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STL - KEF

Find cheap flights from St. Louis to Reykjavik from $324

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Reykjavik departing on 6/20. 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
0 bags
Sun 5/19
Sun 5/26

Search hundreds of travel sites at once for deals on flights to Reykjavik

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis 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 St. Louis to Reykjavik, as well as popular online travel agencies
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from St. Louis to Reykjavik (STL-KEF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Reykjavik 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 and deals for you by selecting your travel dates.
Choose your dates
2:05 pm - 6:20 amSTL-KEF
11h 15m1 stop
8:50 am - 8:51 amKEF-STL
29h 01m2 stops
$645Delta
Find Deal
Mon, Oct 14 - Mon, Oct 21
10:10 am - 8:30 amSTL-KEF
17h 20m1 stop
12:00 pm - 9:49 pmKEF-STL
14h 49m1 stop
$646United Airlines
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Wed, May 15 - Wed, May 22
10:10 am - 8:30 amSTL-KEF
17h 20m1 stop
12:00 pm - 9:53 amKEF-STL
26h 53m2 stops
$650United Airlines
Find Deal
Wed, May 15 - Wed, May 22
9:50 am - 11:20 pmSTL-KEF
32h 30m2 stops
12:10 am - 9:05 pmKEF-STL
25h 55m2 stops
Wed, May 15 - Tue, May 21
10:10 am - 6:20 amSTL-KEF
15h 10m1 stop
8:50 am - 8:31 pmKEF-STL
16h 41m1 stop
$690Delta
Find Deal
Mon, Oct 14 - Mon, Oct 21
5:40 pm - 7:00 amSTL-KEF
8h 20m1 stop
9:30 am - 4:49 pmKEF-STL
12h 19m1 stop
$701Air France
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Sat, Aug 17 - Sat, Aug 24
12:00 pm - 8:35 amSTL-KEF
15h 35m1 stop
10:00 am - 3:21 pmKEF-STL
10h 21m1 stop
$743Air Canada
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Fri, Jul 12 - Fri, Jul 19
10:55 am - 6:20 amSTL-KEF
14h 25m1 stop
9:30 am - 5:04 pmKEF-STL
12h 34m1 stop
$746Air France
Find Deal
Sun, Jul 21 - Thu, Aug 1
4:05 pm - 8:35 amSTL-KEF
11h 30m1 stop
10:00 am - 3:21 pmKEF-STL
34h 21m2 stops
$749Air Canada
Find Deal
Mon, Jul 22 - Thu, Aug 1
6:00 am - 10:00 amSTL-KEF
23h 00m2 stops
1:05 am - 8:55 pmKEF-STL
24h 50m2 stops
$1,328British Airways
Find Deal
Sun, Jun 30 - Wed, Jul 10

Flights from St. Louis to Reykjavik - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Reykjavik to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Reykjavik Keflavik Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Reykjavik Keflavik Intl Airport is January, where tickets cost $688 on average. On the other hand, the most expensive months are May and June, where the average cost of tickets is $1,250 and $1,198 respectively.

How far in advance should I book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Reykjavik Keflavik Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 77 days before departure.

Which airlines provide the cheapest flights from St. Louis to Reykjavik?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting St. Louis to Reykjavik were found on Delta ($645) and United Airlines ($646). American Airlines proposed the cheapest one-way flight at $1,634.

Good to know

Low season

February

High season

September

Cheapest flight

$324
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from St. Louis to Reykjavik

When to book flights from St. Louis to Reykjavik

Are your dates flexible? Find out the best times to travel from St. Louis to Reykjavik 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 St. Louis to Reykjavik flights

  • What is the cheapest flight from St. Louis to Reykjavik Keflavik Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Reykjavik Keflavik Intl Airport was $324 for a one-way ticket and $645 for a round-trip.

  • Do I need a passport to fly between St. Louis and Reykjavik?

    Yes, you’ll need a passport to travel to Reykjavik from St. Louis.

  • Which airports will I be using when flying from St. Louis to Reykjavik?

    On your way to Reykjavik, you’ll fly out from Lambert-St Louis. You’ll be landing at Reykjavik Keflavik Intl.

