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$635Average$894FlexibilityNo cancel feeOn-time69%

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