SAT - KEF

$603 Find Cheap Flights from San Antonio to Reykjavik

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Keflavik Intl departing on 1/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Reykjavik, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$603
Multiple Airlines
Thu 1/15Thu 2/19
SAT - KEF • 2 stops
Cheapest one-way
Multiple Airlines
Wed 12/17
SAT - KEF • multi-stop
Top airlines
Lufthansa
Cheapest • from $717 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Antonio to Keflavik Intl (SAT-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Keflavik Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to Keflavik Intl

Thu, Jan 15 - Thu, Feb 19
Multiple Airlines Logo
12:15 pm - 2:20 pm
SAT
-
KEF
20h 05m2 stops
Multiple Airlines Logo
3:10 pm - 9:15 pm
KEF
-
SAT
36h 05m2 stops
$603Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Lufthansa Logo
2:05 pm - 2:20 pm
SAT
-
KEF
42h 15m2 stops
Lufthansa Logo
3:25 pm - 9:21 pm
KEF
-
SAT
35h 56m2 stops
$617Lufthansa
Sun, Jan 25 - Sun, Feb 1
Lufthansa Logo
4:04 pm - 2:20 pm
SAT
-
KEF
40h 16m2 stops
Lufthansa Logo
3:20 pm - 8:56 pm
KEF
-
SAT
35h 36m2 stops
$717Lufthansa
Wed, Apr 1 - Fri, Apr 10
Delta Logo
6:20 am - 9:30 am
SAT
-
KEF
22h 10m2 stops
Delta Logo
11:25 am - 10:42 pm
KEF
-
SAT
16h 17m2 stops
$743Delta
Sat, Mar 28 - Sat, Apr 4
KLM Logo
6:20 am - 9:30 am
SAT
-
KEF
22h 10m2 stops
KLM Logo
11:25 am - 9:50 am
KEF
-
SAT
27h 25m2 stops
$833KLM
Sat, Mar 28 - Sun, Apr 5
Multiple Airlines Logo
6:45 am - 6:05 am
SAT
-
KEF
18h 20m1 stop
Multiple Airlines Logo
4:50 pm - 12:17 am
KEF
-
SAT
12h 27m1 stop
$891Multiple Airlines
Tue, Apr 28 - Wed, May 6
Multiple Airlines Logo
12:50 pm - 9:30 am
SAT
-
KEF
15h 40m2 stops
Multiple Airlines Logo
11:25 am - 12:14 am
KEF
-
SAT
17h 49m2 stops
$906Multiple Airlines
Wed, Apr 1 - Fri, Apr 10
Multiple Airlines Logo
5:25 am - 6:25 am
SAT
-
KEF
20h 00m1 stop
Multiple Airlines Logo
5:00 pm - 8:40 pm
KEF
-
SAT
32h 40m1 stop
$918Multiple Airlines
Sat, Mar 28 - Sat, Apr 4
KLM Logo
12:01 pm - 9:30 am
SAT
-
KEF
16h 29m1 stop
KLM Logo
11:25 am - 9:32 pm
KEF
-
SAT
15h 07m1 stop
$933KLM
Wed, Jan 14 - Wed, Jan 21
Alaska Airlines Logo
6:46 pm - 6:15 am
SAT
-
KEF
29h 29m1 stop
Alaska Airlines Logo
5:00 pm - 5:45 pm
KEF
-
SAT
30h 45m1 stop
$940Alaska Airlines
Booking Insights

KAYAK's insights & trends for San Antonio to Keflavik Intl flights

Get data-powered insights and trends into flights from San Antonio to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from San Antonio to Reykjavik?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Antonio to Reykjavik were found on Lufthansa ($717) and Delta ($743).

Which airlines fly non-stop between San Antonio and Reykjavik Keflavik Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from San Antonio to Reykjavik Keflavik Intl Airport.

There are 3 airlines that fly nonstop from San Antonio to Reykjavik Keflavik Intl Airport. They are: Delta, KLM and United Airlines. The cheapest price of all airlines flying this route was found with KLM at $474 for a round-trip flight. On average, the best prices for this route can be found at KLM.

Good to know

Cheapest flight$603
Flight from San Antonio to Reykjavik

When to book flights from San Antonio to Keflavik Intl

Are your dates flexible? Find out the best times to travel from San Antonio to Keflavik Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Antonio to Reykjavik flights

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

    In the last 3 days, the lowest price for a flight from San Antonio to Reykjavik Keflavik Intl Airport was $603 for a round-trip ticket.

  • Do I need a passport to fly between San Antonio and Reykjavik?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Antonio and on arrival in Reykjavik.

  • Which airports will I be using when flying from San Antonio to Reykjavik?

    San Antonio and Reykjavik are both served by 1 main airport. You will leave San Antonio from San Antonio and will be arriving at Reykjavik Keflavik Intl.

  • Which aircraft models fly most regularly from San Antonio to Reykjavik?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Antonio to Reykjavik?

    Star Alliance, and SkyTeam are the airline alliances operating flights between San Antonio and Reykjavik, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San Antonio to Reykjavik, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from San Antonio to Reykjavik are Delta and KLM. With an average price for the route of $996 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $808 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from San Antonio to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from San Antonio is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and KEF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Antonio to Keflavik Intl

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Antonio to Keflavik Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8009 reviews
7.3Food
8.1Boarding
7.9Comfort
8.5Crew
7.9Entertainment
Airline reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

10.0 ExcellentMargaret, Dec 2025
BOS - PIT
Read more Delta reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

A little bit more leg room in premium economy. I am 6’4”.

Everything you need to know for your flight from San Antonio to Keflavik Intl

Information on your arrival and departure airports