  • Which aircraft models fly most regularly from St. Louis to Reykjavik?

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

  • Which airline alliances offer flights from St. Louis to Reykjavik?

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

  • Which is the best airline for flights from St. Louis to Reykjavik, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Reykjavik are Delta and United Airlines. With an average price for the route of $1,040 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,202 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to Reykjavik.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from St. Louis to Reykjavik

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis to Reykjavik? 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.
8.0
DeltaOverall score based on 11094 reviews
8.0entertainment
7.5food
8.6crew
7.9comfort
8.2boarding
Airline reviews

Seat back monitors and outlets were dead and not working.

8.0 ExcellentCarl, Apr 2024JFK - FLL
Read more about Delta reviews

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

The crew, food, and entertainment were all good. But my screen had some sort of bug where if I turned it off, it would turn back on after 2-5 minutes. At full brightness. It made it very hard to get any shut-eye on the overnight flight. Also, the older Boeing plane, while nicely cared for (and no doors fell off 😅👏) doesn't have the nice air quality of newer planes. So I felt a bit greasy by the time we landed in Sweden.

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

Worst flight in my life. Only was scheduled for a 45 min flight to get our connection flight. It was late by 40 minutes and we missed our connection. Delta was totally useless trying to help and unable to get my family on the next flight because they overbooked it Thus had to get a hotel at my expense and lost a day at Disney as a result. Cost me about a $1000 if you add 2 hotels meals shuttles etc to get thru the day Awful customer service by Delta in Detroit totally useless people

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

the flight from Tampa departed with a delay. The food on board was poor, usually on international airlines alcoholic beverages are offered free of charge , but here it was for a fee, the cutlery was wooden, there were no hot drinks (tea, coffee). Unfortunately, I didn't take pictures of the portions of food, but it wouldn't have been enough for a child either.And in the future, I will try not to use the services of this airline

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

The late departure Of two hours waitresses, immature, and gossiping

Crowded plane but it flew on time and had friendly staff

We had a good flight, service was good and lots of leg room. Service was good and the staff were friendly.

The Air Canada agent was very helpful helping with my luggage and cat carrier when I went there instead of United.

Overall I will say it was a very good experience. It was as comfortable as can be expected for such a long flight - 12 hours from Toronto to Tokyo. Everyone was very pleasant and polite. Even the passengers were cooperative and trying to be nice to each other. Of course the space is limited on such a long flight. The bathrooms were actually very clean. The food was very good. I liked how there was a variety of food options. The in flight entertainment system was also very impressive! There were some children on the flight but they were well behaved and hardly ever crying. Great Job Canada Air! I will definitely fly with Air Canada again!

It was upsetting that the flights were canceled but that was due to weather. I did not receive any vouchers for food or a hotel stay when I was forced to spend the night in Montreal. I was also upset when my seat was changed many times.. The plane seemed old with a non-functioning screen and loose side pockets.. All in all in need of updating. On the positive side, the staff in areas was friendly and helpful.

Lost my bag. My first ever flight with them that they forced me to gate check my bag on, due to them having a 30 year old plane with small carry on bins, and they lost my bag. Never again.

United force you to download their App to do the check-in.

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Not sure if the crew were experiencing something unknown to me,but the service of passing water was non-existent.In addition,please take consideration when providing yogurt as alternative for breakfast as some of us, could be lactose intolerant.. thanks

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

Book cheap flights from St. Louis to Reykjavik

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Reykjavik found on KAYAK in the last 72 hours.
6/20Thu
2 stops
29h 32mSTL-KEF
$324
6/20Thu
1 stop
33h 28mSTL-KEF
$667
6/20Thu
3 stops
19h 55mSTL-KEF
$695
7/23Tue
2 stopsAmerican Airlines
37h 40mSTL-KEF
$1,634
7/23Tue
1 stopAir Canada
15h 35mSTL-KEF
$1,947
7/23Tue
3 stops
46h 06mSTL-KEF
$2,104

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St. Louis - Reykjavik Flights

Departure:

St. Louis (STL)United States

Destination:

Reykjavik (KEF)Iceland

Return flight deals:

Reykjavik - St. Louis

Cabin classes: