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Keflavik Intl

$256+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — KEF
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$566
(United Airlines)

One-way from

$256
(Mytrip)

Popular in

May

Cheapest in

April

Average price

$981
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. 1% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 9/31:20 pmSAT - KEF
1 stop12h 40mUnited Airlines
Wed 9/109:30 amKEF - SAT
2 stops35h 48mUnited Airlines
Deal found 7/30$566
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/285:30 amSAT - KEF
2 stops21h 40mAir Canada
Tue 9/99:50 amKEF - SAT
2 stops17h 58mAir Canada
Deal found 7/31$591
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sat 8/304:49 pmSAT - KEF
3 stops30h 56mMultiple Airlines
Sat 9/63:05 pmKEF - SAT
2 stops27h 44mMultiple Airlines
Deal found 7/31$649
This KLM deal was found by Cheapflights users on 7/31. 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.
Wed 9/311:33 amSAT - KEF
1 stop16h 57mKLM
Wed 9/108:45 amKEF - SAT
1 stop11h 56mKLM
Deal found 7/31$714
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:09 pmSAT - KEF
2 stops49h 26mLufthansa
Fri 10/312:25 amKEF - SAT
2 stops24h 40mLufthansa
Deal found 7/30$810
This Scandinavian Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 9/273:00 pmSAT - KEF
2 stops20h 20mScandinavian Airlines
Thu 10/25:10 pmKEF - SAT
2 stops35h 49mScandinavian Airlines
Deal found 7/31$845
This Delta deal was found by Cheapflights users on 7/30. 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.
Fri 9/2611:35 amSAT - KEF
1 stop16h 55mDelta
Sat 10/411:25 amKEF - SAT
1 stop28h 15mDelta
Deal found 7/30$884

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 July 31, 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

Wed 9/3

1:20 pm-7:00 am

1 stop12h 40m

Reykjavik Keflavik Intl

Wed 9/10

9:30 am-4:18 pm

2 stops35h 48m

$566

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Thu 8/28

5:30 am-8:10 am

2 stops21h 40m

Reykjavik Keflavik Intl

Tue 9/9

9:50 am-10:48 pm

2 stops17h 58m

$591

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Sat 8/30

4:49 pm-4:45 am

3 stops30h 56m

Reykjavik Keflavik Intl

Sat 9/6

3:05 pm-1:49 pm

2 stops27h 44m

$649

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Wed 9/3

11:33 am-9:30 am

1 stop16h 57m

Reykjavik Keflavik Intl

Wed 9/10

8:45 am-3:41 pm

1 stop11h 56m

$714

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Fri 9/26

5:09 pm-11:35 pm

2 stops49h 26m

Reykjavik Keflavik Intl

Fri 10/3

12:25 am-8:05 pm

2 stops24h 40m

$810

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Sat 9/27

3:00 pm-4:20 pm

2 stops20h 20m

Reykjavik Keflavik Intl

Thu 10/2

5:10 pm-11:59 pm

2 stops35h 49m

$845

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Fri 9/26

11:35 am-9:30 am

1 stop16h 55m

Reykjavik Keflavik Intl

Sat 10/4

11:25 am-10:40 am

1 stop28h 15m

$884

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Thu 8/28

4:50 pm-4:45 am

2 stops30h 55m

$256

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Tue 8/26

2:10 pm-8:15 am

2 stops37h 05m

$574

San AntonioReykjavik

SAT - KEF

SATKEF

San Antonio

Fri 9/5

12:57 pm-8:30 am

1 stop14h 33m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 11 results
1
2

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.

How much does it cost to fly round-trip from San Antonio to Reykjavik Keflavik Intl Airport?

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 July 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Air France 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.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $566. Other airlines that can offer you cheap pricing are Air Canada, from $591, and KLM, from $714. United Airlines is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Antonio to Reykjavik Keflavik Intl Airport one-way?

    One-way options have recently been found by users for as low as $574 on WestJet. Other airlines that offer cheap prices include United Airlines from $600 and Air France from $631 one-way.

  • 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

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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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$474Average$808FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$636Average$954FlexibilityNo cancel feeOn-time69%
DeltaCheapest$732Average$982FlexibilityNo cancel feeOn-timeN/A

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